diff --git a/ChangeLog.d/add_psa_m_aead_ccm.txt b/ChangeLog.d/add_psa_m_aead_ccm.txt
new file mode 100644
index 0000000..d7588ee
--- /dev/null
+++ b/ChangeLog.d/add_psa_m_aead_ccm.txt
@@ -0,0 +1,3 @@
+Features
+   * Add the internal implementation of and support for CCM to the PSA multipart
+     AEAD interface.
diff --git a/ChangeLog.d/tls13-mvp.txt b/ChangeLog.d/tls13-mvp.txt
new file mode 100644
index 0000000..2dd48cc
--- /dev/null
+++ b/ChangeLog.d/tls13-mvp.txt
@@ -0,0 +1,7 @@
+Features
+   * Mbed TLS provides a minimum viable implementation of the TLS 1.3
+     protocol. See docs/architecture/tls13-support.md for the definition of
+     the TLS 1.3 Minimum Viable Product (MVP). The MBEDTLS_SSL_PROTO_TLS1_3
+     configuration option controls the enablement of the support. The APIs
+     mbedtls_ssl_conf_min_version() and mbedtls_ssl_conf_max_version() allow
+     to select the 1.3 version of the protocol to establish a TLS connection.
diff --git a/docs/architecture/tls13-experimental.md b/docs/architecture/tls13-support.md
similarity index 89%
rename from docs/architecture/tls13-experimental.md
rename to docs/architecture/tls13-support.md
index 0dceeeb..9e9aad3 100644
--- a/docs/architecture/tls13-experimental.md
+++ b/docs/architecture/tls13-support.md
@@ -1,71 +1,19 @@
-TLS 1.3 Experimental Developments
-=================================
+TLS 1.3 support
+===============
 
 Overview
 --------
 
-Mbed TLS doesn't support the TLS 1.3 protocol yet, but a prototype is in development.
-Stable parts of this prototype that can be independently tested are being successively
-upstreamed under the guard of the following macro:
+Mbed TLS provides a minimum viable implementation of the TLS 1.3 protocol
+defined in the "MVP definition" section below. The TLS 1.3 support enablement
+is controlled by the MBEDTLS_SSL_PROTO_TLS1_3 configuration option.
 
-```
-MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
-```
-
-This macro will likely be renamed to `MBEDTLS_SSL_PROTO_TLS1_3` once a minimal viable
-implementation of the TLS 1.3 protocol is available.
-
-See the [documentation of `MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL`](../../include/mbedtls/mbedtls_config.h)
-for more information.
-
-Status
-------
-
-The following lists which parts of the TLS 1.3 prototype have already been upstreamed
-together with their level of testing:
-
-* TLS 1.3 record protection mechanisms
-
-  The record protection routines `mbedtls_ssl_{encrypt|decrypt}_buf()` have been extended
-  to support the modified TLS 1.3 record protection mechanism, including modified computation
-  of AAD, IV, and the introduction of a flexible padding.
-
-  Those record protection routines have unit tests in `test_suite_ssl` alongside the
-  tests for the other record protection routines.
-
-  TODO: Add some test vectors from RFC 8448.
-
-- The HKDF key derivation function on which the TLS 1.3 key schedule is based,
-  is already present as an independent module controlled by `MBEDTLS_HKDF_C`
-  independently of the development of the TLS 1.3 prototype.
-
-- The TLS 1.3-specific HKDF-based key derivation functions (see RFC 8446):
-  * HKDF-Expand-Label
-  * Derive-Secret
-  - Secret evolution
-  * The traffic {Key,IV} generation from secret
-  Those functions are implemented in `library/ssl_tls13_keys.c` and
-  tested in `test_suite_ssl` using test vectors from RFC 8448 and
-  https://tls13.ulfheim.net/.
-
-- New TLS Message Processing Stack (MPS)
-
-  The TLS 1.3 prototype is developed alongside a rewrite of the TLS messaging layer,
-  encompassing low-level details such as record parsing, handshake reassembly, and
-  DTLS retransmission state machine.
-
-  MPS has the following components:
-  - Layer 1 (Datagram handling)
-  - Layer 2 (Record handling)
-  - Layer 3 (Message handling)
-  - Layer 4 (Retransmission State Machine)
-  - Reader  (Abstracted pointer arithmetic and reassembly logic for incoming data)
-  - Writer  (Abstracted pointer arithmetic and fragmentation logic for outgoing data)
-
-  Of those components, the following have been upstreamed
-  as part of `MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL`:
-
-  - Reader ([`library/mps_reader.h`](../../library/mps_reader.h))
+The development of the TLS 1.3 protocol is based on the TLS 1.3 prototype
+located at https://github.com/hannestschofenig/mbedtls. The prototype is
+itself based on a version of the development branch that we aim to keep as
+recent as possible (ideally the head) by merging regularly commits of the
+development branch into the prototype. The section "Prototype upstreaming
+status" below describes what remains to be upstreamed.
 
 
 MVP definition
@@ -231,6 +179,41 @@
     response to the MVP ClientHello, server sending a CertificateRequest
     message ...
 
+
+Prototype upstreaming status
+----------------------------
+
+The following summarizes which parts of the TLS 1.3 prototype remain to be
+upstreamed:
+
+- Ephemeral only handshake on client side: client authentication,
+  HelloRetryRequest support, version negotiation.
+
+- Ephemeral only handshake server side.
+
+- Pre-shared keys, session resumption and 0-RTT data (both client and server
+  side).
+
+- New TLS Message Processing Stack (MPS)
+
+  The TLS 1.3 prototype is developed alongside a rewrite of the TLS messaging layer,
+  encompassing low-level details such as record parsing, handshake reassembly, and
+  DTLS retransmission state machine.
+
+  MPS has the following components:
+  - Layer 1 (Datagram handling)
+  - Layer 2 (Record handling)
+  - Layer 3 (Message handling)
+  - Layer 4 (Retransmission State Machine)
+  - Reader  (Abstracted pointer arithmetic and reassembly logic for incoming data)
+  - Writer  (Abstracted pointer arithmetic and fragmentation logic for outgoing data)
+
+  Of those components, the following have been upstreamed
+  as part of `MBEDTLS_SSL_PROTO_TLS1_3`:
+
+  - Reader ([`library/mps_reader.h`](../../library/mps_reader.h))
+
+
 Coding rules checklist for TLS 1.3
 ----------------------------------
 
diff --git a/docs/use-psa-crypto.md b/docs/use-psa-crypto.md
index 6ec2dca..4a78e47 100644
--- a/docs/use-psa-crypto.md
+++ b/docs/use-psa-crypto.md
@@ -12,9 +12,8 @@
 `MBEDTLS_ECP_RESTARTABLE` and
 `MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER` to be disabled.
 
-Effect: `MBEDTLS_USE_PSA_CRYPTO` currently has no effect on TLS 1.3 (which is
-itself experimental and only partially supported so far): TLS 1.3 always uses
-the legacy APIs even when this option is set.
+Effect: `MBEDTLS_USE_PSA_CRYPTO` has no effect on TLS 1.3 for which PSA
+cryptography is mandatory.
 
 Stability: any API that's only available when `MBEDTLS_USE_PSA_CRYPTO` is
 defined is considered experimental and may change in incompatible ways at any
@@ -157,11 +156,6 @@
 
 This is only a high-level overview, grouped by theme
 
-TLS: 1.3 experimental support
------------------------------
-
-No part of the experimental support for TLS 1.3 is covered at the moment.
-
 TLS: key exchanges / asymmetric crypto
 --------------------------------------
 
diff --git a/include/mbedtls/check_config.h b/include/mbedtls/check_config.h
index 84afcf0..ce97f6a 100644
--- a/include/mbedtls/check_config.h
+++ b/include/mbedtls/check_config.h
@@ -598,9 +598,16 @@
 #error "MBEDTLS_SSL_PROTO_TLS1_2 defined, but not all prerequisites"
 #endif
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL) && ( !defined(MBEDTLS_HKDF_C) && \
-    !defined(MBEDTLS_SHA256_C) && !defined(MBEDTLS_SHA512_C) )
-#error "MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL defined, but not all prerequisites"
+/*
+ * HKDF is mandatory for TLS 1.3.
+ * Otherwise support for at least one ciphersuite mandates either SHA_256 or
+ * SHA_384.
+ */
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3) && \
+    ( ( !defined(MBEDTLS_HKDF_C) ) || \
+      ( !defined(MBEDTLS_SHA256_C) && !defined(MBEDTLS_SHA384_C) ) || \
+      ( !defined(MBEDTLS_PSA_CRYPTO_C) ) )
+#error "MBEDTLS_SSL_PROTO_TLS1_3 defined, but not all prerequisites"
 #endif
 
 #if defined(MBEDTLS_SSL_PROTO_TLS1_2) &&                                    \
diff --git a/include/mbedtls/cmac.h b/include/mbedtls/cmac.h
index 3e599b9..21ce882 100644
--- a/include/mbedtls/cmac.h
+++ b/include/mbedtls/cmac.h
@@ -67,9 +67,17 @@
 #endif /* !MBEDTLS_CMAC_ALT */
 
 /**
- * \brief               This function sets the CMAC key, and prepares to authenticate
+ * \brief               This function starts a new CMAC computation
+ *                      by setting the CMAC key, and preparing to authenticate
  *                      the input data.
- *                      Must be called with an initialized cipher context.
+ *                      It must be called with an initialized cipher context.
+ *
+ *                      Once this function has completed, data can be supplied
+ *                      to the CMAC computation by calling
+ *                      mbedtls_cipher_cmac_update().
+ *
+ *                      To start a CMAC computation using the same key as a previous
+ *                      CMAC computation, use mbedtls_cipher_cmac_finish().
  *
  * \note                When the CMAC implementation is supplied by an alternate
  *                      implementation (through #MBEDTLS_CMAC_ALT), some ciphers
@@ -95,9 +103,15 @@
  * \brief               This function feeds an input buffer into an ongoing CMAC
  *                      computation.
  *
- *                      It is called between mbedtls_cipher_cmac_starts() or
- *                      mbedtls_cipher_cmac_reset(), and mbedtls_cipher_cmac_finish().
- *                      Can be called repeatedly.
+ *                      The CMAC computation must have previously been started
+ *                      by calling mbedtls_cipher_cmac_starts() or
+ *                      mbedtls_cipher_cmac_reset().
+ *
+ *                      Call this function as many times as needed to input the
+ *                      data to be authenticated.
+ *                      Once all of the required data has been input,
+ *                      call mbedtls_cipher_cmac_finish() to obtain the result
+ *                      of the CMAC operation.
  *
  * \param ctx           The cipher context used for the CMAC operation.
  * \param input         The buffer holding the input data.
@@ -111,12 +125,13 @@
                                 const unsigned char *input, size_t ilen );
 
 /**
- * \brief               This function finishes the CMAC operation, and writes
- *                      the result to the output buffer.
+ * \brief               This function finishes an ongoing CMAC operation, and
+ *                      writes the result to the output buffer.
  *
- *                      It is called after mbedtls_cipher_cmac_update().
- *                      It can be followed by mbedtls_cipher_cmac_reset() and
- *                      mbedtls_cipher_cmac_update(), or mbedtls_cipher_free().
+ *                      It should be followed either by
+ *                      mbedtls_cipher_cmac_reset(), which starts another CMAC
+ *                      operation with the same key, or mbedtls_cipher_free(),
+ *                      which clears the cipher context.
  *
  * \param ctx           The cipher context used for the CMAC operation.
  * \param output        The output buffer for the CMAC checksum result.
@@ -129,12 +144,14 @@
                                 unsigned char *output );
 
 /**
- * \brief               This function prepares the authentication of another
- *                      message with the same key as the previous CMAC
- *                      operation.
+ * \brief               This function starts a new CMAC operation with the same
+ *                      key as the previous one.
  *
- *                      It is called after mbedtls_cipher_cmac_finish()
- *                      and before mbedtls_cipher_cmac_update().
+ *                      It should be called after finishing the previous CMAC
+ *                      operation with mbedtls_cipher_cmac_finish().
+ *                      After calling this function,
+ *                      call mbedtls_cipher_cmac_update() to supply the new
+ *                      CMAC operation with data.
  *
  * \param ctx           The cipher context used for the CMAC operation.
  *
diff --git a/include/mbedtls/mbedtls_config.h b/include/mbedtls/mbedtls_config.h
index c2f4587..0558ee0 100644
--- a/include/mbedtls/mbedtls_config.h
+++ b/include/mbedtls/mbedtls_config.h
@@ -1487,23 +1487,41 @@
 #define MBEDTLS_SSL_PROTO_TLS1_2
 
 /**
- * \def MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+ * \def MBEDTLS_SSL_PROTO_TLS1_3
  *
- * This macro is used to selectively enable experimental parts
- * of the code that contribute to the ongoing development of
- * the prototype TLS 1.3 and DTLS 1.3 implementation, and provide
- * no other purpose.
+ * Enable support for TLS 1.3.
  *
- * \warning TLS 1.3 and DTLS 1.3 aren't yet supported in Mbed TLS,
- *          and no feature exposed through this macro is part of the
- *          public API. In particular, features under the control
- *          of this macro are experimental and don't come with any
- *          stability guarantees.
+ * \note The support for TLS 1.3 is not comprehensive yet, in particular
+ *       pre-shared keys are not supported.
+ *       See docs/architecture/tls13-support.md for a description of the TLS
+ *       1.3 support that this option enables.
  *
- * Uncomment this macro to enable experimental and partial
- * functionality specific to TLS 1.3.
+ * Uncomment this macro to enable the support for TLS 1.3.
+ *
  */
-//#define MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+//#define MBEDTLS_SSL_PROTO_TLS1_3
+
+/**
+ * \def MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
+ *
+ * Enable TLS 1.3 middlebox compatibility mode.
+ *
+ * As specified in Section D.4 of RFC 8446, TLS 1.3 offers a compatibility
+ * mode to make a TLS 1.3 connection more likely to pass through middle boxes
+ * expecting TLS 1.2 traffic.
+ *
+ * Turning on the compatibility mode comes at the cost of a few added bytes
+ * on the wire, but it doesn't affect compatibility with TLS 1.3 implementations
+ * that don't use it. Therefore, unless transmission bandwidth is critical and
+ * you know that middlebox compatibility issues won't occur, it is therefore
+ * recommended to set this option.
+ *
+ * Comment to disable compatibility mode for TLS 1.3. If
+ * MBEDTLS_SSL_PROTO_TLS1_3 is not enabled, this option does not have any
+ * effect on the build.
+ *
+ */
+//#define MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 
 /**
  * \def MBEDTLS_SSL_PROTO_DTLS
diff --git a/include/mbedtls/ssl.h b/include/mbedtls/ssl.h
index d42e180..072ebbe 100644
--- a/include/mbedtls/ssl.h
+++ b/include/mbedtls/ssl.h
@@ -250,7 +250,7 @@
  */
 #define MBEDTLS_SSL_MAJOR_VERSION_3             3
 #define MBEDTLS_SSL_MINOR_VERSION_3             3   /*!< TLS v1.2 */
-#define MBEDTLS_SSL_MINOR_VERSION_4             4   /*!< TLS v1.3 (experimental) */
+#define MBEDTLS_SSL_MINOR_VERSION_4             4   /*!< TLS v1.3 */
 
 #define MBEDTLS_SSL_TRANSPORT_STREAM            0   /*!< TLS      */
 #define MBEDTLS_SSL_TRANSPORT_DATAGRAM          1   /*!< DTLS     */
@@ -638,10 +638,13 @@
     MBEDTLS_SSL_HANDSHAKE_OVER,
     MBEDTLS_SSL_SERVER_NEW_SESSION_TICKET,
     MBEDTLS_SSL_SERVER_HELLO_VERIFY_REQUEST_SENT,
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
     MBEDTLS_SSL_ENCRYPTED_EXTENSIONS,
     MBEDTLS_SSL_CLIENT_CERTIFICATE_VERIFY,
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#if defined(MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE)
+    MBEDTLS_SSL_CLIENT_CCS_AFTER_SERVER_FINISHED,
+#endif /* MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 }
 mbedtls_ssl_states;
 
@@ -1108,6 +1111,17 @@
  */
 struct mbedtls_ssl_session
 {
+#if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
+    unsigned char MBEDTLS_PRIVATE(mfl_code);     /*!< MaxFragmentLength negotiated by peer */
+#endif /* MBEDTLS_SSL_MAX_FRAGMENT_LENGTH */
+
+    unsigned char MBEDTLS_PRIVATE(exported);
+
+    /* This field is temporarily duplicated with mbedtls_ssl_context.minor_ver.
+     * Once runtime negotiation of TLS 1.2 and TLS 1.3 is implemented, it needs
+     * to be studied whether one of them can be removed. */
+    unsigned char MBEDTLS_PRIVATE(minor_ver);    /*!< The TLS version used in the session. */
+
 #if defined(MBEDTLS_HAVE_TIME)
     mbedtls_time_t MBEDTLS_PRIVATE(start);       /*!< starting time      */
 #endif
@@ -1117,13 +1131,6 @@
     unsigned char MBEDTLS_PRIVATE(id)[32];       /*!< session identifier */
     unsigned char MBEDTLS_PRIVATE(master)[48];   /*!< the master secret  */
 
-    unsigned char MBEDTLS_PRIVATE(exported);
-
-    /* This field is temporarily duplicated with mbedtls_ssl_context.minor_ver.
-     * Once runtime negotiation of TLS 1.2 and TLS 1.3 is implemented, it needs
-     * to be studied whether one of them can be removed. */
-    unsigned char MBEDTLS_PRIVATE(minor_ver);    /*!< The TLS version used in the session. */
-
 #if defined(MBEDTLS_X509_CRT_PARSE_C)
 #if defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE)
     mbedtls_x509_crt *MBEDTLS_PRIVATE(peer_cert);       /*!< peer X.509 cert chain */
@@ -1143,15 +1150,11 @@
     uint32_t MBEDTLS_PRIVATE(ticket_lifetime);   /*!< ticket lifetime hint    */
 #endif /* MBEDTLS_SSL_SESSION_TICKETS && MBEDTLS_SSL_CLI_C */
 
-#if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
-    unsigned char MBEDTLS_PRIVATE(mfl_code);     /*!< MaxFragmentLength negotiated by peer */
-#endif /* MBEDTLS_SSL_MAX_FRAGMENT_LENGTH */
-
 #if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
     int MBEDTLS_PRIVATE(encrypt_then_mac);       /*!< flag for EtM activation                */
 #endif
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
     mbedtls_ssl_tls13_application_secrets MBEDTLS_PRIVATE(app_secrets);
 #endif
 };
@@ -1172,14 +1175,14 @@
 typedef enum
 {
     MBEDTLS_SSL_KEY_EXPORT_TLS12_MASTER_SECRET = 0,
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
     MBEDTLS_SSL_KEY_EXPORT_TLS1_3_CLIENT_EARLY_SECRET,
     MBEDTLS_SSL_KEY_EXPORT_TLS1_3_EARLY_EXPORTER_SECRET,
     MBEDTLS_SSL_KEY_EXPORT_TLS1_3_CLIENT_HANDSHAKE_TRAFFIC_SECRET,
     MBEDTLS_SSL_KEY_EXPORT_TLS1_3_SERVER_HANDSHAKE_TRAFFIC_SECRET,
     MBEDTLS_SSL_KEY_EXPORT_TLS1_3_CLIENT_APPLICATION_TRAFFIC_SECRET,
     MBEDTLS_SSL_KEY_EXPORT_TLS1_3_SERVER_APPLICATION_TRAFFIC_SECRET,
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 } mbedtls_ssl_key_export_type;
 
 /**
@@ -1210,7 +1213,62 @@
  */
 struct mbedtls_ssl_config
 {
-    /* Group items by size (largest first) to minimize padding overhead */
+    /* Group items mostly by size. This helps to reduce memory wasted to
+     * padding. It also helps to keep smaller fields early in the structure,
+     * so that elements tend to be in the 128-element direct access window
+     * on Arm Thumb, which reduces the code size. */
+
+    unsigned char MBEDTLS_PRIVATE(max_major_ver);    /*!< max. major version used            */
+    unsigned char MBEDTLS_PRIVATE(max_minor_ver);    /*!< max. minor version used            */
+    unsigned char MBEDTLS_PRIVATE(min_major_ver);    /*!< min. major version used            */
+    unsigned char MBEDTLS_PRIVATE(min_minor_ver);    /*!< min. minor version used            */
+
+    /*
+     * Flags (could be bit-fields to save RAM, but separate bytes make
+     * the code smaller on architectures with an instruction for direct
+     * byte access).
+     */
+
+    uint8_t MBEDTLS_PRIVATE(endpoint);      /*!< 0: client, 1: server               */
+    uint8_t MBEDTLS_PRIVATE(transport);     /*!< 0: stream (TLS), 1: datagram (DTLS)    */
+    uint8_t MBEDTLS_PRIVATE(authmode);      /*!< MBEDTLS_SSL_VERIFY_XXX             */
+    /* needed even with renego disabled for LEGACY_BREAK_HANDSHAKE          */
+    uint8_t MBEDTLS_PRIVATE(allow_legacy_renegotiation); /*!< MBEDTLS_LEGACY_XXX   */
+#if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
+    uint8_t MBEDTLS_PRIVATE(mfl_code);      /*!< desired fragment length indicator
+                                                 (MBEDTLS_SSL_MAX_FRAG_LEN_XXX) */
+#endif
+#if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
+    uint8_t MBEDTLS_PRIVATE(encrypt_then_mac); /*!< negotiate encrypt-then-mac?    */
+#endif
+#if defined(MBEDTLS_SSL_EXTENDED_MASTER_SECRET)
+    uint8_t MBEDTLS_PRIVATE(extended_ms);   /*!< negotiate extended master secret?  */
+#endif
+#if defined(MBEDTLS_SSL_DTLS_ANTI_REPLAY)
+    uint8_t MBEDTLS_PRIVATE(anti_replay);   /*!< detect and prevent replay?         */
+#endif
+#if defined(MBEDTLS_SSL_RENEGOTIATION)
+    uint8_t MBEDTLS_PRIVATE(disable_renegotiation); /*!< disable renegotiation?     */
+#endif
+#if defined(MBEDTLS_SSL_SESSION_TICKETS)
+    uint8_t MBEDTLS_PRIVATE(session_tickets);   /*!< use session tickets?           */
+#endif
+#if defined(MBEDTLS_SSL_SRV_C)
+    uint8_t MBEDTLS_PRIVATE(cert_req_ca_list);  /*!< enable sending CA list in
+                                                     Certificate Request messages? */
+    uint8_t MBEDTLS_PRIVATE(respect_cli_pref);  /*!< pick the ciphersuite according to
+                                                     the client's preferences rather
+                                                     than ours? */
+#endif
+#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
+    uint8_t MBEDTLS_PRIVATE(ignore_unexpected_cid); /*!< Should DTLS record with
+                                                     *   unexpected CID
+                                                     *   lead to failure? */
+#endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
+#if defined(MBEDTLS_SSL_DTLS_SRTP)
+    uint8_t MBEDTLS_PRIVATE(dtls_srtp_mki_support); /* support having mki_value
+                                                       in the use_srtp extension? */
+#endif
 
     /*
      * Pointers
@@ -1219,10 +1277,10 @@
     /** Allowed ciphersuites for (D)TLS 1.2 (0-terminated)                  */
     const int *MBEDTLS_PRIVATE(ciphersuite_list);
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
     /** Allowed TLS 1.3 key exchange modes.                                 */
     int MBEDTLS_PRIVATE(tls13_kex_modes);
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 
     /** Callback for printing debug output                                  */
     void (*MBEDTLS_PRIVATE(f_dbg))(void *, int, const char *, int, const char *);
@@ -1303,9 +1361,9 @@
 #if defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
     const int *MBEDTLS_PRIVATE(sig_hashes);          /*!< allowed signature hashes           */
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
     const uint16_t *MBEDTLS_PRIVATE(tls13_sig_algs); /*!< allowed signature algorithms for TLS 1.3 */
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 #endif
 
 #if defined(MBEDTLS_ECP_C) && !defined(MBEDTLS_DEPRECATED_REMOVED)
@@ -1365,7 +1423,7 @@
 #endif /* MBEDTLS_SSL_DTLS_SRTP */
 
     /*
-     * Numerical settings (int then char)
+     * Numerical settings (int)
      */
 
     uint32_t MBEDTLS_PRIVATE(read_timeout);          /*!< timeout for mbedtls_ssl_read (ms)  */
@@ -1388,55 +1446,6 @@
 #if defined(MBEDTLS_DHM_C) && defined(MBEDTLS_SSL_CLI_C)
     unsigned int MBEDTLS_PRIVATE(dhm_min_bitlen);    /*!< min. bit length of the DHM prime   */
 #endif
-
-    unsigned char MBEDTLS_PRIVATE(max_major_ver);    /*!< max. major version used            */
-    unsigned char MBEDTLS_PRIVATE(max_minor_ver);    /*!< max. minor version used            */
-    unsigned char MBEDTLS_PRIVATE(min_major_ver);    /*!< min. major version used            */
-    unsigned char MBEDTLS_PRIVATE(min_minor_ver);    /*!< min. minor version used            */
-
-    /*
-     * Flags (bitfields)
-     */
-
-    unsigned int MBEDTLS_PRIVATE(endpoint) : 1;      /*!< 0: client, 1: server               */
-    unsigned int MBEDTLS_PRIVATE(transport) : 1;     /*!< stream (TLS) or datagram (DTLS)    */
-    unsigned int MBEDTLS_PRIVATE(authmode) : 2;      /*!< MBEDTLS_SSL_VERIFY_XXX             */
-    /* needed even with renego disabled for LEGACY_BREAK_HANDSHAKE          */
-    unsigned int MBEDTLS_PRIVATE(allow_legacy_renegotiation) : 2 ; /*!< MBEDTLS_LEGACY_XXX   */
-#if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
-    unsigned int MBEDTLS_PRIVATE(mfl_code) : 3;      /*!< desired fragment length            */
-#endif
-#if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
-    unsigned int MBEDTLS_PRIVATE(encrypt_then_mac) : 1 ; /*!< negotiate encrypt-then-mac?    */
-#endif
-#if defined(MBEDTLS_SSL_EXTENDED_MASTER_SECRET)
-    unsigned int MBEDTLS_PRIVATE(extended_ms) : 1;   /*!< negotiate extended master secret?  */
-#endif
-#if defined(MBEDTLS_SSL_DTLS_ANTI_REPLAY)
-    unsigned int MBEDTLS_PRIVATE(anti_replay) : 1;   /*!< detect and prevent replay?         */
-#endif
-#if defined(MBEDTLS_SSL_RENEGOTIATION)
-    unsigned int MBEDTLS_PRIVATE(disable_renegotiation) : 1; /*!< disable renegotiation?     */
-#endif
-#if defined(MBEDTLS_SSL_SESSION_TICKETS)
-    unsigned int MBEDTLS_PRIVATE(session_tickets) : 1;   /*!< use session tickets?           */
-#endif
-#if defined(MBEDTLS_SSL_SRV_C)
-    unsigned int MBEDTLS_PRIVATE(cert_req_ca_list) : 1;  /*!< enable sending CA list in
-                                          Certificate Request messages?     */
-    unsigned int MBEDTLS_PRIVATE(respect_cli_pref) : 1;  /*!< pick the ciphersuite according to
-                                          the client's preferences rather
-                                          than ours                         */
-#endif
-#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
-    unsigned int MBEDTLS_PRIVATE(ignore_unexpected_cid) : 1; /*!< Determines whether DTLS
-                                             *   record with unexpected CID
-                                             *   should lead to failure.    */
-#endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
-#if defined(MBEDTLS_SSL_DTLS_SRTP)
-    unsigned int MBEDTLS_PRIVATE(dtls_srtp_mki_support) : 1; /* support having mki_value
-                                               in the use_srtp extension     */
-#endif
 };
 
 struct mbedtls_ssl_context
@@ -1502,11 +1511,11 @@
                                                                   *    This pointer owns the transform
                                                                   *    it references.                  */
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
     /*! The application data transform in TLS 1.3.
      *  This pointer owns the transform it references. */
     mbedtls_ssl_transform *MBEDTLS_PRIVATE(transform_application);
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 
     /*
      * Timers
@@ -2744,7 +2753,7 @@
 void mbedtls_ssl_conf_ciphersuites( mbedtls_ssl_config *conf,
                                     const int *ciphersuites );
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
 /**
  * \brief Set the supported key exchange modes for TLS 1.3 connections.
  *
@@ -2789,7 +2798,7 @@
 
 void mbedtls_ssl_conf_tls13_key_exchange_modes( mbedtls_ssl_config* conf,
                                                 const int kex_modes );
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 
 #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
 #define MBEDTLS_SSL_UNEXPECTED_CID_IGNORE 0
@@ -3290,7 +3299,7 @@
 void mbedtls_ssl_conf_sig_hashes( mbedtls_ssl_config *conf,
                                   const int *hashes );
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
 /**
  * \brief          Configure allowed signature algorithms for use in TLS 1.3
  *
@@ -3302,7 +3311,7 @@
  */
 void mbedtls_ssl_conf_sig_algs( mbedtls_ssl_config *conf,
                                 const uint16_t* sig_algs );
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 #endif /* MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED */
 
 #if defined(MBEDTLS_X509_CRT_PARSE_C)
diff --git a/include/psa/crypto_driver_common.h b/include/psa/crypto_driver_common.h
index 1b6f322..26363c6 100644
--- a/include/psa/crypto_driver_common.h
+++ b/include/psa/crypto_driver_common.h
@@ -42,6 +42,9 @@
  * of these types. */
 #include "crypto_types.h"
 #include "crypto_values.h"
+/* Include size definitions which are used to size some arrays in operation
+ * structures. */
+#include <psa/crypto_sizes.h>
 
 /** For encrypt-decrypt functions, whether the operation is an encryption
  * or a decryption. */
diff --git a/include/psa/crypto_extra.h b/include/psa/crypto_extra.h
index 2c0b106..1f68925 100644
--- a/include/psa/crypto_extra.h
+++ b/include/psa/crypto_extra.h
@@ -31,6 +31,7 @@
 
 #include "mbedtls/platform_util.h"
 
+#include "crypto_types.h"
 #include "crypto_compat.h"
 
 #ifdef __cplusplus
diff --git a/include/psa/crypto_struct.h b/include/psa/crypto_struct.h
index 2689415..2c61e53 100644
--- a/include/psa/crypto_struct.h
+++ b/include/psa/crypto_struct.h
@@ -186,9 +186,6 @@
 {
     uint8_t *MBEDTLS_PRIVATE(info);
     size_t MBEDTLS_PRIVATE(info_length);
-    psa_mac_operation_t MBEDTLS_PRIVATE(hmac);
-    uint8_t MBEDTLS_PRIVATE(prk)[PSA_HASH_MAX_SIZE];
-    uint8_t MBEDTLS_PRIVATE(output_block)[PSA_HASH_MAX_SIZE];
 #if PSA_HASH_MAX_SIZE > 0xff
 #error "PSA_HASH_MAX_SIZE does not fit in uint8_t"
 #endif
@@ -196,6 +193,9 @@
     uint8_t MBEDTLS_PRIVATE(block_number);
     unsigned int MBEDTLS_PRIVATE(state) : 2;
     unsigned int MBEDTLS_PRIVATE(info_set) : 1;
+    uint8_t MBEDTLS_PRIVATE(output_block)[PSA_HASH_MAX_SIZE];
+    uint8_t MBEDTLS_PRIVATE(prk)[PSA_HASH_MAX_SIZE];
+    struct psa_mac_operation_s MBEDTLS_PRIVATE(hmac);
 } psa_hkdf_key_derivation_t;
 #endif /* MBEDTLS_PSA_BUILTIN_ALG_HKDF */
 
diff --git a/library/.gitignore b/library/.gitignore
index 6fde1f5..f6619d2 100644
--- a/library/.gitignore
+++ b/library/.gitignore
@@ -6,3 +6,5 @@
 # Automatically generated files
 /error.c
 /version_features.c
+/ssl_debug_helpers_generated.c
+/ssl_debug_helpers_generated.h
diff --git a/library/CMakeLists.txt b/library/CMakeLists.txt
index caac2d5..add0784 100644
--- a/library/CMakeLists.txt
+++ b/library/CMakeLists.txt
@@ -77,6 +77,7 @@
     sha1.c
     sha256.c
     sha512.c
+    ssl_debug_helpers_generated.c
     threading.c
     timing.c
     version.c
@@ -143,9 +144,23 @@
             ${CMAKE_CURRENT_SOURCE_DIR}/../include/mbedtls/mbedtls_config.h
             ${CMAKE_CURRENT_SOURCE_DIR}/../scripts/data_files/version_features.fmt
     )
+
+    add_custom_command(
+        OUTPUT
+            ${CMAKE_CURRENT_BINARY_DIR}/ssl_debug_helpers_generated.c
+        COMMAND
+            ${MBEDTLS_PYTHON_EXECUTABLE}
+                ${CMAKE_CURRENT_SOURCE_DIR}/../scripts/generate_ssl_debug_helpers.py
+                --mbedtls-root ${CMAKE_CURRENT_SOURCE_DIR}/..
+                ${CMAKE_CURRENT_BINARY_DIR}
+        DEPENDS
+            ${CMAKE_CURRENT_SOURCE_DIR}/../scripts/generate_ssl_debug_helpers.py
+            ${error_headers}
+    )
 else()
     link_to_source(error.c)
     link_to_source(version_features.c)
+    link_to_source(ssl_debug_helpers_generated.c)
 endif()
 
 if(CMAKE_COMPILER_IS_GNUCC)
diff --git a/library/Makefile b/library/Makefile
index bd116be..9881eb7 100644
--- a/library/Makefile
+++ b/library/Makefile
@@ -24,6 +24,12 @@
 
 PERL ?= perl
 
+ifdef WINDOWS
+PYTHON ?= python
+else
+PYTHON ?= $(shell if type python3 >/dev/null 2>/dev/null; then echo python3; else echo python; fi)
+endif
+
 # if were running on Windows build for Windows
 ifdef WINDOWS
 WINDOWS_BUILD=1
@@ -136,6 +142,7 @@
 	     sha1.o \
 	     sha256.o \
 	     sha512.o \
+	     ssl_debug_helpers_generated.o \
 	     threading.o \
 	     timing.o \
 	     version.o \
@@ -281,7 +288,7 @@
 	$(CC) $(LOCAL_CFLAGS) $(CFLAGS) -o $@ -c $<
 
