diff --git a/CMakeLists.txt b/CMakeLists.txt
index a0d0aa7..bb86788 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -131,7 +131,10 @@
         set(target "${CMAKE_CURRENT_SOURCE_DIR}/${base_name}")
     endif()
 
-    if (NOT EXISTS ${link})
+    # Linking to non-existent file is not desirable. At best you will have a
+    # dangling link, but when building in tree, this can create a symbolic link
+    # to itself.
+    if (EXISTS ${target} AND NOT EXISTS ${link})
         if (CMAKE_HOST_UNIX)
             set(command ln -s ${target} ${link})
         else()
diff --git a/ChangeLog.d/fix-aes-shallow-copying.txt b/ChangeLog.d/fix-aes-shallow-copying.txt
new file mode 100644
index 0000000..0c119d6
--- /dev/null
+++ b/ChangeLog.d/fix-aes-shallow-copying.txt
@@ -0,0 +1,2 @@
+Bugfix
+   * Refactor mbedtls_aes_context to support shallow-copying. Fixes #2147.
diff --git a/ChangeLog.d/fix_cmake_gen_files b/ChangeLog.d/fix_cmake_gen_files
new file mode 100644
index 0000000..3b2c099
--- /dev/null
+++ b/ChangeLog.d/fix_cmake_gen_files
@@ -0,0 +1,3 @@
+Bugfix
+   * Fix an issue in releases with GEN_FILES turned off whereby missing
+     generated files could be turned into symlinks to themselves.
diff --git a/include/mbedtls/aes.h b/include/mbedtls/aes.h
index 144bd89..c359011 100644
--- a/include/mbedtls/aes.h
+++ b/include/mbedtls/aes.h
@@ -80,7 +80,8 @@
 typedef struct mbedtls_aes_context
 {
     int MBEDTLS_PRIVATE(nr);                     /*!< The number of rounds. */
-    uint32_t *MBEDTLS_PRIVATE(rk);               /*!< AES round keys. */
+    size_t MBEDTLS_PRIVATE(rk_offset);           /*!< The offset in array elements to AES
+                                     round keys in the buffer. */
     uint32_t MBEDTLS_PRIVATE(buf)[68];           /*!< Unaligned data buffer. This buffer can
                                      hold 32 extra Bytes, which can be used for
                                      one of the following purposes:
diff --git a/include/mbedtls/check_config.h b/include/mbedtls/check_config.h
index 5fe9849..cd17f9d 100644
--- a/include/mbedtls/check_config.h
+++ b/include/mbedtls/check_config.h
@@ -843,6 +843,11 @@
 #error "MBEDTLS_SSL_TICKET_C defined, but not all prerequisites"
 #endif
 
+#if defined(MBEDTLS_SSL_TLS1_3_TICKET_NONCE_LENGTH) && \
+    MBEDTLS_SSL_TLS1_3_TICKET_NONCE_LENGTH >= 256
+#error "MBEDTLS_SSL_TLS1_3_TICKET_NONCE_LENGTH must be less than 256"
+#endif
+
 #if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION) && \
         !defined(MBEDTLS_X509_CRT_PARSE_C)
 #error "MBEDTLS_SSL_SERVER_NAME_INDICATION defined, but not all prerequisites"
diff --git a/include/mbedtls/mbedtls_config.h b/include/mbedtls/mbedtls_config.h
index 1c60ec8..2bf24a0 100644
--- a/include/mbedtls/mbedtls_config.h
+++ b/include/mbedtls/mbedtls_config.h
@@ -1542,6 +1542,15 @@
 //#define MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
 
 /**
+ * \def MBEDTLS_SSL_TLS1_3_TICKET_NONCE_LENGTH
+ *
+ * Size in bytes of a ticket nonce. This is not used in TLS 1.2.
+ *
+ * This must be less than 256.
+ */
+#define MBEDTLS_SSL_TLS1_3_TICKET_NONCE_LENGTH 32
+
+/**
  * \def MBEDTLS_SSL_PROTO_DTLS
  *
  * Enable support for DTLS (all available versions).
diff --git a/include/mbedtls/ssl.h b/include/mbedtls/ssl.h
index 7893edd..5512482 100644
--- a/include/mbedtls/ssl.h
+++ b/include/mbedtls/ssl.h
@@ -98,6 +98,8 @@
 /* Error space gap */
 /** Processing of the Certificate handshake message failed. */
 #define MBEDTLS_ERR_SSL_BAD_CERTIFICATE                   -0x7A00
+/** Received NewSessionTicket Post Handshake Message */
+#define MBEDTLS_ERR_SSL_RECEIVED_NEW_SESSION_TICKET       -0x7B00
 /* Error space gap */
 /* Error space gap */
 /* Error space gap */
@@ -333,6 +335,13 @@
 #define MBEDTLS_SSL_SRV_CIPHERSUITE_ORDER_CLIENT  1
 #define MBEDTLS_SSL_SRV_CIPHERSUITE_ORDER_SERVER  0
 
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3) && defined(MBEDTLS_SSL_SESSION_TICKETS)
+#if defined(MBEDTLS_SHA384_C)
+#define MBEDTLS_SSL_TLS1_3_TICKET_RESUMPTION_KEY_LEN        48
+#elif defined(MBEDTLS_SHA256_C)
+#define MBEDTLS_SSL_TLS1_3_TICKET_RESUMPTION_KEY_LEN        32
+#endif /* MBEDTLS_SHA256_C  */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 && MBEDTLS_SSL_SESSION_TICKETS */
 /*
  * Default range for DTLS retransmission timer value, in milliseconds.
  * RFC 6347 4.2.4.1 says from 1 second to 60 seconds.
@@ -649,7 +658,7 @@
     MBEDTLS_SSL_FLUSH_BUFFERS,
     MBEDTLS_SSL_HANDSHAKE_WRAPUP,
     MBEDTLS_SSL_HANDSHAKE_OVER,
-    MBEDTLS_SSL_SERVER_NEW_SESSION_TICKET,
+    MBEDTLS_SSL_NEW_SESSION_TICKET,
     MBEDTLS_SSL_SERVER_HELLO_VERIFY_REQUEST_SENT,
     MBEDTLS_SSL_HELLO_RETRY_REQUEST,
     MBEDTLS_SSL_ENCRYPTED_EXTENSIONS,
@@ -658,6 +667,7 @@
     MBEDTLS_SSL_CLIENT_CCS_BEFORE_2ND_CLIENT_HELLO,
     MBEDTLS_SSL_SERVER_CCS_AFTER_SERVER_HELLO,
     MBEDTLS_SSL_SERVER_CCS_AFTER_HELLO_RETRY_REQUEST,
+    MBEDTLS_SSL_NEW_SESSION_TICKET_FLUSH,
 }
 mbedtls_ssl_states;
 
@@ -1171,6 +1181,17 @@
     uint32_t MBEDTLS_PRIVATE(ticket_lifetime);   /*!< ticket lifetime hint    */
 #endif /* MBEDTLS_SSL_SESSION_TICKETS && MBEDTLS_SSL_CLI_C */
 
