diff --git a/include/mbedtls/ssl.h b/include/mbedtls/ssl.h
index 6dac3d1f1d..c8c1219651 100644
--- a/include/mbedtls/ssl.h
+++ b/include/mbedtls/ssl.h
@@ -1428,7 +1428,6 @@ struct mbedtls_ssl_config
                               *   configured, this has value \c 0.
                               */
 #endif /* MBEDTLS_USE_PSA_CRYPTO */
-
     unsigned char *MBEDTLS_PRIVATE(psk);      /*!< The raw pre-shared key. This field should
                               *   only be set via mbedtls_ssl_conf_psk().
                               *   If either no PSK or an opaque PSK
diff --git a/library/psa_crypto.c b/library/psa_crypto.c
index d58923dbdb..fa6800b4de 100644
--- a/library/psa_crypto.c
+++ b/library/psa_crypto.c
@@ -5371,7 +5371,6 @@ static psa_status_t psa_tls12_prf_psk_to_ms_set_key(
     *cur++ = MBEDTLS_BYTE_1( data_length );
     *cur++ = MBEDTLS_BYTE_0( data_length );
     memcpy( cur, data, data_length );
-    mbedtls_platform_zeroize( (void*) data, data_length );
     cur += data_length;
 
     status = psa_tls12_prf_set_key( prf, pms, cur - pms );
diff --git a/library/ssl_misc.h b/library/ssl_misc.h
index 4d8c479d46..c2c3cd2102 100644
--- a/library/ssl_misc.h
+++ b/library/ssl_misc.h
@@ -652,9 +652,11 @@ struct mbedtls_ssl_handshake_params
 #if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
     mbedtls_svc_key_id_t psk_opaque;            /*!< Opaque PSK from the callback   */
-#endif /* MBEDTLS_USE_PSA_CRYPTO */
+    uint8_t psk_opaque_is_internal;
+#else
     unsigned char *psk;                 /*!<  PSK from the callback         */
     size_t psk_len;                     /*!<  Length of PSK from callback   */
+#endif /* MBEDTLS_USE_PSA_CRYPTO */
 #endif /* MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED */
 
 #if defined(MBEDTLS_SSL_ECP_RESTARTABLE_ENABLED)
@@ -1305,12 +1307,34 @@ void mbedtls_ssl_add_hs_msg_to_checksum( mbedtls_ssl_context *ssl,
                                          size_t msg_len );
 
 #if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
+#if !defined(MBEDTLS_USE_PSA_CRYPTO)
 int mbedtls_ssl_psk_derive_premaster( mbedtls_ssl_context *ssl,
                                       mbedtls_key_exchange_type_t key_ex );
+#endif /* !MBEDTLS_USE_PSA_CRYPTO */
 #if defined(MBEDTLS_SSL_CLI_C) && defined(MBEDTLS_SSL_PROTO_TLS1_2)
 int mbedtls_ssl_conf_has_static_psk( mbedtls_ssl_config const *conf );
 #endif
 
+#if defined(MBEDTLS_USE_PSA_CRYPTO)
+/**
+ * Get the first defined opaque PSK by order of precedence:
+ * 1. handshake PSK set by \c mbedtls_ssl_set_hs_psk_opaque() in the PSK
+ *    callback
+ * 2. static PSK configured by \c mbedtls_ssl_conf_psk_opaque()
+ * Return an opaque PSK
+ */
+static inline mbedtls_svc_key_id_t mbedtls_ssl_get_opaque_psk(
+    const mbedtls_ssl_context *ssl )
+{
+    if( ! mbedtls_svc_key_id_is_null( ssl->handshake->psk_opaque ) )
+        return( ssl->handshake->psk_opaque );
+
+    if( ! mbedtls_svc_key_id_is_null( ssl->conf->psk_opaque ) )
+        return( ssl->conf->psk_opaque );
+
+    return( MBEDTLS_SVC_KEY_ID_INIT );
+}
+#else
 /**
  * Get the first defined PSK by order of precedence:
  * 1. handshake PSK set by \c mbedtls_ssl_set_hs_psk() in the PSK callback
@@ -1341,27 +1365,6 @@ static inline int mbedtls_ssl_get_psk( const mbedtls_ssl_context *ssl,
 
     return( 0 );
 }
-
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-/**
- * Get the first defined opaque PSK by order of precedence:
- * 1. handshake PSK set by \c mbedtls_ssl_set_hs_psk_opaque() in the PSK
- *    callback
- * 2. static PSK configured by \c mbedtls_ssl_conf_psk_opaque()
- * Return an opaque PSK
- */
-static inline mbedtls_svc_key_id_t mbedtls_ssl_get_opaque_psk(
-    const mbedtls_ssl_context *ssl )
-{
-    if( ! mbedtls_svc_key_id_is_null( ssl->handshake->psk_opaque ) )
-        return( ssl->handshake->psk_opaque );
-
-    if( ! mbedtls_svc_key_id_is_null( ssl->conf->psk_opaque ) )
-        return( ssl->conf->psk_opaque );
-
-    return( MBEDTLS_SVC_KEY_ID_INIT );
-}
-
 #endif /* MBEDTLS_USE_PSA_CRYPTO */
 
 #endif /* MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED */
diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index d187585376..ae697b169a 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -1528,7 +1528,6 @@ static int ssl_conf_psk_is_configured( mbedtls_ssl_config const *conf )
     if( !mbedtls_svc_key_id_is_null( conf->psk_opaque ) )
         return( 1 );
 #endif /* MBEDTLS_USE_PSA_CRYPTO */
-
     if( conf->psk != NULL )
         return( 1 );
 
@@ -1545,11 +1544,6 @@ static void ssl_conf_remove_psk( mbedtls_ssl_config *conf )
          * user's responsibility. */
         conf->psk_opaque = MBEDTLS_SVC_KEY_ID_INIT;
     }
-    /* This and the following branch should never
-     * be taken simultaenously as we maintain the
-     * invariant that raw and opaque PSKs are never
-     * configured simultaneously. As a safeguard,
-     * though, `else` is omitted here. */
 #endif /* MBEDTLS_USE_PSA_CRYPTO */
     if( conf->psk != NULL )
     {
@@ -1631,10 +1625,16 @@ static void ssl_remove_psk( mbedtls_ssl_context *ssl )
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
     if( ! mbedtls_svc_key_id_is_null( ssl->handshake->psk_opaque ) )
     {
+        /* The maintenance of the external PSK key slot is the
+         * user's responsibility. */
+        if( ssl->handshake->psk_opaque_is_internal )
+        {
+            psa_destroy_key( ssl->handshake->psk_opaque );
+            ssl->handshake->psk_opaque_is_internal = 0;
+        }
         ssl->handshake->psk_opaque = MBEDTLS_SVC_KEY_ID_INIT;
     }
-    else
-#endif /* MBEDTLS_USE_PSA_CRYPTO */
+#else
     if( ssl->handshake->psk != NULL )
     {
         mbedtls_platform_zeroize( ssl->handshake->psk,
@@ -1642,11 +1642,19 @@ static void ssl_remove_psk( mbedtls_ssl_context *ssl )
         mbedtls_free( ssl->handshake->psk );
         ssl->handshake->psk_len = 0;
     }
+#endif /* MBEDTLS_USE_PSA_CRYPTO */
 }
 
 int mbedtls_ssl_set_hs_psk( mbedtls_ssl_context *ssl,
                             const unsigned char *psk, size_t psk_len )
 {
+#if defined(MBEDTLS_USE_PSA_CRYPTO)
+    psa_key_attributes_t key_attributes = psa_key_attributes_init();
+    psa_status_t status;
+    psa_algorithm_t alg;
+    mbedtls_svc_key_id_t key;
+#endif /* MBEDTLS_USE_PSA_CRYPTO */
+
     if( psk == NULL || ssl->handshake == NULL )
         return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
 