 .PHONY: generated_files
-GENERATED_FILES = error.c version_features.c
+GENERATED_FILES = error.c version_features.c ssl_debug_helpers_generated.c
 generated_files: $(GENERATED_FILES)
 
 error.c: ../scripts/generate_errors.pl
@@ -291,6 +298,12 @@
 	echo "  Gen   $@"
 	$(PERL) ../scripts/generate_errors.pl
 
+ssl_debug_helpers_generated.c: ../scripts/generate_ssl_debug_helpers.py
+ssl_debug_helpers_generated.c: $(filter-out %config%,$(wildcard ../include/mbedtls/*.h))
+ssl_debug_helpers_generated.c:
+	echo "  Gen   $@"
+	$(PYTHON) ../scripts/generate_ssl_debug_helpers.py --mbedtls-root .. .
+
 version_features.c: ../scripts/generate_features.pl
 version_features.c: ../scripts/data_files/version_features.fmt
 ## The generated file only depends on the options that are present in mbedtls_config.h,
diff --git a/library/base64.c b/library/base64.c
index a516c1d..83daa0b 100644
--- a/library/base64.c
+++ b/library/base64.c
@@ -22,7 +22,7 @@
 #if defined(MBEDTLS_BASE64_C)
 
 #include "mbedtls/base64.h"
-#include "base64_invasive.h"
+#include "constant_time_internal.h"
 
 #include <stdint.h>
 
@@ -38,41 +38,6 @@
 
 #define BASE64_SIZE_T_MAX   ( (size_t) -1 ) /* SIZE_T_MAX is not standard */
 
-/* Return 0xff if low <= c <= high, 0 otherwise.
- *
- * Constant flow with respect to c.
- */
-MBEDTLS_STATIC_TESTABLE
-unsigned char mbedtls_base64_mask_of_range( unsigned char low,
-                                            unsigned char high,
-                                            unsigned char c )
-{
-    /* low_mask is: 0 if low <= c, 0x...ff if low > c */
-    unsigned low_mask = ( (unsigned) c - low ) >> 8;
-    /* high_mask is: 0 if c <= high, 0x...ff if c > high */
-    unsigned high_mask = ( (unsigned) high - c ) >> 8;
-    return( ~( low_mask | high_mask ) & 0xff );
-}
-
-/* Given a value in the range 0..63, return the corresponding Base64 digit.
- * The implementation assumes that letters are consecutive (e.g. ASCII
- * but not EBCDIC).
- */
-MBEDTLS_STATIC_TESTABLE
-unsigned char mbedtls_base64_enc_char( unsigned char val )
-{
-    unsigned char digit = 0;
-    /* For each range of values, if val is in that range, mask digit with
-     * the corresponding value. Since val can only be in a single range,
-     * only at most one masking will change digit. */
-    digit |= mbedtls_base64_mask_of_range(  0, 25, val ) & ( 'A' + val );
-    digit |= mbedtls_base64_mask_of_range( 26, 51, val ) & ( 'a' + val - 26 );
-    digit |= mbedtls_base64_mask_of_range( 52, 61, val ) & ( '0' + val - 52 );
-    digit |= mbedtls_base64_mask_of_range( 62, 62, val ) & '+';
-    digit |= mbedtls_base64_mask_of_range( 63, 63, val ) & '/';
-    return( digit );
-}
-
 /*
  * Encode a buffer into base64 format
  */
@@ -113,12 +78,12 @@
         C2 = *src++;
         C3 = *src++;
 
-        *p++ = mbedtls_base64_enc_char( ( C1 >> 2 ) & 0x3F );
-        *p++ = mbedtls_base64_enc_char( ( ( ( C1 &  3 ) << 4 ) + ( C2 >> 4 ) )
+        *p++ = mbedtls_ct_base64_enc_char( ( C1 >> 2 ) & 0x3F );
+        *p++ = mbedtls_ct_base64_enc_char( ( ( ( C1 &  3 ) << 4 ) + ( C2 >> 4 ) )
                                         & 0x3F );
-        *p++ = mbedtls_base64_enc_char( ( ( ( C2 & 15 ) << 2 ) + ( C3 >> 6 ) )
+        *p++ = mbedtls_ct_base64_enc_char( ( ( ( C2 & 15 ) << 2 ) + ( C3 >> 6 ) )
                                         & 0x3F );
-        *p++ = mbedtls_base64_enc_char( C3 & 0x3F );
+        *p++ = mbedtls_ct_base64_enc_char( C3 & 0x3F );
     }
 
     if( i < slen )
@@ -126,12 +91,12 @@
         C1 = *src++;
         C2 = ( ( i + 1 ) < slen ) ? *src++ : 0;
 
-        *p++ = mbedtls_base64_enc_char( ( C1 >> 2 ) & 0x3F );
-        *p++ = mbedtls_base64_enc_char( ( ( ( C1 & 3 ) << 4 ) + ( C2 >> 4 ) )
+        *p++ = mbedtls_ct_base64_enc_char( ( C1 >> 2 ) & 0x3F );
+        *p++ = mbedtls_ct_base64_enc_char( ( ( ( C1 & 3 ) << 4 ) + ( C2 >> 4 ) )
                                         & 0x3F );
 
         if( ( i + 1 ) < slen )
-             *p++ = mbedtls_base64_enc_char( ( ( C2 & 15 ) << 2 ) & 0x3F );
+             *p++ = mbedtls_ct_base64_enc_char( ( ( C2 & 15 ) << 2 ) & 0x3F );
         else *p++ = '=';
 
         *p++ = '=';
@@ -143,35 +108,6 @@
     return( 0 );
 }
 
-/* Given a Base64 digit, return its value.
- * If c is not a Base64 digit ('A'..'Z', 'a'..'z', '0'..'9', '+' or '/'),
- * return -1.
- *
- * The implementation assumes that letters are consecutive (e.g. ASCII
- * but not EBCDIC).
- *
- * The implementation is constant-flow (no branch or memory access depending
- * on the value of c) unless the compiler inlines and optimizes a specific
- * access.
- */
-MBEDTLS_STATIC_TESTABLE
-signed char mbedtls_base64_dec_value( unsigned char c )
-{
-    unsigned char val = 0;
-    /* For each range of digits, if c is in that range, mask val with
-     * the corresponding value. Since c can only be in a single range,
-     * only at most one masking will change val. Set val to one plus
-     * the desired value so that it stays 0 if c is in none of the ranges. */
-    val |= mbedtls_base64_mask_of_range( 'A', 'Z', c ) & ( c - 'A' +  0 + 1 );
-    val |= mbedtls_base64_mask_of_range( 'a', 'z', c ) & ( c - 'a' + 26 + 1 );
-    val |= mbedtls_base64_mask_of_range( '0', '9', c ) & ( c - '0' + 52 + 1 );
-    val |= mbedtls_base64_mask_of_range( '+', '+', c ) & ( c - '+' + 62 + 1 );
-    val |= mbedtls_base64_mask_of_range( '/', '/', c ) & ( c - '/' + 63 + 1 );
-    /* At this point, val is 0 if c is an invalid digit and v+1 if c is
-     * a digit with the value v. */
-    return( val - 1 );
-}
-
 /*
  * Decode a base64-formatted buffer
  */
@@ -224,7 +160,7 @@
         {
             if( equals != 0 )
                 return( MBEDTLS_ERR_BASE64_INVALID_CHARACTER );
-            if( mbedtls_base64_dec_value( src[i] ) < 0 )
+            if( mbedtls_ct_base64_dec_value( src[i] ) < 0 )
                 return( MBEDTLS_ERR_BASE64_INVALID_CHARACTER );
         }
         n++;
@@ -259,7 +195,7 @@
         if( *src == '=' )
             ++equals;
         else
-            x |= mbedtls_base64_dec_value( *src );
+            x |= mbedtls_ct_base64_dec_value( *src );
 
         if( ++accumulated_digits == 4 )
         {
diff --git a/library/base64_invasive.h b/library/base64_invasive.h
deleted file mode 100644
index ed5f7cb..0000000
--- a/library/base64_invasive.h
+++ /dev/null
@@ -1,55 +0,0 @@
-/**
- * \file base_invasive.h
- *
- * \brief Base64 module: interfaces for invasive testing only.
- *
- * The interfaces in this file are intended for testing purposes only.
- * They SHOULD NOT be made available in library integrations except when
- * building the library for testing.
- */
-/*
- *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-#ifndef MBEDTLS_BASE64_INVASIVE_H
-#define MBEDTLS_BASE64_INVASIVE_H
-
-#include "common.h"
-
-#if defined(MBEDTLS_TEST_HOOKS)
-/* Return 0xff if low <= c <= high, 0 otherwise.
- *
- * Constant flow with respect to c.
- */
-unsigned char mbedtls_base64_mask_of_range( unsigned char low,
-                                            unsigned char high,
-                                            unsigned char c );
-
-/* Given a value in the range 0..63, return the corresponding Base64 digit.
- *
- * Operates in constant time (no branches or memory access depending on val).
- */
-unsigned char mbedtls_base64_enc_char( unsigned char val );
-
-/* Given a Base64 digit, return its value.
- * If c is not a Base64 digit ('A'..'Z', 'a'..'z', '0'..'9', '+' or '/'),
- * return -1.
- *
- * Operates in constant time (no branches or memory access depending on c).
- */
-signed char mbedtls_base64_dec_value( unsigned char c );
-#endif /* MBEDTLS_TEST_HOOKS */
-
-#endif /* MBEDTLS_BASE64_INVASIVE_H */
diff --git a/library/constant_time.c b/library/constant_time.c
index 9bb275c..d8870ae 100644
--- a/library/constant_time.c
+++ b/library/constant_time.c
@@ -40,6 +40,10 @@
 #include "mbedtls/rsa.h"
 #endif
 
+#if defined(MBEDTLS_BASE64_C)
+#include "constant_time_invasive.h"
+#endif
+
 #include <string.h>
 
 int mbedtls_ct_memcmp( const void *a,
@@ -150,6 +154,26 @@
 
 #endif /* MBEDTLS_SSL_SOME_SUITES_USE_TLS_CBC */
 
+#if defined(MBEDTLS_BASE64_C)
+
+/* Return 0xff if low <= c <= high, 0 otherwise.
+ *
+ * Constant flow with respect to c.
+ */
+MBEDTLS_STATIC_TESTABLE
+unsigned char mbedtls_ct_uchar_mask_of_range( unsigned char low,
+                                              unsigned char high,
+                                              unsigned char c )
+{
+    /* low_mask is: 0 if low <= c, 0x...ff if low > c */
+    unsigned low_mask = ( (unsigned) c - low ) >> 8;
+    /* high_mask is: 0 if c <= high, 0x...ff if c > high */
+    unsigned high_mask = ( (unsigned) high - c ) >> 8;
+    return( ~( low_mask | high_mask ) & 0xff );
+}
+
+#endif /* MBEDTLS_BASE64_C */
+
 unsigned mbedtls_ct_size_bool_eq( size_t x,
                                   size_t y )
 {
@@ -301,6 +325,41 @@
 
 #endif /* MBEDTLS_BIGNUM_C */
 
+#if defined(MBEDTLS_BASE64_C)
+
+unsigned char mbedtls_ct_base64_enc_char( unsigned char value )
+{
+    unsigned char digit = 0;
+    /* For each range of values, if value is in that range, mask digit with
+     * the corresponding value. Since value can only be in a single range,
+     * only at most one masking will change digit. */
+    digit |= mbedtls_ct_uchar_mask_of_range(  0, 25, value ) & ( 'A' + value );
+    digit |= mbedtls_ct_uchar_mask_of_range( 26, 51, value ) & ( 'a' + value - 26 );
+    digit |= mbedtls_ct_uchar_mask_of_range( 52, 61, value ) & ( '0' + value - 52 );
+    digit |= mbedtls_ct_uchar_mask_of_range( 62, 62, value ) & '+';
+    digit |= mbedtls_ct_uchar_mask_of_range( 63, 63, value ) & '/';
+    return( digit );
+}
+
+signed char mbedtls_ct_base64_dec_value( unsigned char c )
+{
+    unsigned char val = 0;
+    /* For each range of digits, if c is in that range, mask val with
+     * the corresponding value. Since c can only be in a single range,
+     * only at most one masking will change val. Set val to one plus
+     * the desired value so that it stays 0 if c is in none of the ranges. */
+    val |= mbedtls_ct_uchar_mask_of_range( 'A', 'Z', c ) & ( c - 'A' +  0 + 1 );
+    val |= mbedtls_ct_uchar_mask_of_range( 'a', 'z', c ) & ( c - 'a' + 26 + 1 );
+    val |= mbedtls_ct_uchar_mask_of_range( '0', '9', c ) & ( c - '0' + 52 + 1 );
+    val |= mbedtls_ct_uchar_mask_of_range( '+', '+', c ) & ( c - '+' + 62 + 1 );
+    val |= mbedtls_ct_uchar_mask_of_range( '/', '/', c ) & ( c - '/' + 63 + 1 );
+    /* At this point, val is 0 if c is an invalid digit and v+1 if c is
+     * a digit with the value v. */
+    return( val - 1 );
+}
+
+#endif /* MBEDTLS_BASE64_C */
+
 #if defined(MBEDTLS_PKCS1_V15) && defined(MBEDTLS_RSA_C) && !defined(MBEDTLS_RSA_ALT)
 
 /** Shift some data towards the left inside a buffer.
diff --git a/library/constant_time_internal.h b/library/constant_time_internal.h
index ac18b56..053cf12 100644
--- a/library/constant_time_internal.h
+++ b/library/constant_time_internal.h
@@ -167,6 +167,35 @@
 
 #endif /* MBEDTLS_BIGNUM_C */
 
+#if defined(MBEDTLS_BASE64_C)
+
+/** Given a value in the range 0..63, return the corresponding Base64 digit.
+ *
+ * The implementation assumes that letters are consecutive (e.g. ASCII
+ * but not EBCDIC).
+ *
+ * \param value     A value in the range 0..63.
+ *
+ * \return          A base64 digit converted from \p value.
+ */
+unsigned char mbedtls_ct_base64_enc_char( unsigned char value );
+
+/** Given a Base64 digit, return its value.
+ *
+ * If c is not a Base64 digit ('A'..'Z', 'a'..'z', '0'..'9', '+' or '/'),
+ * return -1.
+ *
+ * The implementation assumes that letters are consecutive (e.g. ASCII
+ * but not EBCDIC).
+ *
+ * \param c     A base64 digit.
+ *
+ * \return      The value of the base64 digit \p c.
+ */
+signed char mbedtls_ct_base64_dec_value( unsigned char c );
+
+#endif /* MBEDTLS_BASE64_C */
+
 #if defined(MBEDTLS_SSL_SOME_SUITES_USE_TLS_CBC)
 
 /** Conditional memcpy without branches.
diff --git a/library/constant_time_invasive.h b/library/constant_time_invasive.h
new file mode 100644
index 0000000..4620ca1
--- /dev/null
+++ b/library/constant_time_invasive.h
@@ -0,0 +1,51 @@
+/**
+ * \file constant_time_invasive.h
+ *
+ * \brief Constant-time module: interfaces for invasive testing only.
+ *
+ * The interfaces in this file are intended for testing purposes only.
+ * They SHOULD NOT be made available in library integrations except when
+ * building the library for testing.
+ */
+/*
+ *  Copyright The Mbed TLS Contributors
+ *  SPDX-License-Identifier: Apache-2.0
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *  not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+#ifndef MBEDTLS_CONSTANT_TIME_INVASIVE_H
+#define MBEDTLS_CONSTANT_TIME_INVASIVE_H
+
+#include "common.h"
+
+#if defined(MBEDTLS_TEST_HOOKS)
+
+/** Turn a value into a mask:
+ * - if \p low <= \p c <= \p high,
+ *   return the all-bits 1 mask, aka (unsigned) -1
+ * - otherwise, return the all-bits 0 mask, aka 0
+ *
+ * \param low   The value to analyze.
+ * \param high  The value to analyze.
+ * \param c     The value to analyze.
+ *
+ * \return      All-bits-one if \p low <= \p c <= \p high, otherwise zero.
+ */
+unsigned char mbedtls_ct_uchar_mask_of_range( unsigned char low,
+                                              unsigned char high,
+                                              unsigned char c );
+
+#endif /* MBEDTLS_TEST_HOOKS */
+
+#endif /* MBEDTLS_CONSTANT_TIME_INVASIVE_H */
diff --git a/library/ecdh.c b/library/ecdh.c
index 3f39926..d1680b5 100644
--- a/library/ecdh.c
+++ b/library/ecdh.c
@@ -728,7 +728,7 @@
 #endif
 }
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
 
 static int ecdh_tls13_make_params_internal( mbedtls_ecdh_context_mbed *ctx,
                                             size_t *out_len, int point_format,
@@ -861,6 +861,6 @@
 #endif
 }
 
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 
 #endif /* MBEDTLS_ECDH_C */
diff --git a/library/ecdh_misc.h b/library/ecdh_misc.h
index d0f338a..37cb6d8 100644
--- a/library/ecdh_misc.h
+++ b/library/ecdh_misc.h
@@ -27,7 +27,7 @@
 
 #if defined(MBEDTLS_ECDH_C)
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
 
 /*
  * Setup context without Everest
@@ -50,7 +50,7 @@
                                     const unsigned char *buf,
                                     size_t buf_len );
 
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 
 #endif /* MBEDTLS_ECDH_C */
 
diff --git a/library/mps_reader.c b/library/mps_reader.c
index 9af5073..36958b4 100644
--- a/library/mps_reader.c
+++ b/library/mps_reader.c
@@ -21,7 +21,7 @@
 
 #include "common.h"
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
 
 #include "mps_reader.h"
 #include "mps_common.h"
@@ -561,4 +561,4 @@
     MBEDTLS_MPS_TRACE_RETURN( 0 );
 }
 
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
diff --git a/library/mps_trace.c b/library/mps_trace.c
index 6026a07..e8b4e1b 100644
--- a/library/mps_trace.c
+++ b/library/mps_trace.c
@@ -21,7 +21,7 @@
 
 #include "common.h"
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
 
 #include "mps_common.h"
 
@@ -124,4 +124,4 @@
 }
 
 #endif /* MBEDTLS_MPS_ENABLE_TRACE */
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
diff --git a/library/psa_crypto.c b/library/psa_crypto.c
index 9134dee..9f5b946 100644
--- a/library/psa_crypto.c
+++ b/library/psa_crypto.c
@@ -103,9 +103,9 @@
 
 typedef struct
 {
-    mbedtls_psa_random_context_t rng;
     unsigned initialized : 1;
     unsigned rng_state : 2;
+    mbedtls_psa_random_context_t rng;
 } psa_global_data_t;
 
 static psa_global_data_t global_data;
@@ -3894,6 +3894,15 @@
         goto exit;
     }
 
+    /* For CCM, this size may not be correct according to the PSA
+     * specification. The PSA Crypto 1.0.1 specification states:
+     *
+     * CCM encodes the plaintext length pLen in L octets, with L the smallest
+     * integer >= 2 where pLen < 2^(8L). The nonce length is then 15 - L bytes.
+     *
+     * However this restriction that L has to be the smallest integer is not
+     * applied in practice, and it is not implementable here since the
+     * plaintext length may or may not be known at this time. */
     required_nonce_size = PSA_AEAD_NONCE_LENGTH( operation->key_type,
                                                  operation->alg );
     if( nonce_size < required_nonce_size )
@@ -4056,6 +4065,13 @@
 
         operation->ad_remaining -= input_length;
     }
+#if defined(PSA_WANT_ALG_CCM)
+    else if( operation->alg == PSA_ALG_CCM )
+    {
+        status = PSA_ERROR_BAD_STATE;
+        goto exit;
+    }
+#endif /* PSA_WANT_ALG_CCM */
 
     status = psa_driver_wrapper_aead_update_ad( operation, input,
                                                 input_length );
@@ -4113,6 +4129,13 @@
 
         operation->body_remaining -= input_length;
     }
+#if defined(PSA_WANT_ALG_CCM)
+    else if( operation->alg == PSA_ALG_CCM )
+    {
+        status = PSA_ERROR_BAD_STATE;
+        goto exit;
+    }
+#endif /* PSA_WANT_ALG_CCM */
 
     status = psa_driver_wrapper_aead_update( operation, input, input_length,
                                              output, output_size,
diff --git a/library/psa_crypto_aead.c b/library/psa_crypto_aead.c
index c181415..714d950 100644
--- a/library/psa_crypto_aead.c
+++ b/library/psa_crypto_aead.c
@@ -358,13 +358,6 @@
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
 
-#if defined(MBEDTLS_PSA_BUILTIN_ALG_CCM)
-    if( operation->alg == PSA_ALG_CCM )
-    {
-        return( PSA_ERROR_NOT_SUPPORTED );
-    }
-#endif /* MBEDTLS_PSA_BUILTIN_ALG_CCM */
-
     status = psa_aead_setup( operation, attributes, key_buffer,
                              key_buffer_size, alg );
 
@@ -385,13 +378,6 @@
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
 
-#if defined(MBEDTLS_PSA_BUILTIN_ALG_CCM)
-    if( operation->alg == PSA_ALG_CCM )
-    {
-        return( PSA_ERROR_NOT_SUPPORTED );
-    }
-#endif /* MBEDTLS_PSA_BUILTIN_ALG_CCM */
-
     status = psa_aead_setup( operation, attributes, key_buffer,
                              key_buffer_size, alg );
 
@@ -421,6 +407,18 @@
     }
     else
 #endif /* MBEDTLS_PSA_BUILTIN_ALG_GCM */
+#if defined(MBEDTLS_PSA_BUILTIN_ALG_CCM)
+    if( operation->alg == PSA_ALG_CCM )
+    {
+        status = mbedtls_to_psa_error(
+                   mbedtls_ccm_starts( &operation->ctx.ccm,
+                                       operation->is_encrypt ?
+                                       MBEDTLS_CCM_ENCRYPT : MBEDTLS_CCM_DECRYPT,
+                                       nonce,
+                                       nonce_length ) );
+    }
+    else
+#endif /* MBEDTLS_PSA_BUILTIN_ALG_CCM */
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_CHACHA20_POLY1305)
     if( operation->alg == PSA_ALG_CHACHA20_POLY1305 )
     {
@@ -460,11 +458,21 @@
     size_t ad_length,
     size_t plaintext_length )
 {
-    /* Nothing here yet, work is currently done in PSA Core, however support
-     * for CCM will require this function. */
+#if defined(MBEDTLS_PSA_BUILTIN_ALG_CCM)
+    if( operation->alg == PSA_ALG_CCM )
+    {
+        return( mbedtls_to_psa_error(
+                         mbedtls_ccm_set_lengths( &operation->ctx.ccm,
+                                                 ad_length,
+                                                 plaintext_length,
+                                                 operation->tag_length ) ) );
+
+    }
+#else /* MBEDTLS_PSA_BUILTIN_ALG_CCM */
     ( void ) operation;
     ( void ) ad_length;
     ( void ) plaintext_length;
+#endif /* MBEDTLS_PSA_BUILTIN_ALG_CCM */
 
     return ( PSA_SUCCESS );
 }
@@ -485,6 +493,14 @@
     }
     else
 #endif /* MBEDTLS_PSA_BUILTIN_ALG_GCM */
+#if defined(MBEDTLS_PSA_BUILTIN_ALG_CCM)
+    if( operation->alg == PSA_ALG_CCM )
+    {
+        status = mbedtls_to_psa_error(
+            mbedtls_ccm_update_ad( &operation->ctx.ccm, input, input_length ) );
+    }
+    else
+#endif /* MBEDTLS_PSA_BUILTIN_ALG_CCM */
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_CHACHA20_POLY1305)
     if( operation->alg == PSA_ALG_CHACHA20_POLY1305 )
     {
@@ -532,6 +548,20 @@
     }
     else
 #endif /* MBEDTLS_PSA_BUILTIN_ALG_GCM */
+#if defined(MBEDTLS_PSA_BUILTIN_ALG_CCM)
+    if( operation->alg == PSA_ALG_CCM )
+    {
+        if( output_size < input_length )
+            return( PSA_ERROR_BUFFER_TOO_SMALL );
+
+        status = mbedtls_to_psa_error(
+           mbedtls_ccm_update( &operation->ctx.ccm,
+                               input, input_length,
+                               output, output_size,
+                               &update_output_length ) );
+    }
+    else
+#endif /* MBEDTLS_PSA_BUILTIN_ALG_CCM */
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_CHACHA20_POLY1305)
     if( operation->alg == PSA_ALG_CHACHA20_POLY1305 )
     {
@@ -587,6 +617,20 @@
     }
     else
 #endif /* MBEDTLS_PSA_BUILTIN_ALG_GCM */
+#if defined(MBEDTLS_PSA_BUILTIN_ALG_CCM)
+    if( operation->alg == PSA_ALG_CCM )
+    {
+        /* tag must be big enough to store a tag of size passed into set
+         * lengths. */
+        if( tag_size < operation->tag_length )
+            return( PSA_ERROR_BUFFER_TOO_SMALL );
+
+        status = mbedtls_to_psa_error(
+                           mbedtls_ccm_finish( &operation->ctx.ccm,
+                                               tag, operation->tag_length ) );
+    }
+    else
+#endif /* MBEDTLS_PSA_BUILTIN_ALG_CCM */
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_CHACHA20_POLY1305)
     if( operation->alg == PSA_ALG_CHACHA20_POLY1305 )
     {
diff --git a/library/ssl_ciphersuites.c b/library/ssl_ciphersuites.c
index b10a963..62588dc 100644
--- a/library/ssl_ciphersuites.c
+++ b/library/ssl_ciphersuites.c
@@ -52,14 +52,14 @@
 #if defined(MBEDTLS_SSL_CIPHERSUITES)
     MBEDTLS_SSL_CIPHERSUITES,
 #else
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
     /* TLS 1.3 ciphersuites */
     MBEDTLS_TLS1_3_AES_128_GCM_SHA256,
     MBEDTLS_TLS1_3_AES_256_GCM_SHA384,
     MBEDTLS_TLS1_3_CHACHA20_POLY1305_SHA256,
     MBEDTLS_TLS1_3_AES_128_CCM_SHA256,
     MBEDTLS_TLS1_3_AES_128_CCM_8_SHA256,
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 
     /* Chacha-Poly ephemeral suites */
     MBEDTLS_TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,
@@ -292,7 +292,7 @@
 
 static const mbedtls_ssl_ciphersuite_t ciphersuite_definitions[] =
 {
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
 #if defined(MBEDTLS_AES_C)
 #if defined(MBEDTLS_GCM_C)
 #if defined(MBEDTLS_SHA384_C)
@@ -336,7 +336,7 @@
       MBEDTLS_SSL_MAJOR_VERSION_3, MBEDTLS_SSL_MINOR_VERSION_4,
       0 },
 #endif /* MBEDTLS_CHACHAPOLY_C && MBEDTLS_SHA256_C */
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 
 #if defined(MBEDTLS_CHACHAPOLY_C) && \
     defined(MBEDTLS_SHA256_C) && \
diff --git a/library/ssl_misc.h b/library/ssl_misc.h
index a94c79f..40e4aaf 100644
--- a/library/ssl_misc.h
+++ b/library/ssl_misc.h
@@ -525,25 +525,79 @@
  */
 struct mbedtls_ssl_handshake_params
 {
+    /* Frequently-used boolean or byte fields (placed early to take
+     * advantage of smaller code size for indirect access on Arm Thumb) */
+    uint8_t max_major_ver;              /*!< max. major version client*/
+    uint8_t max_minor_ver;              /*!< max. minor version client*/
+    uint8_t resume;                     /*!<  session resume indicator*/
+    uint8_t cli_exts;                   /*!< client extension presence*/
+
+#if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION)
+    uint8_t sni_authmode;               /*!< authmode from SNI callback     */
+#endif
+
+#if defined(MBEDTLS_SSL_SESSION_TICKETS)
+    uint8_t new_session_ticket;         /*!< use NewSessionTicket?    */
+#endif /* MBEDTLS_SSL_SESSION_TICKETS */
+
+#if defined(MBEDTLS_SSL_EXTENDED_MASTER_SECRET)
+    uint8_t extended_ms;                /*!< use Extended Master Secret? */
+#endif
+
+#if defined(MBEDTLS_SSL_ASYNC_PRIVATE)
+    uint8_t async_in_progress; /*!< an asynchronous operation is in progress */
+#endif /* MBEDTLS_SSL_ASYNC_PRIVATE */
+
+#if defined(MBEDTLS_SSL_PROTO_DTLS)
+    unsigned char retransmit_state;     /*!<  Retransmission state           */
+#endif
+
+#if !defined(MBEDTLS_DEPRECATED_REMOVED)
+    unsigned char group_list_heap_allocated;
+#endif
+
+#if defined(MBEDTLS_SSL_ECP_RESTARTABLE_ENABLED)
+    uint8_t ecrs_enabled;               /*!< Handshake supports EC restart? */
+    enum { /* this complements ssl->state with info on intra-state operations */
+        ssl_ecrs_none = 0,              /*!< nothing going on (yet)         */
+        ssl_ecrs_crt_verify,            /*!< Certificate: crt_verify()      */
+        ssl_ecrs_ske_start_processing,  /*!< ServerKeyExchange: pk_verify() */
+        ssl_ecrs_cke_ecdh_calc_secret,  /*!< ClientKeyExchange: ECDH step 2 */
+        ssl_ecrs_crt_vrfy_sign,         /*!< CertificateVerify: pk_sign()   */
+    } ecrs_state;                       /*!< current (or last) operation    */
+    mbedtls_x509_crt *ecrs_peer_cert;   /*!< The peer's CRT chain.          */
+    size_t ecrs_n;                      /*!< place for saving a length      */
+#endif
+
+    size_t pmslen;                      /*!<  premaster length        */
+
+    mbedtls_ssl_ciphersuite_t const *ciphersuite_info;
+
+    void (*update_checksum)(mbedtls_ssl_context *, const unsigned char *, size_t);
+    void (*calc_verify)(const mbedtls_ssl_context *, unsigned char *, size_t *);
+    void (*calc_finished)(mbedtls_ssl_context *, unsigned char *, int);
+    mbedtls_ssl_tls_prf_cb *tls_prf;
+
     /*
      * Handshake specific crypto variables
      */
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
     int tls13_kex_modes; /*!< key exchange modes for TLS 1.3 */
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
-
-#if !defined(MBEDTLS_DEPRECATED_REMOVED)
-    const uint16_t *group_list;
-    unsigned char group_list_heap_allocated;
-#endif
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 
 #if defined(MBEDTLS_SSL_PROTO_TLS1_2) && \
     defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
     mbedtls_ssl_sig_hash_set_t hash_algs;             /*!<  Set of suitable sig-hash pairs */
 #endif
+
+#if !defined(MBEDTLS_DEPRECATED_REMOVED)
+    const uint16_t *group_list;
+#endif
+
 #if defined(MBEDTLS_DHM_C)
     mbedtls_dhm_context dhm_ctx;                /*!<  DHM key exchange        */
 #endif
+
 /* Adding guard for MBEDTLS_ECDSA_C to ensure no compile errors due
  * to guards also being in ssl_srv.c and ssl_cli.c. There is a gap
  * in functionality that access to ecdh_ctx structure is needed for
@@ -568,10 +622,12 @@
     size_t ecjpake_cache_len;                   /*!< Length of cached data */
 #endif
 #endif /* MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED */
-#if defined(MBEDTLS_ECDH_C) || defined(MBEDTLS_ECDSA_C) || \
+
+#if defined(MBEDTLS_ECDH_C) || defined(MBEDTLS_ECDSA_C) ||      \
     defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
     const mbedtls_ecp_curve_info **curves;      /*!<  Supported elliptic curves */
 #endif
+
 #if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
     psa_key_id_t psk_opaque;            /*!< Opaque PSK from the callback   */
@@ -579,64 +635,24 @@
     unsigned char *psk;                 /*!<  PSK from the callback         */
     size_t psk_len;                     /*!<  Length of PSK from callback   */
 #endif /* MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED */
+
+#if defined(MBEDTLS_SSL_ECP_RESTARTABLE_ENABLED)
+    mbedtls_x509_crt_restart_ctx ecrs_ctx;  /*!< restart context            */
+#endif
+
 #if defined(MBEDTLS_X509_CRT_PARSE_C)
     mbedtls_ssl_key_cert *key_cert;     /*!< chosen key/cert pair (server)  */
 #if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION)
-    int sni_authmode;                   /*!< authmode from SNI callback     */
     mbedtls_ssl_key_cert *sni_key_cert; /*!< key/cert list from SNI         */
     mbedtls_x509_crt *sni_ca_chain;     /*!< trusted CAs from SNI callback  */
     mbedtls_x509_crl *sni_ca_crl;       /*!< trusted CAs CRLs from SNI      */
 #endif /* MBEDTLS_SSL_SERVER_NAME_INDICATION */
 #endif /* MBEDTLS_X509_CRT_PARSE_C */
-#if defined(MBEDTLS_SSL_ECP_RESTARTABLE_ENABLED)
-    int ecrs_enabled;                   /*!< Handshake supports EC restart? */
-    mbedtls_x509_crt_restart_ctx ecrs_ctx;  /*!< restart context            */
-    enum { /* this complements ssl->state with info on intra-state operations */
-        ssl_ecrs_none = 0,              /*!< nothing going on (yet)         */
-        ssl_ecrs_crt_verify,            /*!< Certificate: crt_verify()      */
-        ssl_ecrs_ske_start_processing,  /*!< ServerKeyExchange: pk_verify() */
-        ssl_ecrs_cke_ecdh_calc_secret,  /*!< ClientKeyExchange: ECDH step 2 */
-        ssl_ecrs_crt_vrfy_sign,         /*!< CertificateVerify: pk_sign()   */
-    } ecrs_state;                       /*!< current (or last) operation    */
-    mbedtls_x509_crt *ecrs_peer_cert;   /*!< The peer's CRT chain.          */
-    size_t ecrs_n;                      /*!< place for saving a length      */
-#endif
-#if defined(MBEDTLS_X509_CRT_PARSE_C) && \
+
+#if defined(MBEDTLS_X509_CRT_PARSE_C) &&        \
     !defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE)
     mbedtls_pk_context peer_pubkey;     /*!< The public key from the peer.  */
 #endif /* MBEDTLS_X509_CRT_PARSE_C && !MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */
-#if defined(MBEDTLS_SSL_PROTO_DTLS)
-    unsigned int out_msg_seq;           /*!<  Outgoing handshake sequence number */
-    unsigned int in_msg_seq;            /*!<  Incoming handshake sequence number */
-
-    unsigned char *verify_cookie;       /*!<  Cli: HelloVerifyRequest cookie
-                                              Srv: unused                    */
-    unsigned char verify_cookie_len;    /*!<  Cli: cookie length
-                                              Srv: flag for sending a cookie */
-
-    uint32_t retransmit_timeout;        /*!<  Current value of timeout       */
-    unsigned char retransmit_state;     /*!<  Retransmission state           */
-    mbedtls_ssl_flight_item *flight;    /*!<  Current outgoing flight        */
-    mbedtls_ssl_flight_item *cur_msg;   /*!<  Current message in flight      */
-    unsigned char *cur_msg_p;           /*!<  Position in current message    */
-    unsigned int in_flight_start_seq;   /*!<  Minimum message sequence in the
-                                              flight being received          */
-    mbedtls_ssl_transform *alt_transform_out;   /*!<  Alternative transform for
-                                              resending messages             */
-    unsigned char alt_out_ctr[MBEDTLS_SSL_SEQUENCE_NUMBER_LEN]; /*!<  Alternative record epoch/counter
-                                                                      for resending messages         */
-
-#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
-    /* The state of CID configuration in this handshake. */
-
-    uint8_t cid_in_use; /*!< This indicates whether the use of the CID extension
-                         *   has been negotiated. Possible values are
-                         *   #MBEDTLS_SSL_CID_ENABLED and
-                         *   #MBEDTLS_SSL_CID_DISABLED. */
-    unsigned char peer_cid[ MBEDTLS_SSL_CID_OUT_LEN_MAX ]; /*! The peer's CID */
-    uint8_t peer_cid_len;                                  /*!< The length of
-                                                            *   \c peer_cid.  */
-#endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
 
     struct
     {
@@ -664,15 +680,47 @@
 
     } buffering;
 