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3) && defined(MBEDTLS_SSL_SESSION_TICKETS)
+    uint32_t MBEDTLS_PRIVATE(ticket_age_add);               /*!< Randomly generated value used to obscure the age of the ticket */
+    uint8_t MBEDTLS_PRIVATE(resumption_key_len);            /*!< resumption_key length */
+    unsigned char MBEDTLS_PRIVATE(resumption_key)[MBEDTLS_SSL_TLS1_3_TICKET_RESUMPTION_KEY_LEN];
+
+#if defined(MBEDTLS_HAVE_TIME) && defined(MBEDTLS_SSL_CLI_C)
+    mbedtls_time_t MBEDTLS_PRIVATE(ticket_received);        /*!< time ticket was received */
+#endif /* MBEDTLS_HAVE_TIME && MBEDTLS_SSL_CLI_C */
+
+#endif /*  MBEDTLS_SSL_PROTO_TLS1_3 && MBEDTLS_SSL_SESSION_TICKETS */
+
 #if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
     int MBEDTLS_PRIVATE(encrypt_then_mac);       /*!< flag for EtM activation                */
 #endif
diff --git a/library/aes.c b/library/aes.c
index bf5d432..ca94e0a 100644
--- a/library/aes.c
+++ b/library/aes.c
@@ -550,19 +550,19 @@
     }
 #endif
 
+    ctx->rk_offset = 0;
 #if defined(MBEDTLS_PADLOCK_C) && defined(MBEDTLS_PADLOCK_ALIGN16)
     if( aes_padlock_ace == -1 )
         aes_padlock_ace = mbedtls_padlock_has_support( MBEDTLS_PADLOCK_ACE );
 
     if( aes_padlock_ace )
-        ctx->rk = RK = MBEDTLS_PADLOCK_ALIGN16( ctx->buf );
-    else
+        ctx->rk_offset = MBEDTLS_PADLOCK_ALIGN16( ctx->buf ) - ctx->buf;
 #endif
-    ctx->rk = RK = ctx->buf;
+    RK = ctx->buf + ctx->rk_offset;
 
 #if defined(MBEDTLS_AESNI_C) && defined(MBEDTLS_HAVE_X86_64)
     if( mbedtls_aesni_has_support( MBEDTLS_AESNI_AES ) )
-        return( mbedtls_aesni_setkey_enc( (unsigned char *) ctx->rk, key, keybits ) );
+        return( mbedtls_aesni_setkey_enc( (unsigned char *) RK, key, keybits ) );
 #endif
 
     for( i = 0; i < ( keybits >> 5 ); i++ )
@@ -654,15 +654,15 @@
 
     mbedtls_aes_init( &cty );
 
+    ctx->rk_offset = 0;
 #if defined(MBEDTLS_PADLOCK_C) && defined(MBEDTLS_PADLOCK_ALIGN16)
     if( aes_padlock_ace == -1 )
         aes_padlock_ace = mbedtls_padlock_has_support( MBEDTLS_PADLOCK_ACE );
 
     if( aes_padlock_ace )
-        ctx->rk = RK = MBEDTLS_PADLOCK_ALIGN16( ctx->buf );
-    else
+        ctx->rk_offset = MBEDTLS_PADLOCK_ALIGN16( ctx->buf ) - ctx->buf;
 #endif
-    ctx->rk = RK = ctx->buf;
+    RK = ctx->buf + ctx->rk_offset;
 
     /* Also checks keybits */
     if( ( ret = mbedtls_aes_setkey_enc( &cty, key, keybits ) ) != 0 )
@@ -673,13 +673,13 @@
 #if defined(MBEDTLS_AESNI_C) && defined(MBEDTLS_HAVE_X86_64)
     if( mbedtls_aesni_has_support( MBEDTLS_AESNI_AES ) )
     {
-        mbedtls_aesni_inverse_key( (unsigned char *) ctx->rk,
-                           (const unsigned char *) cty.rk, ctx->nr );
+        mbedtls_aesni_inverse_key( (unsigned char *) RK,
+                           (const unsigned char *) ( cty.buf + cty.rk_offset ), ctx->nr );
         goto exit;
     }
 #endif
 
-    SK = cty.rk + cty.nr * 4;
+    SK = cty.buf + cty.rk_offset + cty.nr * 4;
 
     *RK++ = *SK++;
     *RK++ = *SK++;
@@ -843,7 +843,7 @@
                                   unsigned char output[16] )
 {
     int i;
-    uint32_t *RK = ctx->rk;
+    uint32_t *RK = ctx->buf + ctx->rk_offset;
     struct
     {
         uint32_t X[4];
@@ -907,7 +907,7 @@
                                   unsigned char output[16] )
 {
     int i;
-    uint32_t *RK = ctx->rk;
+    uint32_t *RK = ctx->buf + ctx->rk_offset;
     struct
     {
         uint32_t X[4];
@@ -971,7 +971,6 @@
                            unsigned char output[16] )
 {
     AES_VALIDATE_RET( ctx != NULL );
-    AES_VALIDATE_RET( ctx->rk != NULL );
     AES_VALIDATE_RET( input != NULL );
     AES_VALIDATE_RET( output != NULL );
     AES_VALIDATE_RET( mode == MBEDTLS_AES_ENCRYPT ||
diff --git a/library/aesni.c b/library/aesni.c
index be226c9..87d818a 100644
--- a/library/aesni.c
+++ b/library/aesni.c
@@ -127,7 +127,7 @@
          "3:                        \n\t"
          "movdqu    %%xmm0, (%4)    \n\t" // export output
          :
-         : "r" (ctx->nr), "r" (ctx->rk), "r" (mode), "r" (input), "r" (output)
+         : "r" (ctx->nr), "r" (ctx->buf + ctx->rk_offset), "r" (mode), "r" (input), "r" (output)
          : "memory", "cc", "xmm0", "xmm1" );
 
 
diff --git a/library/padlock.c b/library/padlock.c
index b8ba105..a128775 100644
--- a/library/padlock.c
+++ b/library/padlock.c
@@ -82,7 +82,11 @@
     uint32_t *ctrl;
     unsigned char buf[256];
 
-    rk  = ctx->rk;
+    rk = ctx->buf + ctx->rk_offset;
+
+    if( ( (long) rk & 15 ) != 0 )
+        return( MBEDTLS_ERR_PADLOCK_DATA_MISALIGNED );
+
     blk = MBEDTLS_PADLOCK_ALIGN16( buf );
     memcpy( blk, input, 16 );
 
@@ -125,11 +129,13 @@
     uint32_t *ctrl;
     unsigned char buf[256];
 
+    rk = ctx->buf + ctx->rk_offset;
+
     if( ( (long) input  & 15 ) != 0 ||
-        ( (long) output & 15 ) != 0 )
+        ( (long) output & 15 ) != 0 ||
+        ( (long) rk & 15 ) != 0 )
         return( MBEDTLS_ERR_PADLOCK_DATA_MISALIGNED );
 
-    rk = ctx->rk;
     iw = MBEDTLS_PADLOCK_ALIGN16( buf );
     memcpy( iw, iv, 16 );
 
diff --git a/library/ssl_misc.h b/library/ssl_misc.h
index 39a47ca..d16b254 100644
--- a/library/ssl_misc.h
+++ b/library/ssl_misc.h
@@ -611,14 +611,19 @@
      * Handshake specific crypto variables
      */
 #if defined(MBEDTLS_SSL_PROTO_TLS1_3)
-    int tls13_kex_modes; /*!< key exchange modes for TLS 1.3 */
+    uint8_t key_exchange_mode; /*!< Selected key exchange mode */
 
     /** Number of HelloRetryRequest messages received/sent from/to the server. */
     int hello_retry_request_count;
+
 #if defined(MBEDTLS_SSL_SRV_C)
     /** selected_group of key_share extension in HelloRetryRequest message. */
     uint16_t hrr_selected_group;
+#if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
+    uint8_t tls13_kex_modes; /*!< Key exchange modes supported by the client */
+#endif
 #endif /* MBEDTLS_SSL_SRV_C */
+
 #endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 
 #if defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
@@ -1769,6 +1774,7 @@
                    MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK_ALL ) );
 }
 