@@ -1655,6 +1663,24 @@ int mbedtls_ssl_set_hs_psk( mbedtls_ssl_context *ssl,
 
     ssl_remove_psk( ssl );
 
+#if defined(MBEDTLS_USE_PSA_CRYPTO)
+    if( ssl->handshake->ciphersuite_info->mac == MBEDTLS_MD_SHA384)
+        alg = PSA_ALG_TLS12_PSK_TO_MS(PSA_ALG_SHA_384);
+    else
+        alg = PSA_ALG_TLS12_PSK_TO_MS(PSA_ALG_SHA_256);
+
+    psa_set_key_usage_flags( &key_attributes, PSA_KEY_USAGE_DERIVE );
+    psa_set_key_algorithm( &key_attributes, alg );
+    psa_set_key_type( &key_attributes, PSA_KEY_TYPE_DERIVE );
+
+    status = psa_import_key( &key_attributes, psk, psk_len, &key );
+    if( status != PSA_SUCCESS )
+        return( MBEDTLS_ERR_SSL_HW_ACCEL_FAILED );
+
+    /* Allow calling psa_destroy_key() on psk remove */
+    ssl->handshake->psk_opaque_is_internal = 1;
+    return mbedtls_ssl_set_hs_psk_opaque( ssl, key );
+#else
     if( ( ssl->handshake->psk = mbedtls_calloc( 1, psk_len ) ) == NULL )
         return( MBEDTLS_ERR_SSL_ALLOC_FAILED );
 
@@ -1662,6 +1688,7 @@ int mbedtls_ssl_set_hs_psk( mbedtls_ssl_context *ssl,
     memcpy( ssl->handshake->psk, psk, ssl->handshake->psk_len );
 
     return( 0 );
+#endif /* MBEDTLS_USE_PSA_CRYPTO */
 }
 
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
@@ -3231,11 +3258,25 @@ void mbedtls_ssl_handshake_free( mbedtls_ssl_context *ssl )
 #endif
 
 #if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
+#if defined(MBEDTLS_USE_PSA_CRYPTO)
+    if( ! mbedtls_svc_key_id_is_null( ssl->handshake->psk_opaque ) )
+    {
+        /* The maintenance of the external PSK key slot is the
+         * user's responsibility. */
+        if( ssl->handshake->psk_opaque_is_internal )
+        {
+            psa_destroy_key( ssl->handshake->psk_opaque );
+            ssl->handshake->psk_opaque_is_internal = 0;
+        }
+        ssl->handshake->psk_opaque = MBEDTLS_SVC_KEY_ID_INIT;
+    }
+#else
     if( handshake->psk != NULL )
     {
         mbedtls_platform_zeroize( handshake->psk, handshake->psk_len );
         mbedtls_free( handshake->psk );
     }
+#endif /* MBEDTLS_USE_PSA_CRYPTO */
 #endif
 
 #if defined(MBEDTLS_X509_CRT_PARSE_C) && \
@@ -4424,6 +4465,12 @@ void mbedtls_ssl_config_free( mbedtls_ssl_config *conf )
 #endif
 
 #if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
+#if defined(MBEDTLS_USE_PSA_CRYPTO)
+    if( ! mbedtls_svc_key_id_is_null( conf->psk_opaque ) )
+    {
+        conf->psk_opaque = MBEDTLS_SVC_KEY_ID_INIT;
+    }
+#endif /* MBEDTLS_USE_PSA_CRYPTO */
     if( conf->psk != NULL )
     {
         mbedtls_platform_zeroize( conf->psk, conf->psk_len );
@@ -4812,6 +4859,7 @@ int mbedtls_ssl_get_handshake_transcript( mbedtls_ssl_context *ssl,
 static psa_status_t setup_psa_key_derivation( psa_key_derivation_operation_t* derivation,
                                               mbedtls_svc_key_id_t key,
                                               psa_algorithm_t alg,
+                                              const unsigned char* raw_psk, size_t raw_psk_length,
                                               const unsigned char* seed, size_t seed_length,
                                               const unsigned char* label, size_t label_length,
                                               const unsigned char* other_secret,
@@ -4845,7 +4893,7 @@ static psa_status_t setup_psa_key_derivation( psa_key_derivation_operation_t* de
         {
             status = psa_key_derivation_input_bytes(
                 derivation, PSA_KEY_DERIVATION_INPUT_SECRET,
-                NULL, 0 );
+                raw_psk, raw_psk_length );
         }
         else
         {
@@ -4911,6 +4959,7 @@ static int tls_prf_generic( mbedtls_md_type_t md_type,
 
     status = setup_psa_key_derivation( &derivation,
                                        master_key, alg,
+                                       NULL, 0,
                                        random, rlen,
                                        (unsigned char const *) label,
                                        (size_t) strlen( label ),
@@ -5100,30 +5149,6 @@ static int ssl_set_handshake_prfs( mbedtls_ssl_handshake_params *handshake,
     return( 0 );
 }
 
-
-
-#if defined(MBEDTLS_USE_PSA_CRYPTO) &&                   \
-    defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED )
-static int ssl_use_opaque_psk( mbedtls_ssl_context const *ssl )
-{
-    if( ssl->conf->f_psk != NULL )
-    {
-        /* If we've used a callback to select the PSK,
-         * the static configuration is irrelevant. */
-        if( ! mbedtls_svc_key_id_is_null( ssl->handshake->psk_opaque ) )
-            return( 1 );
-
-        return( 0 );
-    }
-
-    if( ! mbedtls_svc_key_id_is_null( ssl->conf->psk_opaque ) )
-        return( 1 );
-
-    return( 0 );
-}
-#endif /* MBEDTLS_USE_PSA_CRYPTO &&
-          MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED */
-
 /*
  * Compute master secret if needed
  *
@@ -5196,8 +5221,7 @@ static int ssl_compute_master( mbedtls_ssl_handshake_params *handshake,
 