+#if defined(MBEDTLS_SSL_PROTO_DTLS)
+    unsigned int out_msg_seq;           /*!<  Outgoing handshake sequence number */
+    unsigned int in_msg_seq;            /*!<  Incoming handshake sequence number */
+
+    unsigned char *verify_cookie;       /*!<  Cli: HelloVerifyRequest cookie
+                                              Srv: unused                    */
+    unsigned char verify_cookie_len;    /*!<  Cli: cookie length
+                                              Srv: flag for sending a cookie */
+
+    uint32_t retransmit_timeout;        /*!<  Current value of timeout       */
+    mbedtls_ssl_flight_item *flight;    /*!<  Current outgoing flight        */
+    mbedtls_ssl_flight_item *cur_msg;   /*!<  Current message in flight      */
+    unsigned char *cur_msg_p;           /*!<  Position in current message    */
+    unsigned int in_flight_start_seq;   /*!<  Minimum message sequence in the
+                                              flight being received          */
+    mbedtls_ssl_transform *alt_transform_out;   /*!<  Alternative transform for
+                                              resending messages             */
+    unsigned char alt_out_ctr[MBEDTLS_SSL_SEQUENCE_NUMBER_LEN]; /*!<  Alternative record epoch/counter
+                                                                      for resending messages         */
+
+#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
+    /* The state of CID configuration in this handshake. */
+
+    uint8_t cid_in_use; /*!< This indicates whether the use of the CID extension
+                         *   has been negotiated. Possible values are
+                         *   #MBEDTLS_SSL_CID_ENABLED and
+                         *   #MBEDTLS_SSL_CID_DISABLED. */
+    unsigned char peer_cid[ MBEDTLS_SSL_CID_OUT_LEN_MAX ]; /*! The peer's CID */
+    uint8_t peer_cid_len;                                  /*!< The length of
+                                                            *   \c peer_cid.  */
+#endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
+
     uint16_t mtu;                       /*!<  Handshake mtu, used to fragment outgoing messages */
 #endif /* MBEDTLS_SSL_PROTO_DTLS */
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
     /*! TLS 1.3 transforms for 0-RTT and encrypted handshake messages.
      *  Those pointers own the transforms they reference. */
     mbedtls_ssl_transform *transform_handshake;
     mbedtls_ssl_transform *transform_earlydata;
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 
     /*
      * Checksum contexts
@@ -694,12 +742,7 @@
 #endif
 #endif /* MBEDTLS_SSL_PROTO_TLS1_2 */
 
-    void (*update_checksum)(mbedtls_ssl_context *, const unsigned char *, size_t);
-    void (*calc_verify)(const mbedtls_ssl_context *, unsigned char *, size_t *);
-    void (*calc_finished)(mbedtls_ssl_context *, unsigned char *, int);
-    mbedtls_ssl_tls_prf_cb *tls_prf;
-
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
     uint16_t offered_group_id; /* The NamedGroup value for the group
                                 * that is being used for ephemeral
                                 * key exchange.
@@ -707,7 +750,7 @@
                                 * On the client: Defaults to the first
                                 * entry in the client's group list,
                                 * but can be overwritten by the HRR. */
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 
     /*
      * State-local variables used during the processing
@@ -741,21 +784,13 @@
 
     /* End of state-local variables. */
 
-    mbedtls_ssl_ciphersuite_t const *ciphersuite_info;
-
-    size_t pmslen;                      /*!<  premaster length        */
-
     unsigned char randbytes[MBEDTLS_CLIENT_HELLO_RANDOM_LEN +
                             MBEDTLS_SERVER_HELLO_RANDOM_LEN];
                                         /*!<  random bytes            */
     unsigned char premaster[MBEDTLS_PREMASTER_SIZE];
                                         /*!<  premaster secret        */
 
-    int resume;                         /*!<  session resume indicator*/
-    int max_major_ver;                  /*!< max. major version client*/
-    int max_minor_ver;                  /*!< max. minor version client*/
-    int cli_exts;                       /*!< client extension presence*/
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
     int extensions_present;             /*!< extension presence; Each bitfield
                                              represents an extension and defined
                                              as \c MBEDTLS_SSL_EXT_XXX */
@@ -768,18 +803,7 @@
     } tls13_master_secrets;
 
     mbedtls_ssl_tls13_handshake_secrets tls13_hs_secrets;
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
-
-#if defined(MBEDTLS_SSL_SESSION_TICKETS)
-    int new_session_ticket;             /*!< use NewSessionTicket?    */
-#endif /* MBEDTLS_SSL_SESSION_TICKETS */
-#if defined(MBEDTLS_SSL_EXTENDED_MASTER_SECRET)
-    int extended_ms;                    /*!< use Extended Master Secret? */
-#endif
-
-#if defined(MBEDTLS_SSL_ASYNC_PRIVATE)
-    unsigned int async_in_progress : 1; /*!< an asynchronous operation is in progress */
-#endif /* MBEDTLS_SSL_ASYNC_PRIVATE */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 
 #if defined(MBEDTLS_SSL_ASYNC_PRIVATE)
     /** Asynchronous operation context. This field is meant for use by the
@@ -1453,7 +1477,7 @@
  * ssl utils functions for checking configuration.
  */
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
 static inline int mbedtls_ssl_conf_is_tls13_only( const mbedtls_ssl_config *conf )
 {
     if( conf->min_major_ver == MBEDTLS_SSL_MAJOR_VERSION_3 &&
@@ -1465,7 +1489,7 @@
     }
     return( 0 );
 }
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 
 #if defined(MBEDTLS_SSL_PROTO_TLS1_2)
 static inline int mbedtls_ssl_conf_is_tls12_only( const mbedtls_ssl_config *conf )
@@ -1481,7 +1505,7 @@
 }
 #endif /* MBEDTLS_SSL_PROTO_TLS1_2 */
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_2) && defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_2) && defined(MBEDTLS_SSL_PROTO_TLS1_3)
 static inline int mbedtls_ssl_conf_is_hybrid_tls12_tls13( const mbedtls_ssl_config *conf )
 {
     if( conf->min_major_ver == MBEDTLS_SSL_MAJOR_VERSION_3 &&
@@ -1493,9 +1517,9 @@
     }
     return( 0 );
 }
-#endif /* MBEDTLS_SSL_PROTO_TLS1_2 && MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL*/
+#endif /* MBEDTLS_SSL_PROTO_TLS1_2 && MBEDTLS_SSL_PROTO_TLS1_3 */
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
 
 int mbedtls_ssl_tls13_process_finished_message( mbedtls_ssl_context *ssl );
 int mbedtls_ssl_tls13_write_finished_message( mbedtls_ssl_context *ssl );
@@ -1653,6 +1677,11 @@
 int mbedtls_ssl_tls13_process_certificate_verify( mbedtls_ssl_context *ssl );
 
 /*
+ * Write of dummy-CCS's for middlebox compatibility
+ */
+int mbedtls_ssl_tls13_write_change_cipher_spec( mbedtls_ssl_context *ssl );
+
+/*
  * Write TLS 1.3 handshake message tail
  */
 int mbedtls_ssl_tls13_finish_handshake_msg( mbedtls_ssl_context *ssl,
@@ -1682,7 +1711,7 @@
 
 #endif /* MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED */
 
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 
 /* Get handshake transcript */
 int mbedtls_ssl_get_handshake_transcript( mbedtls_ssl_context *ssl,
diff --git a/library/ssl_msg.c b/library/ssl_msg.c
index 286294f..7c523ee 100644
--- a/library/ssl_msg.c
+++ b/library/ssl_msg.c
@@ -293,8 +293,7 @@
  * Encryption/decryption functions
  */
 
-#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) ||  \
-    defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) || defined(MBEDTLS_SSL_PROTO_TLS1_3)
 
 static size_t ssl_compute_padding_length( size_t len,
                                           size_t granularity )
@@ -376,8 +375,7 @@
 
     return( 0 );
 }
-#endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID ||
-          MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID || MBEDTLS_SSL_PROTO_TLS1_3 */
 
 /* `add_data` must have size 13 Bytes if the CID extension is disabled,
  * and 13 + 1 + CID-length Bytes if the CID extension is enabled. */
@@ -422,7 +420,7 @@
     unsigned char *cur = add_data;
     size_t ad_len_field = rec->data_len;
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
     if( minor_ver == MBEDTLS_SSL_MINOR_VERSION_4 )
     {
         /* In TLS 1.3, the AAD contains the length of the TLSCiphertext,
@@ -431,7 +429,7 @@
         ad_len_field += taglen;
     }
     else
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
     {
         ((void) minor_ver);
         ((void) taglen);
@@ -593,7 +591,7 @@
      * since they apply to different versions of the protocol. There
      * is hence no risk of double-addition of the inner plaintext.
      */
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
     if( transform->minor_ver == MBEDTLS_SSL_MINOR_VERSION_4 )
     {
         size_t padding =
@@ -610,7 +608,7 @@
 
         rec->type = MBEDTLS_SSL_MSG_APPLICATION_DATA;
     }
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 
 #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
     /*
@@ -1459,7 +1457,7 @@
         return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
     }
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
     if( transform->minor_ver == MBEDTLS_SSL_MINOR_VERSION_4 )
     {
         /* Remove inner padding and infer true content type. */
@@ -1469,7 +1467,7 @@
         if( ret != 0 )
             return( MBEDTLS_ERR_SSL_INVALID_RECORD );
     }
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 
 #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
     if( rec->cid_len != 0 )
@@ -2325,12 +2323,12 @@
         /* Skip writing the record content type to after the encryption,
          * as it may change when using the CID extension. */
         int minor_ver = ssl->minor_ver;
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
         /* TLS 1.3 still uses the TLS 1.2 version identifier
          * for backwards compatibility. */
         if( minor_ver == MBEDTLS_SSL_MINOR_VERSION_4 )
             minor_ver = MBEDTLS_SSL_MINOR_VERSION_3;
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
         mbedtls_ssl_write_version( ssl->major_ver, minor_ver,
                                    ssl->conf->transport, ssl->out_hdr + 1 );
 
@@ -3335,6 +3333,20 @@
     MBEDTLS_SSL_DEBUG_BUF( 4, "input record from network",
                            rec->buf, rec->buf_len );
 
+    /*
+     * In TLS 1.3, always treat ChangeCipherSpec records
+     * as unencrypted. The only thing we do with them is
+     * check the length and content and ignore them.
+     */
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
+    if( ssl->transform_in != NULL &&
+        ssl->transform_in->minor_ver == MBEDTLS_SSL_MINOR_VERSION_4 )
+    {
+        if( rec->type == MBEDTLS_SSL_MSG_CHANGE_CIPHER_SPEC )
+            done = 1;
+    }
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
+
     if( !done && ssl->transform_in != NULL )
     {
         unsigned char const old_msg_type = rec->type;
@@ -4385,6 +4397,21 @@
             return( MBEDTLS_ERR_SSL_EARLY_MESSAGE );
         }
 #endif
+
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
+        if( ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_4 )
+        {
+#if defined(MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE)
+            MBEDTLS_SSL_DEBUG_MSG( 1,
+                ( "Ignore ChangeCipherSpec in TLS 1.3 compatibility mode" ) );
+            return( MBEDTLS_ERR_SSL_CONTINUE_PROCESSING );
+#else
+            MBEDTLS_SSL_DEBUG_MSG( 1,
+                ( "ChangeCipherSpec invalid in TLS 1.3 without compatibility mode" ) );
+            return( MBEDTLS_ERR_SSL_INVALID_RECORD );
+#endif /* MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE */
+        }
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
     }
 
     if( ssl->in_msgtype == MBEDTLS_SSL_MSG_ALERT )
diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index 3d5eb1e..12ebc06 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -184,6 +184,10 @@
     mbedtls_ssl_session_free( dst );
     memcpy( dst, src, sizeof( mbedtls_ssl_session ) );
 
+#if defined(MBEDTLS_SSL_SESSION_TICKETS) && defined(MBEDTLS_SSL_CLI_C)
+    dst->ticket = NULL;
+#endif
+
 #if defined(MBEDTLS_X509_CRT_PARSE_C)
 
 #if defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE)
@@ -716,14 +720,14 @@
     memcpy( transform->randbytes, randbytes, sizeof( transform->randbytes ) );
 #endif
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
     if( minor_ver == MBEDTLS_SSL_MINOR_VERSION_4 )
     {
         /* At the moment, we keep TLS <= 1.2 and TLS 1.3 transform
          * generation separate. This should never happen. */
         return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
     }
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 
     /*
      * Get various info structures
@@ -3162,7 +3166,7 @@
 
 static int ssl_conf_version_check( const mbedtls_ssl_context *ssl )
 {
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
     if( mbedtls_ssl_conf_is_tls13_only( ssl->conf ) )
     {
         if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
@@ -3183,7 +3187,7 @@
     }
 #endif
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_2) && defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_2) && defined(MBEDTLS_SSL_PROTO_TLS1_3)
     if( mbedtls_ssl_conf_is_hybrid_tls12_tls13( ssl->conf ) )
     {
         MBEDTLS_SSL_DEBUG_MSG( 1, ( "Hybrid TLS 1.2 + TLS 1.3 configurations are not yet supported" ) );
@@ -3570,13 +3574,13 @@
     conf->ciphersuite_list = ciphersuites;
 }
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
 void mbedtls_ssl_conf_tls13_key_exchange_modes( mbedtls_ssl_config *conf,
                                                 const int kex_modes )
 {
     conf->tls13_kex_modes = kex_modes & MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_ALL;
 }
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 
 #if defined(MBEDTLS_X509_CRT_PARSE_C)
 void mbedtls_ssl_conf_cert_profile( mbedtls_ssl_config *conf,
@@ -3964,14 +3968,14 @@
     conf->sig_hashes = hashes;
 }
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
 /* Configure allowed signature algorithms for use in TLS 1.3 */
 void mbedtls_ssl_conf_sig_algs( mbedtls_ssl_config *conf,
                                 const uint16_t* sig_algs )
 {
     conf->tls13_sig_algs = sig_algs;
 }
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 #endif /* MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED */
 
 #if defined(MBEDTLS_ECP_C)
@@ -5215,10 +5219,10 @@
 #if defined(MBEDTLS_SSL_CLI_C)
     if( ssl->conf->endpoint == MBEDTLS_SSL_IS_CLIENT )
     {
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
         if( mbedtls_ssl_conf_is_tls13_only( ssl->conf ) )
             ret = mbedtls_ssl_tls13_handshake_client_step( ssl );
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 
 #if defined(MBEDTLS_SSL_PROTO_TLS1_2)
         if( mbedtls_ssl_conf_is_tls12_only( ssl->conf ) )
@@ -5229,10 +5233,10 @@
 #if defined(MBEDTLS_SSL_SRV_C)
     if( ssl->conf->endpoint == MBEDTLS_SSL_IS_SERVER )
     {
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
         if( mbedtls_ssl_conf_is_tls13_only( ssl->conf ) )
             ret = mbedtls_ssl_tls13_handshake_server_step( ssl );
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 
 #if defined(MBEDTLS_SSL_PROTO_TLS1_2)
         if( mbedtls_ssl_conf_is_tls12_only( ssl->conf ) )
@@ -5552,12 +5556,12 @@
     psa_destroy_key( handshake->ecdh_psa_privkey );
 #endif /* MBEDTLS_ECDH_C && MBEDTLS_USE_PSA_CRYPTO */
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
     mbedtls_ssl_transform_free( handshake->transform_handshake );
     mbedtls_ssl_transform_free( handshake->transform_earlydata );
     mbedtls_free( handshake->transform_earlydata );
     mbedtls_free( handshake->transform_handshake );
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 
 
 #if defined(MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH)
@@ -6253,10 +6257,10 @@
         mbedtls_free( ssl->session_negotiate );
     }
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
     mbedtls_ssl_transform_free( ssl->transform_application );
     mbedtls_free( ssl->transform_application );
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 
     if( ssl->session )
     {
@@ -6357,16 +6361,16 @@
     MBEDTLS_MD_NONE
 };
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
 static uint16_t ssl_preset_default_sig_algs[] = {
     /* ECDSA algorithms */
 #if defined(MBEDTLS_ECDSA_C)
 #if defined(MBEDTLS_SHA256_C) && defined(MBEDTLS_ECP_DP_SECP256R1_ENABLED)
     MBEDTLS_TLS1_3_SIG_ECDSA_SECP256R1_SHA256,
 #endif /* MBEDTLS_SHA256_C && MBEDTLS_ECP_DP_SECP256R1_ENABLED */
-#if defined(MBEDTLS_SHA512_C) && defined(MBEDTLS_ECP_DP_SECP384R1_ENABLED)
+#if defined(MBEDTLS_SHA384_C) && defined(MBEDTLS_ECP_DP_SECP384R1_ENABLED)
     MBEDTLS_TLS1_3_SIG_ECDSA_SECP384R1_SHA384,
-#endif /* MBEDTLS_SHA512_C && MBEDTLS_ECP_DP_SECP384R1_ENABLED */
+#endif /* MBEDTLS_SHA384_C && MBEDTLS_ECP_DP_SECP384R1_ENABLED */
 #if defined(MBEDTLS_SHA512_C) && defined(MBEDTLS_ECP_DP_SECP521R1_ENABLED)
     MBEDTLS_TLS1_3_SIG_ECDSA_SECP521R1_SHA512,
 #endif /* MBEDTLS_SHA512_C && MBEDTLS_ECP_DP_SECP521R1_ENABLED */
@@ -6387,9 +6391,9 @@
 #if defined(MBEDTLS_SHA256_C) && defined(MBEDTLS_ECP_DP_SECP256R1_ENABLED)
     MBEDTLS_TLS1_3_SIG_ECDSA_SECP256R1_SHA256,
 #endif /* MBEDTLS_SHA256_C && MBEDTLS_ECP_DP_SECP256R1_ENABLED */
-#if defined(MBEDTLS_SHA512_C) && defined(MBEDTLS_ECP_DP_SECP384R1_ENABLED)
+#if defined(MBEDTLS_SHA384_C) && defined(MBEDTLS_ECP_DP_SECP384R1_ENABLED)
     MBEDTLS_TLS1_3_SIG_ECDSA_SECP384R1_SHA384,
-#endif /* MBEDTLS_SHA512_C && MBEDTLS_ECP_DP_SECP384R1_ENABLED */
+#endif /* MBEDTLS_SHA384_C && MBEDTLS_ECP_DP_SECP384R1_ENABLED */
 #endif /* MBEDTLS_ECDSA_C */
 
     /* RSA algorithms */
@@ -6400,7 +6404,7 @@
 
     MBEDTLS_TLS1_3_SIG_NONE
 };
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 #endif
 
 static uint16_t ssl_preset_suiteb_groups[] = {
@@ -6491,12 +6495,12 @@
     }
 #endif
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
     /*
      * Allow all TLS 1.3 key exchange modes by default.
      */
     conf->tls13_kex_modes = MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_ALL;
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 
     /*
      * Preset-specific defaults
@@ -6520,9 +6524,9 @@
 
 #if defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
             conf->sig_hashes = ssl_preset_suiteb_hashes;
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
             conf->tls13_sig_algs = ssl_preset_suiteb_sig_algs;
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 #endif
 
 #if defined(MBEDTLS_ECP_C) && !defined(MBEDTLS_DEPRECATED_REMOVED)
@@ -6558,9 +6562,9 @@
 
 #if defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
             conf->sig_hashes = ssl_preset_default_hashes;
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
             conf->tls13_sig_algs = ssl_preset_default_sig_algs;
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 #endif /* MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED */
 
 #if defined(MBEDTLS_ECP_C) && !defined(MBEDTLS_DEPRECATED_REMOVED)
diff --git a/library/ssl_tls13_client.c b/library/ssl_tls13_client.c
index 1874d4f..31d7daf 100644
--- a/library/ssl_tls13_client.c
+++ b/library/ssl_tls13_client.c
@@ -21,7 +21,7 @@
 
 #include "common.h"
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
 
 #if defined(MBEDTLS_SSL_CLI_C)
 
@@ -34,6 +34,7 @@
 #include "ssl_misc.h"
 #include "ecdh_misc.h"
 #include "ssl_tls13_keys.h"
+#include "ssl_debug_helpers_generated.h"
 
 /* Write extensions */
 
@@ -723,8 +724,18 @@
      * ( also known as ossification ). Otherwise, it MUST be set as a zero-length
      * vector ( i.e., a zero-valued single byte length field ).
      */
+#if defined(MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE)
+    MBEDTLS_SSL_CHK_BUF_PTR( p, end, ssl->session_negotiate->id_len + 1 );
+    *p++ = (unsigned char)ssl->session_negotiate->id_len;
+    memcpy( p, ssl->session_negotiate->id, ssl->session_negotiate->id_len );
+    p += ssl->session_negotiate->id_len;
+
+    MBEDTLS_SSL_DEBUG_BUF( 3, "session id", ssl->session_negotiate->id,
+                              ssl->session_negotiate->id_len );
+#else
     MBEDTLS_SSL_CHK_BUF_PTR( p, end, 1 );
     *p++ = 0; /* session id length set to zero */
+#endif /* MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE */
 
     /* Write cipher_suites */
     ret = ssl_tls13_write_client_hello_cipher_suites( ssl, p, end, &output_len );
@@ -843,6 +854,24 @@
         return( ret );
     }
 
+#if defined(MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE)
+    /*
+     * Create a session identifier for the purpose of middlebox compatibility
+     * only if one has not been created already.
+     */
+    if( ssl->session_negotiate->id_len == 0 )
+    {
+        /* Creating a session id with 32 byte length */
+        if( ( ret = ssl->conf->f_rng( ssl->conf->p_rng,
+                                      ssl->session_negotiate->id, 32 ) ) != 0 )
+        {
+            MBEDTLS_SSL_DEBUG_RET( 1, "creating session id failed", ret );
+            return( ret );
+        }
+        ssl->session_negotiate->id_len = 32;
+    }
+#endif /* MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE */
+
     return( 0 );
 }
 
@@ -1600,6 +1629,7 @@
     return( 0 );
 }
 #endif /* MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED */
+
 /*
  * Handler for MBEDTLS_SSL_SERVER_FINISHED
  */
@@ -1611,18 +1641,44 @@
     if( ret != 0 )
         return( ret );
 
-    mbedtls_ssl_set_outbound_transform( ssl, ssl->handshake->transform_handshake );
+#if defined(MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE)
+    mbedtls_ssl_handshake_set_state(
+        ssl,
+        MBEDTLS_SSL_CLIENT_CCS_AFTER_SERVER_FINISHED );
+#else
     mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_CLIENT_FINISHED );
+#endif
+
     return( 0 );
 }
 
 /*
+ * Handler for MBEDTLS_SSL_CLIENT_CCS_AFTER_SERVER_FINISHED
+ */
+#if defined(MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE)
+static int ssl_tls13_write_change_cipher_spec( mbedtls_ssl_context *ssl )
+{
+    int ret;
+
+    ret = mbedtls_ssl_tls13_write_change_cipher_spec( ssl );
+    if( ret != 0 )
+        return( ret );
+
+    mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_CLIENT_FINISHED );
+
+    return( 0 );
+}
+#endif /* MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE */
+
+/*
  * Handler for MBEDTLS_SSL_CLIENT_FINISHED
  */
 static int ssl_tls13_write_client_finished( mbedtls_ssl_context *ssl )
 {
     int ret;
 
+    mbedtls_ssl_set_outbound_transform( ssl, ssl->handshake->transform_handshake );
+
     ret = mbedtls_ssl_tls13_write_finished_message( ssl );
     if( ret != 0 )
         return( ret );
@@ -1662,7 +1718,9 @@
 {
     int ret = 0;
 
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "tls13 client state: %d", ssl->state ) );
+    MBEDTLS_SSL_DEBUG_MSG( 2, ( "tls13 client state: %s(%d)",
+                                mbedtls_ssl_states_str( ssl->state ),
+                                ssl->state ) );
 
     switch( ssl->state )
     {
@@ -1713,6 +1771,15 @@
             ret = ssl_tls13_handshake_wrapup( ssl );
             break;
 
+        /*
+         * Injection of dummy-CCS's for middlebox compatibility
+         */
+#if defined(MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE)
+        case MBEDTLS_SSL_CLIENT_CCS_AFTER_SERVER_FINISHED:
+            ret = ssl_tls13_write_change_cipher_spec( ssl );
+            break;
+#endif /* MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE */
+
         default:
             MBEDTLS_SSL_DEBUG_MSG( 1, ( "invalid state %d", ssl->state ) );
             return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
@@ -1723,4 +1790,4 @@
 
 #endif /* MBEDTLS_SSL_CLI_C */
 
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
diff --git a/library/ssl_tls13_generic.c b/library/ssl_tls13_generic.c
index 066147a..1260740 100644
--- a/library/ssl_tls13_generic.c
+++ b/library/ssl_tls13_generic.c
@@ -21,7 +21,7 @@
 
 #if defined(MBEDTLS_SSL_TLS_C)
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
 
 #include <string.h>
 
@@ -1063,7 +1063,7 @@
 
     if( ret != 0 )
     {
-         MBEDTLS_SSL_DEBUG_RET( 1, "calculate_verify_data failed", ret );
+        MBEDTLS_SSL_DEBUG_RET( 1, "calculate_verify_data failed", ret );
         return( ret );
     }
 
@@ -1148,6 +1148,54 @@
     MBEDTLS_SSL_DEBUG_MSG( 3, ( "<= handshake wrapup" ) );
 }
 
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+/*
+ *
+ * STATE HANDLING: Write ChangeCipherSpec
+ *
+ */
+#if defined(MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE)
+
+static int ssl_tls13_write_change_cipher_spec_body( mbedtls_ssl_context *ssl,
+                                                    unsigned char *buf,
+                                                    unsigned char *end,
+                                                    size_t *olen )
+{
+    ((void) ssl);
+
+    MBEDTLS_SSL_CHK_BUF_PTR( buf, end, 1 );
+    buf[0] = 1;
+    *olen = 1;
+
+    return( 0 );
+}
+
+int mbedtls_ssl_tls13_write_change_cipher_spec( mbedtls_ssl_context *ssl )
+{
+    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
+
+    MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write change cipher spec" ) );
+
+    MBEDTLS_SSL_PROC_CHK( mbedtls_ssl_flush_output( ssl ) );
+
+    /* Write CCS message */
+    MBEDTLS_SSL_PROC_CHK( ssl_tls13_write_change_cipher_spec_body(
+                              ssl, ssl->out_msg,
+                              ssl->out_msg + MBEDTLS_SSL_OUT_CONTENT_LEN,
+                              &ssl->out_msglen ) );
+
+    ssl->out_msgtype = MBEDTLS_SSL_MSG_CHANGE_CIPHER_SPEC;
+
+    /* Dispatch message */
+    MBEDTLS_SSL_PROC_CHK( mbedtls_ssl_write_record( ssl, 1 ) );
+
+cleanup:
+
+    MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write change cipher spec" ) );
+    return( ret );
+}
+
+#endif /* MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE */
+
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 
 #endif /* MBEDTLS_SSL_TLS_C */
diff --git a/library/ssl_tls13_keys.c b/library/ssl_tls13_keys.c
index 45fb5ed..99eb8a4 100644
--- a/library/ssl_tls13_keys.c
+++ b/library/ssl_tls13_keys.c
@@ -19,7 +19,7 @@
 
 #include "common.h"
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
 
 #include <stdint.h>
 #include <string.h>
@@ -654,7 +654,10 @@
     unsigned char transcript[MBEDTLS_TLS1_3_MD_MAX_SIZE];
     size_t transcript_len;
 
-    unsigned char const *base_key = NULL;
+    unsigned char *base_key = NULL;
+    size_t base_key_len = 0;
+    mbedtls_ssl_tls13_handshake_secrets *tls13_hs_secrets =
+                                            &ssl->handshake->tls13_hs_secrets;
 
     mbedtls_md_type_t const md_type = ssl->handshake->ciphersuite_info->mac;
     const mbedtls_md_info_t* const md_info =
@@ -663,8 +666,22 @@
 
     MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> mbedtls_ssl_tls13_calculate_verify_data" ) );
 
+    if( from == MBEDTLS_SSL_IS_CLIENT )
+    {
+        base_key = tls13_hs_secrets->client_handshake_traffic_secret;
+        base_key_len = sizeof( tls13_hs_secrets->client_handshake_traffic_secret );
+    }
+    else
+    {
+        base_key = tls13_hs_secrets->server_handshake_traffic_secret;
+        base_key_len = sizeof( tls13_hs_secrets->server_handshake_traffic_secret );
+    }
+
     if( dst_len < md_size )
-        return( MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL );
+    {
+        ret = MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL;
+        goto exit;
+    }
 
     ret = mbedtls_ssl_get_handshake_transcript( ssl, md_type,
                                                 transcript, sizeof( transcript ),
@@ -676,11 +693,6 @@
     }
     MBEDTLS_SSL_DEBUG_BUF( 4, "handshake hash", transcript, transcript_len );
 
-    if( from == MBEDTLS_SSL_IS_CLIENT )
-        base_key = ssl->handshake->tls13_hs_secrets.client_handshake_traffic_secret;
-    else
-        base_key = ssl->handshake->tls13_hs_secrets.server_handshake_traffic_secret;
-
     ret = ssl_tls13_calc_finished_core( md_type, base_key, transcript, dst );
     if( ret != 0 )
         goto exit;
@@ -690,7 +702,8 @@
     MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= mbedtls_ssl_tls13_calculate_verify_data" ) );
 
 exit:
-
+    /* Erase handshake secrets */
+    mbedtls_platform_zeroize( base_key, base_key_len );
     mbedtls_platform_zeroize( transcript, sizeof( transcript ) );
     return( ret );
 }
@@ -1164,6 +1177,9 @@
                                    handshake->tls13_master_secrets.app,
                                    transcript, transcript_len,
                                    app_secrets );
+    /* Erase master secrets */
+    mbedtls_platform_zeroize( &ssl->handshake->tls13_master_secrets,
+                              sizeof( ssl->handshake->tls13_master_secrets ) );
     if( ret != 0 )
     {
         MBEDTLS_SSL_DEBUG_RET( 1,
@@ -1225,9 +1241,11 @@
     MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= derive application traffic keys" ) );
 
  cleanup:
-
+    /* randbytes is not used again */
+    mbedtls_platform_zeroize( ssl->handshake->randbytes,
+                              sizeof( ssl->handshake->randbytes ) );
     mbedtls_platform_zeroize( transcript, sizeof( transcript ) );
     return( ret );
 }
 
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
diff --git a/library/ssl_tls13_server.c b/library/ssl_tls13_server.c
index 3018ecb..faace4a 100644
--- a/library/ssl_tls13_server.c
+++ b/library/ssl_tls13_server.c
@@ -19,22 +19,25 @@
 
 #include "common.h"
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
 
 #if defined(MBEDTLS_SSL_SRV_C)
 
 #include "mbedtls/debug.h"
 
 #include "ssl_misc.h"
+#include "ssl_debug_helpers_generated.h"
 
 int mbedtls_ssl_tls13_handshake_server_step( mbedtls_ssl_context *ssl )
 {
     ((void) ssl);
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "tls13 server state: %d", ssl->state ) );
+    MBEDTLS_SSL_DEBUG_MSG( 2, ( "tls13 server state: %s(%d)",
+                                mbedtls_ssl_states_str( ssl->state ),
+                                ssl->state ) );
 
     return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE );
 }
 
 #endif /* MBEDTLS_SSL_SRV_C */
 
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
diff --git a/programs/aes/crypt_and_hash.c b/programs/aes/crypt_and_hash.c
index 5ed2ece..74ea88c 100644
--- a/programs/aes/crypt_and_hash.c
+++ b/programs/aes/crypt_and_hash.c
@@ -277,10 +277,27 @@
 
         p = argv[2];
 