+#if defined(MBEDTLS_SSL_SRV_C) && defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
 /**
  * Given a list of key exchange modes, check if at least one of them is
  * supported.
@@ -1815,6 +1821,30 @@
     return( ! mbedtls_ssl_tls13_check_kex_modes( ssl,
                    MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK_ALL ) );
 }
+#endif /* MBEDTLS_SSL_SRV_C && MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED */
+
+/*
+ * Helper functions to check the selected key exchange mode.
+ */
+static inline int mbedtls_ssl_tls13_key_exchange_mode_check(
+    mbedtls_ssl_context *ssl, int kex_mask )
+{
+    return( ( ssl->handshake->key_exchange_mode & kex_mask ) != 0 );
+}
+
+static inline int mbedtls_ssl_tls13_key_exchange_mode_with_psk(
+    mbedtls_ssl_context *ssl )
+{
+    return( mbedtls_ssl_tls13_key_exchange_mode_check( ssl,
+                   MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK_ALL ) );
+}
+
+static inline int mbedtls_ssl_tls13_key_exchange_mode_with_ephemeral(
+    mbedtls_ssl_context *ssl )
+{
+    return( mbedtls_ssl_tls13_key_exchange_mode_check( ssl,
+                   MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_EPHEMERAL_ALL ) );
+}
 
 /*
  * Fetch TLS 1.3 handshake message header
diff --git a/library/ssl_msg.c b/library/ssl_msg.c
index fb0b709..dbef29b 100644
--- a/library/ssl_msg.c
+++ b/library/ssl_msg.c
@@ -5288,6 +5288,50 @@
 }
 #endif /* MBEDTLS_SSL_RENEGOTIATION */
 
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
+
+#if defined(MBEDTLS_SSL_SESSION_TICKETS) && defined(MBEDTLS_SSL_CLI_C)
+MBEDTLS_CHECK_RETURN_CRITICAL
+static int ssl_tls13_check_new_session_ticket( mbedtls_ssl_context *ssl )
+{
+
+    if( ( ssl->in_hslen == mbedtls_ssl_hs_hdr_len( ssl ) ) ||
+        ( ssl->in_msg[0] != MBEDTLS_SSL_HS_NEW_SESSION_TICKET ) )
+    {
+        return( 0 );
+    }
+
+    ssl->keep_current_message = 1;
+
+    MBEDTLS_SSL_DEBUG_MSG( 3, ( "NewSessionTicket received" ) );
+    mbedtls_ssl_handshake_set_state( ssl,
+                                     MBEDTLS_SSL_NEW_SESSION_TICKET );
+
+    return( MBEDTLS_ERR_SSL_WANT_READ );
+}
+#endif /* MBEDTLS_SSL_SESSION_TICKETS && MBEDTLS_SSL_CLI_C */
+
+MBEDTLS_CHECK_RETURN_CRITICAL
+static int ssl_tls13_handle_hs_message_post_handshake( mbedtls_ssl_context *ssl )
+{
+
+    MBEDTLS_SSL_DEBUG_MSG( 3, ( "received post-handshake message" ) );
+
+#if defined(MBEDTLS_SSL_SESSION_TICKETS) && defined(MBEDTLS_SSL_CLI_C)
+    if( ssl->conf->endpoint == MBEDTLS_SSL_IS_CLIENT )
+    {
+        int ret = ssl_tls13_check_new_session_ticket( ssl );
+        if( ret != 0 )
+            return( ret );
+    }
+#endif /* MBEDTLS_SSL_SESSION_TICKETS && MBEDTLS_SSL_CLI_C */
+
+    /* Fail in all other cases. */
+    return( MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE );
+}
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
+
+#if defined(MBEDTLS_SSL_PROTO_TLS1_2)
 /* This function is called from mbedtls_ssl_read() when a handshake message is
  * received after the initial handshake. In this context, handshake messages
  * may only be sent for the purpose of initiating renegotiations.
@@ -5298,7 +5342,7 @@
  * TLS 1.3 in the future without bloating the logic of mbedtls_ssl_read().
  */
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_handle_hs_message_post_handshake( mbedtls_ssl_context *ssl )
+static int ssl_tls12_handle_hs_message_post_handshake( mbedtls_ssl_context *ssl )
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
 
@@ -5380,18 +5424,39 @@
 
         MBEDTLS_SSL_DEBUG_MSG( 3, ( "refusing renegotiation, sending alert" ) );
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_2)
         if( ( ret = mbedtls_ssl_send_alert_message( ssl,
                          MBEDTLS_SSL_ALERT_LEVEL_WARNING,
                          MBEDTLS_SSL_ALERT_MSG_NO_RENEGOTIATION ) ) != 0 )
         {
             return( ret );
         }
-#endif /* MBEDTLS_SSL_PROTO_TLS1_2 */
     }
 
     return( 0 );
 }
+#endif /* MBEDTLS_SSL_PROTO_TLS1_2 */
+
+MBEDTLS_CHECK_RETURN_CRITICAL
+static int ssl_handle_hs_message_post_handshake( mbedtls_ssl_context *ssl )
+{
+    /* Check protocol version and dispatch accordingly. */
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
+    if( ssl->tls_version == MBEDTLS_SSL_VERSION_TLS1_3 )
+    {
+        return( ssl_tls13_handle_hs_message_post_handshake( ssl ) );
+    }
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
+
+#if defined(MBEDTLS_SSL_PROTO_TLS1_2)
+    if( ssl->tls_version <= MBEDTLS_SSL_VERSION_TLS1_2 )
+    {
+        return( ssl_tls12_handle_hs_message_post_handshake( ssl ) );
+    }
+#endif /* MBEDTLS_SSL_PROTO_TLS1_2 */
+
+    /* Should never happen */
+    return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
+}
 
 /*
  * Receive application data decrypted from the SSL layer
diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index e60b82f..99768a2 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -443,6 +443,7 @@
 static size_t ssl_session_save_tls12( const mbedtls_ssl_session *session,
                                       unsigned char *buf,
                                       size_t buf_len );
+
 MBEDTLS_CHECK_RETURN_CRITICAL
 static int ssl_session_load_tls12( mbedtls_ssl_session *session,
                                    const unsigned char *buf,
@@ -1885,6 +1886,19 @@
 }
 
 #if defined(MBEDTLS_USE_PSA_CRYPTO) || defined(MBEDTLS_SSL_PROTO_TLS1_3)
+
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
+static size_t ssl_session_save_tls13( const mbedtls_ssl_session *session,
+                                      unsigned char *buf,
+                                      size_t buf_len )
+{
+    ((void) session);
+    ((void) buf);
+    ((void) buf_len);
+    return( 0 );
+}
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
+
 psa_status_t mbedtls_ssl_cipher_to_psa( mbedtls_cipher_type_t mbedtls_cipher_type,
                                     size_t taglen,
                                     psa_algorithm_t *alg,
@@ -2811,6 +2825,7 @@
 {
     unsigned char *p = buf;
     size_t used = 0;
+    size_t remaining_len;
 
     if( !omit_header )
     {
@@ -2838,17 +2853,25 @@
     }
 
     /* Forward to version-specific serialization routine. */
+    remaining_len = (buf_len >= used) ? buf_len - used : 0;
     switch( session->tls_version )
     {
 #if defined(MBEDTLS_SSL_PROTO_TLS1_2)
     case MBEDTLS_SSL_VERSION_TLS1_2:
     {
-        size_t remaining_len = used <= buf_len ? buf_len - used : 0;
         used += ssl_session_save_tls12( session, p, remaining_len );
         break;
     }
 #endif /* MBEDTLS_SSL_PROTO_TLS1_2 */
 
