diff --git a/include/mbedtls/bignum.h b/include/mbedtls/bignum.h
index 5c2c843..e7f3131 100644
--- a/include/mbedtls/bignum.h
+++ b/include/mbedtls/bignum.h
@@ -594,6 +594,8 @@
  * \brief          Perform a left-shift on an MPI: X <<= count
  *
  * \param X        The MPI to shift. This must point to an initialized MPI.
+ *                 The MPI pointed by \p X may be resized to fit
+ *                 the resulting number.
  * \param count    The number of bits to shift by.
  *
  * \return         \c 0 if successful.
diff --git a/include/mbedtls/build_info.h b/include/mbedtls/build_info.h
index ba5844f..c2c9dc9 100644
--- a/include/mbedtls/build_info.h
+++ b/include/mbedtls/build_info.h
@@ -87,6 +87,18 @@
 #define MBEDTLS_MD_C
 #endif
 
+/* PSA crypto specific configuration options
+ * - If config_psa.h reads a configuration option in preprocessor directive,
+ *   this symbol should be set before its inclusion. (e.g. MBEDTLS_MD_C)
+ * - If config_psa.h writes a configuration option in conditional directive,
+ *   this symbol should be consulted after its inclusion.
+ *   (e.g. MBEDTLS_MD_LIGHT)
+ */
+#if defined(MBEDTLS_PSA_CRYPTO_CONFIG) /* PSA_WANT_xxx influences MBEDTLS_xxx */ || \
+    defined(MBEDTLS_PSA_CRYPTO_C) /* MBEDTLS_xxx influences PSA_WANT_xxx */
+#include "mbedtls/config_psa.h"
+#endif
+
 /* Auto-enable MBEDTLS_MD_LIGHT based on MBEDTLS_MD_C.
  * This allows checking for MD_LIGHT rather than MD_LIGHT || MD_C.
  */
@@ -100,8 +112,12 @@
 #if defined(MBEDTLS_ECJPAKE_C) || \
     defined(MBEDTLS_PEM_PARSE_C) || \
     defined(MBEDTLS_ENTROPY_C) || \
+    defined(MBEDTLS_PK_C) || \
     defined(MBEDTLS_PKCS12_C) || \
-    defined(MBEDTLS_RSA_C)
+    defined(MBEDTLS_RSA_C) || \
+    defined(MBEDTLS_SSL_TLS_C) || \
+    defined(MBEDTLS_X509_USE_C) || \
+    defined(MBEDTLS_X509_CREATE_C)
 #define MBEDTLS_MD_LIGHT
 #endif
 
@@ -185,11 +201,6 @@
 
 /* Make sure all configuration symbols are set before including check_config.h,
  * even the ones that are calculated programmatically. */
-#if defined(MBEDTLS_PSA_CRYPTO_CONFIG) /* PSA_WANT_xxx influences MBEDTLS_xxx */ || \
-    defined(MBEDTLS_PSA_CRYPTO_C) /* MBEDTLS_xxx influences PSA_WANT_xxx */
-#include "mbedtls/config_psa.h"
-#endif
-
 #include "mbedtls/check_config.h"
 
 #endif /* MBEDTLS_BUILD_INFO_H */
diff --git a/include/mbedtls/config_psa.h b/include/mbedtls/config_psa.h
index 20d4358..3a2f06e 100644
--- a/include/mbedtls/config_psa.h
+++ b/include/mbedtls/config_psa.h
@@ -148,6 +148,13 @@
 #endif /* !MBEDTLS_PSA_ACCEL_ALG_ECDSA */
 #endif /* PSA_WANT_ALG_ECDSA */
 
+#if defined(PSA_WANT_ALG_FFDH)
+#if !defined(MBEDTLS_PSA_ACCEL_ALG_FFDH)
+#define MBEDTLS_PSA_BUILTIN_ALG_FFDH 1
+#define MBEDTLS_BIGNUM_C
+#endif /* !MBEDTLS_PSA_ACCEL_ALG_FFDH */
+#endif /* PSA_WANT_ALG_FFDH */
+
 #if defined(PSA_WANT_ALG_HKDF)
 #if !defined(MBEDTLS_PSA_ACCEL_ALG_HKDF)
 #define MBEDTLS_PSA_BUILTIN_ALG_HMAC 1
@@ -261,6 +268,15 @@
 #define MBEDTLS_SHA512_C
 #endif
 