-        mbedtls_md_starts( &md_ctx );
-        mbedtls_md_update( &md_ctx, buffer, 8 );
-        mbedtls_md_update( &md_ctx, (unsigned char *) p, strlen( p ) );
-        mbedtls_md_finish( &md_ctx, digest );
+        if( mbedtls_md_starts( &md_ctx ) != 0 )
+        {
+            mbedtls_fprintf( stderr, "mbedtls_md_starts() returned error\n" );
+            goto exit;
+        }
+        if( mbedtls_md_update( &md_ctx, buffer, 8 ) != 0 )
+        {
+            mbedtls_fprintf( stderr, "mbedtls_md_update() returned error\n" );
+            goto exit;
+        }
+        if( mbedtls_md_update( &md_ctx, ( unsigned char * ) p, strlen( p ) )
+            != 0 )
+        {
+            mbedtls_fprintf( stderr, "mbedtls_md_update() returned error\n" );
+            goto exit;
+        }
+        if( mbedtls_md_finish( &md_ctx, digest ) != 0 )
+        {
+            mbedtls_fprintf( stderr, "mbedtls_md_finish() returned error\n" );
+            goto exit;
+        }
 
         memcpy( IV, digest, 16 );
 
@@ -302,10 +319,30 @@
 
         for( i = 0; i < 8192; i++ )
         {
-            mbedtls_md_starts( &md_ctx );
-            mbedtls_md_update( &md_ctx, digest, 32 );
-            mbedtls_md_update( &md_ctx, key, keylen );
-            mbedtls_md_finish( &md_ctx, digest );
+            if( mbedtls_md_starts( &md_ctx ) != 0 )
+            {
+                mbedtls_fprintf( stderr,
+                                 "mbedtls_md_starts() returned error\n" );
+                goto exit;
+            }
+            if( mbedtls_md_update( &md_ctx, digest, 32 ) != 0 )
+            {
+                mbedtls_fprintf( stderr,
+                                 "mbedtls_md_update() returned error\n" );
+                goto exit;
+            }
+            if( mbedtls_md_update( &md_ctx, key, keylen ) != 0 )
+            {
+                mbedtls_fprintf( stderr,
+                                 "mbedtls_md_update() returned error\n" );
+                goto exit;
+            }
+            if( mbedtls_md_finish( &md_ctx, digest ) != 0 )
+            {
+                mbedtls_fprintf( stderr,
+                                 "mbedtls_md_finish() returned error\n" );
+                goto exit;
+            }
 
         }
 
@@ -328,7 +365,11 @@
             goto exit;
         }
 
-        mbedtls_md_hmac_starts( &md_ctx, digest, 32 );
+        if( mbedtls_md_hmac_starts( &md_ctx, digest, 32 ) != 0 )
+        {
+            mbedtls_fprintf( stderr, "mbedtls_md_hmac_starts() returned error\n" );
+            goto exit;
+        }
 
         /*
          * Encrypt and write the ciphertext.
@@ -350,7 +391,11 @@
                 goto exit;
             }
 
-            mbedtls_md_hmac_update( &md_ctx, output, olen );
+            if( mbedtls_md_hmac_update( &md_ctx, output, olen ) != 0 )
+            {
+                mbedtls_fprintf( stderr, "mbedtls_md_hmac_update() returned error\n" );
+                goto exit;
+            }
 
             if( fwrite( output, 1, olen, fout ) != olen )
             {
@@ -364,7 +409,11 @@
             mbedtls_fprintf( stderr, "mbedtls_cipher_finish() returned error\n" );
             goto exit;
         }
-        mbedtls_md_hmac_update( &md_ctx, output, olen );
+        if( mbedtls_md_hmac_update( &md_ctx, output, olen ) != 0 )
+        {
+            mbedtls_fprintf( stderr, "mbedtls_md_hmac_update() returned error\n" );
+            goto exit;
+        }
 
         if( fwrite( output, 1, olen, fout ) != olen )
         {
@@ -375,7 +424,11 @@
         /*
          * Finally write the HMAC.
          */
-        mbedtls_md_hmac_finish( &md_ctx, digest );
+        if( mbedtls_md_hmac_finish( &md_ctx, digest ) != 0 )
+        {
+            mbedtls_fprintf( stderr, "mbedtls_md_hmac_finish() returned error\n" );
+            goto exit;
+        }
 
         if( fwrite( digest, 1, mbedtls_md_get_size( md_info ), fout ) != mbedtls_md_get_size( md_info ) )
         {
@@ -444,10 +497,26 @@
 
         for( i = 0; i < 8192; i++ )
         {
-            mbedtls_md_starts( &md_ctx );
-            mbedtls_md_update( &md_ctx, digest, 32 );
-            mbedtls_md_update( &md_ctx, key, keylen );
-            mbedtls_md_finish( &md_ctx, digest );
+            if( mbedtls_md_starts( &md_ctx ) != 0 )
+            {
+                mbedtls_fprintf( stderr, "mbedtls_md_starts() returned error\n" );
+                goto exit;
+            }
+            if( mbedtls_md_update( &md_ctx, digest, 32 ) != 0 )
+            {
+                mbedtls_fprintf( stderr, "mbedtls_md_update() returned error\n" );
+                goto exit;
+            }
+            if( mbedtls_md_update( &md_ctx, key, keylen ) != 0 )
+            {
+                mbedtls_fprintf( stderr, "mbedtls_md_update() returned error\n" );
+                goto exit;
+            }
+            if( mbedtls_md_finish( &md_ctx, digest ) != 0 )
+            {
+                mbedtls_fprintf( stderr, "mbedtls_md_finish() returned error\n" );
+                goto exit;
+            }
         }
 
         if( mbedtls_cipher_setkey( &cipher_ctx,
@@ -471,7 +540,11 @@
             goto exit;
         }
 
-        mbedtls_md_hmac_starts( &md_ctx, digest, 32 );
+        if( mbedtls_md_hmac_starts( &md_ctx, digest, 32 ) != 0 )
+        {
+            mbedtls_fprintf( stderr, "mbedtls_md_hmac_starts() returned error\n" );
+            goto exit;
+        }
 
         /*
          * Decrypt and write the plaintext.
@@ -488,7 +561,11 @@
                 goto exit;
             }
 
-            mbedtls_md_hmac_update( &md_ctx, buffer, ilen );
+            if( mbedtls_md_hmac_update( &md_ctx, buffer, ilen ) != 0 )
+            {
+                mbedtls_fprintf( stderr, "mbedtls_md_hmac_update() returned error\n" );
+                goto exit;
+            }
             if( mbedtls_cipher_update( &cipher_ctx, buffer, ilen, output,
                                        &olen ) != 0 )
             {
@@ -506,7 +583,11 @@
         /*
          * Verify the message authentication code.
          */
-        mbedtls_md_hmac_finish( &md_ctx, digest );
+        if( mbedtls_md_hmac_finish( &md_ctx, digest ) != 0 )
+        {
+            mbedtls_fprintf( stderr, "mbedtls_md_hmac_finish() returned error\n" );
+            goto exit;
+        }
 
         if( fread( buffer, 1, mbedtls_md_get_size( md_info ), fin ) != mbedtls_md_get_size( md_info ) )
         {
@@ -529,7 +610,11 @@
         /*
          * Write the final block of data
          */
-        mbedtls_cipher_finish( &cipher_ctx, output, &olen );
+        if( mbedtls_cipher_finish( &cipher_ctx, output, &olen ) != 0 )
+        {
+            mbedtls_fprintf( stderr, "mbedtls_cipher_finish() returned error\n" );
+            goto exit;
+        }
 
         if( fwrite( output, 1, olen, fout ) != olen )
         {
diff --git a/programs/ssl/ssl_client2.c b/programs/ssl/ssl_client2.c
index 776d77d..57f7d8f 100644
--- a/programs/ssl/ssl_client2.c
+++ b/programs/ssl/ssl_client2.c
@@ -268,7 +268,7 @@
 #define USAGE_CURVES ""
 #endif
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL) && \
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3) && \
     defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
 #define USAGE_SIG_ALGS \
     "    sig_algs=a,b,c,d      default: \"default\" (library default)\n"  \
@@ -343,13 +343,13 @@
 #define USAGE_SERIALIZATION ""
 #endif
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
 #define USAGE_TLS1_3_KEY_EXCHANGE_MODES \
     "    tls13_kex_modes=%%s   default: all\n"     \
     "                          options: psk, psk_ephemeral, ephemeral, ephemeral_all, psk_all, all\n"
 #else
 #define USAGE_TLS1_3_KEY_EXCHANGE_MODES ""
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 
 /* USAGE is arbitrarily split to stay under the portable string literal
  * length limit: 4095 bytes in C99. */
@@ -413,11 +413,11 @@
     USAGE_DHMLEN                                            \
     "\n"
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
 #define TLS1_3_VERSION_OPTIONS  ", tls13"
-#else /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#else /* MBEDTLS_SSL_PROTO_TLS1_3 */
 #define TLS1_3_VERSION_OPTIONS  ""
-#endif /* !MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* !MBEDTLS_SSL_PROTO_TLS1_3 */
 
 #define USAGE4 \
     "    allow_sha1=%%d       default: 0\n"                                   \
@@ -471,9 +471,9 @@
     const char *ecjpake_pw;     /* the EC J-PAKE password                   */
     int ec_max_ops;             /* EC consecutive operations limit          */
     int force_ciphersuite[2];   /* protocol/ciphersuite to use, or all      */
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
     int tls13_kex_modes;        /* supported TLS 1.3 key exchange modes     */
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
     int renegotiation;          /* enable / disable renegotiation           */
     int allow_legacy;           /* allow legacy renegotiation               */
     int renegotiate;            /* attempt renegotiation?                   */
@@ -653,11 +653,10 @@
     mbedtls_net_context server_fd;
     io_ctx_t io_ctx;
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL) && \
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3) && \
     defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
     uint16_t sig_alg_list[SIG_ALG_LIST_SIZE];
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL &&
-          MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 && MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED */
 
     unsigned char buf[MAX_REQUEST_SIZE + 1];
 
@@ -840,9 +839,9 @@
     opt.ecjpake_pw          = DFL_ECJPAKE_PW;
     opt.ec_max_ops          = DFL_EC_MAX_OPS;
     opt.force_ciphersuite[0]= DFL_FORCE_CIPHER;
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
     opt.tls13_kex_modes     = DFL_TLS1_3_KEX_MODES;
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
     opt.renegotiation       = DFL_RENEGOTIATION;
     opt.allow_legacy        = DFL_ALLOW_LEGACY;
     opt.renegotiate         = DFL_RENEGOTIATE;
@@ -1093,12 +1092,11 @@
         }
         else if( strcmp( p, "curves" ) == 0 )
             opt.curves = q;
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL) && \
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3) && \
     defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
         else if( strcmp( p, "sig_algs" ) == 0 )
             opt.sig_algs = q;
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL &&
-          MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 && MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED */
         else if( strcmp( p, "etm" ) == 0 )
         {
             switch( atoi( q ) )
@@ -1108,7 +1106,7 @@
                 default: goto usage;
             }
         }
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
         else if( strcmp( p, "tls13_kex_modes" ) == 0 )
         {
             if( strcmp( q, "psk" ) == 0 )
@@ -1125,16 +1123,16 @@
                 opt.tls13_kex_modes = MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_ALL;
             else goto usage;
         }
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
         else if( strcmp( p, "min_version" ) == 0 )
         {
             if( strcmp( q, "tls12" ) == 0 ||
                      strcmp( q, "dtls12" ) == 0 )
                 opt.min_version = MBEDTLS_SSL_MINOR_VERSION_3;
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
             else if( strcmp( q, "tls13" ) == 0 )
                 opt.min_version = MBEDTLS_SSL_MINOR_VERSION_4;
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
             else
                 goto usage;
         }
@@ -1143,10 +1141,10 @@
             if( strcmp( q, "tls12" ) == 0 ||
                      strcmp( q, "dtls12" ) == 0 )
                 opt.max_version = MBEDTLS_SSL_MINOR_VERSION_3;
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
             else if( strcmp( q, "tls13" ) == 0 )
                 opt.max_version = MBEDTLS_SSL_MINOR_VERSION_4;
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
             else
                 goto usage;
         }
@@ -1172,13 +1170,13 @@
                 opt.max_version = MBEDTLS_SSL_MINOR_VERSION_3;
                 opt.transport = MBEDTLS_SSL_TRANSPORT_DATAGRAM;
             }
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
             else if( strcmp( q, "tls13" ) == 0 )
             {
                 opt.min_version = MBEDTLS_SSL_MINOR_VERSION_4;
                 opt.max_version = MBEDTLS_SSL_MINOR_VERSION_4;
             }
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
             else
                 goto usage;
         }
@@ -1504,7 +1502,7 @@
     }
 #endif /* MBEDTLS_ECP_C */
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL) && \
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3) && \
     defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
     if( opt.sig_algs != NULL )
     {
@@ -1565,8 +1563,7 @@
 
         sig_alg_list[i] = MBEDTLS_TLS1_3_SIG_NONE;
     }
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL &&
-          MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 && MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED */
 
 #if defined(MBEDTLS_SSL_ALPN)
     if( opt.alpn_string != NULL )
@@ -1866,9 +1863,9 @@
     if( opt.force_ciphersuite[0] != DFL_FORCE_CIPHER )
         mbedtls_ssl_conf_ciphersuites( &conf, opt.force_ciphersuite );
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
     mbedtls_ssl_conf_tls13_key_exchange_modes( &conf, opt.tls13_kex_modes );
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 
     if( opt.allow_legacy != DFL_ALLOW_LEGACY )
         mbedtls_ssl_conf_legacy_renegotiation( &conf, opt.allow_legacy );
@@ -1907,10 +1904,10 @@
     }
 #endif
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
     if( opt.sig_algs != NULL )
         mbedtls_ssl_conf_sig_algs( &conf, sig_alg_list );
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 
 #if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
diff --git a/programs/ssl/ssl_context_info.c b/programs/ssl/ssl_context_info.c
index 5ad9120..62c3cc5 100644
--- a/programs/ssl/ssl_context_info.c
+++ b/programs/ssl/ssl_context_info.c
@@ -20,6 +20,7 @@
 #define MBEDTLS_ALLOW_PRIVATE_ACCESS
 
 #include "mbedtls/build_info.h"
+#include "mbedtls/debug.h"
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -161,6 +162,7 @@
     }
 }
 
+MBEDTLS_PRINTF_ATTRIBUTE( 1, 2 )
 void printf_err( const char *str, ... )
 {
     va_list args;
@@ -219,7 +221,13 @@
                 error_exit();
             }
 
-            if( ( b64_file = fopen( argv[i], "r" ) ) == NULL )
+            if( NULL != b64_file )
+            {
+                printf_err( "Cannot specify more than one file with -f\n" );
+                error_exit( );
+            }
+
+            if( ( b64_file = fopen( argv[i], "r" )) == NULL )
             {
                 printf_err( "Cannot find file \"%s\"\n", argv[i] );
                 error_exit();
@@ -461,7 +469,8 @@
             }
             else if( len > *max_len )
             {
-                printf_err( "The code found is too large by %u bytes.\n", len - *max_len );
+                printf_err( "The code found is too large by %" MBEDTLS_PRINTF_SIZET " bytes.\n",
+                            len - *max_len );
                 len = pad = 0;
             }
             else if( len % 4 != 0 )
diff --git a/programs/ssl/ssl_server2.c b/programs/ssl/ssl_server2.c
index 5bad4a6..7cbdaf6 100644
--- a/programs/ssl/ssl_server2.c
+++ b/programs/ssl/ssl_server2.c
@@ -425,7 +425,7 @@
 #define USAGE_CURVES ""
 #endif
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL) && \
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3) && \
     defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
 #define USAGE_SIG_ALGS \
     "    sig_algs=a,b,c,d      default: \"default\" (library default)\n"  \
@@ -448,13 +448,13 @@
 #define USAGE_SERIALIZATION ""
 #endif
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
 #define USAGE_TLS1_3_KEY_EXCHANGE_MODES \
     "    tls13_kex_modes=%%s   default: all\n"     \
     "                          options: psk, psk_ephemeral, ephemeral, ephemeral_all, psk_all, all\n"
 #else
 #define USAGE_TLS1_3_KEY_EXCHANGE_MODES ""
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 
 
 /* USAGE is arbitrarily split to stay under the portable string literal
@@ -513,11 +513,11 @@
     USAGE_SIG_ALGS                                          \
     "\n"
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
 #define TLS1_3_VERSION_OPTIONS  ", tls13"
-#else /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#else /* MBEDTLS_SSL_PROTO_TLS1_3 */
 #define TLS1_3_VERSION_OPTIONS  ""
-#endif /* !MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* !MBEDTLS_SSL_PROTO_TLS1_3 */
 
 #define USAGE4 \
     USAGE_SSL_ASYNC                                         \
@@ -594,9 +594,9 @@
     char *psk_list;             /* list of PSK id/key pairs for callback    */
     const char *ecjpake_pw;     /* the EC J-PAKE password                   */
     int force_ciphersuite[2];   /* protocol/ciphersuite to use, or all      */
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
     int tls13_kex_modes;        /* supported TLS 1.3 key exchange modes     */
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
     int renegotiation;          /* enable / disable renegotiation           */
     int allow_legacy;           /* allow legacy renegotiation               */
     int renegotiate;            /* attempt renegotiation?                   */
@@ -1364,11 +1364,10 @@
     size_t context_buf_len = 0;
 #endif
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL) && \
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3) && \
     defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
     uint16_t sig_alg_list[SIG_ALG_LIST_SIZE];
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL &&
-          MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 && MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED */
 
     int i;
     char *p, *q;
@@ -1521,9 +1520,9 @@
     opt.psk_list            = DFL_PSK_LIST;
     opt.ecjpake_pw          = DFL_ECJPAKE_PW;
     opt.force_ciphersuite[0]= DFL_FORCE_CIPHER;
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
     opt.tls13_kex_modes     = DFL_TLS1_3_KEX_MODES;
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
     opt.renegotiation       = DFL_RENEGOTIATION;
     opt.allow_legacy        = DFL_ALLOW_LEGACY;
     opt.renegotiate         = DFL_RENEGOTIATE;
@@ -1716,12 +1715,11 @@
         }
         else if( strcmp( p, "curves" ) == 0 )
             opt.curves = q;
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL) && \
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3) && \
     defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
         else if( strcmp( p, "sig_algs" ) == 0 )
             opt.sig_algs = q;
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL && && \
-          MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 && MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED */
         else if( strcmp( p, "renegotiation" ) == 0 )
         {
             opt.renegotiation = (atoi( q )) ?
@@ -1771,7 +1769,7 @@
             if( opt.exchanges < 0 )
                 goto usage;
         }
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
         else if( strcmp( p, "tls13_kex_modes" ) == 0 )
         {
             if( strcmp( q, "psk" ) == 0 )
@@ -1788,17 +1786,17 @@
                 opt.tls13_kex_modes = MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_ALL;
             else goto usage;
         }
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 
         else if( strcmp( p, "min_version" ) == 0 )
         {
             if( strcmp( q, "tls12" ) == 0 ||
                      strcmp( q, "dtls12" ) == 0 )
                 opt.min_version = MBEDTLS_SSL_MINOR_VERSION_3;
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
             else if( strcmp( q, "tls13" ) == 0 )
                 opt.min_version = MBEDTLS_SSL_MINOR_VERSION_4;
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
             else
                 goto usage;
         }
@@ -1807,10 +1805,10 @@
             if( strcmp( q, "tls12" ) == 0 ||
                      strcmp( q, "dtls12" ) == 0 )
                 opt.max_version = MBEDTLS_SSL_MINOR_VERSION_3;
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
             else if( strcmp( q, "tls13" ) == 0 )
                 opt.max_version = MBEDTLS_SSL_MINOR_VERSION_4;
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
             else
                 goto usage;
         }
@@ -1836,13 +1834,13 @@
                 opt.max_version = MBEDTLS_SSL_MINOR_VERSION_3;
                 opt.transport = MBEDTLS_SSL_TRANSPORT_DATAGRAM;
             }
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
             else if( strcmp( q, "tls13" ) == 0 )
             {
                 opt.min_version = MBEDTLS_SSL_MINOR_VERSION_4;
                 opt.max_version = MBEDTLS_SSL_MINOR_VERSION_4;
             }
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
             else
                 goto usage;
         }
@@ -2248,7 +2246,7 @@
     }
 #endif /* MBEDTLS_ECP_C */
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL) && \
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3) && \
     defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
     if( opt.sig_algs != NULL )
     {
@@ -2299,8 +2297,7 @@
 
         sig_alg_list[i] = MBEDTLS_TLS1_3_SIG_NONE;
     }
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL &&
-          MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 && MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED */
 
 #if defined(MBEDTLS_SSL_ALPN)
     if( opt.alpn_string != NULL )
@@ -2767,9 +2764,9 @@
     if( opt.force_ciphersuite[0] != DFL_FORCE_CIPHER )
         mbedtls_ssl_conf_ciphersuites( &conf, opt.force_ciphersuite );
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
     mbedtls_ssl_conf_tls13_key_exchange_modes( &conf, opt.tls13_kex_modes );
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 
     if( opt.allow_legacy != DFL_ALLOW_LEGACY )
         mbedtls_ssl_conf_legacy_renegotiation( &conf, opt.allow_legacy );
@@ -2911,10 +2908,10 @@
     }
 #endif
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
     if( opt.sig_algs != NULL )
         mbedtls_ssl_conf_sig_algs( &conf, sig_alg_list );
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 
 #if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
 
diff --git a/programs/test/query_compile_time_config.c b/programs/test/query_compile_time_config.c
index a6eaf61..6d92de3 100644
--- a/programs/test/query_compile_time_config.c
+++ b/programs/test/query_compile_time_config.c
@@ -29,13 +29,14 @@
 #endif
 
 #define USAGE                                                                \
-    "usage: %s <MBEDTLS_CONFIG>\n\n"                                         \
+    "usage: %s [ <MBEDTLS_CONFIG> | -l ]\n\n"                                \
     "This program takes one command line argument which corresponds to\n"    \
     "the string representation of a Mbed TLS compile time configuration.\n"  \
     "The value 0 will be returned if this configuration is defined in the\n" \
     "Mbed TLS build and the macro expansion of that configuration will be\n" \
-    "printed (if any). Otherwise, 1 will be returned.\n"
-
+    "printed (if any). Otherwise, 1 will be returned.\n"                     \
+    "-l\tPrint all available configuration.\n"
+#include <string.h>
 #include "query_config.h"
 
 int main( int argc, char *argv[] )
@@ -46,5 +47,11 @@
         return( MBEDTLS_EXIT_FAILURE );
     }
 
+    if( strcmp( argv[1], "-l" ) == 0 )
+    {
+        list_config();
+        return( 0 );
+    }
+
     return( query_config( argv[1] ) );
 }
diff --git a/programs/test/query_config.h b/programs/test/query_config.h
index 0fad886..290100f 100644
--- a/programs/test/query_config.h
+++ b/programs/test/query_config.h
@@ -35,4 +35,12 @@
  */
 int query_config( const char *config );
 
+/** List all enabled configuration symbols
+ *
+ * \note            This function is defined in `programs/test/query_config.c`
+ *                  which is automatically generated by
+ *                  `scripts/generate_query_config.pl`.
+ */
+void list_config( void );
+
 #endif /* MBEDTLS_PROGRAMS_TEST_QUERY_CONFIG_H */
diff --git a/scripts/data_files/query_config.fmt b/scripts/data_files/query_config.fmt
index ffa816e..8b0057c 100644
--- a/scripts/data_files/query_config.fmt
+++ b/scripts/data_files/query_config.fmt
@@ -99,6 +99,10 @@
 #define MACRO_NAME_TO_STR(macro)                                        \
     mbedtls_printf( "%s", strlen( #macro "" ) > 0 ? #macro "\n" : "" )
 
+#define STRINGIFY(macro)  #macro
+#define OUTPUT_MACRO_NAME_VALUE(macro) mbedtls_printf( #macro "%s\n",   \
+    ( STRINGIFY(macro) "" )[0] != 0 ? "=" STRINGIFY(macro) : "" )
+
 #if defined(_MSC_VER)
 /*
  * Visual Studio throws the warning 4003 because many Mbed TLS feature macros
@@ -118,6 +122,10 @@
     return( 1 );
 }
 
+void list_config( void )
+{
+    LIST_CONFIG
+}
 #if defined(_MSC_VER)
 #pragma warning(pop)
 #endif /* _MSC_VER */
diff --git a/scripts/generate_query_config.pl b/scripts/generate_query_config.pl
index 7855c7c..b2ce8fc 100755
--- a/scripts/generate_query_config.pl
+++ b/scripts/generate_query_config.pl
@@ -68,6 +68,7 @@
 # This variable will contain the string to replace in the CHECK_CONFIG of the
 # format file
 my $config_check = "";
+my $list_config = "";
 
 while (my $line = <CONFIG_FILE>) {
     if ($line =~ /^(\/\/)?\s*#\s*define\s+(MBEDTLS_\w+).*/) {
@@ -84,6 +85,11 @@
         $config_check .= "    }\n";
         $config_check .= "#endif /* $name */\n";
         $config_check .= "\n";
+
+        $list_config .= "#if defined($name)\n";
+        $list_config .= "    OUTPUT_MACRO_NAME_VALUE($name);\n";
+        $list_config .= "#endif /* $name */\n";
+        $list_config .= "\n";
     }
 }
 
@@ -95,6 +101,7 @@
 
 # Replace the body of the query_config() function with the code we just wrote
 $query_config_format =~ s/CHECK_CONFIG/$config_check/g;
+$query_config_format =~ s/LIST_CONFIG/$list_config/g;
 
 # Rewrite the query_config.c file
 open(QUERY_CONFIG_FILE, ">$query_config_file") or die "Opening destination file '$query_config_file': $!";
diff --git a/scripts/generate_ssl_debug_helpers.py b/scripts/generate_ssl_debug_helpers.py
new file mode 100755
index 0000000..19fac65
--- /dev/null
+++ b/scripts/generate_ssl_debug_helpers.py
@@ -0,0 +1,335 @@
+#!/usr/bin/env python3
+
+"""Generate library/ssl_debug_helps_generated.c
+
+The code generated by this module includes debug helper functions that can not be
+implemented by fixed codes.
+
+"""
+
+# Copyright The Mbed TLS Contributors
+# SPDX-License-Identifier: Apache-2.0
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+import sys
+import re
+import os
+import textwrap
+import argparse
+from mbedtls_dev import build_tree
+
+
+def remove_c_comments(string):
+    """
+        Remove C style comments from input string
+    """
+    string_pattern = r"(?P<string>\".*?\"|\'.*?\')"
+    comment_pattern = r"(?P<comment>/\*.*?\*/|//[^\r\n]*$)"
+    pattern = re.compile(string_pattern + r'|' + comment_pattern,
+                         re.MULTILINE | re.DOTALL)
+
+    def replacer(match):
+        if match.lastgroup == 'comment':
+            return ""
+        return match.group()
+    return pattern.sub(replacer, string)
+
+
+class CondDirectiveNotMatch(Exception):
+    pass
+
+
+def preprocess_c_source_code(source, *classes):
+    """
+        Simple preprocessor for C source code.
+
+        Only processses condition directives without expanding them.
+        Yield object according to the classes input. Most match firstly
+
+        If the directive pair does not match , raise CondDirectiveNotMatch.
+
+        Assume source code does not include comments and compile pass.
+
+    """
+
+    pattern = re.compile(r"^[ \t]*#[ \t]*" +
+                         r"(?P<directive>(if[ \t]|ifndef[ \t]|ifdef[ \t]|else|endif))" +
+                         r"[ \t]*(?P<param>(.*\\\n)*.*$)",
+                         re.MULTILINE)
+    stack = []
+
+    def _yield_objects(s, d, p, st, end):
+        """
+            Output matched source piece
+        """
+        nonlocal stack
+        start_line, end_line = '', ''
+        if stack:
+            start_line = '#{} {}'.format(d, p)
+            if d == 'if':
+                end_line = '#endif /* {} */'.format(p)
+            elif d == 'ifdef':
+                end_line = '#endif /* defined({}) */'.format(p)
+            else:
+                end_line = '#endif /* !defined({}) */'.format(p)
+        has_instance = False
+        for cls in classes:
+            for instance in cls.extract(s, st, end):
+                if has_instance is False:
+                    has_instance = True
+                    yield pair_start, start_line
+                yield instance.span()[0], instance
+        if has_instance:
+            yield start, end_line
+
+    for match in pattern.finditer(source):
+
+        directive = match.groupdict()['directive'].strip()
+        param = match.groupdict()['param']
+        start, end = match.span()
+
+        if directive in ('if', 'ifndef', 'ifdef'):
+            stack.append((directive, param, start, end))
+            continue
+
+        if not stack:
+            raise CondDirectiveNotMatch()
+
+        pair_directive, pair_param, pair_start, pair_end = stack.pop()
+        yield from _yield_objects(source,
+                                  pair_directive,
+                                  pair_param,
+                                  pair_end,
+                                  start)
+
+        if directive == 'endif':
+            continue
+
+        if pair_directive == 'if':
+            directive = 'if'
+            param = "!( {} )".format(pair_param)
+        elif pair_directive == 'ifdef':
+            directive = 'ifndef'
+            param = pair_param
+        else:
+            directive = 'ifdef'
+            param = pair_param
+
+        stack.append((directive, param, start, end))
+    assert not stack, len(stack)
+
+
+class EnumDefinition:
+    """
+        Generate helper functions around enumeration.
+
+        Currently, it generate translation function from enum value to string.
+        Enum definition looks like:
+        [typedef] enum [prefix name] { [body] } [suffix name];
+
+        Known limitation:
+        - the '}' and ';' SHOULD NOT exist in different macro blocks. Like
+        ```
+        enum test {
+            ....
+        #if defined(A)
+            ....
+        };
+        #else
+            ....
+        };
+        #endif
+        ```
+    """
+
+    @classmethod
+    def extract(cls, source_code, start=0, end=-1):
+        enum_pattern = re.compile(r'enum\s*(?P<prefix_name>\w*)\s*' +
+                                  r'{\s*(?P<body>[^}]*)}' +
+                                  r'\s*(?P<suffix_name>\w*)\s*;',
+                                  re.MULTILINE | re.DOTALL)
+
+        for match in enum_pattern.finditer(source_code, start, end):
+            yield EnumDefinition(source_code,
+                                 span=match.span(),
+                                 group=match.groupdict())
+
+    def __init__(self, source_code, span=None, group=None):
+        assert isinstance(group, dict)
+        prefix_name = group.get('prefix_name', None)
+        suffix_name = group.get('suffix_name', None)
+        body = group.get('body', None)
+        assert prefix_name or suffix_name
+        assert body
+        assert span
+        # If suffix_name exists, it is a typedef
+        self._prototype = suffix_name if suffix_name else 'enum ' + prefix_name
+        self._name = suffix_name if suffix_name else prefix_name
+        self._body = body
+        self._source = source_code
+        self._span = span
+
+    def __repr__(self):
+        return 'Enum({},{})'.format(self._name, self._span)
+
+    def __str__(self):
+        return repr(self)
+
+    def span(self):
+        return self._span
+
+    def generate_tranlation_function(self):
+        """
+            Generate function for translating value to string
+        """
+        translation_table = []
+
+        for line in self._body.splitlines():
+
+            if line.strip().startswith('#'):
+                # Preprocess directive, keep it in table
+                translation_table.append(line.strip())
+                continue
+
+            if not line.strip():
+                continue
+
+            for field in line.strip().split(','):
+                if not field.strip():
+                    continue
+                member = field.strip().split()[0]
+                translation_table.append(
+                    '{space}[{member}] = "{member}",'.format(member=member,
+                                                             space=' '*8)
+                )
+
+        body = textwrap.dedent('''\
+            const char *{name}_str( {prototype} in )
+            {{
+                const char * in_to_str[]=
+                {{
+            {translation_table}
+                }};
+
+                if( in > ( sizeof( in_to_str )/sizeof( in_to_str[0]) - 1 ) ||
+                    in_to_str[ in ] == NULL )
+                {{
+                    return "UNKOWN_VAULE";
+                }}
+                return in_to_str[ in ];
+            }}
+                    ''')
+        body = body.format(translation_table='\n'.join(translation_table),
+                           name=self._name,
+                           prototype=self._prototype)
+        prototype = 'const char *{name}_str( {prototype} in );\n'
+        prototype = prototype.format(name=self._name,
+                                     prototype=self._prototype)
+        return body, prototype
+
+
+OUTPUT_C_TEMPLATE = '''\
+/* Automatically generated by generate_ssl_debug_helpers.py. DO NOT EDIT. */
+
+#include "common.h"
+
+#if defined(MBEDTLS_DEBUG_C)
+
+#include "ssl_debug_helpers_generated.h"
+
+{functions}
+
+#endif /* MBEDTLS_DEBUG_C */
+/* End of automatically generated file. */
+
+'''
+
+OUTPUT_H_TEMPLATE = '''\
+/* Automatically generated by generate_ssl_debug_helpers.py. DO NOT EDIT. */
+#ifndef MBEDTLS_SSL_DEBUG_HELPERS_H
+#define MBEDTLS_SSL_DEBUG_HELPERS_H
+
+#include "common.h"
+
+#if defined(MBEDTLS_DEBUG_C)
+
+#include "mbedtls/ssl.h"
+#include "ssl_misc.h"
+
+{functions}
+
+#endif /* MBEDTLS_DEBUG_C */
+
+#endif /* SSL_DEBUG_HELPERS_H */
+
+/* End of automatically generated file. */
+
+'''
+
+
+def generate_ssl_debug_helpers(output_directory, mbedtls_root):
+    """
+        Generate functions of debug helps
+    """
+    mbedtls_root = os.path.abspath(mbedtls_root or build_tree.guess_mbedtls_root())
+    with open(os.path.join(mbedtls_root, 'include/mbedtls/ssl.h')) as f:
+        source_code = remove_c_comments(f.read())
+
+    definitions = dict()
+    prototypes = dict()
+    for start, instance in preprocess_c_source_code(source_code, EnumDefinition):
+        if start in definitions:
+            continue
+        if isinstance(instance, EnumDefinition):
+            definition, prototype = instance.generate_tranlation_function()
+        else:
+            definition = instance
+            prototype = instance
+        definitions[start] = definition
+        prototypes[start] = prototype
+
+    function_definitions = [str(v) for _, v in sorted(definitions.items())]
+    function_prototypes = [str(v) for _, v in sorted(prototypes.items())]
+    if output_directory == sys.stdout:
+        sys.stdout.write(OUTPUT_H_TEMPLATE.format(
+            functions='\n'.join(function_prototypes)))
+        sys.stdout.write(OUTPUT_C_TEMPLATE.format(
+            functions='\n'.join(function_definitions)))
+    else:
+        with open(os.path.join(output_directory, 'ssl_debug_helpers_generated.c'), 'w') as f:
+            f.write(OUTPUT_C_TEMPLATE.format(
+                functions='\n'.join(function_definitions)))
+
+        with open(os.path.join(output_directory, 'ssl_debug_helpers_generated.h'), 'w') as f:
+            f.write(OUTPUT_H_TEMPLATE.format(
+                functions='\n'.join(function_prototypes)))
+
+
+def main():
+    """
+    Command line entry
+    """
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--mbedtls-root', nargs='?', default=None,
+                        help='root directory of mbedtls source code')
+    parser.add_argument('output_directory', nargs='?',
+                        default='library', help='source/header files location')
+
+    args = parser.parse_args()
+
+    generate_ssl_debug_helpers(args.output_directory, args.mbedtls_root)
+    return 0
+
+
+if __name__ == '__main__':
+    sys.exit(main())
diff --git a/scripts/make_generated_files.bat b/scripts/make_generated_files.bat
index e4465d8..d3a8b36 100644
--- a/scripts/make_generated_files.bat
+++ b/scripts/make_generated_files.bat
@@ -4,6 +4,7 @@
 perl scripts\generate_errors.pl || exit /b 1
 perl scripts\generate_query_config.pl || exit /b 1
 perl scripts\generate_features.pl || exit /b 1
+python scripts\generate_ssl_debug_helpers.py || exit /b 1
 perl scripts\generate_visualc_files.pl || exit /b 1
 python scripts\generate_psa_constants.py || exit /b 1
 python tests\scripts\generate_psa_tests.py || exit /b 1
diff --git a/scripts/mbedtls_dev/build_tree.py b/scripts/mbedtls_dev/build_tree.py
index 7724104..3920d0e 100644
--- a/scripts/mbedtls_dev/build_tree.py
+++ b/scripts/mbedtls_dev/build_tree.py
@@ -17,12 +17,15 @@
 # limitations under the License.
 
 import os
+import inspect
+
 
 def looks_like_mbedtls_root(path: str) -> bool:
     """Whether the given directory looks like the root of the Mbed TLS source tree."""
     return all(os.path.isdir(os.path.join(path, subdir))
                for subdir in ['include', 'library', 'programs', 'tests'])
 
+
 def chdir_to_root() -> None:
     """Detect the root of the Mbed TLS source tree and change to it.
 