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
+    case MBEDTLS_SSL_VERSION_TLS1_3:
+    {
+        used += ssl_session_save_tls13( session, p, remaining_len );
+        break;
+    }
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
+
     default:
         return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE );
     }
diff --git a/library/ssl_tls12_client.c b/library/ssl_tls12_client.c
index 7fa6443..2405208 100644
--- a/library/ssl_tls12_client.c
+++ b/library/ssl_tls12_client.c
@@ -3627,7 +3627,7 @@
     if( ssl->state == MBEDTLS_SSL_SERVER_CHANGE_CIPHER_SPEC &&
         ssl->handshake->new_session_ticket != 0 )
     {
-        ssl->state = MBEDTLS_SSL_SERVER_NEW_SESSION_TICKET;
+        ssl->state = MBEDTLS_SSL_NEW_SESSION_TICKET;
     }
 #endif
 
@@ -3704,7 +3704,7 @@
         *        Finished
         */
 #if defined(MBEDTLS_SSL_SESSION_TICKETS)
-       case MBEDTLS_SSL_SERVER_NEW_SESSION_TICKET:
+       case MBEDTLS_SSL_NEW_SESSION_TICKET:
            ret = ssl_parse_new_session_ticket( ssl );
            break;
 #endif
diff --git a/library/ssl_tls13_client.c b/library/ssl_tls13_client.c
index 2b68306..e38f117 100644
--- a/library/ssl_tls13_client.c
+++ b/library/ssl_tls13_client.c
@@ -1218,17 +1218,17 @@
     {
         /* Only the pre_shared_key extension was received */
         case MBEDTLS_SSL_EXT_PRE_SHARED_KEY:
-            handshake->tls13_kex_modes = MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK;
+            handshake->key_exchange_mode = MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK;
             break;
 
         /* Only the key_share extension was received */
         case MBEDTLS_SSL_EXT_KEY_SHARE:
-            handshake->tls13_kex_modes = MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_EPHEMERAL;
+            handshake->key_exchange_mode = MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_EPHEMERAL;
             break;
 
         /* Both the pre_shared_key and key_share extensions were received */
         case ( MBEDTLS_SSL_EXT_PRE_SHARED_KEY | MBEDTLS_SSL_EXT_KEY_SHARE ):
-            handshake->tls13_kex_modes = MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK_EPHEMERAL;
+            handshake->key_exchange_mode = MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK_EPHEMERAL;
             break;
 
         /* Neither pre_shared_key nor key_share extension was received */
@@ -1477,7 +1477,7 @@
                                         buf, buf_len );
 
 #if defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
-    if( mbedtls_ssl_tls13_some_psk_enabled( ssl ) )
+    if( mbedtls_ssl_tls13_key_exchange_mode_with_psk( ssl ) )
         mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_SERVER_FINISHED );
     else
         mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_CERTIFICATE_REQUEST );
@@ -1512,12 +1512,6 @@
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
 
-    if( mbedtls_ssl_tls13_some_psk_enabled( ssl ) )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 3, ( "<= skip parse certificate request" ) );
-        return( SSL_CERTIFICATE_REQUEST_SKIP );
-    }
-
     if( ( ret = mbedtls_ssl_read_record( ssl, 0 ) ) != 0 )
     {
         MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_read_record", ret );
@@ -1876,6 +1870,243 @@
     return( 0 );
 }
 
+#if defined(MBEDTLS_SSL_SESSION_TICKETS)
+
+MBEDTLS_CHECK_RETURN_CRITICAL
+static int ssl_tls13_parse_new_session_ticket_exts( mbedtls_ssl_context *ssl,
+                                                    const unsigned char *buf,
+                                                    const unsigned char *end )
+{
+    const unsigned char *p = buf;
+
+    ((void) ssl);
+
+    while( p < end )
+    {
+        unsigned int extension_type;
+        size_t extension_data_len;
+
+        MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, 4 );
+        extension_type = MBEDTLS_GET_UINT16_BE( p, 0 );
+        extension_data_len = MBEDTLS_GET_UINT16_BE( p, 2 );
+        p += 4;
+
+        MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, extension_data_len );
+
+        switch( extension_type )
+        {
+            case MBEDTLS_TLS_EXT_EARLY_DATA:
+                MBEDTLS_SSL_DEBUG_MSG( 4, ( "early_data extension received" ) );
+                break;
+
+            default:
+                break;
+        }
+        p +=  extension_data_len;
+    }
+
+    return( 0 );
+}
+
+/*
+ * From RFC8446, page 74
+ *
+ * struct {
+ *    uint32 ticket_lifetime;
+ *    uint32 ticket_age_add;
+ *    opaque ticket_nonce<0..255>;
+ *    opaque ticket<1..2^16-1>;
+ *    Extension extensions<0..2^16-2>;
+ * } NewSessionTicket;
+ *
+ */
+MBEDTLS_CHECK_RETURN_CRITICAL
+static int ssl_tls13_parse_new_session_ticket( mbedtls_ssl_context *ssl,
+                                               unsigned char *buf,
+                                               unsigned char *end,
+                                               unsigned char **ticket_nonce,
+                                               size_t *ticket_nonce_len )
+{
+    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
+    unsigned char *p = buf;
+    mbedtls_ssl_session *session = ssl->session;
+    size_t ticket_len;
+    unsigned char *ticket;
+    size_t extensions_len;
+
+    *ticket_nonce = NULL;
+    *ticket_nonce_len = 0;
+    /*
+     *    ticket_lifetime   4 bytes
+     *    ticket_age_add    4 bytes
+     *    ticket_nonce_len  1 byte
+     */
+    MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, 9 );
+
+    session->ticket_lifetime = MBEDTLS_GET_UINT32_BE( p, 0 );
+    MBEDTLS_SSL_DEBUG_MSG( 3,
+                           ( "ticket_lifetime: %u",
+                             ( unsigned int )session->ticket_lifetime ) );
+
+    session->ticket_age_add = MBEDTLS_GET_UINT32_BE( p, 4 );
+    MBEDTLS_SSL_DEBUG_MSG( 3,
+                           ( "ticket_age_add: %u",
+                             ( unsigned int )session->ticket_age_add ) );
+
+    *ticket_nonce_len = p[8];
+    p += 9;
+
+    MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, *ticket_nonce_len );
+    *ticket_nonce = p;
+    MBEDTLS_SSL_DEBUG_BUF( 3, "ticket_nonce:", *ticket_nonce, *ticket_nonce_len );
+    p += *ticket_nonce_len;
+
+    /* Ticket */
+    MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, 2 );
+    ticket_len = MBEDTLS_GET_UINT16_BE( p, 0 );
+    p += 2;
+    MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, ticket_len );
+    MBEDTLS_SSL_DEBUG_BUF( 3, "received ticket", p, ticket_len ) ;
+
+    /* Check if we previously received a ticket already. */
+    if( session->ticket != NULL || session->ticket_len > 0 )
+    {
+        mbedtls_free( session->ticket );
+        session->ticket = NULL;
+        session->ticket_len = 0;
+    }
+
+    if( ( ticket = mbedtls_calloc( 1, ticket_len ) ) == NULL )
+    {
+        MBEDTLS_SSL_DEBUG_MSG( 1, ( "ticket alloc failed" ) );
+        return( MBEDTLS_ERR_SSL_ALLOC_FAILED );
+    }
+    memcpy( ticket, p, ticket_len );
+    p += ticket_len;
+    session->ticket = ticket;
+    session->ticket_len = ticket_len;
+
+    MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, 2 );
+    extensions_len = MBEDTLS_GET_UINT16_BE( p, 0 );
+    p += 2;
+    MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, extensions_len );
+
+    MBEDTLS_SSL_DEBUG_BUF( 3, "ticket extension", p, extensions_len );
+
+    ret = ssl_tls13_parse_new_session_ticket_exts( ssl, p, p + extensions_len );
+    if( ret != 0 )
+    {
+        MBEDTLS_SSL_DEBUG_RET( 1,
+                               "ssl_tls13_parse_new_session_ticket_exts",
+                               ret );
+        return( ret );
+    }
+
+    return( 0 );
+}
+
+MBEDTLS_CHECK_RETURN_CRITICAL
+static int ssl_tls13_postprocess_new_session_ticket( mbedtls_ssl_context *ssl,
+                                                     unsigned char *ticket_nonce,
+                                                     size_t ticket_nonce_len )
+{
+    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
+    mbedtls_ssl_session *session = ssl->session;
+    const mbedtls_ssl_ciphersuite_t *ciphersuite_info;
+    psa_algorithm_t psa_hash_alg;
+    int hash_length;
+
+#if defined(MBEDTLS_HAVE_TIME)
+    /* Store ticket creation time */
+    session->ticket_received = mbedtls_time( NULL );
+#endif
+
+    ciphersuite_info = mbedtls_ssl_ciphersuite_from_id( session->ciphersuite );
+    if( ciphersuite_info == NULL )
+    {
+        MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
+        return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
+    }
+
+    psa_hash_alg = mbedtls_psa_translate_md( ciphersuite_info->mac );
+    hash_length = PSA_HASH_LENGTH( psa_hash_alg );
+    if( hash_length == -1 ||
+        ( size_t )hash_length > sizeof( session->resumption_key ) )
+    {
+        return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
+    }
+
+
+    MBEDTLS_SSL_DEBUG_BUF( 3, "resumption_master_secret",
+                           session->app_secrets.resumption_master_secret,
+                           hash_length );
+
+    /* Compute resumption key
+     *
+     *  HKDF-Expand-Label( resumption_master_secret,
+     *                    "resumption", ticket_nonce, Hash.length )
+     */
+    ret = mbedtls_ssl_tls13_hkdf_expand_label(
+                    psa_hash_alg,
+                    session->app_secrets.resumption_master_secret,
+                    hash_length,
+                    MBEDTLS_SSL_TLS1_3_LBL_WITH_LEN( resumption ),
+                    ticket_nonce,
+                    ticket_nonce_len,
+                    session->resumption_key,
+                    hash_length );
+
+    if( ret != 0 )
+    {
+        MBEDTLS_SSL_DEBUG_RET( 2,
+                               "Creating the ticket-resumed PSK failed",
+                               ret );
+        return( ret );
+    }
+
+    session->resumption_key_len = hash_length;
+
+    MBEDTLS_SSL_DEBUG_BUF( 3, "Ticket-resumed PSK",
+                           session->resumption_key,
+                           session->resumption_key_len );
+
+    return( 0 );
+}
+
+/*
+ * Handler for MBEDTLS_SSL_NEW_SESSION_TICKET
+ */
+MBEDTLS_CHECK_RETURN_CRITICAL
+static int ssl_tls13_process_new_session_ticket( mbedtls_ssl_context *ssl )
+{
+    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
+    unsigned char *buf;
+    size_t buf_len;
+    unsigned char *ticket_nonce;
+    size_t ticket_nonce_len;
+
+    MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> parse new session ticket" ) );
+
+    MBEDTLS_SSL_PROC_CHK( mbedtls_ssl_tls13_fetch_handshake_msg(
+                              ssl, MBEDTLS_SSL_HS_NEW_SESSION_TICKET,
+                              &buf, &buf_len ) );
+
+    MBEDTLS_SSL_PROC_CHK( ssl_tls13_parse_new_session_ticket(
+                              ssl, buf, buf + buf_len,
+                              &ticket_nonce, &ticket_nonce_len ) );
+
+    MBEDTLS_SSL_PROC_CHK( ssl_tls13_postprocess_new_session_ticket(
+                              ssl, ticket_nonce, ticket_nonce_len ) );
+
+    mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_HANDSHAKE_OVER );
+
+cleanup:
+
+    MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= parse new session ticket" ) );
+    return( ret );
+}
+#endif /* MBEDTLS_SSL_SESSION_TICKETS */
+
 int mbedtls_ssl_tls13_handshake_client_step( mbedtls_ssl_context *ssl )
 {
     int ret = 0;
@@ -1956,6 +2187,15 @@
             break;
 #endif /* MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE */
 