+#if defined(PSA_WANT_ALG_PBKDF2_HMAC)
+#if !defined(MBEDTLS_PSA_ACCEL_ALG_PBKDF2_HMAC)
+#define MBEDTLS_PSA_BUILTIN_ALG_PBKDF2_HMAC 1
+#if !defined(MBEDTLS_PSA_ACCEL_ALG_HMAC)
+#define MBEDTLS_PSA_BUILTIN_ALG_HMAC 1
+#endif /* !MBEDTLS_PSA_ACCEL_ALG_HMAC */
+#endif /* !MBEDTLS_PSA_BUILTIN_ALG_PBKDF2_HMAC */
+#endif /* PSA_WANT_ALG_PBKDF2_HMAC */
+
 #if defined(PSA_WANT_ALG_TLS12_PRF)
 #if !defined(MBEDTLS_PSA_ACCEL_ALG_TLS12_PRF)
 #define MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF 1
@@ -287,6 +303,13 @@
 #endif /* !MBEDTLS_PSA_ACCEL_KEY_TYPE_ECC_KEY_PAIR */
 #endif /* PSA_WANT_KEY_TYPE_ECC_KEY_PAIR */
 
+#if defined(PSA_WANT_KEY_TYPE_DH_KEY_PAIR)
+#if !defined(MBEDTLS_PSA_ACCEL_KEY_TYPE_DH_KEY_PAIR)
+#define MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_KEY_PAIR 1
+#define MBEDTLS_BIGNUM_C
+#endif /* !MBEDTLS_PSA_ACCEL_KEY_TYPE_DH_KEY_PAIR */
+#endif /* PSA_WANT_KEY_TYPE_DH_KEY_PAIR */
+
 #if defined(PSA_WANT_KEY_TYPE_ECC_PUBLIC_KEY)
 #if !defined(MBEDTLS_PSA_ACCEL_KEY_TYPE_ECC_PUBLIC_KEY)
 #define MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_PUBLIC_KEY 1
@@ -295,6 +318,13 @@
 #endif /* !MBEDTLS_PSA_ACCEL_KEY_TYPE_ECC_PUBLIC_KEY */
 #endif /* PSA_WANT_KEY_TYPE_ECC_PUBLIC_KEY */
 
+#if defined(PSA_WANT_KEY_TYPE_DH_PUBLIC_KEY)
+#if !defined(MBEDTLS_PSA_ACCEL_KEY_TYPE_DH_PUBLIC_KEY)
+#define MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_PUBLIC_KEY 1
+#define MBEDTLS_BIGNUM_C
+#endif /* !MBEDTLS_PSA_ACCEL_KEY_TYPE_DH_PUBLIC_KEY */
+#endif /* PSA_WANT_KEY_TYPE_DH_PUBLIC_KEY */
+
 #if defined(PSA_WANT_KEY_TYPE_RSA_KEY_PAIR)
 #if !defined(MBEDTLS_PSA_ACCEL_KEY_TYPE_RSA_KEY_PAIR)
 #define MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR 1
@@ -651,6 +681,16 @@
 #define PSA_WANT_KEY_TYPE_ECC_PUBLIC_KEY 1
 #endif /* MBEDTLS_ECP_C */
 
+#if defined(MBEDTLS_DHM_C)
+#define PSA_WANT_KEY_TYPE_DH_KEY_PAIR 1
+#define PSA_WANT_KEY_TYPE_DH_PUBLIC_KEY 1
+#define PSA_WANT_ALG_FFDH 1
+#define PSA_WANT_DH_FAMILY_RFC7919 1
+#define MBEDTLS_PSA_BUILTIN_ALG_FFDH 1
+#define MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_KEY_PAIR 1
+#define MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_PUBLIC_KEY 1
+#endif /* MBEDTLS_DHM_C */
+
 #if defined(MBEDTLS_GCM_C)
 #define MBEDTLS_PSA_BUILTIN_ALG_GCM 1
 #define PSA_WANT_ALG_GCM 1
@@ -877,6 +917,10 @@
 
 #endif /* MBEDTLS_PSA_CRYPTO_CONFIG */
 
+#if defined(PSA_WANT_ALG_JPAKE)
+#define PSA_WANT_ALG_SOME_PAKE 1
+#endif
+
 /* These features are always enabled. */
 #define PSA_WANT_KEY_TYPE_DERIVE 1
 #define PSA_WANT_KEY_TYPE_PASSWORD 1
diff --git a/include/mbedtls/md.h b/include/mbedtls/md.h
index a142903..d72b7fc 100644
--- a/include/mbedtls/md.h
+++ b/include/mbedtls/md.h
@@ -112,6 +112,9 @@
 #define MBEDTLS_MD_CAN_SHA512
 #define MBEDTLS_MD_SOME_LEGACY
 #endif
+#if defined(MBEDTLS_SHA3_C)
+#define MBEDTLS_MD_CAN_SHA3
+#endif
 #if defined(MBEDTLS_RIPEMD160_C)
 #define MBEDTLS_MD_CAN_RIPEMD160
 #define MBEDTLS_MD_SOME_LEGACY
@@ -155,6 +158,16 @@
     MBEDTLS_MD_SHA3_512,    /**< The SHA3-512 message digest. */
 } mbedtls_md_type_t;
 