 #if defined(MBEDTLS_USE_PSA_CRYPTO) &&                   \
     defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
-    if( mbedtls_ssl_ciphersuite_uses_psk( handshake->ciphersuite_info ) == 1 &&
-        ssl_use_opaque_psk( ssl ) == 1 )
+    if( mbedtls_ssl_ciphersuite_uses_psk( handshake->ciphersuite_info ) == 1 )
     {
         /* Perform PSK-to-MS expansion in a single step. */
         psa_status_t status;
@@ -5240,6 +5264,7 @@ static int ssl_compute_master( mbedtls_ssl_handshake_params *handshake,
         }
 
         status = setup_psa_key_derivation( &derivation, psk, alg,
+                                           ssl->conf->psk, ssl->conf->psk_len,
                                            seed, seed_len,
                                            (unsigned char const *) lbl,
                                            (size_t) strlen( lbl ),
@@ -5472,7 +5497,8 @@ void ssl_calc_verify_tls_sha384( const mbedtls_ssl_context *ssl,
 }
 #endif /* MBEDTLS_SHA384_C */
 
-#if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
+#if !defined(MBEDTLS_USE_PSA_CRYPTO) &&                      \
+    defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
 int mbedtls_ssl_psk_derive_premaster( mbedtls_ssl_context *ssl, mbedtls_key_exchange_type_t key_ex )
 {
     unsigned char *p = ssl->handshake->premaster;
@@ -5481,11 +5507,6 @@ int mbedtls_ssl_psk_derive_premaster( mbedtls_ssl_context *ssl, mbedtls_key_exch
     size_t psk_len = 0;
     int psk_ret = mbedtls_ssl_get_psk( ssl, &psk, &psk_len );
 
-#if defined(MBEDTLS_USE_PSA_CRYPTO) &&                 \
-    defined(MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED)
-    (void) key_ex;
-#endif /* MBEDTLS_USE_PSA_CRYPTO && MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED */
-
     if( psk_ret == MBEDTLS_ERR_SSL_PRIVATE_KEY_REQUIRED )
     {
         /*
@@ -5560,19 +5581,10 @@ int mbedtls_ssl_psk_derive_premaster( mbedtls_ssl_context *ssl, mbedtls_key_exch
         p += 2 + len;
 
         MBEDTLS_SSL_DEBUG_MPI( 3, "DHM: K ", &ssl->handshake->dhm_ctx.K  );
-
-        /* For opaque PSK fill premaster with the the shared secret without PSK. */
-        if( psk_ret == MBEDTLS_ERR_SSL_PRIVATE_KEY_REQUIRED )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 1,
-                ( "skip PMS generation for opaque DHE-PSK" ) );
-            return( 0 );
-        }
     }
     else
 #endif /* MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED */
-#if !defined(MBEDTLS_USE_PSA_CRYPTO) &&                 \
-    defined(MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED)
+#if defined(MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED)
     if( key_ex == MBEDTLS_KEY_EXCHANGE_ECDHE_PSK )
     {
         int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
@@ -5593,7 +5605,7 @@ int mbedtls_ssl_psk_derive_premaster( mbedtls_ssl_context *ssl, mbedtls_key_exch
                                 MBEDTLS_DEBUG_ECDH_Z );
     }
     else
-#endif /* !MBEDTLS_USE_PSA_CRYPTO && MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED */
+#endif /* MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED */
     {
         MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
         return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
@@ -5616,7 +5628,7 @@ int mbedtls_ssl_psk_derive_premaster( mbedtls_ssl_context *ssl, mbedtls_key_exch
 
     return( 0 );
 }
-#endif /* MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED */
+#endif /* !MBEDTLS_USE_PSA_CRYPTO && MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED */
 
 #if defined(MBEDTLS_SSL_SRV_C) && defined(MBEDTLS_SSL_RENEGOTIATION)
 static int ssl_write_hello_request( mbedtls_ssl_context *ssl );
diff --git a/library/ssl_tls12_client.c b/library/ssl_tls12_client.c
index d286764c59..095db8f816 100644
--- a/library/ssl_tls12_client.c
+++ b/library/ssl_tls12_client.c
@@ -62,37 +62,16 @@ int mbedtls_ssl_conf_has_static_psk( mbedtls_ssl_config const *conf )
         return( 0 );
     }
 
-    if( conf->psk != NULL && conf->psk_len != 0 )
-        return( 1 );
-
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
     if( ! mbedtls_svc_key_id_is_null( conf->psk_opaque ) )
         return( 1 );
 #endif /* MBEDTLS_USE_PSA_CRYPTO */
 
-    return( 0 );
-}
-
-#if defined(MBEDTLS_USE_PSA_CRYPTO) && \
-    ( defined(MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED ) || \
-      defined(MBEDTLS_KEY_EXCHANGE_PSK_ENABLED) )
-static int ssl_conf_has_static_raw_psk( mbedtls_ssl_config const *conf )
-{
-    if( conf->psk_identity     == NULL ||
-        conf->psk_identity_len == 0     )
-    {
-        return( 0 );
-    }
-
     if( conf->psk != NULL && conf->psk_len != 0 )
         return( 1 );
 
     return( 0 );
 }
-#endif /* MBEDTLS_USE_PSA_CRYPTO &&
-          ( MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED ||
-            MBEDTLS_KEY_EXCHANGE_PSK_ENABLED ) */
-
 #endif /* MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED */
 
 #if defined(MBEDTLS_SSL_RENEGOTIATION)
@@ -3067,41 +3046,6 @@ ecdh_calc_secret:
         /* Write the ECDH computation length before the ECDH computation */
         MBEDTLS_PUT_UINT16_BE( zlen, pms, 0 );
         pms += zlen_size + zlen;
-
-        /* In case of opaque psk skip writting psk to pms.
-         * Opaque key will be handled later. */
-        if( ssl_conf_has_static_raw_psk( ssl->conf ) == 1 )
-        {
-            const unsigned char *psk = NULL;
-            size_t psk_len = 0;
-
-            if( mbedtls_ssl_get_psk( ssl, &psk, &psk_len )
-                    == MBEDTLS_ERR_SSL_PRIVATE_KEY_REQUIRED )
-                /*
-                * This should never happen because the existence of a PSK is always
-                * checked before calling this function
-                */
-                return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
-
-            /* opaque psk<0..2^16-1>; */
-            if( (size_t)( pms_end - pms ) < ( 2 + psk_len ) )
-                return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
-
-            /* Write the PSK length as uint16 */
-            MBEDTLS_PUT_UINT16_BE( psk_len, pms, 0 );
-            pms += 2;
-
-            /* Write the PSK itself */
-            memcpy( pms, psk, psk_len );
-            pms += psk_len;
-
-            ssl->handshake->pmslen = pms - ssl->handshake->premaster;
-        }
-        else
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 1,
-                ( "skip PMS generation for opaque ECDHE-PSK" ) );
-        }
     }
     else
 #endif /* MBEDTLS_USE_PSA_CRYPTO &&
@@ -3182,6 +3126,25 @@ ecdh_calc_secret:
                 MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_dhm_make_public", ret );
                 return( ret );
             }
+
+#if defined(MBEDTLS_USE_PSA_CRYPTO)
+            unsigned char *pms = ssl->handshake->premaster;
+            unsigned char *pms_end = pms + sizeof( ssl->handshake->premaster );
+            size_t pms_len;
+
+            /* Write length only when we know the actual value */
+            if( ( ret = mbedtls_dhm_calc_secret( &ssl->handshake->dhm_ctx,
+                                          pms + 2, pms_end - ( pms + 2 ), &pms_len,
+                                          ssl->conf->f_rng, ssl->conf->p_rng ) ) != 0 )
+            {
+                MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_dhm_calc_secret", ret );
+                return( ret );
+            }
+            MBEDTLS_PUT_UINT16_BE( pms_len, pms, 0 );
+            pms += 2 + pms_len;
+
+            MBEDTLS_SSL_DEBUG_MPI( 3, "DHM: K ", &ssl->handshake->dhm_ctx.K  );
+#endif
         }
         else
 #endif /* MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED */
@@ -3213,31 +3176,15 @@ ecdh_calc_secret:
             return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
         }
 