+#if defined(MBEDTLS_SSL_SESSION_TICKETS)
+        case MBEDTLS_SSL_NEW_SESSION_TICKET:
+            ret = ssl_tls13_process_new_session_ticket( ssl );
+            if( ret != 0 )
+                break;
+            ret = MBEDTLS_ERR_SSL_RECEIVED_NEW_SESSION_TICKET;
+            break;
+#endif /* MBEDTLS_SSL_SESSION_TICKETS */
+
         default:
             MBEDTLS_SSL_DEBUG_MSG( 1, ( "invalid state %d", ssl->state ) );
             return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
diff --git a/library/ssl_tls13_keys.c b/library/ssl_tls13_keys.c
index 51743bb..c306d3c 100644
--- a/library/ssl_tls13_keys.c
+++ b/library/ssl_tls13_keys.c
@@ -1237,7 +1237,7 @@
      * client_handshake_traffic_secret and server_handshake_traffic_secret
      * are derived in the handshake secret derivation stage.
      */
-    if( mbedtls_ssl_tls13_ephemeral_enabled( ssl ) )
+    if( mbedtls_ssl_tls13_key_exchange_mode_with_ephemeral( ssl ) )
     {
         if( mbedtls_ssl_tls13_named_group_is_ecdhe( handshake->offered_group_id ) )
         {
diff --git a/library/ssl_tls13_server.c b/library/ssl_tls13_server.c
index 7c28c57..4a0d6d9 100644
--- a/library/ssl_tls13_server.c
+++ b/library/ssl_tls13_server.c
@@ -397,7 +397,7 @@
     if( !ssl_tls13_client_hello_has_exts_for_ephemeral_key_exchange( ssl ) )
         return( 0 );
 
-    ssl->handshake->tls13_kex_modes =
+    ssl->handshake->key_exchange_mode =
         MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_EPHEMERAL;
     return( 1 );
 }
@@ -585,6 +585,11 @@
      */
     ssl->tls_version = MBEDTLS_SSL_VERSION_TLS1_3;
 
+#if defined(MBEDTLS_SSL_SESSION_TICKETS)
+    /* Store minor version for later use with ticket serialization. */
+    ssl->session_negotiate->tls_version = MBEDTLS_SSL_VERSION_TLS1_3;
+#endif
+
     /* ...
      * Random random;
      * ...
@@ -1167,7 +1172,7 @@
      * of the HRR is then to transmit a cookie to force the client to demonstrate
      * reachability at their apparent network address (primarily useful for DTLS).
      */
-    if( ! mbedtls_ssl_tls13_some_ephemeral_enabled( ssl ) )
+    if( ! mbedtls_ssl_tls13_key_exchange_mode_with_ephemeral( ssl ) )
         return( 0 );
 
     /* We should only send the key_share extension if the client's initial
@@ -1555,7 +1560,7 @@
                               ssl, buf_len, msg_len ) );
 
 #if defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
-    if( mbedtls_ssl_tls13_some_psk_enabled( ssl ) )
+    if( mbedtls_ssl_tls13_key_exchange_mode_with_psk( ssl ) )
         mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_SERVER_FINISHED );
     else
         mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_CERTIFICATE_REQUEST );
@@ -1807,11 +1812,274 @@
     MBEDTLS_SSL_DEBUG_MSG( 2, ( "handshake: done" ) );
 
     mbedtls_ssl_tls13_handshake_wrapup( ssl );
+
+#if defined(MBEDTLS_SSL_SESSION_TICKETS)
+    mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_NEW_SESSION_TICKET );
+#else
     mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_HANDSHAKE_OVER );
+#endif
     return( 0 );
 }
 