+/* Note: this should always be >= PSA_HASH_MAX_SIZE
+ * in all builds with both CRYPTO_C and MD_LIGHT.
+ *
+ * This is to make things easier for modules such as TLS that may define a
+ * buffer size using MD_MAX_SIZE in a part of the code that's common to PSA
+ * and legacy, then assume the buffer's size is PSA_HASH_MAX_SIZE in another
+ * part of the code based on PSA.
+ *
+ * Currently both macros have the same value, avoiding such issues.
+ */
 #if defined(MBEDTLS_MD_CAN_SHA512) || defined(MBEDTLS_SHA3_C)
 #define MBEDTLS_MD_MAX_SIZE         64  /* longest known is SHA512 */
 #elif defined(MBEDTLS_MD_CAN_SHA384)
@@ -168,7 +181,7 @@
                                            or smaller (MD5 and earlier) */
 #endif
 
-#if defined(MBEDTLS_SHA3_C)
+#if defined(MBEDTLS_MD_CAN_SHA3)
 #define MBEDTLS_MD_MAX_BLOCK_SIZE         144 /* the longest known is SHA3-224 */
 #elif defined(MBEDTLS_MD_CAN_SHA512)
 #define MBEDTLS_MD_MAX_BLOCK_SIZE         128
@@ -317,6 +330,20 @@
 unsigned char mbedtls_md_get_size(const mbedtls_md_info_t *md_info);
 
 /**
+ * \brief           This function gives the message-digest size associated to
+ *                  message-digest type.
+ *
+ * \param md_type   The message-digest type.
+ *
+ * \return          The size of the message-digest output in Bytes,
+ *                  or 0 if the message-digest type is not known.
+ */
+static inline unsigned char mbedtls_md_get_size_from_type(mbedtls_md_type_t md_type)
+{
+    return mbedtls_md_get_size(mbedtls_md_info_from_type(md_type));
+}
+
+/**
  * \brief           This function extracts the message-digest type from the
  *                  message-digest information structure.
  *
diff --git a/include/mbedtls/oid.h b/include/mbedtls/oid.h
index 1cbf968..ec36748 100644
--- a/include/mbedtls/oid.h
+++ b/include/mbedtls/oid.h
@@ -64,6 +64,11 @@
 #define MBEDTLS_OID_X509_EXT_NS_CERT_TYPE                (1 << 16)
 
 /*
+ * Maximum number of OID components allowed
+ */
+#define MBEDTLS_OID_MAX_COMPONENTS              128
+
+/*
  * Top level OID tuples
  */
 #define MBEDTLS_OID_ISO_MEMBER_BODIES           "\x2a"          /* {iso(1) member-body(2)} */
@@ -479,6 +484,25 @@
 int mbedtls_oid_get_numeric_string(char *buf, size_t size, const mbedtls_asn1_buf *oid);
 
 /**
+ * \brief           Translate a string containing a dotted-decimal
+ *                  representation of an ASN.1 OID into its encoded form
+ *                  (e.g. "1.2.840.113549" into "\x2A\x86\x48\x86\xF7\x0D").
+ *                  On success, this function allocates oid->buf from the
+ *                  heap. It must be freed by the caller using mbedtls_free().
+ *
+ * \param oid       #mbedtls_asn1_buf to populate with the DER-encoded OID
+ * \param oid_str   string representation of the OID to parse
+ * \param size      length of the OID string, not including any null terminator
+ *
+ * \return          0 if successful
+ * \return          #MBEDTLS_ERR_ASN1_INVALID_DATA if \p oid_str does not
+ *                  represent a valid OID
+ * \return          #MBEDTLS_ERR_ASN1_ALLOC_FAILED if the function fails to
+ *                  allocate oid->buf
+ */
+int mbedtls_oid_from_numeric_string(mbedtls_asn1_buf *oid, const char *oid_str, size_t size);
+
+/**
  * \brief          Translate an X.509 extension OID into local values
  *
  * \param oid      OID to use
diff --git a/include/mbedtls/pk.h b/include/mbedtls/pk.h
index c579661..ec99c84 100644
--- a/include/mbedtls/pk.h
+++ b/include/mbedtls/pk.h
@@ -40,7 +40,7 @@
 #include "mbedtls/ecdsa.h"
 #endif
 