@@ -36,3 +39,22 @@
             os.chdir(d)
             return
     raise Exception('Mbed TLS source tree not found')
+
+
+def guess_mbedtls_root():
+    """Guess mbedTLS source code directory.
+
+    Return the first possible mbedTLS root directory
+    """
+    dirs = set({})
+    for frame in inspect.stack():
+        path = os.path.dirname(frame.filename)
+        for d in ['.', os.path.pardir] \
+                 + [os.path.join(*([os.path.pardir]*i)) for i in range(2, 10)]:
+            d = os.path.abspath(os.path.join(path, d))
+            if d in dirs:
+                continue
+            dirs.add(d)
+            if looks_like_mbedtls_root(d):
+                return d
+    raise Exception('Mbed TLS source tree not found')
diff --git a/tests/data_files/Makefile b/tests/data_files/Makefile
index 0af27fe..c0ad9b0 100644
--- a/tests/data_files/Makefile
+++ b/tests/data_files/Makefile
@@ -1089,7 +1089,7 @@
 
 # TLSv1.3 test certificates
 ecdsa_secp256r1.key: ec_256_prv.pem
-	ln -s $< $@
+	cp $< $@
 
 ecdsa_secp256r1.csr: ecdsa_secp256r1.key
 	$(OPENSSL) req -new -subj "/C=NL/O=PolarSSL/CN=localhost" \
@@ -1102,7 +1102,7 @@
 tls13_certs: ecdsa_secp256r1.crt ecdsa_secp256r1.key
 
 ecdsa_secp384r1.key: ec_384_prv.pem
-	ln -s $< $@
+	cp $< $@
 ecdsa_secp384r1.csr: ecdsa_secp384r1.key
 	$(OPENSSL) req -new -subj "/C=NL/O=PolarSSL/CN=localhost" \
 					-key $< -out $@
@@ -1114,7 +1114,7 @@
 tls13_certs: ecdsa_secp384r1.crt ecdsa_secp384r1.key
 
 ecdsa_secp521r1.key: ec_521_prv.pem
-	ln -s $< $@
+	cp $< $@
 ecdsa_secp521r1.csr: ecdsa_secp521r1.key
 	$(OPENSSL) req -new -subj "/C=NL/O=PolarSSL/CN=localhost" \
 					-key $< -out $@
diff --git a/tests/data_files/ecdsa_secp256r1.key b/tests/data_files/ecdsa_secp256r1.key
deleted file mode 120000
index fc01ea3..0000000
--- a/tests/data_files/ecdsa_secp256r1.key
+++ /dev/null
@@ -1 +0,0 @@
-ec_256_prv.pem
\ No newline at end of file
diff --git a/tests/data_files/ecdsa_secp256r1.key b/tests/data_files/ecdsa_secp256r1.key
new file mode 100644
index 0000000..e42dd4a
--- /dev/null
+++ b/tests/data_files/ecdsa_secp256r1.key
@@ -0,0 +1,5 @@
+-----BEGIN EC PRIVATE KEY-----
+MHcCAQEEIEnJqMGMS4hWOMQxzx3xyZQTFgm1gNT9Q6DKsX2y8T7uoAoGCCqGSM49
+AwEHoUQDQgAEd3Jlb4FLOZJ51eHxeB+sbwmaPFyhsONTUYNLCLZeC1clkM2vj3aT
+YbzzSs/BHl4HToQmvd4Evm5lOUVElhfeRQ==
+-----END EC PRIVATE KEY-----
diff --git a/tests/data_files/ecdsa_secp384r1.key b/tests/data_files/ecdsa_secp384r1.key
deleted file mode 120000
index ff72d53..0000000
--- a/tests/data_files/ecdsa_secp384r1.key
+++ /dev/null
@@ -1 +0,0 @@
-ec_384_prv.pem
\ No newline at end of file
diff --git a/tests/data_files/ecdsa_secp384r1.key b/tests/data_files/ecdsa_secp384r1.key
new file mode 100644
index 0000000..7890759
--- /dev/null
+++ b/tests/data_files/ecdsa_secp384r1.key
@@ -0,0 +1,6 @@
+-----BEGIN EC PRIVATE KEY-----
+MIGkAgEBBDA/XY2b4oC1aWzFzJ+Uz4r35rYd1lkrKrKzpMYHRQQX7DJ9zcrtfBAF
+PXGaBXTwp2qgBwYFK4EEACKhZANiAATZxmK1C6KcpHmQRQ4EOur08MabFWdtES9i
+KnHJMFmvmZaRxWgNK0TREVedsS9KQTou1cRfz7Z7W2PgC5Hr5Z0JprGsLAxCgqoS
+MX7VkU+Zm8SIuxMug0LMNvLKXjN5x0c=
+-----END EC PRIVATE KEY-----
diff --git a/tests/data_files/ecdsa_secp521r1.key b/tests/data_files/ecdsa_secp521r1.key
deleted file mode 120000
index b047f03..0000000
--- a/tests/data_files/ecdsa_secp521r1.key
+++ /dev/null
@@ -1 +0,0 @@
-ec_521_prv.pem
\ No newline at end of file
diff --git a/tests/data_files/ecdsa_secp521r1.key b/tests/data_files/ecdsa_secp521r1.key
new file mode 100644
index 0000000..144bb44
--- /dev/null
+++ b/tests/data_files/ecdsa_secp521r1.key
@@ -0,0 +1,7 @@
+-----BEGIN EC PRIVATE KEY-----
+MIHcAgEBBEIBsbatB7t55zINpZhg6ijgVShPYFjyed5mbgbUNdKve9oo2Z+ke33Q
+lj4WsAcweO6LijjZZqWC9G0Z/5XfOtloWq6gBwYFK4EEACOhgYkDgYYABAAd4ULV
+T2nrA47kt6+dPKB3Nv2c9xnrNU1ph57n88E2+w+/nwj4a+X6Eo7BoFHT5sZD6Fra
+j/rPNmPCYL0shEtvVgDO6OSKnmXQnK3YnyNd7gXzuKZGvnFfH2fVtDTg/yOh/Afv
+d0AZPkDu/287zf12WqkVUDNST+TyBfVETiksTC9qwQ==
+-----END EC PRIVATE KEY-----
diff --git a/tests/opt-testcases/tls13-compat.sh b/tests/opt-testcases/tls13-compat.sh
index 7b75808..ed60686 100755
--- a/tests/opt-testcases/tls13-compat.sh
+++ b/tests/opt-testcases/tls13-compat.sh
@@ -28,10 +28,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_GCM_SHA256,secp256r1,ecdsa_secp256r1_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups P-256 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups P-256 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=secp256r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -45,10 +46,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_GCM_SHA256,secp256r1,ecdsa_secp256r1_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-SECP256R1:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-SECP256R1:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=secp256r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -60,10 +62,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_GCM_SHA256,secp384r1,ecdsa_secp256r1_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups P-384 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups P-384 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=secp384r1,secp256r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -77,10 +80,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_GCM_SHA256,secp384r1,ecdsa_secp256r1_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-SECP384R1:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-SECP384R1:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=secp384r1,secp256r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -92,10 +96,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_GCM_SHA256,secp521r1,ecdsa_secp256r1_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups P-521 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups P-521 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=secp521r1,secp256r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -109,10 +114,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_GCM_SHA256,secp521r1,ecdsa_secp256r1_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-SECP521R1:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-SECP521R1:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=secp521r1,secp256r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -124,10 +130,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_GCM_SHA256,x25519,ecdsa_secp256r1_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups X25519 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups X25519 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=x25519,secp256r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -141,10 +148,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_GCM_SHA256,x25519,ecdsa_secp256r1_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-X25519:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-X25519:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=x25519,secp256r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -156,10 +164,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_GCM_SHA256,x448,ecdsa_secp256r1_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups X448 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups X448 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=x448,secp256r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -173,10 +182,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_GCM_SHA256,x448,ecdsa_secp256r1_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-X448:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-X448:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=x448,secp256r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -188,10 +198,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_GCM_SHA256,secp256r1,ecdsa_secp384r1_sha384" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups P-256 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups P-256 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=secp256r1,secp384r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -205,10 +216,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_GCM_SHA256,secp256r1,ecdsa_secp384r1_sha384" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-SECP256R1:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-SECP256R1:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=secp256r1,secp384r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -220,10 +232,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_GCM_SHA256,secp384r1,ecdsa_secp384r1_sha384" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups P-384 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups P-384 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=secp384r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -237,10 +250,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_GCM_SHA256,secp384r1,ecdsa_secp384r1_sha384" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-SECP384R1:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-SECP384R1:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=secp384r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -252,10 +266,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_GCM_SHA256,secp521r1,ecdsa_secp384r1_sha384" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups P-521 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups P-521 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=secp521r1,secp384r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -269,10 +284,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_GCM_SHA256,secp521r1,ecdsa_secp384r1_sha384" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-SECP521R1:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-SECP521R1:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=secp521r1,secp384r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -284,10 +300,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_GCM_SHA256,x25519,ecdsa_secp384r1_sha384" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups X25519 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups X25519 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=x25519,secp384r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -301,10 +318,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_GCM_SHA256,x25519,ecdsa_secp384r1_sha384" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-X25519:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-X25519:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=x25519,secp384r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -316,10 +334,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_GCM_SHA256,x448,ecdsa_secp384r1_sha384" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups X448 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups X448 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=x448,secp384r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -333,10 +352,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_GCM_SHA256,x448,ecdsa_secp384r1_sha384" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-X448:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-X448:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=x448,secp384r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -348,10 +368,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_GCM_SHA256,secp256r1,ecdsa_secp521r1_sha512" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups P-256 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups P-256 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=secp256r1,secp521r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -365,10 +386,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_GCM_SHA256,secp256r1,ecdsa_secp521r1_sha512" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-SECP256R1:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-SECP256R1:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=secp256r1,secp521r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -380,10 +402,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_GCM_SHA256,secp384r1,ecdsa_secp521r1_sha512" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups P-384 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups P-384 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=secp384r1,secp521r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -397,10 +420,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_GCM_SHA256,secp384r1,ecdsa_secp521r1_sha512" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-SECP384R1:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-SECP384R1:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=secp384r1,secp521r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -412,10 +436,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_GCM_SHA256,secp521r1,ecdsa_secp521r1_sha512" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups P-521 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups P-521 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=secp521r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -429,10 +454,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_GCM_SHA256,secp521r1,ecdsa_secp521r1_sha512" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-SECP521R1:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-SECP521R1:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=secp521r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -444,10 +470,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_GCM_SHA256,x25519,ecdsa_secp521r1_sha512" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups X25519 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups X25519 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=x25519,secp521r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -461,10 +488,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_GCM_SHA256,x25519,ecdsa_secp521r1_sha512" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-X25519:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-X25519:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=x25519,secp521r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -476,10 +504,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_GCM_SHA256,x448,ecdsa_secp521r1_sha512" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups X448 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups X448 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=x448,secp521r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -493,10 +522,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_GCM_SHA256,x448,ecdsa_secp521r1_sha512" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-X448:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-X448:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=x448,secp521r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -508,11 +538,12 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->O: TLS_AES_128_GCM_SHA256,secp256r1,rsa_pss_rsae_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups P-256 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups P-256 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=secp256r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -526,11 +557,12 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->G: TLS_AES_128_GCM_SHA256,secp256r1,rsa_pss_rsae_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-SECP256R1:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-SECP256R1:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=secp256r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -542,11 +574,12 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->O: TLS_AES_128_GCM_SHA256,secp384r1,rsa_pss_rsae_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups P-384 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups P-384 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=secp384r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -560,11 +593,12 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->G: TLS_AES_128_GCM_SHA256,secp384r1,rsa_pss_rsae_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-SECP384R1:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-SECP384R1:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=secp384r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -576,11 +610,12 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->O: TLS_AES_128_GCM_SHA256,secp521r1,rsa_pss_rsae_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups P-521 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups P-521 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=secp521r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -594,11 +629,12 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->G: TLS_AES_128_GCM_SHA256,secp521r1,rsa_pss_rsae_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-SECP521R1:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-SECP521R1:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=secp521r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -610,11 +646,12 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->O: TLS_AES_128_GCM_SHA256,x25519,rsa_pss_rsae_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups X25519 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups X25519 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=x25519" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -628,11 +665,12 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->G: TLS_AES_128_GCM_SHA256,x25519,rsa_pss_rsae_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-X25519:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-X25519:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=x25519" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -644,11 +682,12 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->O: TLS_AES_128_GCM_SHA256,x448,rsa_pss_rsae_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups X448 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_128_GCM_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups X448 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=x448" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -662,11 +701,12 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->G: TLS_AES_128_GCM_SHA256,x448,rsa_pss_rsae_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-X448:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-128-GCM:+GROUP-X448:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-128-GCM-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=x448" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -678,10 +718,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_256_GCM_SHA384,secp256r1,ecdsa_secp256r1_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs ecdsa_secp256r1_sha256 -groups P-256 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs ecdsa_secp256r1_sha256 -groups P-256 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=ecdsa_secp256r1_sha256 curves=secp256r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -695,10 +736,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_256_GCM_SHA384,secp256r1,ecdsa_secp256r1_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-SECP256R1:+SHA384:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-SECP256R1:+SHA384:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=ecdsa_secp256r1_sha256 curves=secp256r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -710,10 +752,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_256_GCM_SHA384,secp384r1,ecdsa_secp256r1_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs ecdsa_secp256r1_sha256 -groups P-384 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs ecdsa_secp256r1_sha256 -groups P-384 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=ecdsa_secp256r1_sha256 curves=secp384r1,secp256r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -727,10 +770,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_256_GCM_SHA384,secp384r1,ecdsa_secp256r1_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-SECP384R1:+SHA384:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-SECP384R1:+SHA384:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=ecdsa_secp256r1_sha256 curves=secp384r1,secp256r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -742,10 +786,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_256_GCM_SHA384,secp521r1,ecdsa_secp256r1_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs ecdsa_secp256r1_sha256 -groups P-521 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs ecdsa_secp256r1_sha256 -groups P-521 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=ecdsa_secp256r1_sha256 curves=secp521r1,secp256r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -759,10 +804,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_256_GCM_SHA384,secp521r1,ecdsa_secp256r1_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-SECP521R1:+SHA384:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-SECP521R1:+SHA384:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=ecdsa_secp256r1_sha256 curves=secp521r1,secp256r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -774,10 +820,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_256_GCM_SHA384,x25519,ecdsa_secp256r1_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs ecdsa_secp256r1_sha256 -groups X25519 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs ecdsa_secp256r1_sha256 -groups X25519 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=ecdsa_secp256r1_sha256 curves=x25519,secp256r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -791,10 +838,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_256_GCM_SHA384,x25519,ecdsa_secp256r1_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-X25519:+SHA384:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-X25519:+SHA384:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=ecdsa_secp256r1_sha256 curves=x25519,secp256r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -806,10 +854,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_256_GCM_SHA384,x448,ecdsa_secp256r1_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs ecdsa_secp256r1_sha256 -groups X448 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs ecdsa_secp256r1_sha256 -groups X448 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=ecdsa_secp256r1_sha256 curves=x448,secp256r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -823,10 +872,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_256_GCM_SHA384,x448,ecdsa_secp256r1_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-X448:+SHA384:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-X448:+SHA384:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=ecdsa_secp256r1_sha256 curves=x448,secp256r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -838,10 +888,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_256_GCM_SHA384,secp256r1,ecdsa_secp384r1_sha384" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs ecdsa_secp384r1_sha384 -groups P-256 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs ecdsa_secp384r1_sha384 -groups P-256 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=ecdsa_secp384r1_sha384 curves=secp256r1,secp384r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -855,10 +906,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_256_GCM_SHA384,secp256r1,ecdsa_secp384r1_sha384" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-SECP256R1:+SHA384:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-SECP256R1:+SHA384:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=ecdsa_secp384r1_sha384 curves=secp256r1,secp384r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -870,10 +922,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_256_GCM_SHA384,secp384r1,ecdsa_secp384r1_sha384" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs ecdsa_secp384r1_sha384 -groups P-384 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs ecdsa_secp384r1_sha384 -groups P-384 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=ecdsa_secp384r1_sha384 curves=secp384r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -887,10 +940,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_256_GCM_SHA384,secp384r1,ecdsa_secp384r1_sha384" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-SECP384R1:+SHA384:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-SECP384R1:+SHA384:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=ecdsa_secp384r1_sha384 curves=secp384r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -902,10 +956,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_256_GCM_SHA384,secp521r1,ecdsa_secp384r1_sha384" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs ecdsa_secp384r1_sha384 -groups P-521 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs ecdsa_secp384r1_sha384 -groups P-521 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=ecdsa_secp384r1_sha384 curves=secp521r1,secp384r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -919,10 +974,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_256_GCM_SHA384,secp521r1,ecdsa_secp384r1_sha384" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-SECP521R1:+SHA384:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-SECP521R1:+SHA384:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=ecdsa_secp384r1_sha384 curves=secp521r1,secp384r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -934,10 +990,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_256_GCM_SHA384,x25519,ecdsa_secp384r1_sha384" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs ecdsa_secp384r1_sha384 -groups X25519 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs ecdsa_secp384r1_sha384 -groups X25519 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=ecdsa_secp384r1_sha384 curves=x25519,secp384r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -951,10 +1008,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_256_GCM_SHA384,x25519,ecdsa_secp384r1_sha384" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-X25519:+SHA384:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-X25519:+SHA384:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=ecdsa_secp384r1_sha384 curves=x25519,secp384r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -966,10 +1024,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_256_GCM_SHA384,x448,ecdsa_secp384r1_sha384" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs ecdsa_secp384r1_sha384 -groups X448 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs ecdsa_secp384r1_sha384 -groups X448 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=ecdsa_secp384r1_sha384 curves=x448,secp384r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -983,10 +1042,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_256_GCM_SHA384,x448,ecdsa_secp384r1_sha384" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-X448:+SHA384:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-X448:+SHA384:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=ecdsa_secp384r1_sha384 curves=x448,secp384r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -998,10 +1058,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_256_GCM_SHA384,secp256r1,ecdsa_secp521r1_sha512" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs ecdsa_secp521r1_sha512 -groups P-256 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs ecdsa_secp521r1_sha512 -groups P-256 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=ecdsa_secp521r1_sha512 curves=secp256r1,secp521r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -1015,10 +1076,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_256_GCM_SHA384,secp256r1,ecdsa_secp521r1_sha512" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-SECP256R1:+SHA384:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-SECP256R1:+SHA384:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=ecdsa_secp521r1_sha512 curves=secp256r1,secp521r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -1030,10 +1092,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_256_GCM_SHA384,secp384r1,ecdsa_secp521r1_sha512" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs ecdsa_secp521r1_sha512 -groups P-384 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs ecdsa_secp521r1_sha512 -groups P-384 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=ecdsa_secp521r1_sha512 curves=secp384r1,secp521r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -1047,10 +1110,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_256_GCM_SHA384,secp384r1,ecdsa_secp521r1_sha512" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-SECP384R1:+SHA384:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-SECP384R1:+SHA384:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=ecdsa_secp521r1_sha512 curves=secp384r1,secp521r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -1062,10 +1126,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_256_GCM_SHA384,secp521r1,ecdsa_secp521r1_sha512" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs ecdsa_secp521r1_sha512 -groups P-521 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs ecdsa_secp521r1_sha512 -groups P-521 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=ecdsa_secp521r1_sha512 curves=secp521r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -1079,10 +1144,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_256_GCM_SHA384,secp521r1,ecdsa_secp521r1_sha512" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-SECP521R1:+SHA384:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-SECP521R1:+SHA384:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=ecdsa_secp521r1_sha512 curves=secp521r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -1094,10 +1160,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_256_GCM_SHA384,x25519,ecdsa_secp521r1_sha512" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs ecdsa_secp521r1_sha512 -groups X25519 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs ecdsa_secp521r1_sha512 -groups X25519 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=ecdsa_secp521r1_sha512 curves=x25519,secp521r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -1111,10 +1178,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_256_GCM_SHA384,x25519,ecdsa_secp521r1_sha512" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-X25519:+SHA384:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-X25519:+SHA384:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=ecdsa_secp521r1_sha512 curves=x25519,secp521r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -1126,10 +1194,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_256_GCM_SHA384,x448,ecdsa_secp521r1_sha512" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs ecdsa_secp521r1_sha512 -groups X448 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs ecdsa_secp521r1_sha512 -groups X448 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=ecdsa_secp521r1_sha512 curves=x448,secp521r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -1143,10 +1212,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_256_GCM_SHA384,x448,ecdsa_secp521r1_sha512" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-X448:+SHA384:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-X448:+SHA384:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=ecdsa_secp521r1_sha512 curves=x448,secp521r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -1158,11 +1228,12 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->O: TLS_AES_256_GCM_SHA384,secp256r1,rsa_pss_rsae_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs rsa_pss_rsae_sha256 -groups P-256 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs rsa_pss_rsae_sha256 -groups P-256 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=rsa_pss_rsae_sha256 curves=secp256r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -1176,11 +1247,12 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->G: TLS_AES_256_GCM_SHA384,secp256r1,rsa_pss_rsae_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-SECP256R1:+SHA384:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-SECP256R1:+SHA384:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=rsa_pss_rsae_sha256 curves=secp256r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -1192,11 +1264,12 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->O: TLS_AES_256_GCM_SHA384,secp384r1,rsa_pss_rsae_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs rsa_pss_rsae_sha256 -groups P-384 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs rsa_pss_rsae_sha256 -groups P-384 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=rsa_pss_rsae_sha256 curves=secp384r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -1210,11 +1283,12 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->G: TLS_AES_256_GCM_SHA384,secp384r1,rsa_pss_rsae_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-SECP384R1:+SHA384:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-SECP384R1:+SHA384:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=rsa_pss_rsae_sha256 curves=secp384r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -1226,11 +1300,12 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->O: TLS_AES_256_GCM_SHA384,secp521r1,rsa_pss_rsae_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs rsa_pss_rsae_sha256 -groups P-521 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs rsa_pss_rsae_sha256 -groups P-521 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=rsa_pss_rsae_sha256 curves=secp521r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -1244,11 +1319,12 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->G: TLS_AES_256_GCM_SHA384,secp521r1,rsa_pss_rsae_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-SECP521R1:+SHA384:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-SECP521R1:+SHA384:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=rsa_pss_rsae_sha256 curves=secp521r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -1260,11 +1336,12 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->O: TLS_AES_256_GCM_SHA384,x25519,rsa_pss_rsae_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs rsa_pss_rsae_sha256 -groups X25519 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs rsa_pss_rsae_sha256 -groups X25519 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=rsa_pss_rsae_sha256 curves=x25519" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -1278,11 +1355,12 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->G: TLS_AES_256_GCM_SHA384,x25519,rsa_pss_rsae_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-X25519:+SHA384:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-X25519:+SHA384:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=rsa_pss_rsae_sha256 curves=x25519" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -1294,11 +1372,12 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->O: TLS_AES_256_GCM_SHA384,x448,rsa_pss_rsae_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs rsa_pss_rsae_sha256 -groups X448 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_256_GCM_SHA384 -sigalgs rsa_pss_rsae_sha256 -groups X448 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=rsa_pss_rsae_sha256 curves=x448" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -1312,11 +1391,12 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->G: TLS_AES_256_GCM_SHA384,x448,rsa_pss_rsae_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-X448:+SHA384:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-256-GCM:+GROUP-X448:+SHA384:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-256-GCM-SHA384 sig_algs=rsa_pss_rsae_sha256 curves=x448" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -1328,10 +1408,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_CHACHA20_POLY1305_SHA256,secp256r1,ecdsa_secp256r1_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups P-256 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups P-256 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=secp256r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -1345,10 +1426,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_CHACHA20_POLY1305_SHA256,secp256r1,ecdsa_secp256r1_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-SECP256R1:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-SECP256R1:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=secp256r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -1360,10 +1442,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_CHACHA20_POLY1305_SHA256,secp384r1,ecdsa_secp256r1_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups P-384 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups P-384 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=secp384r1,secp256r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -1377,10 +1460,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_CHACHA20_POLY1305_SHA256,secp384r1,ecdsa_secp256r1_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-SECP384R1:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-SECP384R1:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=secp384r1,secp256r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -1392,10 +1476,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_CHACHA20_POLY1305_SHA256,secp521r1,ecdsa_secp256r1_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups P-521 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups P-521 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=secp521r1,secp256r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -1409,10 +1494,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_CHACHA20_POLY1305_SHA256,secp521r1,ecdsa_secp256r1_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-SECP521R1:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-SECP521R1:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=secp521r1,secp256r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -1424,10 +1510,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_CHACHA20_POLY1305_SHA256,x25519,ecdsa_secp256r1_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups X25519 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups X25519 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=x25519,secp256r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -1441,10 +1528,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_CHACHA20_POLY1305_SHA256,x25519,ecdsa_secp256r1_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-X25519:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-X25519:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=x25519,secp256r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -1456,10 +1544,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_CHACHA20_POLY1305_SHA256,x448,ecdsa_secp256r1_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups X448 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups X448 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=x448,secp256r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -1473,10 +1562,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_CHACHA20_POLY1305_SHA256,x448,ecdsa_secp256r1_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-X448:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-X448:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=x448,secp256r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -1488,10 +1578,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_CHACHA20_POLY1305_SHA256,secp256r1,ecdsa_secp384r1_sha384" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups P-256 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups P-256 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=secp256r1,secp384r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -1505,10 +1596,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_CHACHA20_POLY1305_SHA256,secp256r1,ecdsa_secp384r1_sha384" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-SECP256R1:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-SECP256R1:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=secp256r1,secp384r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -1520,10 +1612,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_CHACHA20_POLY1305_SHA256,secp384r1,ecdsa_secp384r1_sha384" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups P-384 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups P-384 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=secp384r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -1537,10 +1630,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_CHACHA20_POLY1305_SHA256,secp384r1,ecdsa_secp384r1_sha384" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-SECP384R1:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-SECP384R1:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=secp384r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -1552,10 +1646,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_CHACHA20_POLY1305_SHA256,secp521r1,ecdsa_secp384r1_sha384" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups P-521 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups P-521 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=secp521r1,secp384r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -1569,10 +1664,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_CHACHA20_POLY1305_SHA256,secp521r1,ecdsa_secp384r1_sha384" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-SECP521R1:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-SECP521R1:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=secp521r1,secp384r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -1584,10 +1680,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_CHACHA20_POLY1305_SHA256,x25519,ecdsa_secp384r1_sha384" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups X25519 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups X25519 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=x25519,secp384r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -1601,10 +1698,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_CHACHA20_POLY1305_SHA256,x25519,ecdsa_secp384r1_sha384" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-X25519:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-X25519:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=x25519,secp384r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -1616,10 +1714,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_CHACHA20_POLY1305_SHA256,x448,ecdsa_secp384r1_sha384" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups X448 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups X448 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=x448,secp384r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -1633,10 +1732,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_CHACHA20_POLY1305_SHA256,x448,ecdsa_secp384r1_sha384" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-X448:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-X448:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=x448,secp384r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -1648,10 +1748,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_CHACHA20_POLY1305_SHA256,secp256r1,ecdsa_secp521r1_sha512" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups P-256 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups P-256 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=secp256r1,secp521r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -1665,10 +1766,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_CHACHA20_POLY1305_SHA256,secp256r1,ecdsa_secp521r1_sha512" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-SECP256R1:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-SECP256R1:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=secp256r1,secp521r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -1680,10 +1782,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_CHACHA20_POLY1305_SHA256,secp384r1,ecdsa_secp521r1_sha512" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups P-384 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups P-384 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=secp384r1,secp521r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -1697,10 +1800,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_CHACHA20_POLY1305_SHA256,secp384r1,ecdsa_secp521r1_sha512" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-SECP384R1:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-SECP384R1:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=secp384r1,secp521r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -1712,10 +1816,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_CHACHA20_POLY1305_SHA256,secp521r1,ecdsa_secp521r1_sha512" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups P-521 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups P-521 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=secp521r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -1729,10 +1834,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_CHACHA20_POLY1305_SHA256,secp521r1,ecdsa_secp521r1_sha512" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-SECP521R1:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-SECP521R1:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=secp521r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -1744,10 +1850,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_CHACHA20_POLY1305_SHA256,x25519,ecdsa_secp521r1_sha512" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups X25519 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups X25519 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=x25519,secp521r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -1761,10 +1868,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_CHACHA20_POLY1305_SHA256,x25519,ecdsa_secp521r1_sha512" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-X25519:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-X25519:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=x25519,secp521r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -1776,10 +1884,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_CHACHA20_POLY1305_SHA256,x448,ecdsa_secp521r1_sha512" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups X448 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups X448 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=x448,secp521r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -1793,10 +1902,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_CHACHA20_POLY1305_SHA256,x448,ecdsa_secp521r1_sha512" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-X448:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-X448:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=x448,secp521r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -1808,11 +1918,12 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->O: TLS_CHACHA20_POLY1305_SHA256,secp256r1,rsa_pss_rsae_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups P-256 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups P-256 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=secp256r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -1826,11 +1937,12 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->G: TLS_CHACHA20_POLY1305_SHA256,secp256r1,rsa_pss_rsae_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-SECP256R1:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-SECP256R1:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=secp256r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -1842,11 +1954,12 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->O: TLS_CHACHA20_POLY1305_SHA256,secp384r1,rsa_pss_rsae_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups P-384 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups P-384 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=secp384r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -1860,11 +1973,12 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->G: TLS_CHACHA20_POLY1305_SHA256,secp384r1,rsa_pss_rsae_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-SECP384R1:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-SECP384R1:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=secp384r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -1876,11 +1990,12 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->O: TLS_CHACHA20_POLY1305_SHA256,secp521r1,rsa_pss_rsae_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups P-521 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups P-521 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=secp521r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -1894,11 +2009,12 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->G: TLS_CHACHA20_POLY1305_SHA256,secp521r1,rsa_pss_rsae_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-SECP521R1:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-SECP521R1:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=secp521r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -1910,11 +2026,12 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->O: TLS_CHACHA20_POLY1305_SHA256,x25519,rsa_pss_rsae_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups X25519 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups X25519 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=x25519" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -1928,11 +2045,12 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->G: TLS_CHACHA20_POLY1305_SHA256,x25519,rsa_pss_rsae_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-X25519:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-X25519:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=x25519" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -1944,11 +2062,12 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->O: TLS_CHACHA20_POLY1305_SHA256,x448,rsa_pss_rsae_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups X448 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_CHACHA20_POLY1305_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups X448 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=x448" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -1962,11 +2081,12 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->G: TLS_CHACHA20_POLY1305_SHA256,x448,rsa_pss_rsae_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-X448:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+CHACHA20-POLY1305:+GROUP-X448:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-CHACHA20-POLY1305-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=x448" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -1978,10 +2098,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_SHA256,secp256r1,ecdsa_secp256r1_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups P-256 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups P-256 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=secp256r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -1995,10 +2116,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_SHA256,secp256r1,ecdsa_secp256r1_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-SECP256R1:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-SECP256R1:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=secp256r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -2010,10 +2132,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_SHA256,secp384r1,ecdsa_secp256r1_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups P-384 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups P-384 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=secp384r1,secp256r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -2027,10 +2150,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_SHA256,secp384r1,ecdsa_secp256r1_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-SECP384R1:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-SECP384R1:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=secp384r1,secp256r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -2042,10 +2166,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_SHA256,secp521r1,ecdsa_secp256r1_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups P-521 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups P-521 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=secp521r1,secp256r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -2059,10 +2184,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_SHA256,secp521r1,ecdsa_secp256r1_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-SECP521R1:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-SECP521R1:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=secp521r1,secp256r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -2074,10 +2200,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_SHA256,x25519,ecdsa_secp256r1_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups X25519 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups X25519 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=x25519,secp256r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -2091,10 +2218,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_SHA256,x25519,ecdsa_secp256r1_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-X25519:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-X25519:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=x25519,secp256r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -2106,10 +2234,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_SHA256,x448,ecdsa_secp256r1_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups X448 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups X448 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=x448,secp256r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -2123,10 +2252,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_SHA256,x448,ecdsa_secp256r1_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-X448:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-X448:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=x448,secp256r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -2138,10 +2268,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_SHA256,secp256r1,ecdsa_secp384r1_sha384" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups P-256 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups P-256 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=secp256r1,secp384r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -2155,10 +2286,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_SHA256,secp256r1,ecdsa_secp384r1_sha384" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-SECP256R1:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-SECP256R1:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=secp256r1,secp384r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -2170,10 +2302,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_SHA256,secp384r1,ecdsa_secp384r1_sha384" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups P-384 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups P-384 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=secp384r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -2187,10 +2320,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_SHA256,secp384r1,ecdsa_secp384r1_sha384" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-SECP384R1:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-SECP384R1:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=secp384r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -2202,10 +2336,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_SHA256,secp521r1,ecdsa_secp384r1_sha384" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups P-521 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups P-521 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=secp521r1,secp384r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -2219,10 +2354,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_SHA256,secp521r1,ecdsa_secp384r1_sha384" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-SECP521R1:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-SECP521R1:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=secp521r1,secp384r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -2234,10 +2370,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_SHA256,x25519,ecdsa_secp384r1_sha384" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups X25519 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups X25519 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=x25519,secp384r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -2251,10 +2388,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_SHA256,x25519,ecdsa_secp384r1_sha384" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-X25519:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-X25519:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=x25519,secp384r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -2266,10 +2404,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_SHA256,x448,ecdsa_secp384r1_sha384" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups X448 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups X448 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=x448,secp384r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -2283,10 +2422,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_SHA256,x448,ecdsa_secp384r1_sha384" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-X448:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-X448:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=x448,secp384r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -2298,10 +2438,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_SHA256,secp256r1,ecdsa_secp521r1_sha512" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups P-256 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups P-256 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=secp256r1,secp521r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -2315,10 +2456,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_SHA256,secp256r1,ecdsa_secp521r1_sha512" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-SECP256R1:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-SECP256R1:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=secp256r1,secp521r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -2330,10 +2472,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_SHA256,secp384r1,ecdsa_secp521r1_sha512" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups P-384 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups P-384 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=secp384r1,secp521r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -2347,10 +2490,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_SHA256,secp384r1,ecdsa_secp521r1_sha512" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-SECP384R1:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-SECP384R1:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=secp384r1,secp521r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -2362,10 +2506,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_SHA256,secp521r1,ecdsa_secp521r1_sha512" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups P-521 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups P-521 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=secp521r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -2379,10 +2524,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_SHA256,secp521r1,ecdsa_secp521r1_sha512" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-SECP521R1:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-SECP521R1:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=secp521r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -2394,10 +2540,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_SHA256,x25519,ecdsa_secp521r1_sha512" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups X25519 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups X25519 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=x25519,secp521r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -2411,10 +2558,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_SHA256,x25519,ecdsa_secp521r1_sha512" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-X25519:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-X25519:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=x25519,secp521r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -2426,10 +2574,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_SHA256,x448,ecdsa_secp521r1_sha512" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups X448 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups X448 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=x448,secp521r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -2443,10 +2592,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_SHA256,x448,ecdsa_secp521r1_sha512" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-X448:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-X448:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=x448,secp521r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -2458,11 +2608,12 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_SHA256,secp256r1,rsa_pss_rsae_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups P-256 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups P-256 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=secp256r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -2476,11 +2627,12 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_SHA256,secp256r1,rsa_pss_rsae_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-SECP256R1:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-SECP256R1:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=secp256r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -2492,11 +2644,12 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_SHA256,secp384r1,rsa_pss_rsae_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups P-384 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups P-384 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=secp384r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -2510,11 +2663,12 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_SHA256,secp384r1,rsa_pss_rsae_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-SECP384R1:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-SECP384R1:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=secp384r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -2526,11 +2680,12 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_SHA256,secp521r1,rsa_pss_rsae_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups P-521 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups P-521 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=secp521r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -2544,11 +2699,12 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_SHA256,secp521r1,rsa_pss_rsae_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-SECP521R1:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-SECP521R1:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=secp521r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -2560,11 +2716,12 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_SHA256,x25519,rsa_pss_rsae_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups X25519 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups X25519 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=x25519" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -2578,11 +2735,12 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_SHA256,x25519,rsa_pss_rsae_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-X25519:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-X25519:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=x25519" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -2594,11 +2752,12 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_SHA256,x448,rsa_pss_rsae_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups X448 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups X448 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=x448" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -2612,11 +2771,12 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_SHA256,x448,rsa_pss_rsae_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-X448:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-128-CCM:+GROUP-X448:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-128-CCM-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=x448" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -2628,10 +2788,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_8_SHA256,secp256r1,ecdsa_secp256r1_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups P-256 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups P-256 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=secp256r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -2645,10 +2806,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_8_SHA256,secp256r1,ecdsa_secp256r1_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-SECP256R1:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-SECP256R1:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=secp256r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -2660,10 +2822,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_8_SHA256,secp384r1,ecdsa_secp256r1_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups P-384 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups P-384 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=secp384r1,secp256r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -2677,10 +2840,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_8_SHA256,secp384r1,ecdsa_secp256r1_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-SECP384R1:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-SECP384R1:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=secp384r1,secp256r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -2692,10 +2856,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_8_SHA256,secp521r1,ecdsa_secp256r1_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups P-521 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups P-521 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=secp521r1,secp256r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -2709,10 +2874,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_8_SHA256,secp521r1,ecdsa_secp256r1_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-SECP521R1:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-SECP521R1:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=secp521r1,secp256r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -2724,10 +2890,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_8_SHA256,x25519,ecdsa_secp256r1_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups X25519 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups X25519 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=x25519,secp256r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -2741,10 +2908,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_8_SHA256,x25519,ecdsa_secp256r1_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-X25519:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-X25519:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=x25519,secp256r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -2756,10 +2924,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_8_SHA256,x448,ecdsa_secp256r1_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups X448 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp256r1.crt -key data_files/ecdsa_secp256r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs ecdsa_secp256r1_sha256 -groups X448 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=x448,secp256r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -2773,10 +2942,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_8_SHA256,x448,ecdsa_secp256r1_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-X448:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp256r1.crt --x509keyfile data_files/ecdsa_secp256r1.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-X448:+SHA256:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=ecdsa_secp256r1_sha256 curves=x448,secp256r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -2788,10 +2958,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_8_SHA256,secp256r1,ecdsa_secp384r1_sha384" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups P-256 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups P-256 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=secp256r1,secp384r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -2805,10 +2976,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_8_SHA256,secp256r1,ecdsa_secp384r1_sha384" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-SECP256R1:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-SECP256R1:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=secp256r1,secp384r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -2820,10 +2992,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_8_SHA256,secp384r1,ecdsa_secp384r1_sha384" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups P-384 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups P-384 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=secp384r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -2837,10 +3010,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_8_SHA256,secp384r1,ecdsa_secp384r1_sha384" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-SECP384R1:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-SECP384R1:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=secp384r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -2852,10 +3026,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_8_SHA256,secp521r1,ecdsa_secp384r1_sha384" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups P-521 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups P-521 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=secp521r1,secp384r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -2869,10 +3044,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_8_SHA256,secp521r1,ecdsa_secp384r1_sha384" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-SECP521R1:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-SECP521R1:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=secp521r1,secp384r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -2884,10 +3060,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_8_SHA256,x25519,ecdsa_secp384r1_sha384" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups X25519 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups X25519 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=x25519,secp384r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -2901,10 +3078,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_8_SHA256,x25519,ecdsa_secp384r1_sha384" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-X25519:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-X25519:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=x25519,secp384r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -2916,10 +3094,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_8_SHA256,x448,ecdsa_secp384r1_sha384" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups X448 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp384r1.crt -key data_files/ecdsa_secp384r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs ecdsa_secp384r1_sha384 -groups X448 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=x448,secp384r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -2933,10 +3112,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_8_SHA256,x448,ecdsa_secp384r1_sha384" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-X448:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp384r1.crt --x509keyfile data_files/ecdsa_secp384r1.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-X448:+SHA256:+SIGN-ECDSA-SECP384R1-SHA384:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=ecdsa_secp384r1_sha384 curves=x448,secp384r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -2948,10 +3128,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_8_SHA256,secp256r1,ecdsa_secp521r1_sha512" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups P-256 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups P-256 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=secp256r1,secp521r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -2965,10 +3146,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_8_SHA256,secp256r1,ecdsa_secp521r1_sha512" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-SECP256R1:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-SECP256R1:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=secp256r1,secp521r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -2980,10 +3162,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_8_SHA256,secp384r1,ecdsa_secp521r1_sha512" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups P-384 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups P-384 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=secp384r1,secp521r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -2997,10 +3180,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_8_SHA256,secp384r1,ecdsa_secp521r1_sha512" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-SECP384R1:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-SECP384R1:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=secp384r1,secp521r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -3012,10 +3196,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_8_SHA256,secp521r1,ecdsa_secp521r1_sha512" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups P-521 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups P-521 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=secp521r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -3029,10 +3214,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_8_SHA256,secp521r1,ecdsa_secp521r1_sha512" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-SECP521R1:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-SECP521R1:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=secp521r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -3044,10 +3230,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_8_SHA256,x25519,ecdsa_secp521r1_sha512" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups X25519 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups X25519 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=x25519,secp521r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -3061,10 +3248,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_8_SHA256,x25519,ecdsa_secp521r1_sha512" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-X25519:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-X25519:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=x25519,secp521r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -3076,10 +3264,11 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_8_SHA256,x448,ecdsa_secp521r1_sha512" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups X448 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/ecdsa_secp521r1.crt -key data_files/ecdsa_secp521r1.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs ecdsa_secp521r1_sha512 -groups X448 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=x448,secp521r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -3093,10 +3282,11 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_8_SHA256,x448,ecdsa_secp521r1_sha512" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-X448:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/ecdsa_secp521r1.crt --x509keyfile data_files/ecdsa_secp521r1.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-X448:+SHA256:+SIGN-ECDSA-SECP521R1-SHA512:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca2.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=ecdsa_secp521r1_sha512 curves=x448,secp521r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -3108,11 +3298,12 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_8_SHA256,secp256r1,rsa_pss_rsae_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups P-256 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups P-256 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=secp256r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -3126,11 +3317,12 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_8_SHA256,secp256r1,rsa_pss_rsae_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-SECP256R1:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-SECP256R1:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=secp256r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -3142,11 +3334,12 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_8_SHA256,secp384r1,rsa_pss_rsae_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups P-384 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups P-384 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=secp384r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -3160,11 +3353,12 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_8_SHA256,secp384r1,rsa_pss_rsae_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-SECP384R1:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-SECP384R1:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=secp384r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -3176,11 +3370,12 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_8_SHA256,secp521r1,rsa_pss_rsae_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups P-521 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups P-521 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=secp521r1" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -3194,11 +3389,12 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_8_SHA256,secp521r1,rsa_pss_rsae_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-SECP521R1:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-SECP521R1:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=secp521r1" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -3210,11 +3406,12 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_8_SHA256,x25519,rsa_pss_rsae_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups X25519 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups X25519 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=x25519" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -3228,11 +3425,12 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_8_SHA256,x25519,rsa_pss_rsae_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-X25519:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-X25519:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=x25519" \
          0 \
          -c "HTTP/1.0 200 OK" \
@@ -3244,11 +3442,12 @@
 requires_openssl_tls1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->O: TLS_AES_128_CCM_8_SHA256,x448,rsa_pss_rsae_sha256" \
-         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups X448 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+         "$O_NEXT_SRV_NO_CERT -cert data_files/server2-sha256.crt -key data_files/server2.key -accept $SRV_PORT -ciphersuites TLS_AES_128_CCM_8_SHA256 -sigalgs rsa_pss_rsae_sha256 -groups X448 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=x448" \
          0 \
          -c "HTTP/1.0 200 ok" \
@@ -3262,11 +3461,12 @@
 requires_gnutls_next_disable_tls13_compat
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_CLI_C
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT
 run_test "TLS 1.3 m->G: TLS_AES_128_CCM_8_SHA256,x448,rsa_pss_rsae_sha256" \
-         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-X448:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+         "$G_NEXT_SRV_NO_CERT --http --disable-client-cert --debug=4 --x509certfile data_files/server2-sha256.crt --x509keyfile data_files/server2.key --priority=NONE:+AEAD:+AES-128-CCM-8:+GROUP-X448:+SHA256:+SIGN-RSA-PSS-RSAE-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
          "$P_CLI server_addr=127.0.0.1 server_port=$SRV_PORT debug_level=4 force_version=tls13 ca_file=data_files/test-ca_cat12.crt force_ciphersuite=TLS1-3-AES-128-CCM-8-SHA256 sig_algs=rsa_pss_rsae_sha256 curves=x448" \
          0 \
          -c "HTTP/1.0 200 OK" \
diff --git a/tests/scripts/all.sh b/tests/scripts/all.sh
index 9235be7..72302f3 100755
--- a/tests/scripts/all.sh
+++ b/tests/scripts/all.sh
@@ -1531,6 +1531,7 @@
     scripts/config.py set MBEDTLS_ECP_RESTARTABLE  # not using PSA, so enable restartable ECC
     scripts/config.py unset MBEDTLS_PSA_CRYPTO_C
     scripts/config.py unset MBEDTLS_USE_PSA_CRYPTO
+    scripts/config.py unset MBEDTLS_SSL_PROTO_TLS1_3
     scripts/config.py unset MBEDTLS_PSA_ITS_FILE_C
     scripts/config.py unset MBEDTLS_PSA_CRYPTO_SE_C
     scripts/config.py unset MBEDTLS_PSA_CRYPTO_STORAGE_C
@@ -1866,8 +1867,8 @@
     scripts/config.py set MBEDTLS_PSA_CRYPTO_DRIVERS
     scripts/config.py unset MBEDTLS_USE_PSA_CRYPTO
     scripts/config.py unset MBEDTLS_HKDF_C
-    # Make sure to unset TLS1_3_EXPERIMENTAL since it requires HKDF_C and will not build properly without it.
-    scripts/config.py unset MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+    # Make sure to unset TLS1_3 since it requires HKDF_C and will not build properly without it.
+    scripts/config.py unset MBEDTLS_SSL_PROTO_TLS1_3
     # Need to define the correct symbol and include the test driver header path in order to build with the test driver
     make CC=gcc CFLAGS="$ASAN_CFLAGS -DPSA_CRYPTO_DRIVER_TEST -DMBEDTLS_PSA_ACCEL_ALG_HKDF -I../tests/include -O2" LDFLAGS="$ASAN_CFLAGS"
 }
@@ -2723,52 +2724,69 @@
     armc6_build_test "--target=aarch64-arm-none-eabi -march=armv8.2-a"
 }
 