-#if defined(MBEDTLS_USE_PSA_CRYPTO) &&          \
-    defined(MBEDTLS_KEY_EXCHANGE_PSK_ENABLED)
-        if( ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_PSK &&
-            ssl_conf_has_static_raw_psk( ssl->conf ) == 0 )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 1,
-                ( "skip PMS generation for opaque PSK" ) );
-        }
-        else
-        if( ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_RSA_PSK &&
-            ssl_conf_has_static_raw_psk( ssl->conf ) == 0 )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 1,
-                ( "skip PMS generation for opaque RSA-PSK" ) );
-        }
-        else
-#endif /* MBEDTLS_USE_PSA_CRYPTO &&
-          MBEDTLS_KEY_EXCHANGE_PSK_ENABLED */
+#if !defined(MBEDTLS_USE_PSA_CRYPTO)
         if( ( ret = mbedtls_ssl_psk_derive_premaster( ssl,
                         ciphersuite_info->key_exchange ) ) != 0 )
         {
             MBEDTLS_SSL_DEBUG_RET( 1,
-                "mbedtls_ssl_psk_derive_premaster", ret );
+                    "mbedtls_ssl_psk_derive_premaster", ret );
             return( ret );
         }
+#endif /* !MBEDTLS_USE_PSA_CRYPTO */
     }
     else
 #endif /* MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED */
diff --git a/library/ssl_tls12_server.c b/library/ssl_tls12_server.c
index a60b5adbdc..a1505d16a1 100644
--- a/library/ssl_tls12_server.c
+++ b/library/ssl_tls12_server.c
@@ -160,43 +160,17 @@ static int ssl_conf_has_psk_or_cb( mbedtls_ssl_config const *conf )
     if( conf->psk_identity_len == 0 || conf->psk_identity == NULL )
         return( 0 );
 
-    if( conf->psk != NULL && conf->psk_len != 0 )
-        return( 1 );
 
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
     if( ! mbedtls_svc_key_id_is_null( conf->psk_opaque ) )
         return( 1 );
 #endif /* MBEDTLS_USE_PSA_CRYPTO */
 
-    return( 0 );
-}
-
-#if defined(MBEDTLS_USE_PSA_CRYPTO) && \
-    ( defined(MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED ) || \
-      defined(MBEDTLS_KEY_EXCHANGE_PSK_ENABLED) ||        \
-      defined(MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED) )
-static int ssl_use_opaque_psk( mbedtls_ssl_context const *ssl )
-{
-    if( ssl->conf->f_psk != NULL )
-    {
-        /* If we've used a callback to select the PSK,
-         * the static configuration is irrelevant. */
-
-        if( ! mbedtls_svc_key_id_is_null( ssl->handshake->psk_opaque ) )
-            return( 1 );
-
-        return( 0 );
-    }
-
-    if( ! mbedtls_svc_key_id_is_null( ssl->conf->psk_opaque ) )
+    if( conf->psk != NULL && conf->psk_len != 0 )
         return( 1 );
 
     return( 0 );
 }
-#endif /* MBEDTLS_USE_PSA_CRYPTO &&
-          ( MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED ||
-            MBEDTLS_KEY_EXCHANGE_PSK_ENABLED ||
-            MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED) */
 #endif /* MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED */
 
 static int ssl_parse_renegotiation_info( mbedtls_ssl_context *ssl,
@@ -4009,19 +3983,14 @@ static int ssl_parse_client_key_exchange( mbedtls_ssl_context *ssl )
             return( MBEDTLS_ERR_SSL_DECODE_ERROR );
         }
 
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-        /* For opaque PSKs, we perform the PSK-to-MS derivation atomatically
-         * and skip the intermediate PMS. */
-        if( ssl_use_opaque_psk( ssl ) == 1 )
-            MBEDTLS_SSL_DEBUG_MSG( 1, ( "skip PMS generation for opaque PSK" ) );
-        else
-#endif /* MBEDTLS_USE_PSA_CRYPTO */
+#if !defined(MBEDTLS_USE_PSA_CRYPTO)
         if( ( ret = mbedtls_ssl_psk_derive_premaster( ssl,
                         ciphersuite_info->key_exchange ) ) != 0 )
         {
             MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_psk_derive_premaster", ret );
             return( ret );
         }
+#endif /* !MBEDTLS_USE_PSA_CRYPTO */
     }
     else
 #endif /* MBEDTLS_KEY_EXCHANGE_PSK_ENABLED */
@@ -4053,19 +4022,14 @@ static int ssl_parse_client_key_exchange( mbedtls_ssl_context *ssl )
             return( ret );
         }
 
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-        /* For opaque PSKs, we perform the PSK-to-MS derivation automatically
-         * and skip the intermediate PMS. */
-        if( ssl_use_opaque_psk( ssl ) == 1 )
-            MBEDTLS_SSL_DEBUG_MSG( 1, ( "skip PMS generation for opaque RSA-PSK" ) );
-        else
-#endif /* MBEDTLS_USE_PSA_CRYPTO */
+#if !defined(MBEDTLS_USE_PSA_CRYPTO)
         if( ( ret = mbedtls_ssl_psk_derive_premaster( ssl,
                         ciphersuite_info->key_exchange ) ) != 0 )
         {
             MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_psk_derive_premaster", ret );
             return( ret );
         }
+#endif /* !MBEDTLS_USE_PSA_CRYPTO */
     }
     else
 #endif /* MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED */
@@ -4089,12 +4053,31 @@ static int ssl_parse_client_key_exchange( mbedtls_ssl_context *ssl )
             return( MBEDTLS_ERR_SSL_DECODE_ERROR );
         }
 