 /*
+ * Handler for MBEDTLS_SSL_NEW_SESSION_TICKET
+ */
+#define SSL_NEW_SESSION_TICKET_SKIP  0
+#define SSL_NEW_SESSION_TICKET_WRITE 1
+MBEDTLS_CHECK_RETURN_CRITICAL
+static int ssl_tls13_write_new_session_ticket_coordinate( mbedtls_ssl_context *ssl )
+{
+    /* Check whether the use of session tickets is enabled */
+    if( ssl->conf->f_ticket_write == NULL )
+    {
+        MBEDTLS_SSL_DEBUG_MSG( 2, ( "new session ticket is not enabled" ) );
+        return( SSL_NEW_SESSION_TICKET_SKIP );
+    }
+
+    return( SSL_NEW_SESSION_TICKET_WRITE );
+}
+
+#if defined(MBEDTLS_SSL_SESSION_TICKETS)
+MBEDTLS_CHECK_RETURN_CRITICAL
+static int ssl_tls13_prepare_new_session_ticket( mbedtls_ssl_context *ssl,
+                                                 unsigned char *ticket_nonce,
+                                                 size_t ticket_nonce_size )
+{
+    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
+    mbedtls_ssl_session *session = ssl->session;
+    mbedtls_ssl_ciphersuite_t *ciphersuite_info;
+    psa_algorithm_t psa_hash_alg;
+    int hash_length;
+
+    MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> prepare NewSessionTicket msg" ) );
+
+#if defined(MBEDTLS_HAVE_TIME)
+    session->start = mbedtls_time( NULL );
+#endif
+
+    /* Generate ticket_age_add */
+    if( ( ret = ssl->conf->f_rng( ssl->conf->p_rng,
+                                  (unsigned char *) &session->ticket_age_add,
+                                  sizeof( session->ticket_age_add ) ) != 0 ) )
+    {
+        MBEDTLS_SSL_DEBUG_RET( 1, "generate_ticket_age_add", ret );
+        return( ret );
+    }
+    MBEDTLS_SSL_DEBUG_MSG( 3, ( "ticket_age_add: %u",
+                                (unsigned int)session->ticket_age_add ) );
+
+    /* Generate ticket_nonce */
+    ret = ssl->conf->f_rng( ssl->conf->p_rng, ticket_nonce, ticket_nonce_size );
+    if( ret != 0 )
+    {
+        MBEDTLS_SSL_DEBUG_RET( 1, "generate_ticket_nonce", ret );
+        return( ret );
+    }
+    MBEDTLS_SSL_DEBUG_BUF( 3, "ticket_nonce:",
+                           ticket_nonce, ticket_nonce_size );
+
+    ciphersuite_info =
+                (mbedtls_ssl_ciphersuite_t *) ssl->handshake->ciphersuite_info;
+    psa_hash_alg = mbedtls_psa_translate_md( ciphersuite_info->mac );
+    hash_length = PSA_HASH_LENGTH( psa_hash_alg );
+    if( hash_length == -1 ||
+        (size_t)hash_length > sizeof( session->resumption_key ) )
+    {
+        return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
+    }
+
+    /* In this code the psk key length equals the length of the hash */
+    session->resumption_key_len = hash_length;
+    session->ciphersuite = ciphersuite_info->id;
+
+    /* Compute resumption key
+     *
+     *  HKDF-Expand-Label( resumption_master_secret,
+     *                    "resumption", ticket_nonce, Hash.length )
+     */
+    ret = mbedtls_ssl_tls13_hkdf_expand_label(
+               psa_hash_alg,
+               session->app_secrets.resumption_master_secret,
+               hash_length,
+               MBEDTLS_SSL_TLS1_3_LBL_WITH_LEN( resumption ),
+               ticket_nonce,
+               ticket_nonce_size,
+               session->resumption_key,
+               hash_length );
+
+    if( ret != 0 )
+    {
+        MBEDTLS_SSL_DEBUG_RET( 2,
+                               "Creating the ticket-resumed PSK failed",
+                               ret );
+        return ( ret );
+    }
+    MBEDTLS_SSL_DEBUG_BUF( 3, "Ticket-resumed PSK",
+                           session->resumption_key,
+                           session->resumption_key_len );
+
+    MBEDTLS_SSL_DEBUG_BUF( 3, "resumption_master_secret",
+                           session->app_secrets.resumption_master_secret,
+                           hash_length );
+
+    return( 0 );
+}
+
+/* This function creates a NewSessionTicket message in the following format:
+ *
+ * struct {
+ *    uint32 ticket_lifetime;
+ *    uint32 ticket_age_add;
+ *    opaque ticket_nonce<0..255>;
+ *    opaque ticket<1..2^16-1>;
+ *    Extension extensions<0..2^16-2>;
+ * } NewSessionTicket;
+ *
+ * The ticket inside the NewSessionTicket message is an encrypted container
+ * carrying the necessary information so that the server is later able to
+ * re-start the communication.
+ *
+ * The following fields are placed inside the ticket by the
+ * f_ticket_write() function:
+ *
+ *  - creation time (start)
+ *  - flags (flags)
+ *  - age add (ticket_age_add)
+ *  - key (key)
+ *  - key length (key_len)
+ *  - ciphersuite (ciphersuite)
+ */
+MBEDTLS_CHECK_RETURN_CRITICAL
+static int ssl_tls13_write_new_session_ticket_body( mbedtls_ssl_context *ssl,
+                                                    unsigned char *buf,
+                                                    unsigned char *end,
+                                                    size_t *out_len,
+                                                    unsigned char *ticket_nonce,
+                                                    size_t ticket_nonce_size )
+{
+    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
+    unsigned char *p = buf;
+    mbedtls_ssl_session *session = ssl->session;
+    size_t ticket_len;
+    uint32_t ticket_lifetime;
+
+    *out_len = 0;
+    MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write NewSessionTicket msg" ) );
+
+    /*
+     *    ticket_lifetime   4 bytes
+     *    ticket_age_add    4 bytes
+     *    ticket_nonce      1 + ticket_nonce_size bytes
+     *    ticket            >=2 bytes
+     */
+    MBEDTLS_SSL_CHK_BUF_PTR( p, end, 4 + 4 + 1 + ticket_nonce_size + 2 );
+
+    /* Generate ticket and ticket_lifetime */
+    ret = ssl->conf->f_ticket_write( ssl->conf->p_ticket,
+                                     session,
+                                     p + 9 + ticket_nonce_size + 2,
+                                     end,
+                                     &ticket_len,
+                                     &ticket_lifetime);
+    if( ret != 0 )
+    {
+        MBEDTLS_SSL_DEBUG_RET( 1, "write_ticket", ret );
+        return( ret );
+    }
+    /* RFC 8446 4.6.1
+     *  ticket_lifetime:  Indicates the lifetime in seconds as a 32-bit
+     *      unsigned integer in network byte order from the time of ticket
+     *      issuance.  Servers MUST NOT use any value greater than
+     *      604800 seconds (7 days).  The value of zero indicates that the
+     *      ticket should be discarded immediately.  Clients MUST NOT cache
+     *      tickets for longer than 7 days, regardless of the ticket_lifetime,
+     *      and MAY delete tickets earlier based on local policy.  A server
+     *      MAY treat a ticket as valid for a shorter period of time than what
+     *      is stated in the ticket_lifetime.
+     */
+    ticket_lifetime %= 604800;
+    MBEDTLS_PUT_UINT32_BE( ticket_lifetime, p, 0 );
+    MBEDTLS_SSL_DEBUG_MSG( 3, ( "ticket_lifetime: %u",
+                                ( unsigned int )ticket_lifetime ) );
+
+    /* Write ticket_age_add */
+    MBEDTLS_PUT_UINT32_BE( session->ticket_age_add, p, 4 );
+    MBEDTLS_SSL_DEBUG_MSG( 3, ( "ticket_age_add: %u",
+                                ( unsigned int )session->ticket_age_add ) );
+
+    /* Write ticket_nonce */
+    p[8] = ( unsigned char )ticket_nonce_size;
+    if( ticket_nonce_size > 0 )
+    {
+        memcpy( p + 9, ticket_nonce, ticket_nonce_size );
+    }
+    p += 9 + ticket_nonce_size;
+
+    /* Write ticket */
+    MBEDTLS_PUT_UINT16_BE( ticket_len, p, 0 );
+    p += 2;
+    MBEDTLS_SSL_DEBUG_BUF( 4, "ticket", p, ticket_len);
+    p += ticket_len;
+
+    /* Ticket Extensions
+     *
+     * Note: We currently don't have any extensions.
+     * Set length to zero.
+     */
+    MBEDTLS_SSL_CHK_BUF_PTR( p, end, 2 );
+    MBEDTLS_PUT_UINT16_BE( 0, p, 0 );
+    p += 2;
+
+    *out_len = p - buf;
+    MBEDTLS_SSL_DEBUG_BUF( 4, "ticket", buf, *out_len );
+    MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write new session ticket" ) );
+
+    return( 0 );
+}
+
+/*
+ * Handler for MBEDTLS_SSL_NEW_SESSION_TICKET
+ */
+static int ssl_tls13_write_new_session_ticket( mbedtls_ssl_context *ssl )
+{
+    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
+
+    MBEDTLS_SSL_PROC_CHK_NEG( ssl_tls13_write_new_session_ticket_coordinate( ssl ) );
+
+    if( ret == SSL_NEW_SESSION_TICKET_WRITE )
+    {
+        unsigned char ticket_nonce[MBEDTLS_SSL_TLS1_3_TICKET_NONCE_LENGTH];
+        unsigned char *buf;
+        size_t buf_len, msg_len;
+
+        MBEDTLS_SSL_PROC_CHK( ssl_tls13_prepare_new_session_ticket(
+                                  ssl, ticket_nonce, sizeof( ticket_nonce ) ) );
+
+        MBEDTLS_SSL_PROC_CHK( mbedtls_ssl_start_handshake_msg( ssl,
+                MBEDTLS_SSL_HS_NEW_SESSION_TICKET, &buf, &buf_len ) );
+
+        MBEDTLS_SSL_PROC_CHK( ssl_tls13_write_new_session_ticket_body(
+                                  ssl, buf, buf + buf_len, &msg_len,
+                                  ticket_nonce, sizeof( ticket_nonce ) ) );
+
+        MBEDTLS_SSL_PROC_CHK( mbedtls_ssl_finish_handshake_msg(
+                                  ssl, buf_len, msg_len ) );
+
+        mbedtls_ssl_handshake_set_state( ssl,
+                                         MBEDTLS_SSL_NEW_SESSION_TICKET_FLUSH );
+    }
+    else
+    {
+        mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_HANDSHAKE_OVER );
+    }
+
+cleanup:
+
+    return( ret );
+}
+#endif /* MBEDTLS_SSL_SESSION_TICKETS */
+
+/*
  * TLS 1.3 State Machine -- server side
  */
 int mbedtls_ssl_tls13_handshake_server_step( mbedtls_ssl_context *ssl )
@@ -1931,6 +2199,27 @@
             }
             break;
 