-component_test_tls13_experimental () {
-    msg "build: default config with MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL enabled, without padding"
-    scripts/config.pl set MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
-    scripts/config.pl set MBEDTLS_SSL_CID_TLS1_3_PADDING_GRANULARITY 1
+component_test_tls13 () {
+    msg "build: default config with MBEDTLS_SSL_PROTO_TLS1_3 enabled, without padding"
+    scripts/config.py set MBEDTLS_SSL_PROTO_TLS1_3
+    scripts/config.py set MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
+    scripts/config.py set MBEDTLS_SSL_CID_TLS1_3_PADDING_GRANULARITY 1
     CC=gcc cmake -D CMAKE_BUILD_TYPE:String=Asan .
     make
-    msg "test: default config with MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL enabled, without padding"
+    msg "test: default config with MBEDTLS_SSL_PROTO_TLS1_3 enabled, without padding"
     make test
-    msg "ssl-opt.sh (TLS 1.3 experimental)"
+    msg "ssl-opt.sh (TLS 1.3)"
     if_build_succeeded tests/ssl-opt.sh
 }
 
-component_test_tls13_experimental_with_padding () {
-    msg "build: default config with MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL enabled, with padding"
-    scripts/config.pl set MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
-    scripts/config.pl set MBEDTLS_SSL_CID_TLS1_3_PADDING_GRANULARITY 16
+component_test_tls13_no_compatibility_mode () {
+    msg "build: default config with MBEDTLS_SSL_PROTO_TLS1_3 enabled, without padding"
+    scripts/config.py set   MBEDTLS_SSL_PROTO_TLS1_3
+    scripts/config.py unset MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
+    scripts/config.py set   MBEDTLS_SSL_CID_TLS1_3_PADDING_GRANULARITY 1
     CC=gcc cmake -D CMAKE_BUILD_TYPE:String=Asan .
     make
-    msg "test: default config with MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL enabled, with padding"
+    msg "test: default config with MBEDTLS_SSL_PROTO_TLS1_3 enabled, without padding"
     make test
-    msg "ssl-opt.sh (TLS 1.3 experimental)"
+    msg "ssl-opt.sh (TLS 1.3 no compatibility mode)"
     if_build_succeeded tests/ssl-opt.sh
 }
 
-component_test_tls13_experimental_with_ecp_restartable () {
-    msg "build: default config with MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL enabled, with ecp_restartable"
-    scripts/config.py set MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+component_test_tls13_with_padding () {
+    msg "build: default config with MBEDTLS_SSL_PROTO_TLS1_3 enabled, with padding"
+    scripts/config.py set MBEDTLS_SSL_PROTO_TLS1_3
+    scripts/config.py set MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
+    scripts/config.py set MBEDTLS_SSL_CID_TLS1_3_PADDING_GRANULARITY 16
+    CC=gcc cmake -D CMAKE_BUILD_TYPE:String=Asan .
+    make
+    msg "test: default config with MBEDTLS_SSL_PROTO_TLS1_3 enabled, with padding"
+    make test
+    msg "ssl-opt.sh (TLS 1.3 with padding)"
+    if_build_succeeded tests/ssl-opt.sh
+}
+
+component_test_tls13_with_ecp_restartable () {
+    msg "build: default config with MBEDTLS_SSL_PROTO_TLS1_3 enabled, with ecp_restartable"
+    scripts/config.py set MBEDTLS_SSL_PROTO_TLS1_3
+    scripts/config.py set MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
     scripts/config.py set MBEDTLS_ECP_RESTARTABLE
     CC=gcc cmake -D CMAKE_BUILD_TYPE:String=Asan .
     make
-    msg "test: default config with MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL enabled, with ecp_restartable"
+    msg "test: default config with MBEDTLS_SSL_PROTO_TLS1_3 enabled, with ecp_restartable"
     make test
-    msg "ssl-opt.sh (TLS 1.3 experimental)"
+    msg "ssl-opt.sh (TLS 1.3 with ecp_restartable)"
     if_build_succeeded tests/ssl-opt.sh
 }
 
-component_test_tls13_experimental_with_everest () {
-    msg "build: default config with MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL enabled, with Everest"
-    scripts/config.py set MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+component_test_tls13_with_everest () {
+    msg "build: default config with MBEDTLS_SSL_PROTO_TLS1_3 enabled, with Everest"
+    scripts/config.py set MBEDTLS_SSL_PROTO_TLS1_3
+    scripts/config.py set MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
     scripts/config.py set MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED
     scripts/config.py unset MBEDTLS_ECP_RESTARTABLE
     CC=gcc cmake -D CMAKE_BUILD_TYPE:String=Asan .
     make
-    msg "test: default config with MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL enabled, with Everest"
+    msg "test: default config with MBEDTLS_SSL_PROTO_TLS1_3 enabled, with Everest"
     make test
-    msg "ssl-opt.sh (TLS 1.3 experimental)"
+    msg "ssl-opt.sh (TLS 1.3 with everest)"
     if_build_succeeded tests/ssl-opt.sh
 }
 
diff --git a/tests/scripts/check-generated-files.sh b/tests/scripts/check-generated-files.sh
index 0399484..994fd24 100755
--- a/tests/scripts/check-generated-files.sh
+++ b/tests/scripts/check-generated-files.sh
@@ -118,6 +118,7 @@
 check scripts/generate_errors.pl library/error.c
 check scripts/generate_query_config.pl programs/test/query_config.c
 check scripts/generate_features.pl library/version_features.c
+check scripts/generate_ssl_debug_helpers.py library/ssl_debug_helpers_generated.c
 # generate_visualc_files enumerates source files (library/*.c). It doesn't
 # care about their content, but the files must exist. So it must run after
 # the step that creates or updates these files.
diff --git a/tests/scripts/check_names.py b/tests/scripts/check_names.py
index 562a365..8bb4923 100755
--- a/tests/scripts/check_names.py
+++ b/tests/scripts/check_names.py
@@ -457,6 +457,139 @@
 
         return enum_consts
 
+    IGNORED_CHUNK_REGEX = re.compile('|'.join([
+        r'/\*.*?\*/', # block comment entirely on one line
+        r'//.*', # line comment
+        r'(?P<string>")(?:[^\\\"]|\\.)*"', # string literal
+    ]))
+
+    def strip_comments_and_literals(self, line, in_block_comment):
+        """Strip comments and string literals from line.
+
+        Continuation lines are not supported.
+
+        If in_block_comment is true, assume that the line starts inside a
+        block comment.
+
+        Return updated values of (line, in_block_comment) where:
+        * Comments in line have been replaced by a space (or nothing at the
+          start or end of the line).
+        * String contents have been removed.
+        * in_block_comment indicates whether the line ends inside a block
+          comment that continues on the next line.
+        """
+
+        # Terminate current multiline comment?
+        if in_block_comment:
+            m = re.search(r"\*/", line)
+            if m:
+                in_block_comment = False
+                line = line[m.end(0):]
+            else:
+                return '', True
+
+        # Remove full comments and string literals.
+        # Do it all together to handle cases like "/*" correctly.
+        # Note that continuation lines are not supported.
+        line = re.sub(self.IGNORED_CHUNK_REGEX,
+                      lambda s: '""' if s.group('string') else ' ',
+                      line)
+
+        # Start an unfinished comment?
+        # (If `/*` was part of a complete comment, it's already been removed.)
+        m = re.search(r"/\*", line)
+        if m:
+            in_block_comment = True
+            line = line[:m.start(0)]
+
+        return line, in_block_comment
+
+    IDENTIFIER_REGEX = re.compile('|'.join([
+        # Match " something(a" or " *something(a". Functions.
+        # Assumptions:
+        # - function definition from return type to one of its arguments is
+        #   all on one line
+        # - function definition line only contains alphanumeric, asterisk,
+        #   underscore, and open bracket
+        r".* \**(\w+) *\( *\w",
+        # Match "(*something)(".
+        r".*\( *\* *(\w+) *\) *\(",
+        # Match names of named data structures.
+        r"(?:typedef +)?(?:struct|union|enum) +(\w+)(?: *{)?$",
+        # Match names of typedef instances, after closing bracket.
+        r"}? *(\w+)[;[].*",
+    ]))
+    # The regex below is indented for clarity.
+    EXCLUSION_LINES = re.compile("|".join([
+        r"extern +\"C\"",
+        r"(typedef +)?(struct|union|enum)( *{)?$",
+        r"} *;?$",
+        r"$",
+        r"//",
+        r"#",
+    ]))
+
+    def parse_identifiers_in_file(self, header_file, identifiers):
+        """
+        Parse all lines of a header where a function/enum/struct/union/typedef
+        identifier is declared, based on some regex and heuristics. Highly
+        dependent on formatting style.
+
+        Append found matches to the list ``identifiers``.
+        """
+
+        with open(header_file, "r", encoding="utf-8") as header:
+            in_block_comment = False
+            # The previous line variable is used for concatenating lines
+            # when identifiers are formatted and spread across multiple
+            # lines.
+            previous_line = ""
+
+            for line_no, line in enumerate(header):
+                line, in_block_comment = \
+                    self.strip_comments_and_literals(line, in_block_comment)
+
+                if self.EXCLUSION_LINES.match(line):
+                    previous_line = ""
+                    continue
+
+                # If the line contains only space-separated alphanumeric
+                # characters (or underscore, asterisk, or open parenthesis),
+                # and nothing else, high chance it's a declaration that
+                # continues on the next line
+                if re.search(r"^([\w\*\(]+\s+)+$", line):
+                    previous_line += line
+                    continue
+
+                # If previous line seemed to start an unfinished declaration
+                # (as above), concat and treat them as one.
+                if previous_line:
+                    line = previous_line.strip() + " " + line.strip() + "\n"
+                    previous_line = ""
+
+                # Skip parsing if line has a space in front = heuristic to
+                # skip function argument lines (highly subject to formatting
+                # changes)
+                if line[0] == " ":
+                    continue
+
+                identifier = self.IDENTIFIER_REGEX.search(line)
+
+                if not identifier:
+                    continue
+
+                # Find the group that matched, and append it
+                for group in identifier.groups():
+                    if not group:
+                        continue
+
+                    identifiers.append(Match(
+                        header_file,
+                        line,
+                        line_no,
+                        identifier.span(),
+                        group))
+
     def parse_identifiers(self, include, exclude=None):
         """
         Parse all lines of a header where a function/enum/struct/union/typedef
@@ -469,99 +602,13 @@
 
         Returns a List of Match objects with identifiers.
         """
-        identifier_regex = re.compile(
-            # Match " something(a" or " *something(a". Functions.
-            # Assumptions:
-            # - function definition from return type to one of its arguments is
-            #   all on one line
-            # - function definition line only contains alphanumeric, asterisk,
-            #   underscore, and open bracket
-            r".* \**(\w+) *\( *\w|"
-            # Match "(*something)(".
-            r".*\( *\* *(\w+) *\) *\(|"
-            # Match names of named data structures.
-            r"(?:typedef +)?(?:struct|union|enum) +(\w+)(?: *{)?$|"
-            # Match names of typedef instances, after closing bracket.
-            r"}? *(\w+)[;[].*"
-        )
-        # The regex below is indented for clarity.
-        exclusion_lines = re.compile(
-            r"^("
-                r"extern +\"C\"|" # pylint: disable=bad-continuation
-                r"(typedef +)?(struct|union|enum)( *{)?$|"
-                r"} *;?$|"
-                r"$|"
-                r"//|"
-                r"#"
-            r")"
-        )
 
         files = self.get_files(include, exclude)
         self.log.debug("Looking for identifiers in {} files".format(len(files)))
 
         identifiers = []
         for header_file in files:
-            with open(header_file, "r", encoding="utf-8") as header:
-                in_block_comment = False
-                # The previous line variable is used for concatenating lines
-                # when identifiers are formatted and spread across multiple
-                # lines.
-                previous_line = ""
-
-                for line_no, line in enumerate(header):
-                    # Skip parsing this line if a block comment ends on it,
-                    # but don't skip if it has just started -- there is a chance
-                    # it ends on the same line.
-                    if re.search(r"/\*", line):
-                        in_block_comment = not in_block_comment
-                    if re.search(r"\*/", line):
-                        in_block_comment = not in_block_comment
-                        continue
-
-                    if in_block_comment:
-                        previous_line = ""
-                        continue
-
-                    if exclusion_lines.search(line):
-                        previous_line = ""
-                        continue
-
-                    # If the line contains only space-separated alphanumeric
-                    # characters (or underscore, asterisk, or, open bracket),
-                    # and nothing else, high chance it's a declaration that
-                    # continues on the next line
-                    if re.search(r"^([\w\*\(]+\s+)+$", line):
-                        previous_line += line
-                        continue
-
-                    # If previous line seemed to start an unfinished declaration
-                    # (as above), concat and treat them as one.
-                    if previous_line:
-                        line = previous_line.strip() + " " + line.strip() + "\n"
-                        previous_line = ""
-
-                    # Skip parsing if line has a space in front = heuristic to
-                    # skip function argument lines (highly subject to formatting
-                    # changes)
-                    if line[0] == " ":
-                        continue
-
-                    identifier = identifier_regex.search(line)
-
-                    if not identifier:
-                        continue
-
-                    # Find the group that matched, and append it
-                    for group in identifier.groups():
-                        if not group:
-                            continue
-
-                        identifiers.append(Match(
-                            header_file,
-                            line,
-                            line_no,
-                            identifier.span(),
-                            group))
+            self.parse_identifiers_in_file(header_file, identifiers)
 
         return identifiers
 
diff --git a/tests/scripts/generate_tls13_compat_tests.py b/tests/scripts/generate_tls13_compat_tests.py
index 07013ae..a6d2fe7 100755
--- a/tests/scripts/generate_tls13_compat_tests.py
+++ b/tests/scripts/generate_tls13_compat_tests.py
@@ -76,13 +76,14 @@
     Base class for generate server/client command.
     """
 
-    def __init__(self, ciphersuite, signature_algorithm, named_group):
+    def __init__(self, ciphersuite, signature_algorithm, named_group, compat_mode=True):
         self._ciphers = []
         self._sig_algs = []
         self._named_groups = []
         self.add_ciphersuites(ciphersuite)
         self.add_named_groups(named_group)
         self.add_signature_algorithms(signature_algorithm)
+        self._compat_mode = compat_mode
 
     # add_ciphersuites should not override by sub class
     def add_ciphersuites(self, *ciphersuites):
@@ -138,7 +139,10 @@
                 "-sigalgs {signature_algorithms}".format(
                     signature_algorithms=signature_algorithms),
                 "-groups {named_groups}".format(named_groups=named_groups)]
-        ret += ['-msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache']
+        ret += ['-msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache']
+        if not self._compat_mode:
+            ret += ['-no_middlebox']
+
         return ' '.join(ret)
 
     def pre_checks(self):
@@ -221,7 +225,10 @@
         priority_string_list = ['NONE'] + sorted(priority_string_list) + ['VERS-TLS1.3']
 
         priority_string = ':+'.join(priority_string_list)
-        priority_string += ':%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE'
+        priority_string += ':%NO_TICKETS'
+        if not self._compat_mode:
+            priority_string += [':%DISABLE_TLS13_COMPAT_MODE']
+
         ret += ['--priority={priority_string}'.format(
             priority_string=priority_string)]
         ret = ' '.join(ret)
@@ -271,8 +278,12 @@
     def pre_checks(self):
         ret = ['requires_config_enabled MBEDTLS_DEBUG_C',
                'requires_config_enabled MBEDTLS_SSL_CLI_C',
-               'requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL',
+               'requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3',
                'requires_config_disabled MBEDTLS_USE_PSA_CRYPTO']
+
+        if self._compat_mode:
+            ret += ['requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE']
+
         if 'rsa_pss_rsae_sha256' in self._sig_algs:
             ret.append(
                 'requires_config_enabled MBEDTLS_X509_RSASSA_PSS_SUPPORT')
diff --git a/tests/ssl-opt.sh b/tests/ssl-opt.sh
index d5e9e01..691c0e7 100755
--- a/tests/ssl-opt.sh
+++ b/tests/ssl-opt.sh
@@ -45,6 +45,7 @@
 : ${P_SRV:=../programs/ssl/ssl_server2}
 : ${P_CLI:=../programs/ssl/ssl_client2}
 : ${P_PXY:=../programs/test/udp_proxy}
+: ${P_QUERY:=../programs/test/query_compile_time_config}
 : ${OPENSSL_CMD:=openssl} # OPENSSL would conflict with the build system
 : ${GNUTLS_CLI:=gnutls-cli}
 : ${GNUTLS_SERV:=gnutls-serv}
@@ -194,10 +195,7 @@
 # testing. Skip non-boolean options (with something other than spaces
 # and a comment after "#define SYMBOL"). The variable contains a
 # space-separated list of symbols.
-CONFIGS_ENABLED=" $(<"$CONFIG_H" \
-                    sed -n 's!^ *#define  *\([A-Za-z][0-9A-Z_a-z]*\) *\(/*\)*!\1!p' |
-                    tr '\n' ' ')"
-
+CONFIGS_ENABLED=" $(echo `$P_QUERY -l` )"
 # Skip next test; use this macro to skip tests which are legitimate
 # in theory and expected to be re-introduced at some point, but
 # aren't expected to succeed at the moment due to problems outside
@@ -209,7 +207,7 @@
 # skip next test if the flag is not enabled in mbedtls_config.h
 requires_config_enabled() {
     case $CONFIGS_ENABLED in
-        *" $1 "*) :;;
+        *" $1"[\ =]*) :;;
         *) SKIP_NEXT="YES";;
     esac
 }
@@ -217,7 +215,7 @@
 # skip next test if the flag is enabled in mbedtls_config.h
 requires_config_disabled() {
     case $CONFIGS_ENABLED in
-        *" $1 "*) SKIP_NEXT="YES";;
+        *" $1"[\ =]*) SKIP_NEXT="YES";;
     esac
 }
 
@@ -1697,32 +1695,32 @@
 # Dummy TLS 1.3 test
 # Currently only checking that passing TLS 1.3 key exchange modes to
 # ssl_client2/ssl_server2 example programs works.
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 run_test    "TLS 1.3, key exchange mode parameter passing: PSK only" \
             "$P_SRV tls13_kex_modes=psk" \
             "$P_CLI tls13_kex_modes=psk" \
             0
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 run_test    "TLS 1.3, key exchange mode parameter passing: PSK-ephemeral only" \
             "$P_SRV tls13_kex_modes=psk_ephemeral" \
             "$P_CLI tls13_kex_modes=psk_ephemeral" \
             0
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 run_test    "TLS 1.3, key exchange mode parameter passing: Pure-ephemeral only" \
             "$P_SRV tls13_kex_modes=ephemeral" \
             "$P_CLI tls13_kex_modes=ephemeral" \
             0
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 run_test    "TLS 1.3, key exchange mode parameter passing: All ephemeral" \
             "$P_SRV tls13_kex_modes=ephemeral_all" \
             "$P_CLI tls13_kex_modes=ephemeral_all" \
             0
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 run_test    "TLS 1.3, key exchange mode parameter passing: All PSK" \
             "$P_SRV tls13_kex_modes=psk_all" \
             "$P_CLI tls13_kex_modes=psk_all" \
             0
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 run_test    "TLS 1.3, key exchange mode parameter passing: All" \
             "$P_SRV tls13_kex_modes=all" \
             "$P_CLI tls13_kex_modes=all" \
@@ -8769,7 +8767,6 @@
 