+#if defined(MBEDTLS_USE_PSA_CRYPTO)
+        unsigned char *pms = ssl->handshake->premaster;
+        unsigned char *pms_end = pms + sizeof( ssl->handshake->premaster );
+        size_t pms_len;
+
+        /* Write length only when we know the actual value */
+        if( ( ret = mbedtls_dhm_calc_secret( &ssl->handshake->dhm_ctx,
+                                      pms + 2, pms_end - ( pms + 2 ), &pms_len,
+                                      ssl->conf->f_rng, ssl->conf->p_rng ) ) != 0 )
+        {
+            MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_dhm_calc_secret", ret );
+            return( ret );
+        }
+        MBEDTLS_PUT_UINT16_BE( pms_len, pms, 0 );
+        pms += 2 + pms_len;
+
+        MBEDTLS_SSL_DEBUG_MPI( 3, "DHM: K ", &ssl->handshake->dhm_ctx.K  );
+#else
         if( ( ret = mbedtls_ssl_psk_derive_premaster( ssl,
                         ciphersuite_info->key_exchange ) ) != 0 )
         {
             MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_psk_derive_premaster", ret );
             return( ret );
         }
+#endif /* MBEDTLS_USE_PSA_CRYPTO */
     }
     else
 #endif /* MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED */
@@ -4175,40 +4158,6 @@ static int ssl_parse_client_key_exchange( mbedtls_ssl_context *ssl )
         MBEDTLS_PUT_UINT16_BE( zlen, psm, 0 );
         psm += zlen_size + zlen;
 