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
+#if defined(MBEDTLS_USE_PSA_CRYPTO) || defined(MBEDTLS_PSA_CRYPTO_C)
 #include "psa/crypto.h"
 #endif
 
@@ -202,6 +202,27 @@
 #define MBEDTLS_PK_CAN_ECDH
 #endif
 
+/* Internal helper to define which fields in the pk_context structure below
+ * should be used for EC keys: legacy ecp_keypair or the raw (PSA friendly)
+ * format. It should be noticed that this only affect how data is stored, not
+ * which functions are used for various operations. The overall picture looks
+ * like this:
+ * - if ECP_C is defined then use legacy functions
+ * - if USE_PSA is defined and
+ *     - if ECP_C then use ecp_keypair structure, convert data to a PSA friendly
+ *       format and use PSA functions
+ *     - if !ECP_C then use new raw data and PSA functions directly.
+ *
+ * The main reason for the "intermediate" (USE_PSA + ECP_C) above is that as long
+ * as ECP_C is defined mbedtls_pk_ec() gives the user a read/write access to the
+ * ecp_keypair structure inside the pk_context so he/she can modify it using
+ * ECP functions which are not under PK module's control.
+ */
+#if defined(MBEDTLS_USE_PSA_CRYPTO) && !defined(MBEDTLS_ECP_C) && \
+    defined(MBEDTLS_ECP_LIGHT)
+#define MBEDTLS_PK_USE_PSA_EC_DATA
+#endif /* MBEDTLS_USE_PSA_CRYPTO && !MBEDTLS_ECP_C */
+
 /**
  * \brief           Types for interfacing with the debug module
  */
@@ -209,6 +230,7 @@
     MBEDTLS_PK_DEBUG_NONE = 0,
     MBEDTLS_PK_DEBUG_MPI,
     MBEDTLS_PK_DEBUG_ECP,
+    MBEDTLS_PK_DEBUG_PSA_EC,
 } mbedtls_pk_debug_type;
 
 /**
@@ -232,12 +254,59 @@
  */
 typedef struct mbedtls_pk_info_t mbedtls_pk_info_t;
 
+#define MBEDTLS_PK_MAX_EC_PUBKEY_RAW_LEN \
+    PSA_KEY_EXPORT_ECC_PUBLIC_KEY_MAX_SIZE(PSA_VENDOR_ECC_MAX_CURVE_BITS)
 /**
  * \brief           Public key container
  */
 typedef struct mbedtls_pk_context {
     const mbedtls_pk_info_t *MBEDTLS_PRIVATE(pk_info);    /**< Public key information         */
     void *MBEDTLS_PRIVATE(pk_ctx);                        /**< Underlying public key context  */
+    /* The following field is used to store the ID of a private key in the
+     * following cases:
+     * - opaque key when MBEDTLS_PSA_CRYPTO_C is defined
+     * - normal key when MBEDTLS_PK_USE_PSA_EC_DATA is defined. In this case:
+     *    - the pk_ctx above is not not used to store the private key anymore.
+     *      Actually that field not populated at all in this case because also
+     *      the public key will be stored in raw format as explained below
+     *    - this ID is used for all private key operations (ex: sign, check
+     *      key pair, key write, etc) using PSA functions
+     *
+     * Note: this private key storing solution only affects EC keys, not the
+     *       other ones. The latters still use the pk_ctx to store their own
+     *       context.
+     *
+     * Note: this priv_id is guarded by MBEDTLS_PSA_CRYPTO_C and not by
+     *       MBEDTLS_PK_USE_PSA_EC_DATA (as the public counterpart below) because,
+     *       when working with opaque keys, it can be used also in
+     *       mbedtls_pk_sign_ext for RSA keys. */
+#if defined(MBEDTLS_PSA_CRYPTO_C)
+    mbedtls_svc_key_id_t MBEDTLS_PRIVATE(priv_id);      /**< Key ID for opaque keys */
+#endif /* MBEDTLS_PSA_CRYPTO_C */
+    /* The following fields are meant for storing the public key in raw format
+     * which is handy for:
+     * - easily importing it into the PSA context
+     * - reducing the ECP module dependencies in the PK one.
+     *
+     * When MBEDTLS_PK_USE_PSA_EC_DATA is enabled:
+     * - the pk_ctx above is not used anymore for storing the public key
+     *   inside the ecp_keypair structure
+     * - the following fields are used for all public key operations: signature
+     *   verify, key pair check and key write.
+     * Of course, when MBEDTLS_PK_USE_PSA_EC_DATA is not enabled, the legacy
+     * ecp_keypair structure is used for storing the public key and performing
+     * all the operations.
+     *
+     * Note: This new public key storing solution only works for EC keys, not
+     *       other ones. The latters still use pk_ctx to store their own
+     *       context.
+     */
+#if defined(MBEDTLS_PK_USE_PSA_EC_DATA)
+    uint8_t MBEDTLS_PRIVATE(pub_raw)[MBEDTLS_PK_MAX_EC_PUBKEY_RAW_LEN]; /**< Raw public key   */
+    size_t MBEDTLS_PRIVATE(pub_raw_len);            /**< Valid bytes in "pub_raw" */
+    psa_ecc_family_t MBEDTLS_PRIVATE(ec_family);    /**< EC family of pk */
+    size_t MBEDTLS_PRIVATE(ec_bits);                /**< Curve's bits of pk */
+#endif /* MBEDTLS_PK_USE_PSA_EC_DATA */
 } mbedtls_pk_context;
 