 # openssl feature tests: check if tls1.3 exists.
 requires_openssl_tls1_3
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
 run_test    "TLS 1.3: Test openssl tls1_3 feature" \
             "$O_NEXT_SRV -tls1_3 -msg" \
             "$O_NEXT_CLI -tls1_3 -msg" \
@@ -8781,7 +8778,6 @@
 requires_gnutls_tls1_3
 requires_gnutls_next_no_ticket
 requires_gnutls_next_disable_tls13_compat
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
 run_test    "TLS 1.3: Test gnutls tls1_3 feature" \
             "$G_NEXT_SRV --priority=NORMAL:-VERS-ALL:+VERS-TLS1.3:+CIPHER-ALL:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE --disable-client-cert " \
             "$G_NEXT_CLI localhost --priority=NORMAL:-VERS-ALL:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE -V" \
@@ -8792,7 +8788,7 @@
 # TLS1.3 test cases
 # TODO: remove or rewrite this test case if #4832 is resolved.
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 skip_handshake_stage_check
 run_test    "TLS 1.3: Not supported version check: tls12 and tls13" \
             "$P_SRV debug_level=1 min_version=tls12 max_version=tls13" \
@@ -8804,31 +8800,34 @@
             -c "Hybrid TLS 1.2 + TLS 1.3 configurations are not yet supported"
 
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 run_test    "TLS 1.3: handshake dispatch test: tls13 only" \
             "$P_SRV debug_level=2 min_version=tls13 max_version=tls13" \
             "$P_CLI debug_level=2 min_version=tls13 max_version=tls13" \
             1 \
-            -s "tls13 server state: 0"     \
-            -c "tls13 client state: 0"
+            -s "tls13 server state: MBEDTLS_SSL_HELLO_REQUEST"     \
+            -c "tls13 client state: MBEDTLS_SSL_HELLO_REQUEST"
 
 requires_openssl_tls1_3
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
+requires_config_enabled MBEDTLS_DEBUG_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "TLS 1.3: minimal feature sets - openssl" \
-            "$O_NEXT_SRV -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+            "$O_NEXT_SRV -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
             "$P_CLI debug_level=3 min_version=tls13 max_version=tls13" \
             0 \
-            -c "tls13 client state: 0"     \
-            -c "tls13 client state: 2"     \
-            -c "tls13 client state: 19"    \
-            -c "tls13 client state: 5"     \
-            -c "tls13 client state: 3"     \
-            -c "tls13 client state: 9"     \
-            -c "tls13 client state: 13"    \
-            -c "tls13 client state: 11"    \
-            -c "tls13 client state: 14"    \
-            -c "tls13 client state: 15"    \
+            -c "tls13 client state: MBEDTLS_SSL_HELLO_REQUEST(0)"               \
+            -c "tls13 client state: MBEDTLS_SSL_SERVER_HELLO(2)"                \
+            -c "tls13 client state: MBEDTLS_SSL_ENCRYPTED_EXTENSIONS(19)"       \
+            -c "tls13 client state: MBEDTLS_SSL_CERTIFICATE_REQUEST(5)"         \
+            -c "tls13 client state: MBEDTLS_SSL_SERVER_CERTIFICATE(3)"          \
+            -c "tls13 client state: MBEDTLS_SSL_CERTIFICATE_VERIFY(9)"          \
+            -c "tls13 client state: MBEDTLS_SSL_SERVER_FINISHED(13)"            \
+            -c "tls13 client state: MBEDTLS_SSL_CLIENT_FINISHED(11)"            \
+            -c "tls13 client state: MBEDTLS_SSL_FLUSH_BUFFERS(14)"              \
+            -c "tls13 client state: MBEDTLS_SSL_HANDSHAKE_WRAPUP(15)"           \
             -c "<= ssl_tls13_process_server_hello" \
             -c "server hello, chosen ciphersuite: ( 1301 ) - TLS1-3-AES-128-GCM-SHA256" \
             -c "ECDH curve: x25519"         \
@@ -8843,24 +8842,26 @@
 
 requires_gnutls_tls1_3
 requires_gnutls_next_no_ticket
-requires_gnutls_next_disable_tls13_compat
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
+requires_config_enabled MBEDTLS_DEBUG_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "TLS 1.3: minimal feature sets - gnutls" \
-            "$G_NEXT_SRV --debug=4 --priority=NORMAL:-VERS-ALL:+VERS-TLS1.3:+CIPHER-ALL:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE --disable-client-cert" \
+            "$G_NEXT_SRV --debug=4 --priority=NORMAL:-VERS-ALL:+VERS-TLS1.3:+CIPHER-ALL:%NO_TICKETS --disable-client-cert" \
             "$P_CLI debug_level=3 min_version=tls13 max_version=tls13" \
             0 \
-            -s "SERVER HELLO was queued"   \
-            -c "tls13 client state: 0"     \
-            -c "tls13 client state: 2"     \
-            -c "tls13 client state: 19"    \
-            -c "tls13 client state: 5"     \
-            -c "tls13 client state: 3"     \
-            -c "tls13 client state: 9"     \
-            -c "tls13 client state: 13"    \
-            -c "tls13 client state: 11"    \
-            -c "tls13 client state: 14"    \
-            -c "tls13 client state: 15"    \
+            -s "SERVER HELLO was queued"    \
+            -c "tls13 client state: MBEDTLS_SSL_HELLO_REQUEST(0)"               \
+            -c "tls13 client state: MBEDTLS_SSL_SERVER_HELLO(2)"                \
+            -c "tls13 client state: MBEDTLS_SSL_ENCRYPTED_EXTENSIONS(19)"       \
+            -c "tls13 client state: MBEDTLS_SSL_CERTIFICATE_REQUEST(5)"         \
+            -c "tls13 client state: MBEDTLS_SSL_SERVER_CERTIFICATE(3)"          \
+            -c "tls13 client state: MBEDTLS_SSL_CERTIFICATE_VERIFY(9)"          \
+            -c "tls13 client state: MBEDTLS_SSL_SERVER_FINISHED(13)"            \
+            -c "tls13 client state: MBEDTLS_SSL_CLIENT_FINISHED(11)"            \
+            -c "tls13 client state: MBEDTLS_SSL_FLUSH_BUFFERS(14)"              \
+            -c "tls13 client state: MBEDTLS_SSL_HANDSHAKE_WRAPUP(15)"           \
             -c "<= ssl_tls13_process_server_hello" \
             -c "server hello, chosen ciphersuite: ( 1301 ) - TLS1-3-AES-128-GCM-SHA256" \
             -c "ECDH curve: x25519"         \
@@ -8873,7 +8874,9 @@
             -c "<= parse finished message" \
             -c "HTTP/1.0 200 OK"
 
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_DEBUG_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
 skip_handshake_stage_check
 requires_gnutls_tls1_3
 run_test    "TLS 1.3:Not supported version check:gnutls: srv max TLS 1.0" \
@@ -8885,7 +8888,9 @@
             -S "Version: TLS1.0" \
             -C "Protocol is TLSv1.0"
 
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_DEBUG_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
 skip_handshake_stage_check
 requires_gnutls_tls1_3
 run_test    "TLS 1.3:Not supported version check:gnutls: srv max TLS 1.1" \
@@ -8897,7 +8902,9 @@
             -S "Version: TLS1.1" \
             -C "Protocol is TLSv1.1"
 
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_DEBUG_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
 skip_handshake_stage_check
 requires_gnutls_tls1_3
 run_test    "TLS 1.3:Not supported version check:gnutls: srv max TLS 1.2" \
@@ -8909,7 +8916,9 @@
             -S "Version: TLS1.2" \
             -C "Protocol is TLSv1.2"
 
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_DEBUG_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
 skip_handshake_stage_check
 requires_openssl_next
 run_test    "TLS 1.3:Not supported version check:openssl: srv max TLS 1.0" \
@@ -8921,7 +8930,9 @@
             -S "Version: TLS1.0" \
             -C "Protocol  : TLSv1.0"
 
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_DEBUG_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
 skip_handshake_stage_check
 requires_openssl_next
 run_test    "TLS 1.3:Not supported version check:openssl: srv max TLS 1.1" \
@@ -8933,7 +8944,9 @@
             -S "Version: TLS1.1" \
             -C "Protocol  : TLSv1.1"
 
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_DEBUG_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
 skip_handshake_stage_check
 requires_openssl_next
 run_test    "TLS 1.3:Not supported version check:openssl: srv max TLS 1.2" \
@@ -8946,30 +8959,38 @@
             -C "Protocol  : TLSv1.2"
 
 requires_openssl_tls1_3
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
+requires_config_enabled MBEDTLS_DEBUG_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "TLS 1.3: CertificateRequest check - openssl" \
-            "$O_NEXT_SRV -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache -Verify 10" \
+            "$O_NEXT_SRV -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache -Verify 10" \
             "$P_CLI debug_level=4 force_version=tls13 " \
             1 \
             -c "CertificateRequest not supported"
 
 requires_gnutls_tls1_3
 requires_gnutls_next_no_ticket
-requires_gnutls_next_disable_tls13_compat
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
+requires_config_enabled MBEDTLS_DEBUG_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "TLS 1.3: CertificateRequest check - gnutls" \
-            "$G_NEXT_SRV --debug=4 --priority=NORMAL:-VERS-ALL:+VERS-TLS1.3:+CIPHER-ALL:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+            "$G_NEXT_SRV --debug=4 --priority=NORMAL:-VERS-ALL:+VERS-TLS1.3:+CIPHER-ALL:%NO_TICKETS" \
             "$P_CLI debug_level=3 min_version=tls13 max_version=tls13" \
             1 \
             -c "CertificateRequest not supported"
 
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
+requires_config_enabled MBEDTLS_DEBUG_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
 requires_openssl_tls1_3
 run_test    "TLS 1.3: HelloRetryRequest check - openssl" \
-            "$O_NEXT_SRV -ciphersuites TLS_AES_256_GCM_SHA384  -sigalgs ecdsa_secp256r1_sha256 -groups P-256 -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+            "$O_NEXT_SRV -ciphersuites TLS_AES_256_GCM_SHA384  -sigalgs ecdsa_secp256r1_sha256 -groups P-256 -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
             "$P_CLI debug_level=4 force_version=tls13" \
             1 \
             -c "received HelloRetryRequest message" \
@@ -8978,22 +8999,76 @@
 
 requires_gnutls_tls1_3
 requires_gnutls_next_no_ticket
-requires_gnutls_next_disable_tls13_compat
-requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
+requires_config_enabled MBEDTLS_DEBUG_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
 requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "TLS 1.3: HelloRetryRequest check - gnutls" \
-            "$G_NEXT_SRV -d 4 --priority=NONE:+GROUP-SECP256R1:+AES-256-GCM:+SHA384:+AEAD:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE" \
+            "$G_NEXT_SRV -d 4 --priority=NONE:+GROUP-SECP256R1:+AES-256-GCM:+SHA384:+AEAD:+SIGN-ECDSA-SECP256R1-SHA256:+VERS-TLS1.3:%NO_TICKETS" \
             "$P_CLI debug_level=4 force_version=tls13" \
             1 \
             -c "received HelloRetryRequest message" \
             -c "HRR not supported" \
             -c "Last error was: -0x6E00 - SSL - The handshake negotiation failed" \
             -s "HELLO RETRY REQUEST was queued"
+
 for i in $(ls opt-testcases/*.sh)
 do
     . $i
 done
 
+requires_openssl_tls1_3
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_disabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
+requires_config_enabled MBEDTLS_DEBUG_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
+requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+run_test    "TLS 1.3 m->O both peers do not support middlebox compatibility" \
+            "$O_NEXT_SRV -msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache" \
+            "$P_CLI debug_level=3 min_version=tls13 max_version=tls13" \
+            0 \
+            -c "HTTP/1.0 200 ok"
+
+requires_openssl_tls1_3
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_disabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
+requires_config_enabled MBEDTLS_DEBUG_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
+requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+run_test    "TLS 1.3 m->O server with middlebox compat support, not client" \
+            "$O_NEXT_SRV -msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache" \
+            "$P_CLI debug_level=3 min_version=tls13 max_version=tls13" \
+            1 \
+            -c "ChangeCipherSpec invalid in TLS 1.3 without compatibility mode"
+
+requires_gnutls_tls1_3
+requires_gnutls_next_no_ticket
+requires_gnutls_next_disable_tls13_compat
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_disabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
+requires_config_enabled MBEDTLS_DEBUG_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
+requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+run_test    "TLS 1.3 m->G both peers do not support middlebox compatibility" \
+            "$G_NEXT_SRV --priority=NORMAL:-VERS-ALL:+VERS-TLS1.3:+CIPHER-ALL:%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE --disable-client-cert" \
+            "$P_CLI debug_level=3 min_version=tls13 max_version=tls13" \
+            0 \
+            -c "HTTP/1.0 200 OK"
+
+requires_gnutls_tls1_3
+requires_gnutls_next_no_ticket
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_disabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
+requires_config_enabled MBEDTLS_DEBUG_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
+requires_config_disabled MBEDTLS_USE_PSA_CRYPTO
+run_test    "TLS 1.3 m->G server with middlebox compat support, not client" \
+            "$G_NEXT_SRV --priority=NORMAL:-VERS-ALL:+VERS-TLS1.3:+CIPHER-ALL:%NO_TICKETS --disable-client-cert" \
+            "$P_CLI debug_level=3 min_version=tls13 max_version=tls13" \
+            1 \
+            -c "ChangeCipherSpec invalid in TLS 1.3 without compatibility mode"
+
 # Test heap memory usage after handshake
 requires_config_enabled MBEDTLS_MEMORY_DEBUG
 requires_config_enabled MBEDTLS_MEMORY_BUFFER_ALLOC_C
diff --git a/tests/suites/test_suite_base64.function b/tests/suites/test_suite_base64.function
index 67fbb67..7baa3d5 100644
--- a/tests/suites/test_suite_base64.function
+++ b/tests/suites/test_suite_base64.function
@@ -1,6 +1,7 @@
 /* BEGIN_HEADER */
 #include "mbedtls/base64.h"
-#include "base64_invasive.h"
+#include "constant_time_internal.h"
+#include "constant_time_invasive.h"
 #include <test/constant_flow.h>
 
 #if defined(MBEDTLS_TEST_HOOKS)
@@ -24,7 +25,7 @@
     {
         mbedtls_test_set_step( c );
         TEST_CF_SECRET( &c, sizeof( c ) );
-        unsigned char m = mbedtls_base64_mask_of_range( low, high, c );
+        unsigned char m = mbedtls_ct_uchar_mask_of_range( low, high, c );
         TEST_CF_PUBLIC( &c, sizeof( c ) );
         TEST_CF_PUBLIC( &m, sizeof( m ) );
         if( low <= c && c <= high )
@@ -42,7 +43,7 @@
     {
         mbedtls_test_set_step( value );
         TEST_CF_SECRET( &value, sizeof( value ) );
-        unsigned char digit = mbedtls_base64_enc_char( value );
+        unsigned char digit = mbedtls_ct_base64_enc_char( value );
         TEST_CF_PUBLIC( &value, sizeof( value ) );
         TEST_CF_PUBLIC( &digit, sizeof( digit ) );
         TEST_EQUAL( digit, base64_digits[value] );
@@ -66,7 +67,7 @@
         else
             expected = p - base64_digits;
         TEST_CF_SECRET( &c, sizeof( c ) );
-        signed char actual = mbedtls_base64_dec_value( c );
+        signed char actual = mbedtls_ct_base64_dec_value( c );
         TEST_CF_PUBLIC( &c, sizeof( c ) );
         TEST_CF_PUBLIC( &actual, sizeof( actual ) );
         TEST_EQUAL( actual, expected );
diff --git a/tests/suites/test_suite_cipher.function b/tests/suites/test_suite_cipher.function
index 2efc434..fd2985b 100644
--- a/tests/suites/test_suite_cipher.function
+++ b/tests/suites/test_suite_cipher.function
@@ -198,9 +198,10 @@
     (void)valid_mode; /* In some configurations this is unused */
 
     mbedtls_cipher_init( &valid_ctx );
-    mbedtls_cipher_setup( &valid_ctx, valid_info );
     mbedtls_cipher_init( &invalid_ctx );
 
+    TEST_ASSERT( mbedtls_cipher_setup( &valid_ctx, valid_info ) == 0 );
+
     /* mbedtls_cipher_setup() */
     TEST_ASSERT( mbedtls_cipher_setup( &valid_ctx, NULL ) ==
                  MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
diff --git a/tests/suites/test_suite_mps.function b/tests/suites/test_suite_mps.function
index 9df8a3c..c40c50e 100644
--- a/tests/suites/test_suite_mps.function
+++ b/tests/suites/test_suite_mps.function
@@ -20,7 +20,7 @@
 /* END_HEADER */
 
 /* BEGIN_DEPENDENCIES
- * depends_on:MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+ * depends_on:MBEDTLS_SSL_PROTO_TLS1_3
  * END_DEPENDENCIES
  */
 
diff --git a/tests/suites/test_suite_psa_crypto.data b/tests/suites/test_suite_psa_crypto.data
index 7ed7830..c45f9f0 100644
--- a/tests/suites/test_suite_psa_crypto.data
+++ b/tests/suites/test_suite_psa_crypto.data
@@ -2835,6 +2835,78 @@
 depends_on:MBEDTLS_CHACHA20_C
 aead_encrypt_decrypt:PSA_KEY_TYPE_CHACHA20:"808182838485868788898a8b8c8d8e8f909192939495969798999a9b9c9d9e9f":PSA_ALG_STREAM_CIPHER:"":"":"":PSA_ERROR_NOT_SUPPORTED
 
+PSA Multipart AEAD encrypt: AES - CCM, 23 bytes (lengths set)
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_encrypt:PSA_KEY_TYPE_AES:"D7828D13B2B0BDC325A76236DF93CC6B":PSA_ALG_CCM:"00412B4EA9CDBE3C9696766CFA":"0BE1A88BACE018B1":"08E8CF97D820EA258460E96AD9CF5289054D895CEAC47C":1:"4CB97F86A2A4689A877947AB8091EF5386A6FFBDD080F8120333D1FCB691F3406CBF531F83A4D8"
+
+PSA Multipart AEAD encrypt: AES - CCM, 24 bytes (lengths set)
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_encrypt:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_CCM:"48c0906930561e0ab0ef4cd972":"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"4535d12b4377928a7c0a61c9f825a48671ea05910748c8ef":1:"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd10b6d80e8bf80f4a46cab06d4313f0db9be9"
+
+PSA Multipart AEAD encrypt: AES - CCM, 24 bytes, T = 4 (lengths set)
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_encrypt:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM,4):"48c0906930561e0ab0ef4cd972":"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"4535d12b4377928a7c0a61c9f825a48671ea05910748c8ef":1:"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd10b6643b4f39"
+
+PSA Multipart AEAD encrypt: AES - CCM, 24 bytes, T = 6 (lengths set)
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_encrypt:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM,6):"48c0906930561e0ab0ef4cd972":"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"4535d12b4377928a7c0a61c9f825a48671ea05910748c8ef":1:"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd10b63fdffcd729bc"
+
+PSA Multipart AEAD encrypt: AES - CCM, 24 bytes, T = 8 (lengths set)
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_encrypt:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM,8):"48c0906930561e0ab0ef4cd972":"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"4535d12b4377928a7c0a61c9f825a48671ea05910748c8ef":1:"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd10b64cf2c3bf5f220776"
+
+PSA Multipart AEAD encrypt: AES - CCM, 24 bytes, T = 10 (lengths set)
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_encrypt:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM,10):"48c0906930561e0ab0ef4cd972":"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"4535d12b4377928a7c0a61c9f825a48671ea05910748c8ef":1:"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd10b69613343621327defd18e"
+
+PSA Multipart AEAD encrypt: AES - CCM, 24 bytes, T = 12 (lengths set)
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_encrypt:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM,12):"48c0906930561e0ab0ef4cd972":"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"4535d12b4377928a7c0a61c9f825a48671ea05910748c8ef":1:"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd10b69a2e5d8faee3138fa5cf9846"
+
+PSA Multipart AEAD encrypt: AES - CCM, 24 bytes, T = 14 (lengths set)
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_encrypt:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM,14):"48c0906930561e0ab0ef4cd972":"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"4535d12b4377928a7c0a61c9f825a48671ea05910748c8ef":1:"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd10b6c99af01cdb6aa76df73c8646c27f"
+
+PSA Multipart AEAD encrypt: AES - CCM, 24 bytes, T = 16 (lengths set)
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_encrypt:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM,16):"48c0906930561e0ab0ef4cd972":"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"4535d12b4377928a7c0a61c9f825a48671ea05910748c8ef":1:"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd10b6d80e8bf80f4a46cab06d4313f0db9be9"
+
+PSA Multipart AEAD decrypt: AES - CCM, 39 bytes (lengths set)
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_decrypt:PSA_KEY_TYPE_AES:"D7828D13B2B0BDC325A76236DF93CC6B":PSA_ALG_CCM:"00412B4EA9CDBE3C9696766CFA":"0BE1A88BACE018B1":"4CB97F86A2A4689A877947AB8091EF5386A6FFBDD080F8120333D1FCB691F3406CBF531F83A4D8":1:"08E8CF97D820EA258460E96AD9CF5289054D895CEAC47C"
+
+PSA Multipart AEAD decrypt, AES - CCM, 40 bytes (lengths set)
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_decrypt:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_CCM:"48c0906930561e0ab0ef4cd972":"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd10b6d80e8bf80f4a46cab06d4313f0db9be9":1:"4535d12b4377928a7c0a61c9f825a48671ea05910748c8ef"
+
+PSA Multipart AEAD decrypt: AES - CCM, 24 bytes, T = 4 (lengths set)
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_decrypt:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM,4):"48c0906930561e0ab0ef4cd972":"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd10b6643b4f39":1:"4535d12b4377928a7c0a61c9f825a48671ea05910748c8ef"
+
+PSA Multipart AEAD decrypt: AES - CCM, 24 bytes, T = 6 (lengths set)
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_decrypt:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM,6):"48c0906930561e0ab0ef4cd972":"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd10b63fdffcd729bc":1:"4535d12b4377928a7c0a61c9f825a48671ea05910748c8ef"
+
+PSA Multipart AEAD decrypt: AES - CCM, 24 bytes, T = 8 (lengths set)
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_decrypt:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM,8):"48c0906930561e0ab0ef4cd972":"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd10b64cf2c3bf5f220776":1:"4535d12b4377928a7c0a61c9f825a48671ea05910748c8ef"
+
+PSA Multipart AEAD decrypt: AES - CCM, 24 bytes, T = 10 (lengths set)
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_decrypt:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM,10):"48c0906930561e0ab0ef4cd972":"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd10b69613343621327defd18e":1:"4535d12b4377928a7c0a61c9f825a48671ea05910748c8ef"
+
+PSA Multipart AEAD decrypt: AES - CCM, 24 bytes, T = 12 (lengths set)
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_decrypt:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM,12):"48c0906930561e0ab0ef4cd972":"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd10b69a2e5d8faee3138fa5cf9846":1:"4535d12b4377928a7c0a61c9f825a48671ea05910748c8ef"
+
+PSA Multipart AEAD decrypt: AES - CCM, 24 bytes, T = 14 (lengths set)
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_decrypt:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM,14):"48c0906930561e0ab0ef4cd972":"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd10b6c99af01cdb6aa76df73c8646c27f":1:"4535d12b4377928a7c0a61c9f825a48671ea05910748c8ef"
+
+PSA Multipart AEAD decrypt: AES - CCM, 24 bytes, T = 16 (lengths set)
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_decrypt:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM,16):"48c0906930561e0ab0ef4cd972":"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd10b6d80e8bf80f4a46cab06d4313f0db9be9":1:"4535d12b4377928a7c0a61c9f825a48671ea05910748c8ef"
+
 PSA Multipart AEAD encrypt, AES-GCM, 128 bytes #1
 depends_on:PSA_WANT_ALG_GCM:PSA_WANT_KEY_TYPE_AES
 aead_multipart_encrypt:PSA_KEY_TYPE_AES:"a0ec7b0052541d9e9c091fb7fc481409":PSA_ALG_GCM:"00e440846db73a490573deaf3728c94f":"a3cfcb832e935eb5bc3812583b3a1b2e82920c07fda3668a35d939d8f11379bb606d39e6416b2ef336fffb15aec3f47a71e191f4ff6c56ff15913562619765b26ae094713d60bab6ab82bfc36edaaf8c7ce2cf5906554dcc5933acdb9cb42c1d24718efdc4a09256020b024b224cfe602772bd688c6c8f1041a46f7ec7d51208":"5431d93278c35cfcd7ffa9ce2de5c6b922edffd5055a9eaa5b54cae088db007cf2d28efaf9edd1569341889073e87c0a88462d77016744be62132fd14a243ed6e30e12cd2f7d08a8daeec161691f3b27d4996df8745d74402ee208e4055615a8cb069d495cf5146226490ac615d7b17ab39fb4fdd098e4e7ee294d34c1312826":0:"3b6de52f6e582d317f904ee768895bd4d0790912efcf27b58651d0eb7eb0b2f07222c6ffe9f7e127d98ccb132025b098a67dc0ec0083235e9f83af1ae1297df4319547cbcb745cebed36abc1f32a059a05ede6c00e0da097521ead901ad6a73be20018bda4c323faa135169e21581e5106ac20853642e9d6b17f1dd925c872814365847fe0b7b7fbed325953df344a96"
@@ -3267,6 +3339,46 @@
 depends_on:PSA_WANT_ALG_CHACHA20_POLY1305:PSA_WANT_KEY_TYPE_CHACHA20
 aead_multipart_decrypt:PSA_KEY_TYPE_CHACHA20:"808182838485868788898a8b8c8d8e8f909192939495969798999a9b9c9d9e9f":PSA_ALG_CHACHA20_POLY1305:"070000004041424344454647":"":"a0784d7a4716f3feb4f64e7f4b39bf04":1:""
 
+PSA Multipart AEAD verify: AES - CCM, invalid signature
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_verify:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_CCM:"48c0906930561e0ab0ef4cd972":"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26d56961c035a7e452cce61bc6ee220d77b3f94d18fd10b6d80e8bf80f4a46cab06d4313f0db9be9":"7c0a61c9f825a48671ea05910748c8ef":1:PSA_ERROR_INVALID_SIGNATURE
+
+PSA Multipart AEAD verify: AES - CCM, invalid signature, T = 4
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_verify:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM,4):"48c0906930561e0ab0ef4cd972":"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd10b6643b4f38":"0748c8ef":1:PSA_ERROR_INVALID_SIGNATURE
+
+PSA Multipart AEAD verify: AES - CCM, T = 4, tag is truncated tag for T = 16
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_verify:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM,4):"48c0906930561e0ab0ef4cd972":"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26c56961c035a7e452cce61bc6ee220d":"0748c8ef":1:PSA_ERROR_INVALID_SIGNATURE
+
+PSA Multipart AEAD verify: AES - CCM, invalid tag length 0
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_verify:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM,0):"48c0906930561e0ab0ef4cd972":"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd10b6":"":1:PSA_ERROR_INVALID_ARGUMENT
+
+PSA Multipart AEAD verify: AES - CCM, invalid tag length 2
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_verify:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM,2):"48c0906930561e0ab0ef4cd972":"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd10b6":"c8ef":1:PSA_ERROR_INVALID_ARGUMENT
+
+PSA Multipart AEAD verify: AES - CCM, invalid tag length 15
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_verify:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM,15):"48c0906930561e0ab0ef4cd972":"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd10b6":"0a61c9f825a48671ea05910748c8ef":1:PSA_ERROR_INVALID_ARGUMENT
+
+PSA Multipart AEAD verify: AES - CCM, T = 16, but passing 15 bytes
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_verify:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_CCM:"48c0906930561e0ab0ef4cd972":"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd10b6":"0a61c9f825a48671ea05910748c8ef":1:PSA_ERROR_INVALID_SIGNATURE
+
+PSA Multipart AEAD verify: AES - CCM, T = 16, but passing 17 bytes
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_verify:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_CCM:"48c0906930561e0ab0ef4cd972":"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd10b6":"532b0a61c9f825a48671ea05910748c8ef":1:PSA_ERROR_INVALID_SIGNATURE
+
+PSA Multipart AEAD verify: AES - CCM, T = 16 but passing 0 bytes (valid buffer)
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_verify:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_CCM:"48c0906930561e0ab0ef4cd972":"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd10b6":"":1:PSA_ERROR_INVALID_SIGNATURE
+
+PSA Multipart AEAD verify: AES - CCM, T = 16 but passing 0 bytes (NULL buffer)
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_verify:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_CCM:"48c0906930561e0ab0ef4cd972":"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd10b6":"":0:PSA_ERROR_INVALID_SIGNATURE
+
 PSA Multipart AEAD verify, AES - GCM, invalid signature
 depends_on:PSA_WANT_ALG_GCM:PSA_WANT_KEY_TYPE_AES
 aead_multipart_verify:PSA_KEY_TYPE_AES:"fe96eab10ff48c7942025422583d0377":PSA_ALG_GCM:"97ce3f848276783599c6875de324361e":"127628b6dcbce6fc8a8ef60798eb67b2088415635119697d20bb878c24d9c6f9c29e148521cb5e0feff892c7855d4f1c0bfb32ad33420976714dce87a0bbc18e4378bd1ef35197d0ca73051148f1199010f63caf122df5f71ad8d9c71df3eb2fbe3b2529d0ba657570358d3776f687bdb9c96d5e0e9e00c4b42d5d7a268d6a08":"12195120056ca3cac70d583603a476821bac6c57c9733b81cfb83538dc9e850f8bdf46065069591c23ebcbc6d1e2523375fb7efc80c09507fa25477ed07cee54fc4eb90168b3ef988f651fc40652474a644b1b311decf899660aef2347bb081af48950f06ebf799911e37120de94c55c20e5f0a77119be06e2b6e557f872fa0f":"6bac793bdc2190a195122c98544ccf56":1:PSA_ERROR_INVALID_SIGNATURE
@@ -3299,6 +3411,22 @@
 depends_on:PSA_WANT_ALG_CHACHA20_POLY1305:PSA_WANT_KEY_TYPE_CHACHA20
 aead_multipart_verify:PSA_KEY_TYPE_CHACHA20:"808182838485868788898a8b8c8d8e8f909192939495969798999a9b9c9d9e9f":PSA_ALG_CHACHA20_POLY1305:"070000004041424344454647":"50515253c0c1c2c3c4c5c6c7":"d31a8d34648e60db7b86afbc53ef7ec2a4aded51296e08fea9e2b5a736ee62d63dbea45e8ca9671282fafb69da92728b1a71de0a9e060b2905d6a5b67ecd3b3692ddbd7f2d778b8c9803aee328091b58fab324e4fad675945585808b4831d7bc3ff4def08e4b7a9de576d26586cec64b6116":"1ae10b594f09e26a7e902ecbd0600690":1:PSA_ERROR_INVALID_SIGNATURE
 
+PSA Multipart Nonce Generation: AES - CCM, NONCE = (Req 13 / Expect 13)
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_generate_nonce:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_CCM:13:13:"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd10b6":PSA_SUCCESS
+
+PSA Multipart Nonce Generation: AES - CCM, NONCE = (Req 12 / Expect 0)
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_generate_nonce:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_CCM:12:0:"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd10b6":PSA_ERROR_BUFFER_TOO_SMALL
+
+PSA Multipart Nonce Generation: AES - CCM, NONCE = (Req 0 / Expect 0)
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_generate_nonce:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_CCM:0:0:"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd10b6":PSA_ERROR_BUFFER_TOO_SMALL
+
+PSA Multipart Nonce Generation: AES - CCM, NONCE = (Req 16 / Expect 13)
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_generate_nonce:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_CCM:16:13:"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd10b6":PSA_SUCCESS
+
 PSA Multipart Nonce Generation, AES - GCM, NONCE = (Req 12 / Expect 12)
 depends_on:PSA_WANT_ALG_GCM:PSA_WANT_KEY_TYPE_AES
 aead_multipart_generate_nonce:PSA_KEY_TYPE_AES:"aa740abfadcda779220d3b406c5d7ec09a77fe9d94104539":PSA_ALG_GCM:12:12:"290322092d57479e20f6281e331d95a9":"e7fb0631eebf9bdba87045b33650c4ce":PSA_SUCCESS
@@ -3331,11 +3459,35 @@
 depends_on:PSA_WANT_ALG_CHACHA20_POLY1305:PSA_WANT_KEY_TYPE_CHACHA20
 aead_multipart_generate_nonce:PSA_KEY_TYPE_CHACHA20:"808182838485868788898a8b8c8d8e8f909192939495969798999a9b9c9d9e9f":PSA_ALG_CHACHA20_POLY1305:16:12:"":"":PSA_SUCCESS
 