-        const unsigned char *psk = NULL;
-        size_t psk_len = 0;
-
-        /* In case of opaque psk skip writting psk to pms.
-         * Opaque key will be handled later. */
-        if( ssl_use_opaque_psk( ssl ) == 0 )
-        {
-            if( mbedtls_ssl_get_psk( ssl, &psk, &psk_len )
-                    == MBEDTLS_ERR_SSL_PRIVATE_KEY_REQUIRED )
-                /*
-                * This should never happen because the existence of a PSK is always
-                * checked before calling this function
-                */
-                return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
-
-            /* opaque psk<0..2^16-1>; */
-            if( (size_t)( psm_end - psm ) < ( 2 + psk_len ) )
-                return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
-
-            /* Write the PSK length as uint16 */
-            MBEDTLS_PUT_UINT16_BE( psk_len, psm, 0 );
-            psm += 2;
-
-            /* Write the PSK itself */
-            memcpy( psm, psk, psk_len );
-            psm += psk_len;
-
-            ssl->handshake->pmslen = psm - ssl->handshake->premaster;
-        }
-        else
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 1,
-                ( "skip PMS generation for opaque ECDHE-PSK" ) );
-        }
 #else /* MBEDTLS_USE_PSA_CRYPTO */
         if( ( ret = ssl_parse_client_psk_identity( ssl, &p, end ) ) != 0 )
         {
diff --git a/tests/ssl-opt.sh b/tests/ssl-opt.sh
index 591b6d39ff..754d669f4e 100755
--- a/tests/ssl-opt.sh
+++ b/tests/ssl-opt.sh
@@ -6399,8 +6399,6 @@ run_test    "PSK callback: opaque psk on client, no callback" \
             "$P_CLI extended_ms=0 debug_level=1 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA \
             psk_identity=foo psk=abc123 psk_opaque=1" \
             0 \
-            -c "skip PMS generation for opaque PSK"\
-            -S "skip PMS generation for opaque PSK"\
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
             -S "SSL - The handshake negotiation failed" \
@@ -6414,8 +6412,6 @@ run_test    "PSK callback: opaque psk on client, no callback, SHA-384" \
             "$P_CLI extended_ms=0 debug_level=1 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-256-CBC-SHA384 \
             psk_identity=foo psk=abc123 psk_opaque=1" \
             0 \
-            -c "skip PMS generation for opaque PSK"\
-            -S "skip PMS generation for opaque PSK"\
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
             -S "SSL - The handshake negotiation failed" \
@@ -6429,8 +6425,6 @@ run_test    "PSK callback: opaque psk on client, no callback, EMS" \
             "$P_CLI extended_ms=1 debug_level=3 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA \
             psk_identity=foo psk=abc123 psk_opaque=1" \
             0 \
-            -c "skip PMS generation for opaque PSK"\
-            -S "skip PMS generation for opaque PSK"\
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
             -S "SSL - The handshake negotiation failed" \
@@ -6444,8 +6438,6 @@ run_test    "PSK callback: opaque psk on client, no callback, SHA-384, EMS" \
             "$P_CLI extended_ms=1 debug_level=3 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-256-CBC-SHA384 \
             psk_identity=foo psk=abc123 psk_opaque=1" \
             0 \
-            -c "skip PMS generation for opaque PSK"\
-            -S "skip PMS generation for opaque PSK"\
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
             -S "SSL - The handshake negotiation failed" \
@@ -6459,8 +6451,6 @@ run_test    "PSK callback: opaque rsa-psk on client, no callback" \
             "$P_CLI extended_ms=0 debug_level=1 min_version=tls12 force_ciphersuite=TLS-RSA-PSK-WITH-AES-128-CBC-SHA256 \
             psk_identity=foo psk=abc123 psk_opaque=1" \
             0 \
-            -c "skip PMS generation for opaque RSA-PSK"\
-            -S "skip PMS generation for opaque RSA-PSK"\
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
             -S "SSL - The handshake negotiation failed" \
@@ -6474,8 +6464,6 @@ run_test    "PSK callback: opaque rsa-psk on client, no callback, SHA-384" \
             "$P_CLI extended_ms=0 debug_level=1 min_version=tls12 force_ciphersuite=TLS-RSA-PSK-WITH-AES-256-CBC-SHA384 \
             psk_identity=foo psk=abc123 psk_opaque=1" \
             0 \
-            -c "skip PMS generation for opaque RSA-PSK"\
-            -S "skip PMS generation for opaque RSA-PSK"\
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
             -S "SSL - The handshake negotiation failed" \
@@ -6489,8 +6477,6 @@ run_test    "PSK callback: opaque rsa-psk on client, no callback, EMS" \
             "$P_CLI extended_ms=1 debug_level=3 min_version=tls12 force_ciphersuite=TLS-RSA-PSK-WITH-AES-128-CBC-SHA \
             psk_identity=foo psk=abc123 psk_opaque=1" \
             0 \
-            -c "skip PMS generation for opaque RSA-PSK"\
-            -S "skip PMS generation for opaque RSA-PSK"\
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
             -S "SSL - The handshake negotiation failed" \
@@ -6504,8 +6490,6 @@ run_test    "PSK callback: opaque rsa-psk on client, no callback, SHA-384, EMS"
             "$P_CLI extended_ms=1 debug_level=3 min_version=tls12 force_ciphersuite=TLS-RSA-PSK-WITH-AES-256-CBC-SHA384 \
             psk_identity=foo psk=abc123 psk_opaque=1" \
             0 \
-            -c "skip PMS generation for opaque RSA-PSK"\
-            -S "skip PMS generation for opaque RSA-PSK"\
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
             -S "SSL - The handshake negotiation failed" \
@@ -6519,8 +6503,6 @@ run_test    "PSK callback: opaque ecdhe-psk on client, no callback" \
             "$P_CLI extended_ms=0 debug_level=1 min_version=tls12 force_ciphersuite=TLS-ECDHE-PSK-WITH-AES-128-CBC-SHA256 \
             psk_identity=foo psk=abc123 psk_opaque=1" \
             0 \
-            -c "skip PMS generation for opaque ECDHE-PSK"\
-            -S "skip PMS generation for opaque ECDHE-PSK"\
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
             -S "SSL - The handshake negotiation failed" \
@@ -6534,8 +6516,6 @@ run_test    "PSK callback: opaque ecdhe-psk on client, no callback, SHA-384" \
             "$P_CLI extended_ms=0 debug_level=1 min_version=tls12 force_ciphersuite=TLS-ECDHE-PSK-WITH-AES-256-CBC-SHA384 \
             psk_identity=foo psk=abc123 psk_opaque=1" \
             0 \
-            -c "skip PMS generation for opaque ECDHE-PSK"\
-            -S "skip PMS generation for opaque ECDHE-PSK"\
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
             -S "SSL - The handshake negotiation failed" \
@@ -6549,8 +6529,6 @@ run_test    "PSK callback: opaque ecdhe-psk on client, no callback, EMS" \
             "$P_CLI extended_ms=1 debug_level=3 min_version=tls12 force_ciphersuite=TLS-ECDHE-PSK-WITH-AES-128-CBC-SHA \
             psk_identity=foo psk=abc123 psk_opaque=1" \
             0 \
-            -c "skip PMS generation for opaque ECDHE-PSK"\
-            -S "skip PMS generation for opaque ECDHE-PSK"\
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
             -S "SSL - The handshake negotiation failed" \
@@ -6564,8 +6542,6 @@ run_test    "PSK callback: opaque ecdhe-psk on client, no callback, SHA-384, EMS
             "$P_CLI extended_ms=1 debug_level=3 min_version=tls12 force_ciphersuite=TLS-ECDHE-PSK-WITH-AES-256-CBC-SHA384 \
             psk_identity=foo psk=abc123 psk_opaque=1" \
             0 \
-            -c "skip PMS generation for opaque ECDHE-PSK"\
-            -S "skip PMS generation for opaque ECDHE-PSK"\
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
             -S "SSL - The handshake negotiation failed" \
@@ -6579,8 +6555,6 @@ run_test    "PSK callback: opaque dhe-psk on client, no callback" \
             "$P_CLI extended_ms=0 debug_level=1 min_version=tls12 force_ciphersuite=TLS-DHE-PSK-WITH-AES-128-CBC-SHA256 \
             psk_identity=foo psk=abc123 psk_opaque=1" \
             0 \
-            -c "skip PMS generation for opaque DHE-PSK"\
-            -S "skip PMS generation for opaque DHE-PSK"\
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
             -S "SSL - The handshake negotiation failed" \
@@ -6594,8 +6568,6 @@ run_test    "PSK callback: opaque dhe-psk on client, no callback, SHA-384" \
             "$P_CLI extended_ms=0 debug_level=1 min_version=tls12 force_ciphersuite=TLS-DHE-PSK-WITH-AES-256-CBC-SHA384 \
             psk_identity=foo psk=abc123 psk_opaque=1" \
             0 \
-            -c "skip PMS generation for opaque DHE-PSK"\
-            -S "skip PMS generation for opaque DHE-PSK"\
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
             -S "SSL - The handshake negotiation failed" \
@@ -6609,8 +6581,6 @@ run_test    "PSK callback: opaque dhe-psk on client, no callback, EMS" \