 #if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE)
@@ -771,7 +840,7 @@
 }
 #endif /* MBEDTLS_RSA_C */
 
-#if defined(MBEDTLS_ECP_LIGHT)
+#if defined(MBEDTLS_ECP_C)
 /**
  * Quick access to an EC context inside a PK context.
  *
@@ -794,7 +863,7 @@
             return NULL;
     }
 }
-#endif /* MBEDTLS_ECP_LIGHT */
+#endif /* MBEDTLS_ECP_C */
 
 #if defined(MBEDTLS_PK_PARSE_C)
 /** \ingroup pk_module */
diff --git a/include/mbedtls/platform.h b/include/mbedtls/platform.h
index f651587..768c756 100644
--- a/include/mbedtls/platform.h
+++ b/include/mbedtls/platform.h
@@ -139,6 +139,8 @@
 #if defined(MBEDTLS_PLATFORM_MEMORY)
 #if defined(MBEDTLS_PLATFORM_FREE_MACRO) && \
     defined(MBEDTLS_PLATFORM_CALLOC_MACRO)
+#undef mbedtls_free
+#undef mbedtls_calloc
 #define mbedtls_free       MBEDTLS_PLATFORM_FREE_MACRO
 #define mbedtls_calloc     MBEDTLS_PLATFORM_CALLOC_MACRO
 #else
@@ -160,6 +162,8 @@
                                      void (*free_func)(void *));
 #endif /* MBEDTLS_PLATFORM_FREE_MACRO && MBEDTLS_PLATFORM_CALLOC_MACRO */
 #else /* !MBEDTLS_PLATFORM_MEMORY */
+#undef mbedtls_free
+#undef mbedtls_calloc
 #define mbedtls_free       free
 #define mbedtls_calloc     calloc
 #endif /* MBEDTLS_PLATFORM_MEMORY && !MBEDTLS_PLATFORM_{FREE,CALLOC}_MACRO */
@@ -184,6 +188,7 @@
 int mbedtls_platform_set_fprintf(int (*fprintf_func)(FILE *stream, const char *,
                                                      ...));
 #else
+#undef mbedtls_fprintf
 #if defined(MBEDTLS_PLATFORM_FPRINTF_MACRO)
 #define mbedtls_fprintf    MBEDTLS_PLATFORM_FPRINTF_MACRO
 #else
@@ -208,6 +213,7 @@
  */
 int mbedtls_platform_set_printf(int (*printf_func)(const char *, ...));
 #else /* !MBEDTLS_PLATFORM_PRINTF_ALT */
+#undef mbedtls_printf
 #if defined(MBEDTLS_PLATFORM_PRINTF_MACRO)
 #define mbedtls_printf     MBEDTLS_PLATFORM_PRINTF_MACRO
 #else
@@ -243,6 +249,7 @@
 int mbedtls_platform_set_snprintf(int (*snprintf_func)(char *s, size_t n,
                                                        const char *format, ...));
 #else /* MBEDTLS_PLATFORM_SNPRINTF_ALT */
+#undef mbedtls_snprintf
 #if defined(MBEDTLS_PLATFORM_SNPRINTF_MACRO)
 #define mbedtls_snprintf   MBEDTLS_PLATFORM_SNPRINTF_MACRO
 #else
@@ -279,6 +286,7 @@
 int mbedtls_platform_set_vsnprintf(int (*vsnprintf_func)(char *s, size_t n,
                                                          const char *format, va_list arg));
 #else /* MBEDTLS_PLATFORM_VSNPRINTF_ALT */
+#undef mbedtls_vsnprintf
 #if defined(MBEDTLS_PLATFORM_VSNPRINTF_MACRO)
 #define mbedtls_vsnprintf   MBEDTLS_PLATFORM_VSNPRINTF_MACRO
 #else
@@ -320,7 +328,9 @@
  */
 int mbedtls_platform_set_setbuf(void (*setbuf_func)(
                                     FILE *stream, char *buf));
-#elif defined(MBEDTLS_PLATFORM_SETBUF_MACRO)
+#else
+#undef mbedtls_setbuf
+#if defined(MBEDTLS_PLATFORM_SETBUF_MACRO)
 /**
  * \brief                  Macro defining the function for the library to
  *                         call for `setbuf` functionality (changing the
@@ -334,7 +344,8 @@
 #define mbedtls_setbuf    MBEDTLS_PLATFORM_SETBUF_MACRO
 #else
 #define mbedtls_setbuf    setbuf
-#endif /* MBEDTLS_PLATFORM_SETBUF_ALT / MBEDTLS_PLATFORM_SETBUF_MACRO */
+#endif /* MBEDTLS_PLATFORM_SETBUF_MACRO */
+#endif /* MBEDTLS_PLATFORM_SETBUF_ALT */
 