-PSA Multipart Set Nonce, AES - GCM, NONCE = 0 (NULL)
+PSA Multipart Set Nonce: AES - CCM, NONCE = 0 (NULL)
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_set_nonce:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_CCM:0:"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd10b6":PSA_ERROR_INVALID_ARGUMENT
+
+PSA Multipart Set Nonce: AES - CCM, NONCE = 0 (NON-NULL)
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_set_nonce:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_CCM:-1:"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd10b6":PSA_ERROR_INVALID_ARGUMENT
+
+PSA Multipart Set Nonce: AES - CCM, NONCE = 6 (too small)
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_set_nonce:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_CCM:6:"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd10b6":PSA_ERROR_INVALID_ARGUMENT
+
+PSA Multipart Set Nonce: AES - CCM, NONCE = 14 (too long)
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_set_nonce:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_CCM:14:"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd10b6":PSA_ERROR_INVALID_ARGUMENT
+
+PSA Multipart Set Nonce: AES - CCM_8, NONCE = 6 (too small)
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_set_nonce:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM,8):6:"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd10b6":PSA_ERROR_INVALID_ARGUMENT
+
+PSA Multipart Set Nonce: AES - CCM_8, NONCE = 14 (too long)
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_set_nonce:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM,8):14:"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd10b6":PSA_ERROR_INVALID_ARGUMENT
+
+PSA Multipart Set Nonce, AES - GCM, NONCE = 0 (NULL) (too small)
 depends_on:PSA_WANT_ALG_GCM:PSA_WANT_KEY_TYPE_AES
 aead_multipart_set_nonce:PSA_KEY_TYPE_AES:"aa740abfadcda779220d3b406c5d7ec09a77fe9d94104539":PSA_ALG_GCM:0:"":"":PSA_ERROR_INVALID_ARGUMENT
 
-PSA Multipart Set Nonce, AES - GCM, NONCE = 0 (Non-NULL)
+PSA Multipart Set Nonce, AES - GCM, NONCE = 0 (Non-NULL) (too small)
 depends_on:PSA_WANT_ALG_GCM:PSA_WANT_KEY_TYPE_AES
 aead_multipart_set_nonce:PSA_KEY_TYPE_AES:"aa740abfadcda779220d3b406c5d7ec09a77fe9d94104539":PSA_ALG_GCM:-1:"":"":PSA_ERROR_INVALID_ARGUMENT
 
@@ -3347,11 +3499,11 @@
 depends_on:PSA_WANT_ALG_GCM:PSA_WANT_KEY_TYPE_AES
 aead_multipart_set_nonce:PSA_KEY_TYPE_AES:"aa740abfadcda779220d3b406c5d7ec09a77fe9d94104539":PSA_ALG_GCM:20:"290322092d57479e20f6281e331d95a9":"e7fb0631eebf9bdba87045b33650c4ce":PSA_SUCCESS
 
-PSA Multipart Set Nonce, AES - GCM_12, NONCE = 0 (NULL)
+PSA Multipart Set Nonce, AES - GCM_12, NONCE = 0 (NULL) (too small)
 depends_on:PSA_WANT_ALG_GCM:PSA_WANT_KEY_TYPE_AES
 aead_multipart_set_nonce:PSA_KEY_TYPE_AES:"aa740abfadcda779220d3b406c5d7ec09a77fe9d94104539":PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_GCM,12):0:"":"":PSA_ERROR_INVALID_ARGUMENT
 
-PSA Multipart Set Nonce, AES - GCM_12, NONCE = 0 (Non-NULL)
+PSA Multipart Set Nonce, AES - GCM_12, NONCE = 0 (Non-NULL) (too small)
 depends_on:PSA_WANT_ALG_GCM:PSA_WANT_KEY_TYPE_AES
 aead_multipart_set_nonce:PSA_KEY_TYPE_AES:"aa740abfadcda779220d3b406c5d7ec09a77fe9d94104539":PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_GCM,12):-1:"":"":PSA_ERROR_INVALID_ARGUMENT
 
@@ -3363,7 +3515,7 @@
 depends_on:PSA_WANT_ALG_GCM:PSA_WANT_KEY_TYPE_AES
 aead_multipart_set_nonce:PSA_KEY_TYPE_AES:"aa740abfadcda779220d3b406c5d7ec09a77fe9d94104539":PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_GCM,12):20:"290322092d57479e20f6281e331d95a9":"e7fb0631eebf9bdba87045b33650c4ce":PSA_SUCCESS
 
-PSA Multipart Set Nonce: ChaCha20 - Poly1305, NONCE = 11
+PSA Multipart Set Nonce: ChaCha20 - Poly1305, NONCE = 11 (too small)
 depends_on:PSA_WANT_ALG_CHACHA20_POLY1305:PSA_WANT_KEY_TYPE_CHACHA20
 aead_multipart_set_nonce:PSA_KEY_TYPE_CHACHA20:"808182838485868788898a8b8c8d8e8f909192939495969798999a9b9c9d9e9f":PSA_ALG_CHACHA20_POLY1305:11:"50515253c0c1c2c3c4c5c6c7":"4c616469657320616e642047656e746c656d656e206f662074686520636c617373206f66202739393a204966204920636f756c64206f6666657220796f75206f6e6c79206f6e652074697020666f7220746865206675747572652c2073756e73637265656e20776f756c642062652069742e":PSA_ERROR_INVALID_ARGUMENT
 
@@ -3371,18 +3523,26 @@
 depends_on:PSA_WANT_ALG_CHACHA20_POLY1305:PSA_WANT_KEY_TYPE_CHACHA20
 aead_multipart_set_nonce:PSA_KEY_TYPE_CHACHA20:"808182838485868788898a8b8c8d8e8f909192939495969798999a9b9c9d9e9f":PSA_ALG_CHACHA20_POLY1305:12:"50515253c0c1c2c3c4c5c6c7":"4c616469657320616e642047656e746c656d656e206f662074686520636c617373206f66202739393a204966204920636f756c64206f6666657220796f75206f6e6c79206f6e652074697020666f7220746865206675747572652c2073756e73637265656e20776f756c642062652069742e":PSA_SUCCESS
 
-PSA Multipart Set Nonce: ChaCha20 - Poly1305, NONCE = 13
+PSA Multipart Set Nonce: ChaCha20 - Poly1305, NONCE = 13 (too big)
 depends_on:PSA_WANT_ALG_CHACHA20_POLY1305:PSA_WANT_KEY_TYPE_CHACHA20
 aead_multipart_set_nonce:PSA_KEY_TYPE_CHACHA20:"808182838485868788898a8b8c8d8e8f909192939495969798999a9b9c9d9e9f":PSA_ALG_CHACHA20_POLY1305:13:"50515253c0c1c2c3c4c5c6c7":"4c616469657320616e642047656e746c656d656e206f662074686520636c617373206f66202739393a204966204920636f756c64206f6666657220796f75206f6e6c79206f6e652074697020666f7220746865206675747572652c2073756e73637265656e20776f756c642062652069742e":PSA_ERROR_INVALID_ARGUMENT
 
-PSA Multipart Set Nonce: ChaCha20 - Poly1305, NONCE = 0 (NULL)
+PSA Multipart Set Nonce: ChaCha20 - Poly1305, NONCE = 0 (NULL) (too small)
 depends_on:PSA_WANT_ALG_CHACHA20_POLY1305:PSA_WANT_KEY_TYPE_CHACHA20
 aead_multipart_set_nonce:PSA_KEY_TYPE_CHACHA20:"808182838485868788898a8b8c8d8e8f909192939495969798999a9b9c9d9e9f":PSA_ALG_CHACHA20_POLY1305:0:"":"":PSA_ERROR_INVALID_ARGUMENT
 
-PSA Multipart Set Nonce: ChaCha20 - Poly1305, NONCE = 0 (Non-NULL)
+PSA Multipart Set Nonce: ChaCha20 - Poly1305, NONCE = 0 (Non-NULL) (too small)
 depends_on:PSA_WANT_ALG_CHACHA20_POLY1305:PSA_WANT_KEY_TYPE_CHACHA20
 aead_multipart_set_nonce:PSA_KEY_TYPE_CHACHA20:"808182838485868788898a8b8c8d8e8f909192939495969798999a9b9c9d9e9f":PSA_ALG_CHACHA20_POLY1305:-1:"":"":PSA_ERROR_INVALID_ARGUMENT
 
+PSA AEAD output buffer test: AES - CCM, IN = 40 BUF = 39
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_update_buffer_test:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_CCM:39:"48c0906930561e0ab0ef4cd972":"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26d56961c035a7e452cce61bc6ee220d77b3f94d18fd10b6d80e8bf80f4a46cab06d4313f0db9be9":PSA_ERROR_BUFFER_TOO_SMALL
+
+PSA AEAD output buffer test: AES - CCM, IN = 40 BUF = 0
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_update_buffer_test:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_CCM:0:"48c0906930561e0ab0ef4cd972":"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26d56961c035a7e452cce61bc6ee220d77b3f94d18fd10b6d80e8bf80f4a46cab06d4313f0db9be9":PSA_ERROR_BUFFER_TOO_SMALL
+
 PSA AEAD output buffer test: AES - GCM, IN = 16, BUF = 15
 depends_on:PSA_WANT_ALG_GCM:PSA_WANT_KEY_TYPE_AES
 aead_multipart_update_buffer_test:PSA_KEY_TYPE_AES:"fbc0b4c56a714c83217b2d1bcadd2ed2e9efb0dcac6cc19f":PSA_ALG_GCM:15:"5f4b43e811da9c470d6a9b01":"":"d2ae38c4375954835d75b8e4c2f9bbb4":PSA_ERROR_BUFFER_TOO_SMALL
@@ -3399,6 +3559,18 @@
 depends_on:PSA_WANT_ALG_CHACHA20_POLY1305:PSA_WANT_KEY_TYPE_CHACHA20
 aead_multipart_update_buffer_test:PSA_KEY_TYPE_CHACHA20:"808182838485868788898a8b8c8d8e8f909192939495969798999a9b9c9d9e9f":PSA_ALG_CHACHA20_POLY1305:0:"070000004041424344454647":"50515253c0c1c2c3c4c5c6c7":"d31a8d34648e60db7b86afbc53ef7ec2a4aded51296e08fea9e2b5a736ee62d63dbea45e8ca9671282fafb69da92728b1a71de0a9e060b2905d6a5b67ecd3b3692ddbd7f2d778b8c9803aee328091b58fab324e4fad675945585808b4831d7bc3ff4def08e4b7a9de576d26586cec64b61161ae10b594f09e26a7e902ecbd0600691":PSA_ERROR_BUFFER_TOO_SMALL
 
+PSA AEAD finish buffer test: AES - CCM, BUF = 0, TAG = 20
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_finish_buffer_test:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_CCM:0:20:"48c0906930561e0ab0ef4cd972":"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26d56961c035a7e452cce61bc6ee220d77b3f94d18fd10b6d80e8bf80f4a46cab06d4313f0db9be9":PSA_SUCCESS
+
+PSA AEAD finish buffer test: AES - CCM, BUF = 0, TAG = 15
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_finish_buffer_test:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_CCM:0:15:"48c0906930561e0ab0ef4cd972":"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26d56961c035a7e452cce61bc6ee220d77b3f94d18fd10b6d80e8bf80f4a46cab06d4313f0db9be9":PSA_ERROR_BUFFER_TOO_SMALL
+
+PSA AEAD finish buffer test: AES - CCM, BUF = 0, TAG = 0
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_finish_buffer_test:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_CCM:0:0:"48c0906930561e0ab0ef4cd972":"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26d56961c035a7e452cce61bc6ee220d77b3f94d18fd10b6d80e8bf80f4a46cab06d4313f0db9be9":PSA_ERROR_BUFFER_TOO_SMALL
+
 PSA AEAD finish buffer test: AES - GCM, BUF = 8, TAG = 16
 depends_on:PSA_WANT_ALG_GCM:PSA_WANT_KEY_TYPE_AES
 aead_multipart_finish_buffer_test:PSA_KEY_TYPE_AES:"fbc0b4c56a714c83217b2d1bcadd2ed2e9efb0dcac6cc19f":PSA_ALG_GCM:8:16:"5f4b43e811da9c470d6a9b01":"":"d2ae38c4375954835d75b8e4c2f9bbb4":PSA_SUCCESS
@@ -3439,6 +3611,10 @@
 depends_on:PSA_WANT_ALG_CHACHA20_POLY1305:PSA_WANT_KEY_TYPE_CHACHA20
 aead_multipart_setup:PSA_KEY_TYPE_CHACHA20:"808182838485868788898a8b8c8d8e8f909192939495969798999a9b9c9d9e9f":PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CHACHA20_POLY1305,12):PSA_ERROR_NOT_SUPPORTED
 
+PSA AEAD setup: AES - CCM, invalid tag length 18
+depends_on:PSA_WANT_ALG_CCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_setup:PSA_KEY_TYPE_AES:"4189351B5CAEA375A0299E81C621BF43":PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM,18):PSA_ERROR_INVALID_ARGUMENT
+
 PSA Multipart State Checks, AES - GCM
 depends_on:PSA_WANT_ALG_GCM:PSA_WANT_KEY_TYPE_AES
 aead_multipart_state_test:PSA_KEY_TYPE_AES:"C0C1C2C3C4C5C6C7C8C9CACBCCCDCECF":PSA_ALG_GCM:"000102030405060708090A0B0C0D0E0F":"000102030405060708090A0B":"0C0D0E0F101112131415161718191A1B1C1D1E"
diff --git a/tests/suites/test_suite_psa_crypto.function b/tests/suites/test_suite_psa_crypto.function
index d28de0c..b6222b9 100644
--- a/tests/suites/test_suite_psa_crypto.function
+++ b/tests/suites/test_suite_psa_crypto.function
@@ -4073,12 +4073,13 @@
         TEST_EQUAL( actual_nonce_length, PSA_AEAD_NONCE_LENGTH( key_type,
                                                                 alg ) );
 
-    TEST_ASSERT( actual_nonce_length < PSA_AEAD_NONCE_MAX_SIZE );
+    TEST_ASSERT( actual_nonce_length <= PSA_AEAD_NONCE_MAX_SIZE );
 
     if( expected_status == PSA_SUCCESS )
     {
-
         /* Ensure we can still complete operation. */
+        PSA_ASSERT( psa_aead_set_lengths( &operation, additional_data->len,
+                                          input_data->len ) );
 
         PSA_ASSERT( psa_aead_update_ad( &operation, additional_data->x,
                                         additional_data->len ) );
@@ -4191,6 +4192,8 @@
     if( expected_status == PSA_SUCCESS )
     {
         /* Ensure we can still complete operation. */
+        PSA_ASSERT( psa_aead_set_lengths( &operation, additional_data->len,
+                                          input_data->len ) );
 
         PSA_ASSERT( psa_aead_update_ad( &operation, additional_data->x,
                                         additional_data->len ) );
@@ -4269,6 +4272,9 @@
 
     PSA_ASSERT( status );
 
+    PSA_ASSERT( psa_aead_set_lengths( &operation, additional_data->len,
+                                      input_data->len ) );
+
     PSA_ASSERT( psa_aead_set_nonce( &operation, nonce->x, nonce->len ) );
 
     PSA_ASSERT( psa_aead_update_ad( &operation, additional_data->x,
@@ -4357,6 +4363,9 @@
 
     PSA_ASSERT( psa_aead_set_nonce( &operation, nonce->x, nonce->len ) );
 
+    PSA_ASSERT( psa_aead_set_lengths( &operation, additional_data->len,
+                                      input_data->len ) );
+
     PSA_ASSERT( psa_aead_update_ad( &operation, additional_data->x,
                                     additional_data->len ) );
 
@@ -4442,6 +4451,20 @@
 
     PSA_ASSERT( psa_aead_set_nonce( &operation, nonce->x, nonce->len ) );
 
+    status = psa_aead_set_lengths( &operation, additional_data->len,
+                                      input_data->len );
+
+    if( status != PSA_SUCCESS )
+    {
+        /* Invalid tag lengths are detected in CCM at this point, as they
+         * would be written into the first block. They should really be
+         * detected in psa_aead_encrypt/decrypt_setup, and will be fixed
+         * to do so in the future, until that point, this is a
+         * workaround.*/
+        TEST_EQUAL( status, expected_status );
+        goto exit;
+    }
+
     PSA_ASSERT( psa_aead_update_ad( &operation, additional_data->x,
                                     additional_data->len ) );
 
diff --git a/tests/suites/test_suite_ssl.data b/tests/suites/test_suite_ssl.data
index 10171eb..b444040 100644
--- a/tests/suites/test_suite_ssl.data
+++ b/tests/suites/test_suite_ssl.data
@@ -2363,7 +2363,7 @@
 ssl_crypt_record:MBEDTLS_CIPHER_AES_128_GCM:MBEDTLS_MD_MD5:0:0:MBEDTLS_SSL_MINOR_VERSION_3:0:0
 
 Record crypt, AES-128-GCM, 1.3
-depends_on:MBEDTLS_AES_C:MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL:MBEDTLS_GCM_C
+depends_on:MBEDTLS_AES_C:MBEDTLS_SSL_PROTO_TLS1_3:MBEDTLS_GCM_C
 ssl_crypt_record:MBEDTLS_CIPHER_AES_128_GCM:MBEDTLS_MD_MD5:0:0:MBEDTLS_SSL_MINOR_VERSION_4:0:0
 
 Record crypt, AES-128-GCM, 1.2, CID 4+4
@@ -2391,7 +2391,7 @@
 ssl_crypt_record:MBEDTLS_CIPHER_AES_192_GCM:MBEDTLS_MD_MD5:0:0:MBEDTLS_SSL_MINOR_VERSION_3:0:0
 
 Record crypt, AES-192-GCM, 1.3
-depends_on:MBEDTLS_AES_C:MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL:MBEDTLS_GCM_C
+depends_on:MBEDTLS_AES_C:MBEDTLS_SSL_PROTO_TLS1_3:MBEDTLS_GCM_C
 ssl_crypt_record:MBEDTLS_CIPHER_AES_192_GCM:MBEDTLS_MD_MD5:0:0:MBEDTLS_SSL_MINOR_VERSION_4:0:0
 
 Record crypt, AES-192-GCM, 1.2, CID 4+4
@@ -2419,7 +2419,7 @@
 ssl_crypt_record:MBEDTLS_CIPHER_AES_256_GCM:MBEDTLS_MD_MD5:0:0:MBEDTLS_SSL_MINOR_VERSION_3:0:0
 
 Record crypt, AES-256-GCM, 1.3
-depends_on:MBEDTLS_AES_C:MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL:MBEDTLS_GCM_C
+depends_on:MBEDTLS_AES_C:MBEDTLS_SSL_PROTO_TLS1_3:MBEDTLS_GCM_C
 ssl_crypt_record:MBEDTLS_CIPHER_AES_256_GCM:MBEDTLS_MD_MD5:0:0:MBEDTLS_SSL_MINOR_VERSION_4:0:0
 
 Record crypt, AES-256-GCM, 1.2, CID 4+4
@@ -2519,7 +2519,7 @@
 ssl_crypt_record:MBEDTLS_CIPHER_AES_128_CCM:MBEDTLS_MD_MD5:0:0:MBEDTLS_SSL_MINOR_VERSION_3:0:0
 
 Record crypt, AES-128-CCM, 1.3
-depends_on:MBEDTLS_AES_C:MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL:MBEDTLS_CCM_C
+depends_on:MBEDTLS_AES_C:MBEDTLS_SSL_PROTO_TLS1_3:MBEDTLS_CCM_C
 ssl_crypt_record:MBEDTLS_CIPHER_AES_128_CCM:MBEDTLS_MD_MD5:0:0:MBEDTLS_SSL_MINOR_VERSION_4:0:0
 
 Record crypt, AES-128-CCM, 1.2, CID 4+4
@@ -2547,7 +2547,7 @@
 ssl_crypt_record:MBEDTLS_CIPHER_AES_192_CCM:MBEDTLS_MD_MD5:0:0:MBEDTLS_SSL_MINOR_VERSION_3:0:0
 
 Record crypt, AES-192-CCM, 1.3
-depends_on:MBEDTLS_AES_C:MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL:MBEDTLS_CCM_C
+depends_on:MBEDTLS_AES_C:MBEDTLS_SSL_PROTO_TLS1_3:MBEDTLS_CCM_C
 ssl_crypt_record:MBEDTLS_CIPHER_AES_192_CCM:MBEDTLS_MD_MD5:0:0:MBEDTLS_SSL_MINOR_VERSION_4:0:0
 
 Record crypt, AES-192-CCM, 1.2, CID 4+4
@@ -2575,7 +2575,7 @@
 ssl_crypt_record:MBEDTLS_CIPHER_AES_256_CCM:MBEDTLS_MD_MD5:0:0:MBEDTLS_SSL_MINOR_VERSION_3:0:0
 
 Record crypt, AES-256-CCM, 1.3
-depends_on:MBEDTLS_AES_C:MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL:MBEDTLS_CCM_C
+depends_on:MBEDTLS_AES_C:MBEDTLS_SSL_PROTO_TLS1_3:MBEDTLS_CCM_C
 ssl_crypt_record:MBEDTLS_CIPHER_AES_256_CCM:MBEDTLS_MD_MD5:0:0:MBEDTLS_SSL_MINOR_VERSION_4:0:0
 
 Record crypt, AES-256-CCM, 1.2, CID 4+4
@@ -2739,7 +2739,7 @@
 ssl_crypt_record:MBEDTLS_CIPHER_CHACHA20_POLY1305:MBEDTLS_MD_MD5:0:0:MBEDTLS_SSL_MINOR_VERSION_3:0:0
 
 Record crypt, ChachaPoly, 1.3
-depends_on:MBEDTLS_CHACHAPOLY_C:MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+depends_on:MBEDTLS_CHACHAPOLY_C:MBEDTLS_SSL_PROTO_TLS1_3
 ssl_crypt_record:MBEDTLS_CIPHER_CHACHA20_POLY1305:MBEDTLS_MD_MD5:0:0:MBEDTLS_SSL_MINOR_VERSION_4:0:0
 
 Record crypt, little space, ChachaPoly
@@ -2747,7 +2747,7 @@
 ssl_crypt_record_small:MBEDTLS_CIPHER_CHACHA20_POLY1305:MBEDTLS_MD_MD5:0:0:MBEDTLS_SSL_MINOR_VERSION_3:0:0
 
 Record crypt, little space, ChachaPoly, 1.3
-depends_on:MBEDTLS_CHACHAPOLY_C:MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+depends_on:MBEDTLS_CHACHAPOLY_C:MBEDTLS_SSL_PROTO_TLS1_3
 ssl_crypt_record_small:MBEDTLS_CIPHER_CHACHA20_POLY1305:MBEDTLS_MD_MD5:0:0:MBEDTLS_SSL_MINOR_VERSION_4:0:0
 
 Record crypt, little space, ChachaPoly, CID 4+4
@@ -4491,7 +4491,7 @@
 ssl_crypt_record_small:MBEDTLS_CIPHER_AES_128_GCM:MBEDTLS_MD_MD5:0:0:MBEDTLS_SSL_MINOR_VERSION_3:0:0
 
 Record crypt, little space, AES-128-GCM, 1.3
-depends_on:MBEDTLS_AES_C:MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL:MBEDTLS_GCM_C
+depends_on:MBEDTLS_AES_C:MBEDTLS_SSL_PROTO_TLS1_3:MBEDTLS_GCM_C
 ssl_crypt_record_small:MBEDTLS_CIPHER_AES_128_GCM:MBEDTLS_MD_MD5:0:0:MBEDTLS_SSL_MINOR_VERSION_4:0:0
 
 Record crypt, little space, AES-128-GCM, 1.2, CID 4+4
@@ -4519,7 +4519,7 @@
 ssl_crypt_record_small:MBEDTLS_CIPHER_AES_192_GCM:MBEDTLS_MD_MD5:0:0:MBEDTLS_SSL_MINOR_VERSION_3:0:0
 
 Record crypt, little space, AES-192-GCM, 1.3
-depends_on:MBEDTLS_AES_C:MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL:MBEDTLS_GCM_C
+depends_on:MBEDTLS_AES_C:MBEDTLS_SSL_PROTO_TLS1_3:MBEDTLS_GCM_C
 ssl_crypt_record_small:MBEDTLS_CIPHER_AES_192_GCM:MBEDTLS_MD_MD5:0:0:MBEDTLS_SSL_MINOR_VERSION_4:0:0
 
 Record crypt, little space, AES-192-GCM, 1.2, CID 4+4
@@ -4547,7 +4547,7 @@
 ssl_crypt_record_small:MBEDTLS_CIPHER_AES_256_GCM:MBEDTLS_MD_MD5:0:0:MBEDTLS_SSL_MINOR_VERSION_3:0:0
 
 Record crypt, little space, AES-256-GCM, 1.3
-depends_on:MBEDTLS_AES_C:MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL:MBEDTLS_GCM_C
+depends_on:MBEDTLS_AES_C:MBEDTLS_SSL_PROTO_TLS1_3:MBEDTLS_GCM_C
 ssl_crypt_record_small:MBEDTLS_CIPHER_AES_256_GCM:MBEDTLS_MD_MD5:0:0:MBEDTLS_SSL_MINOR_VERSION_4:0:0
 
 Record crypt, little space, AES-256-GCM, 1.2, CID 4+4
@@ -4647,7 +4647,7 @@
 ssl_crypt_record_small:MBEDTLS_CIPHER_AES_128_CCM:MBEDTLS_MD_MD5:0:0:MBEDTLS_SSL_MINOR_VERSION_3:0:0
 
 Record crypt, little space, AES-128-CCM, 1.3
-depends_on:MBEDTLS_AES_C:MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL:MBEDTLS_CCM_C
+depends_on:MBEDTLS_AES_C:MBEDTLS_SSL_PROTO_TLS1_3:MBEDTLS_CCM_C
 ssl_crypt_record_small:MBEDTLS_CIPHER_AES_128_CCM:MBEDTLS_MD_MD5:0:0:MBEDTLS_SSL_MINOR_VERSION_4:0:0
 
 Record crypt, little space, AES-128-CCM, 1.2, CID 4+4
@@ -4675,7 +4675,7 @@
 ssl_crypt_record_small:MBEDTLS_CIPHER_AES_192_CCM:MBEDTLS_MD_MD5:0:0:MBEDTLS_SSL_MINOR_VERSION_3:0:0
 
 Record crypt, little space, AES-192-CCM, 1.3
-depends_on:MBEDTLS_AES_C:MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL:MBEDTLS_CCM_C
+depends_on:MBEDTLS_AES_C:MBEDTLS_SSL_PROTO_TLS1_3:MBEDTLS_CCM_C
 ssl_crypt_record_small:MBEDTLS_CIPHER_AES_192_CCM:MBEDTLS_MD_MD5:0:0:MBEDTLS_SSL_MINOR_VERSION_4:0:0
 
 Record crypt, little space, AES-192-CCM, 1.2, CID 4+4
@@ -4703,7 +4703,7 @@
 ssl_crypt_record_small:MBEDTLS_CIPHER_AES_256_CCM:MBEDTLS_MD_MD5:0:0:MBEDTLS_SSL_MINOR_VERSION_3:0:0
 
 Record crypt, little space, AES-256-CCM, 1.3
-depends_on:MBEDTLS_AES_C:MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL:MBEDTLS_CCM_C
+depends_on:MBEDTLS_AES_C:MBEDTLS_SSL_PROTO_TLS1_3:MBEDTLS_CCM_C
 ssl_crypt_record_small:MBEDTLS_CIPHER_AES_256_CCM:MBEDTLS_MD_MD5:0:0:MBEDTLS_SSL_MINOR_VERSION_4:0:0
 
 Record crypt, little space, AES-256-CCM, 1.2, CID 4+4
@@ -5889,7 +5889,7 @@
 SSL TLS 1.3 Key schedule: Secret evolution #1
 # Vector from TLS 1.3 Byte by Byte (https://tls13.ulfheim.net/)
 # Initial secret to Early Secret
-depends_on:MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL
+depends_on:MBEDTLS_SSL_PROTO_TLS1_3
 ssl_tls13_key_evolution:MBEDTLS_MD_SHA256:"":"":"33ad0a1c607ec03b09e6cd9893680ce210adf300aa1f2660e1b22e10f170f92a"
 
 SSL TLS 1.3 Key schedule: Secret evolution #2
diff --git a/tests/suites/test_suite_ssl.function b/tests/suites/test_suite_ssl.function
index c1bc17c..ce934b0 100644
--- a/tests/suites/test_suite_ssl.function
+++ b/tests/suites/test_suite_ssl.function
@@ -1323,14 +1323,14 @@
     {
         case MBEDTLS_MODE_GCM:
         case MBEDTLS_MODE_CCM:
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
             if( ver == MBEDTLS_SSL_MINOR_VERSION_4 )
             {
                 t_out->fixed_ivlen = 12;
                 t_in->fixed_ivlen  = 12;
             }
             else
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
             {
                 t_out->fixed_ivlen = 4;
                 t_in->fixed_ivlen = 4;
@@ -3254,7 +3254,7 @@
         }
 #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
         if( t_enc->minor_ver == MBEDTLS_SSL_MINOR_VERSION_4 )
         {
             /* TLS 1.3 hides the real content type and
@@ -3262,7 +3262,7 @@
              * for protected records. Double-check this. */
             TEST_ASSERT( rec.type == MBEDTLS_SSL_MSG_APPLICATION_DATA );
         }
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 
         /* Decrypt record with t_dec */
         ret = mbedtls_ssl_decrypt_buf( &ssl, t_dec, &rec );
@@ -3418,7 +3418,7 @@
             }
 #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
             if( t_enc->minor_ver == MBEDTLS_SSL_MINOR_VERSION_4 )
             {
                 /* TLS 1.3 hides the real content type and
@@ -3426,7 +3426,7 @@
                  * for protected records. Double-check this. */
                 TEST_ASSERT( rec.type == MBEDTLS_SSL_MSG_APPLICATION_DATA );
             }
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 
             /* Decrypt record with t_dec */
             TEST_ASSERT( mbedtls_ssl_decrypt_buf( &ssl, t_dec, &rec ) == 0 );
@@ -3669,7 +3669,7 @@
 }
 /* END_CASE */
 
-/* BEGIN_CASE depends_on:MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+/* BEGIN_CASE depends_on:MBEDTLS_SSL_PROTO_TLS1_3 */
 void ssl_tls13_hkdf_expand_label( int hash_alg,
                                   data_t *secret,
                                   int label_idx,
@@ -3707,7 +3707,7 @@
 }
 /* END_CASE */
 
-/* BEGIN_CASE depends_on:MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+/* BEGIN_CASE depends_on:MBEDTLS_SSL_PROTO_TLS1_3 */
 void ssl_tls13_traffic_key_generation( int hash_alg,
                                        data_t *server_secret,
                                        data_t *client_secret,
@@ -3754,7 +3754,7 @@
 }
 /* END_CASE */
 
-/* BEGIN_CASE depends_on:MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+/* BEGIN_CASE depends_on:MBEDTLS_SSL_PROTO_TLS1_3 */
 void ssl_tls13_derive_secret( int hash_alg,
                               data_t *secret,
                               int label_idx,
@@ -3794,7 +3794,7 @@
 }
 /* END_CASE */
 
-/* BEGIN_CASE depends_on:MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+/* BEGIN_CASE depends_on:MBEDTLS_SSL_PROTO_TLS1_3 */
 void ssl_tls13_derive_early_secrets( int hash_alg,
                                      data_t *secret,
                                      data_t *transcript,
@@ -3824,7 +3824,7 @@
 }
 /* END_CASE */
 
-/* BEGIN_CASE depends_on:MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+/* BEGIN_CASE depends_on:MBEDTLS_SSL_PROTO_TLS1_3 */
 void ssl_tls13_derive_handshake_secrets( int hash_alg,
                                          data_t *secret,
                                          data_t *transcript,
@@ -3854,7 +3854,7 @@
 }
 /* END_CASE */
 
-/* BEGIN_CASE depends_on:MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+/* BEGIN_CASE depends_on:MBEDTLS_SSL_PROTO_TLS1_3 */
 void ssl_tls13_derive_application_secrets( int hash_alg,
                                            data_t *secret,
                                            data_t *transcript,
@@ -3888,7 +3888,7 @@
 }
 /* END_CASE */
 
-/* BEGIN_CASE depends_on:MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+/* BEGIN_CASE depends_on:MBEDTLS_SSL_PROTO_TLS1_3 */
 void ssl_tls13_derive_resumption_secrets( int hash_alg,
                                           data_t *secret,
                                           data_t *transcript,
@@ -3914,7 +3914,7 @@
 }
 /* END_CASE */
 
-/* BEGIN_CASE depends_on:MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+/* BEGIN_CASE depends_on:MBEDTLS_SSL_PROTO_TLS1_3 */
 void ssl_tls13_create_psk_binder( int hash_alg,
                                   data_t *psk,
                                   int psk_type,
@@ -3944,7 +3944,7 @@
 }
 /* END_CASE */
 
-/* BEGIN_CASE depends_on:MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+/* BEGIN_CASE depends_on:MBEDTLS_SSL_PROTO_TLS1_3 */
 void ssl_tls13_record_protection( int ciphersuite,
                                   int endpoint,
                                   int ctr,
@@ -4042,7 +4042,7 @@
 }
 /* END_CASE */
 
-/* BEGIN_CASE depends_on:MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
+/* BEGIN_CASE depends_on:MBEDTLS_SSL_PROTO_TLS1_3 */
 void ssl_tls13_key_evolution( int hash_alg,
                               data_t *secret,
                               data_t *input,
@@ -4332,7 +4332,7 @@
                                       corrupt_config == 1 };
 
     mbedtls_ssl_session_init( &session );
-    ssl_populate_session_tls12( &session, 0, NULL );
+    TEST_ASSERT( ssl_populate_session_tls12( &session, 0, NULL ) == 0 );
 
     /* Infer length of serialized session. */
     TEST_ASSERT( mbedtls_ssl_session_save( &session,
@@ -4904,7 +4904,7 @@
 
     mbedtls_ssl_context ssl;
     mbedtls_ssl_init( &ssl );
-    mbedtls_ssl_setup( &ssl, &conf );
+    TEST_ASSERT( mbedtls_ssl_setup( &ssl, &conf ) == 0 );
 
     TEST_ASSERT( ssl.handshake != NULL && ssl.handshake->group_list != NULL );
     TEST_ASSERT( ssl.conf != NULL && ssl.conf->group_list == NULL );
@@ -4937,7 +4937,7 @@
 
     mbedtls_ssl_context ssl;
     mbedtls_ssl_init( &ssl );
-    mbedtls_ssl_setup( &ssl, &conf );
+    TEST_ASSERT( mbedtls_ssl_setup( &ssl, &conf ) == 0 );
 
     TEST_ASSERT( ssl.conf != NULL && ssl.conf->group_list != NULL );