+#if defined(MBEDTLS_SSL_SESSION_TICKETS)
+        case MBEDTLS_SSL_NEW_SESSION_TICKET:
+            ret = ssl_tls13_write_new_session_ticket( ssl );
+            if( ret != 0 )
+            {
+                MBEDTLS_SSL_DEBUG_RET( 1,
+                                       "ssl_tls13_write_new_session_ticket ",
+                                       ret );
+            }
+            break;
+        case MBEDTLS_SSL_NEW_SESSION_TICKET_FLUSH:
+            /* This state is necessary to do the flush of the New Session
+             * Ticket message written in MBEDTLS_SSL_NEW_SESSION_TICKET
+             * as part of ssl_prepare_handshake_step.
+             */
+            ret = 0;
+            mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_HANDSHAKE_OVER );
+            break;
+
+#endif /* MBEDTLS_SSL_SESSION_TICKETS */
+
         default:
             MBEDTLS_SSL_DEBUG_MSG( 1, ( "invalid state %d", ssl->state ) );
             return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE );
diff --git a/programs/ssl/ssl_client2.c b/programs/ssl/ssl_client2.c
index d6724df..e8b8b1e 100644
--- a/programs/ssl/ssl_client2.c
+++ b/programs/ssl/ssl_client2.c
@@ -2645,8 +2645,6 @@
     /*
      * 7. Read the HTTP response
      */
-    mbedtls_printf( "  < Read from server:" );
-    fflush( stdout );
 
     /*
      * TLS and DTLS need different reading styles (stream vs datagram)
@@ -2694,6 +2692,18 @@
                         ret = 0;
                         goto reconnect;
 
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
+
+#if defined(MBEDTLS_SSL_SESSION_TICKETS)
+                    case MBEDTLS_ERR_SSL_RECEIVED_NEW_SESSION_TICKET:
+                        /* We were waiting for application data but got
+                         * a NewSessionTicket instead. */
+                        mbedtls_printf( " got new session ticket.\n" );
+                        continue;
+#endif /* MBEDTLS_SSL_SESSION_TICKETS */
+
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
+
                     default:
                         mbedtls_printf( " mbedtls_ssl_read returned -0x%x\n",
                                         (unsigned int) -ret );
@@ -2703,8 +2713,8 @@
 
             len = ret;
             buf[len] = '\0';
-            mbedtls_printf( " %d bytes read\n\n%s", len, (char *) buf );
-
+            mbedtls_printf( "  < Read from server: %d bytes read\n\n%s", len, (char *) buf );
+            fflush( stdout );
             /* End of message should be detected according to the syntax of the
              * application protocol (eg HTTP), just use a dummy test here. */
             if( ret > 0 && buf[len-1] == '\n' )
@@ -2767,7 +2777,7 @@
 
         len = ret;
         buf[len] = '\0';
-        mbedtls_printf( " %d bytes read\n\n%s", len, (char *) buf );
+        mbedtls_printf( "  < Read from server: %d bytes read\n\n%s", len, (char *) buf );
         ret = 0;
     }
 
diff --git a/tests/ssl-opt.sh b/tests/ssl-opt.sh
index 68a2d77..797b821 100755
--- a/tests/ssl-opt.sh
+++ b/tests/ssl-opt.sh
@@ -12599,6 +12599,78 @@
             1 \
             -c "select_sig_alg_for_certificate_verify:no suitable signature algorithm found"
 