 /*
  * The function pointers for exit
@@ -353,6 +364,7 @@
  */
 int mbedtls_platform_set_exit(void (*exit_func)(int status));
 #else
+#undef mbedtls_exit
 #if defined(MBEDTLS_PLATFORM_EXIT_MACRO)
 #define mbedtls_exit   MBEDTLS_PLATFORM_EXIT_MACRO
 #else
@@ -405,6 +417,8 @@
     int (*nv_seed_write_func)(unsigned char *buf, size_t buf_len)
     );
 #else
+#undef mbedtls_nv_seed_read
+#undef mbedtls_nv_seed_write
 #if defined(MBEDTLS_PLATFORM_NV_SEED_READ_MACRO) && \
     defined(MBEDTLS_PLATFORM_NV_SEED_WRITE_MACRO)
 #define mbedtls_nv_seed_read    MBEDTLS_PLATFORM_NV_SEED_READ_MACRO
diff --git a/include/mbedtls/psa_util.h b/include/mbedtls/psa_util.h
index b750716..528c0ab 100644
--- a/include/mbedtls/psa_util.h
+++ b/include/mbedtls/psa_util.h
@@ -29,6 +29,8 @@
 
 #include "mbedtls/build_info.h"
 
+#include "mbedtls/platform_util.h"
+
 #if defined(MBEDTLS_PSA_CRYPTO_C)
 
 #include "psa/crypto.h"
@@ -120,49 +122,6 @@
     }
 }
 
-/* Translations for hashing. */
-
-/* Note: this function should not be used from inside the library, use
- * mbedtls_hash_info_psa_from_md() from the internal hash_info.h instead.
- * It is kept only for compatibility in case applications were using it. */
-static inline psa_algorithm_t mbedtls_psa_translate_md(mbedtls_md_type_t md_alg)
-{
-    switch (md_alg) {
-#if defined(MBEDTLS_MD5_C) || defined(PSA_WANT_ALG_MD5)
-        case MBEDTLS_MD_MD5:
-            return PSA_ALG_MD5;
-#endif
-#if defined(MBEDTLS_SHA1_C) || defined(PSA_WANT_ALG_SHA_1)
-        case MBEDTLS_MD_SHA1:
-            return PSA_ALG_SHA_1;
-#endif
-#if defined(MBEDTLS_SHA224_C) || defined(PSA_WANT_ALG_SHA_224)
-        case MBEDTLS_MD_SHA224:
-            return PSA_ALG_SHA_224;
-#endif
-#if defined(MBEDTLS_SHA256_C) || defined(PSA_WANT_ALG_SHA_256)
-        case MBEDTLS_MD_SHA256:
-            return PSA_ALG_SHA_256;
-#endif
-#if defined(MBEDTLS_SHA384_C) || defined(PSA_WANT_ALG_SHA_384)
-        case MBEDTLS_MD_SHA384:
-            return PSA_ALG_SHA_384;
-#endif
-#if defined(MBEDTLS_SHA512_C) || defined(PSA_WANT_ALG_SHA_512)
-        case MBEDTLS_MD_SHA512:
-            return PSA_ALG_SHA_512;
-#endif
-#if defined(MBEDTLS_RIPEMD160_C) || defined(PSA_WANT_ALG_RIPEMD160)
-        case MBEDTLS_MD_RIPEMD160:
-            return PSA_ALG_RIPEMD160;
-#endif
-        case MBEDTLS_MD_NONE:
-            return 0;
-        default:
-            return 0;
-    }
-}
-
 /* Translations for ECC. */
 
 static inline int mbedtls_psa_get_ecc_oid_from_id(
@@ -248,6 +207,22 @@
 #endif /* MBEDTLS_ECP_DP_BP512R1_ENABLED */
             }
             break;
+        case PSA_ECC_FAMILY_MONTGOMERY:
+            switch (bits) {
+#if defined(MBEDTLS_ECP_DP_CURVE25519_ENABLED)
+                case 255:
+                    *oid = MBEDTLS_OID_X25519;
+                    *oid_len = MBEDTLS_OID_SIZE(MBEDTLS_OID_X25519);
+                    return 0;
+#endif /* MBEDTLS_ECP_DP_CURVE25519_ENABLED */
+#if defined(MBEDTLS_ECP_DP_CURVE448_ENABLED)
+                case 448:
+                    *oid = MBEDTLS_OID_X448;
+                    *oid_len = MBEDTLS_OID_SIZE(MBEDTLS_OID_X448);
+                    return 0;
+#endif /* MBEDTLS_ECP_DP_CURVE448_ENABLED */
+            }
+            break;
     }
     (void) oid;
     (void) oid_len;
@@ -345,11 +320,15 @@
 #endif /* !defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG) */
 
 typedef struct {
-    psa_status_t psa_status;
+    /* Error codes used by PSA crypto are in -255..-128, fitting in 16 bits. */
+    int16_t psa_status;
+    /* Error codes used by Mbed TLS are in one of the ranges
+     * -127..-1 (low-level) or -32767..-4096 (high-level with a low-level
+     * code optionally added), fitting in 16 bits. */
     int16_t mbedtls_error;
 } mbedtls_error_pair_t;
 
-#if !defined(MBEDTLS_MD_C) || !defined(MBEDTLS_MD5_C) || defined(MBEDTLS_USE_PSA_CRYPTO)
+#if defined(MBEDTLS_MD_LIGHT)
 extern const mbedtls_error_pair_t psa_to_md_errors[4];
 #endif
 
diff --git a/include/mbedtls/x509.h b/include/mbedtls/x509.h
index 8dfd1f3..df6d762 100644
--- a/include/mbedtls/x509.h
+++ b/include/mbedtls/x509.h
@@ -243,6 +243,17 @@
  */
 typedef mbedtls_asn1_sequence mbedtls_x509_sequence;
 
+/*
+ * Container for the fields of the Authority Key Identifier object
+ */
+typedef struct mbedtls_x509_authority {
+    mbedtls_x509_buf keyIdentifier;
+    mbedtls_x509_sequence authorityCertIssuer;
+    mbedtls_x509_buf authorityCertSerialNumber;
+    mbedtls_x509_buf raw;
+}
+mbedtls_x509_authority;
+
 /** Container for date and time (precision in seconds). */
 typedef struct mbedtls_x509_time {
     int year, mon, day;         /**< Date. */
@@ -293,7 +304,7 @@
 typedef struct mbedtls_x509_subject_alternative_name {
     int type;                              /**< The SAN type, value of MBEDTLS_X509_SAN_XXX. */
     union {
-        mbedtls_x509_san_other_name other_name; /**< The otherName supported type. */
+        mbedtls_x509_san_other_name other_name;
         mbedtls_x509_name directory_name;
         mbedtls_x509_buf unstructured_name; /**< The buffer for the unstructured types. rfc822Name, dnsName and uniformResourceIdentifier are currently supported. */
     }
@@ -301,6 +312,12 @@
 }
 mbedtls_x509_subject_alternative_name;
 
+typedef struct mbedtls_x509_san_list {
+    mbedtls_x509_subject_alternative_name node;
+    struct mbedtls_x509_san_list *next;
+}
+mbedtls_x509_san_list;
+
 /** \} name Structures for parsing X.509 certificates, CRLs and CSRs */
 