+requires_openssl_tls1_3
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_DEBUG_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
+requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
+run_test    "TLS 1.3: NewSessionTicket: Basic check, m->O" \
+            "$O_NEXT_SRV -msg -tls1_3 -no_resume_ephemeral -no_cache " \
+            "$P_CLI debug_level=4" \
+            0 \
+            -c "Protocol is TLSv1.3" \
+            -c "MBEDTLS_SSL_NEW_SESSION_TICKET" \
+            -c "got new session ticket." \
+            -c "HTTP/1.0 200 ok"
+
+requires_gnutls_tls1_3
+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
+run_test    "TLS 1.3: NewSessionTicket: Basic check, m->G" \
+            "$G_NEXT_SRV --priority=NORMAL:-VERS-ALL:+VERS-TLS1.3:+CIPHER-ALL --disable-client-cert" \
+            "$P_CLI debug_level=4" \
+            0 \
+            -c "Protocol is TLSv1.3" \
+            -c "MBEDTLS_SSL_NEW_SESSION_TICKET" \
+            -c "got new session ticket." \
+            -c "HTTP/1.0 200 OK"
+
+requires_openssl_tls1_3
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_SESSION_TICKETS
+requires_config_enabled MBEDTLS_SSL_SRV_C
+requires_config_enabled MBEDTLS_DEBUG_C
+run_test    "TLS 1.3: NewSessionTicket: Basic check, O->m" \
+            "$P_SRV debug_level=4 crt_file=data_files/server5.crt key_file=data_files/server5.key force_version=tls13 tickets=1" \
+            "$O_NEXT_CLI -msg -debug -tls1_3 -no_middlebox" \
+            0 \
+            -s "=> write NewSessionTicket msg" \
+            -s "server state: MBEDTLS_SSL_NEW_SESSION_TICKET" \
+            -s "server state: MBEDTLS_SSL_NEW_SESSION_TICKET_FLUSH"
+
+requires_gnutls_tls1_3
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_SESSION_TICKETS
+requires_config_enabled MBEDTLS_SSL_SRV_C
+requires_config_enabled MBEDTLS_DEBUG_C
+run_test    "TLS 1.3: NewSessionTicket: Basic check, G->m" \
+            "$P_SRV debug_level=4 crt_file=data_files/server5.crt key_file=data_files/server5.key force_version=tls13 tickets=1" \
+            "$G_NEXT_CLI localhost -d 4 --priority=NORMAL:-VERS-ALL:+VERS-TLS1.3:%DISABLE_TLS13_COMPAT_MODE -V" \
+            0 \
+            -s "=> write NewSessionTicket msg" \
+            -s "server state: MBEDTLS_SSL_NEW_SESSION_TICKET" \
+            -s "server state: MBEDTLS_SSL_NEW_SESSION_TICKET_FLUSH" \
+            -c "NEW SESSION TICKET (4) was received"
+
+requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
+requires_config_enabled MBEDTLS_SSL_SESSION_TICKETS
+requires_config_enabled MBEDTLS_SSL_SRV_C
+requires_config_enabled MBEDTLS_SSL_CLI_C
+requires_config_enabled MBEDTLS_DEBUG_C
+run_test    "TLS 1.3: NewSessionTicket: Basic check, m->m" \
+            "$P_SRV debug_level=4 crt_file=data_files/server5.crt key_file=data_files/server5.key force_version=tls13 tickets=1" \
+            "$P_CLI debug_level=4" \
+            0 \
+            -c "Protocol is TLSv1.3" \
+            -c "MBEDTLS_SSL_NEW_SESSION_TICKET" \
+            -c "got new session ticket." \
+            -c "HTTP/1.0 200 OK"    \
+            -s "=> write NewSessionTicket msg" \
+            -s "server state: MBEDTLS_SSL_NEW_SESSION_TICKET" \
+            -s "server state: MBEDTLS_SSL_NEW_SESSION_TICKET_FLUSH"
+
 # Test heap memory usage after handshake
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_2
 requires_config_enabled MBEDTLS_MEMORY_DEBUG
diff --git a/tests/suites/host_test.function b/tests/suites/host_test.function
index b9ea3d6..bb06822 100644
--- a/tests/suites/host_test.function
+++ b/tests/suites/host_test.function
@@ -590,6 +590,7 @@
              */
             test_files = &argv[ arg_index ];
             testfile_count = argc - arg_index;
+            break;
         }
 
         arg_index++;
diff --git a/tests/suites/test_suite_aes.ecb.data b/tests/suites/test_suite_aes.ecb.data
index 6349034..b468ac3 100644
--- a/tests/suites/test_suite_aes.ecb.data
+++ b/tests/suites/test_suite_aes.ecb.data
@@ -228,3 +228,6 @@
 
 AES-256-ECB Decrypt NIST KAT #12
 aes_decrypt_ecb:"0000000000000000000000000000000000000000000000000000000000000000":"9b80eefb7ebe2d2b16247aa0efc72f5d":"e0000000000000000000000000000000":0
+
+AES-256-ECB Copy Context NIST KAT #1
+aes_ecb_copy_context:"c1cc358b449909a19436cfbb3f852ef8bcb5ed12ac7058325f56e6099aab1a1c":"00000000000000000000000000000000"
diff --git a/tests/suites/test_suite_aes.function b/tests/suites/test_suite_aes.function
index 52af8e0..5ab265a 100644
--- a/tests/suites/test_suite_aes.function
+++ b/tests/suites/test_suite_aes.function
@@ -460,6 +460,36 @@
 }
 /* END_CASE */
 
+/* BEGIN_CASE */
+void aes_ecb_copy_context( data_t * key_str, data_t * src_str )
+{
+    unsigned char output1[16], output2[16], plain[16];
+    mbedtls_aes_context ctx1, ctx2, ctx3;
+
+    // Set key and encrypt with original context
+    mbedtls_aes_init( &ctx1 );
+    TEST_ASSERT( mbedtls_aes_setkey_enc( &ctx1, key_str->x,
+                                         key_str->len * 8 ) == 0 );
+    TEST_ASSERT( mbedtls_aes_crypt_ecb( &ctx1, MBEDTLS_AES_ENCRYPT,
+                                        src_str->x, output1 ) == 0 );
+
+    ctx2 = ctx1;
+    TEST_ASSERT( mbedtls_aes_setkey_dec( &ctx1, key_str->x,
+                                         key_str->len * 8 ) == 0 );
+    ctx3 = ctx1;
+    memset( &ctx1, 0, sizeof( ctx1 ) );
+
+    // Encrypt and decrypt with copied context
+    TEST_ASSERT( mbedtls_aes_crypt_ecb( &ctx2, MBEDTLS_AES_ENCRYPT,
+                                        src_str->x, output2 ) == 0 );
+    TEST_ASSERT( mbedtls_aes_crypt_ecb( &ctx3, MBEDTLS_AES_DECRYPT,
+                                        output1, plain ) == 0 );
+
+    TEST_ASSERT( mbedtls_test_hexcmp( output1, output2, 16, 16 ) == 0 );
+    TEST_ASSERT( mbedtls_test_hexcmp( src_str->x, plain, src_str->len, 16 ) == 0 );
+}
+/* END_CASE */
+
 /* BEGIN_CASE depends_on:MBEDTLS_SELF_TEST */
 void aes_selftest(  )
 {
diff --git a/tests/suites/test_suite_ssl.data b/tests/suites/test_suite_ssl.data
index 19a1ae6..34f4d66 100644
--- a/tests/suites/test_suite_ssl.data
+++ b/tests/suites/test_suite_ssl.data
@@ -223,7 +223,7 @@
 
 Negative test moving servers ssl to state: NEW_SESSION_TICKET
 depends_on:MBEDTLS_SSL_PROTO_TLS1_2
-move_handshake_to_state:MBEDTLS_SSL_IS_SERVER:MBEDTLS_SSL_SERVER_NEW_SESSION_TICKET:0
+move_handshake_to_state:MBEDTLS_SSL_IS_SERVER:MBEDTLS_SSL_NEW_SESSION_TICKET:0
 
 TLS 1.3:Test moving clients handshake to state: ENCRYPTED_EXTENSIONS
 depends_on:MBEDTLS_SSL_PROTO_TLS1_3:!MBEDTLS_SSL_PROTO_TLS1_2