 /**
@@ -390,7 +407,8 @@
  *                 of the subject alternative name encoded in \p san_raw.
  *
  * \note           Supported GeneralName types, as defined in RFC 5280:
- *                 "rfc822Name", "dnsName", "uniformResourceIdentifier" and "hardware_module_name"
+ *                 "rfc822Name", "dnsName", "directoryName",
+ *                 "uniformResourceIdentifier" and "hardware_module_name"
  *                 of type "otherName", as defined in RFC 4108.
  *
  * \note           This function should be called on a single raw data of
@@ -470,6 +488,9 @@
 int mbedtls_x509_get_subject_alt_name(unsigned char **p,
                                       const unsigned char *end,
                                       mbedtls_x509_sequence *subject_alt_name);
+int mbedtls_x509_get_subject_alt_name_ext(unsigned char **p,
+                                          const unsigned char *end,
+                                          mbedtls_x509_sequence *subject_alt_name);
 int mbedtls_x509_info_subject_alt_name(char **buf, size_t *size,
                                        const mbedtls_x509_sequence
                                        *subject_alt_name,
diff --git a/include/mbedtls/x509_crt.h b/include/mbedtls/x509_crt.h
index a795183..078781c 100644
--- a/include/mbedtls/x509_crt.h
+++ b/include/mbedtls/x509_crt.h
@@ -75,7 +75,9 @@
     mbedtls_x509_buf issuer_id;         /**< Optional X.509 v2/v3 issuer unique identifier. */
     mbedtls_x509_buf subject_id;        /**< Optional X.509 v2/v3 subject unique identifier. */
     mbedtls_x509_buf v3_ext;            /**< Optional X.509 v3 extensions.  */
-    mbedtls_x509_sequence subject_alt_names;    /**< Optional list of raw entries of Subject Alternative Names extension (currently only dNSName, uniformResourceIdentifier, DirectoryName and OtherName are listed). */
+    mbedtls_x509_sequence subject_alt_names; /**< Optional list of raw entries of Subject Alternative Names extension. These can be later parsed by mbedtls_x509_parse_subject_alt_name. */
+    mbedtls_x509_buf subject_key_id;    /**< Optional X.509 v3 extension subject key identifier. */
+    mbedtls_x509_authority authority_key_id;    /**< Optional X.509 v3 extension authority key identifier. */
 
     mbedtls_x509_sequence certificate_policies; /**< Optional list of certificate policies (Only anyPolicy is printed and enforced, however the rest of the policies are still listed). */
 
@@ -240,6 +242,21 @@
 mbedtls_x509write_cert;
 
 /**
+ * \brief           Set Subject Alternative Name
+ *
+ * \param ctx       Certificate context to use
+ * \param san_list  List of SAN values
+ *
+ * \return          0 if successful, or MBEDTLS_ERR_X509_ALLOC_FAILED
+ *
+ * \note            "dnsName", "uniformResourceIdentifier", "IP address",
+ *                  "otherName", and "DirectoryName", as defined in RFC 5280,
+ *                  are supported.
+ */
+int mbedtls_x509write_crt_set_subject_alternative_name(mbedtls_x509write_cert *ctx,
+                                                       const mbedtls_x509_san_list *san_list);
+
+/**
  * Item in a verification chain: cert and flags for it
  */
 typedef struct {
@@ -559,6 +576,7 @@
 int mbedtls_x509_crt_parse_path(mbedtls_x509_crt *chain, const char *path);
 
 #endif /* MBEDTLS_FS_IO */
+
 #if !defined(MBEDTLS_X509_REMOVE_INFO)
 /**
  * \brief          Returns an informational string about the
@@ -638,8 +656,12 @@
  * \param cn       The expected Common Name. This will be checked to be
  *                 present in the certificate's subjectAltNames extension or,
  *                 if this extension is absent, as a CN component in its
- *                 Subject name. DNS names and IP addresses are supported. This
- *                 may be \c NULL if the CN need not be verified.
+ *                 Subject name. DNS names and IP addresses are fully
+ *                 supported, while the URI subtype is partially supported:
+ *                 only exact matching, without any normalization procedures
+ *                 described in 7.4 of RFC5280, will result in a positive
+ *                 URI verification.
+ *                 This may be \c NULL if the CN need not be verified.
  * \param flags    The address at which to store the result of the verification.
  *                 If the verification couldn't be completed, the flag value is
  *                 set to (uint32_t) -1.
diff --git a/include/mbedtls/x509_csr.h b/include/mbedtls/x509_csr.h
index f3f9e13..80adb19 100644
--- a/include/mbedtls/x509_csr.h
+++ b/include/mbedtls/x509_csr.h
@@ -60,7 +60,7 @@
 
     unsigned int key_usage;     /**< Optional key usage extension value: See the values in x509.h */
     unsigned char ns_cert_type; /**< Optional Netscape certificate type extension value: See the values in x509.h */
-    mbedtls_x509_sequence subject_alt_names;    /**< Optional list of raw entries of Subject Alternative Names extension (currently only dNSName and OtherName are listed). */
+    mbedtls_x509_sequence subject_alt_names; /**< Optional list of raw entries of Subject Alternative Names extension. These can be later parsed by mbedtls_x509_parse_subject_alt_name. */
 
     int MBEDTLS_PRIVATE(ext_types);              /**< Bit string containing detected and parsed extensions */
 
@@ -83,12 +83,6 @@
 }
 mbedtls_x509write_csr;
 
-typedef struct mbedtls_x509_san_list {
-    mbedtls_x509_subject_alternative_name node;
-    struct mbedtls_x509_san_list *next;
-}
-mbedtls_x509_san_list;
-
 #if defined(MBEDTLS_X509_CSR_PARSE_C)
 /**
  * \brief          Load a Certificate Signing Request (CSR) in DER format