             "$P_CLI extended_ms=1 debug_level=3 min_version=tls12 force_ciphersuite=TLS-DHE-PSK-WITH-AES-128-CBC-SHA \
             psk_identity=foo psk=abc123 psk_opaque=1" \
             0 \
-            -c "skip PMS generation for opaque DHE-PSK"\
-            -S "skip PMS generation for opaque DHE-PSK"\
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
             -S "SSL - The handshake negotiation failed" \
@@ -6624,8 +6594,6 @@ run_test    "PSK callback: opaque dhe-psk on client, no callback, SHA-384, EMS"
             "$P_CLI extended_ms=1 debug_level=3 min_version=tls12 force_ciphersuite=TLS-DHE-PSK-WITH-AES-256-CBC-SHA384 \
             psk_identity=foo psk=abc123 psk_opaque=1" \
             0 \
-            -c "skip PMS generation for opaque DHE-PSK"\
-            -S "skip PMS generation for opaque DHE-PSK"\
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
             -S "SSL - The handshake negotiation failed" \
@@ -6639,8 +6607,6 @@ run_test    "PSK callback: raw psk on client, static opaque on server, no callba
             "$P_CLI extended_ms=0 debug_level=1 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA \
             psk_identity=foo psk=abc123" \
             0 \
-            -C "skip PMS generation for opaque PSK"\
-            -s "skip PMS generation for opaque PSK"\
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
             -S "SSL - The handshake negotiation failed" \
@@ -6654,8 +6620,6 @@ run_test    "PSK callback: raw psk on client, static opaque on server, no callba
             "$P_CLI extended_ms=0 debug_level=1 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-256-CBC-SHA384 \
             psk_identity=foo psk=abc123" \
             0 \
-            -C "skip PMS generation for opaque PSK"\
-            -s "skip PMS generation for opaque PSK"\
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
             -S "SSL - The handshake negotiation failed" \
@@ -6672,8 +6636,6 @@ run_test    "PSK callback: raw psk on client, static opaque on server, no callba
             0 \
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
-            -C "skip PMS generation for opaque PSK"\
-            -s "skip PMS generation for opaque PSK"\
             -S "SSL - The handshake negotiation failed" \
             -S "SSL - Unknown identity received" \
             -S "SSL - Verification of the message MAC failed"
@@ -6688,8 +6650,6 @@ run_test    "PSK callback: raw psk on client, static opaque on server, no callba
             0 \
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
-            -C "skip PMS generation for opaque PSK"\
-            -s "skip PMS generation for opaque PSK"\
             -S "SSL - The handshake negotiation failed" \
             -S "SSL - Unknown identity received" \
             -S "SSL - Verification of the message MAC failed"
@@ -6701,8 +6661,6 @@ run_test    "PSK callback: raw rsa-psk on client, static opaque on server, no ca
             "$P_CLI extended_ms=0 debug_level=5 min_version=tls12 force_ciphersuite=TLS-RSA-PSK-WITH-AES-128-CBC-SHA \
             psk_identity=foo psk=abc123" \
             0 \
-            -C "skip PMS generation for opaque RSA-PSK"\
-            -s "skip PMS generation for opaque RSA-PSK"\
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
             -S "SSL - The handshake negotiation failed" \
@@ -6716,8 +6674,6 @@ run_test    "PSK callback: raw rsa-psk on client, static opaque on server, no ca
             "$P_CLI extended_ms=0 debug_level=1 min_version=tls12 force_ciphersuite=TLS-RSA-PSK-WITH-AES-256-CBC-SHA384 \
             psk_identity=foo psk=abc123" \
             0 \
-            -C "skip PMS generation for opaque RSA-PSK"\
-            -s "skip PMS generation for opaque RSA-PSK"\
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
             -S "SSL - The handshake negotiation failed" \
@@ -6734,8 +6690,6 @@ run_test    "PSK callback: raw rsa-psk on client, static opaque on server, no ca
             0 \
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
-            -C "skip PMS generation for opaque RSA-PSK"\
-            -s "skip PMS generation for opaque RSA-PSK"\
             -S "SSL - The handshake negotiation failed" \
             -S "SSL - Unknown identity received" \
             -S "SSL - Verification of the message MAC failed"
@@ -6750,8 +6704,6 @@ run_test    "PSK callback: raw rsa-psk on client, static opaque on server, no ca
             0 \
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
-            -C "skip PMS generation for opaque RSA-PSK"\
-            -s "skip PMS generation for opaque RSA-PSK"\
             -S "SSL - The handshake negotiation failed" \
             -S "SSL - Unknown identity received" \
             -S "SSL - Verification of the message MAC failed"
@@ -6763,8 +6715,6 @@ run_test    "PSK callback: raw ecdhe-psk on client, static opaque on server, no
             "$P_CLI extended_ms=0 debug_level=5 min_version=tls12 force_ciphersuite=TLS-ECDHE-PSK-WITH-AES-128-CBC-SHA \
             psk_identity=foo psk=abc123" \
             0 \
-            -C "skip PMS generation for opaque ECDHE-PSK"\
-            -s "skip PMS generation for opaque ECDHE-PSK"\
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
             -S "SSL - The handshake negotiation failed" \
@@ -6778,8 +6728,6 @@ run_test    "PSK callback: raw ecdhe-psk on client, static opaque on server, no
             "$P_CLI extended_ms=0 debug_level=1 min_version=tls12 force_ciphersuite=TLS-ECDHE-PSK-WITH-AES-256-CBC-SHA384 \
             psk_identity=foo psk=abc123" \
             0 \
-            -C "skip PMS generation for opaque ECDHE-PSK"\
-            -s "skip PMS generation for opaque ECDHE-PSK"\
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
             -S "SSL - The handshake negotiation failed" \
@@ -6796,8 +6744,6 @@ run_test    "PSK callback: raw ecdhe-psk on client, static opaque on server, no
             0 \
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
-            -C "skip PMS generation for opaque ECDHE-PSK"\
-            -s "skip PMS generation for opaque ECDHE-PSK"\
             -S "SSL - The handshake negotiation failed" \
             -S "SSL - Unknown identity received" \
             -S "SSL - Verification of the message MAC failed"
@@ -6812,8 +6758,6 @@ run_test    "PSK callback: raw ecdhe-psk on client, static opaque on server, no
             0 \
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
-            -C "skip PMS generation for opaque ECDHE-PSK"\
-            -s "skip PMS generation for opaque ECDHE-PSK"\
             -S "SSL - The handshake negotiation failed" \
             -S "SSL - Unknown identity received" \
             -S "SSL - Verification of the message MAC failed"
@@ -6825,8 +6769,6 @@ run_test    "PSK callback: raw dhe-psk on client, static opaque on server, no ca
             "$P_CLI extended_ms=0 debug_level=5 min_version=tls12 force_ciphersuite=TLS-DHE-PSK-WITH-AES-128-CBC-SHA \
             psk_identity=foo psk=abc123" \
             0 \
-            -C "skip PMS generation for opaque DHE-PSK"\
-            -s "skip PMS generation for opaque DHE-PSK"\
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
             -S "SSL - The handshake negotiation failed" \
@@ -6840,8 +6782,6 @@ run_test    "PSK callback: raw dhe-psk on client, static opaque on server, no ca
             "$P_CLI extended_ms=0 debug_level=1 min_version=tls12 force_ciphersuite=TLS-DHE-PSK-WITH-AES-256-CBC-SHA384 \
             psk_identity=foo psk=abc123" \
             0 \
-            -C "skip PMS generation for opaque DHE-PSK"\
-            -s "skip PMS generation for opaque DHE-PSK"\
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
             -S "SSL - The handshake negotiation failed" \
@@ -6858,8 +6798,6 @@ run_test    "PSK callback: raw dhe-psk on client, static opaque on server, no ca
             0 \
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
-            -C "skip PMS generation for opaque DHE-PSK"\
-            -s "skip PMS generation for opaque DHE-PSK"\
             -S "SSL - The handshake negotiation failed" \
             -S "SSL - Unknown identity received" \
             -S "SSL - Verification of the message MAC failed"
@@ -6874,8 +6812,6 @@ run_test    "PSK callback: raw dhe-psk on client, static opaque on server, no ca
             0 \
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
-            -C "skip PMS generation for opaque DHE-PSK"\
-            -s "skip PMS generation for opaque DHE-PSK"\
             -S "SSL - The handshake negotiation failed" \
             -S "SSL - Unknown identity received" \
             -S "SSL - Verification of the message MAC failed"
@@ -6887,8 +6823,6 @@ run_test    "PSK callback: raw psk on client, no static PSK on server, opaque PS
             "$P_CLI extended_ms=0 debug_level=3 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA \
             psk_identity=def psk=beef" \
             0 \
-            -C "skip PMS generation for opaque PSK"\
-            -s "skip PMS generation for opaque PSK"\
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
             -S "SSL - The handshake negotiation failed" \
@@ -6902,8 +6836,6 @@ run_test    "PSK callback: raw psk on client, no static PSK on server, opaque PS
             "$P_CLI extended_ms=0 debug_level=3 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-256-CBC-SHA384 \
             psk_identity=def psk=beef" \
             0 \
-            -C "skip PMS generation for opaque PSK"\
-            -s "skip PMS generation for opaque PSK"\
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
             -S "SSL - The handshake negotiation failed" \
@@ -6920,8 +6852,6 @@ run_test    "PSK callback: raw psk on client, no static PSK on server, opaque PS
             0 \
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
-            -C "skip PMS generation for opaque PSK"\
-            -s "skip PMS generation for opaque PSK"\
             -S "SSL - The handshake negotiation failed" \
             -S "SSL - Unknown identity received" \
             -S "SSL - Verification of the message MAC failed"
@@ -6936,8 +6866,6 @@ run_test    "PSK callback: raw psk on client, no static PSK on server, opaque PS
             0 \
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
-            -C "skip PMS generation for opaque PSK"\
-            -s "skip PMS generation for opaque PSK"\
             -S "SSL - The handshake negotiation failed" \
             -S "SSL - Unknown identity received" \
             -S "SSL - Verification of the message MAC failed"
@@ -6949,8 +6877,6 @@ run_test    "PSK callback: raw rsa-psk on client, no static RSA-PSK on server, o
             "$P_CLI extended_ms=0 debug_level=3 min_version=tls12 force_ciphersuite=TLS-RSA-PSK-WITH-AES-128-CBC-SHA \
             psk_identity=def psk=beef" \
             0 \
-            -C "skip PMS generation for opaque RSA-PSK"\
-            -s "skip PMS generation for opaque RSA-PSK"\
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
             -S "SSL - The handshake negotiation failed" \
@@ -6964,8 +6890,6 @@ run_test    "PSK callback: raw rsa-psk on client, no static RSA-PSK on server, o
             "$P_CLI extended_ms=0 debug_level=3 min_version=tls12 force_ciphersuite=TLS-RSA-PSK-WITH-AES-256-CBC-SHA384 \
             psk_identity=def psk=beef" \
             0 \
-            -C "skip PMS generation for opaque RSA-PSK"\
-            -s "skip PMS generation for opaque RSA-PSK"\
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
             -S "SSL - The handshake negotiation failed" \
@@ -6982,8 +6906,6 @@ run_test    "PSK callback: raw rsa-psk on client, no static RSA-PSK on server, o
             0 \
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
-            -C "skip PMS generation for opaque RSA-PSK"\
-            -s "skip PMS generation for opaque RSA-PSK"\
             -S "SSL - The handshake negotiation failed" \
             -S "SSL - Unknown identity received" \
             -S "SSL - Verification of the message MAC failed"
@@ -6998,8 +6920,6 @@ run_test    "PSK callback: raw rsa-psk on client, no static RSA-PSK on server, o
             0 \
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
-            -C "skip PMS generation for opaque RSA-PSK"\
-            -s "skip PMS generation for opaque RSA-PSK"\
             -S "SSL - The handshake negotiation failed" \
             -S "SSL - Unknown identity received" \
             -S "SSL - Verification of the message MAC failed"
@@ -7011,8 +6931,6 @@ run_test    "PSK callback: raw ecdhe-psk on client, no static ECDHE-PSK on serve
             "$P_CLI extended_ms=0 debug_level=3 min_version=tls12 force_ciphersuite=TLS-ECDHE-PSK-WITH-AES-128-CBC-SHA \
             psk_identity=def psk=beef" \
             0 \
-            -C "skip PMS generation for opaque ECDHE-PSK"\
-            -s "skip PMS generation for opaque ECDHE-PSK"\
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
             -S "SSL - The handshake negotiation failed" \
@@ -7026,8 +6944,6 @@ run_test    "PSK callback: raw ecdhe-psk on client, no static ECDHE-PSK on serve
             "$P_CLI extended_ms=0 debug_level=3 min_version=tls12 force_ciphersuite=TLS-ECDHE-PSK-WITH-AES-256-CBC-SHA384 \
             psk_identity=def psk=beef" \
             0 \
-            -C "skip PMS generation for opaque ECDHE-PSK"\
-            -s "skip PMS generation for opaque ECDHE-PSK"\
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
             -S "SSL - The handshake negotiation failed" \
@@ -7044,8 +6960,6 @@ run_test    "PSK callback: raw ecdhe-psk on client, no static ECDHE-PSK on serve
             0 \
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
-            -C "skip PMS generation for opaque ECDHE-PSK"\
-            -s "skip PMS generation for opaque ECDHE-PSK"\
             -S "SSL - The handshake negotiation failed" \
             -S "SSL - Unknown identity received" \
             -S "SSL - Verification of the message MAC failed"
@@ -7060,8 +6974,6 @@ run_test    "PSK callback: raw ecdhe-psk on client, no static ECDHE-PSK on serve
             0 \
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
-            -C "skip PMS generation for opaque ECDHE-PSK"\
-            -s "skip PMS generation for opaque ECDHE-PSK"\
             -S "SSL - The handshake negotiation failed" \
             -S "SSL - Unknown identity received" \
             -S "SSL - Verification of the message MAC failed"
@@ -7073,8 +6985,6 @@ run_test    "PSK callback: raw dhe-psk on client, no static DHE-PSK on server, o
             "$P_CLI extended_ms=0 debug_level=3 min_version=tls12 force_ciphersuite=TLS-DHE-PSK-WITH-AES-128-CBC-SHA \
             psk_identity=def psk=beef" \
             0 \
-            -C "skip PMS generation for opaque DHE-PSK"\
-            -s "skip PMS generation for opaque DHE-PSK"\
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
             -S "SSL - The handshake negotiation failed" \
@@ -7088,8 +6998,6 @@ run_test    "PSK callback: raw dhe-psk on client, no static DHE-PSK on server, o
             "$P_CLI extended_ms=0 debug_level=3 min_version=tls12 force_ciphersuite=TLS-DHE-PSK-WITH-AES-256-CBC-SHA384 \
             psk_identity=def psk=beef" \
             0 \
-            -C "skip PMS generation for opaque DHE-PSK"\
-            -s "skip PMS generation for opaque DHE-PSK"\
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
             -S "SSL - The handshake negotiation failed" \
@@ -7106,8 +7014,6 @@ run_test    "PSK callback: raw dhe-psk on client, no static DHE-PSK on server, o
             0 \
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
-            -C "skip PMS generation for opaque DHE-PSK"\
-            -s "skip PMS generation for opaque DHE-PSK"\
             -S "SSL - The handshake negotiation failed" \
             -S "SSL - Unknown identity received" \
             -S "SSL - Verification of the message MAC failed"
@@ -7122,8 +7028,6 @@ run_test    "PSK callback: raw dhe-psk on client, no static DHE-PSK on server, o
             0 \
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
-            -C "skip PMS generation for opaque DHE-PSK"\
-            -s "skip PMS generation for opaque DHE-PSK"\
             -S "SSL - The handshake negotiation failed" \
             -S "SSL - Unknown identity received" \
             -S "SSL - Verification of the message MAC failed"
@@ -7135,8 +7039,6 @@ run_test    "PSK callback: raw psk on client, mismatching static raw PSK on serv
             "$P_CLI extended_ms=0 debug_level=3 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA \
             psk_identity=def psk=beef" \
             0 \
-            -C "skip PMS generation for opaque PSK"\
-            -s "skip PMS generation for opaque PSK"\
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
             -S "SSL - The handshake negotiation failed" \
@@ -7150,8 +7052,6 @@ run_test    "PSK callback: raw psk on client, mismatching static opaque PSK on s
             "$P_CLI extended_ms=0 debug_level=3 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA \
             psk_identity=def psk=beef" \
             0 \
-            -C "skip PMS generation for opaque PSK"\
-            -s "skip PMS generation for opaque PSK"\
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
             -S "SSL - The handshake negotiation failed" \
@@ -7165,7 +7065,6 @@ run_test    "PSK callback: raw psk on client, mismatching static opaque PSK on s
             "$P_CLI extended_ms=0 debug_level=3 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA \
             psk_identity=def psk=beef" \
             0 \
-            -C "skip PMS generation for opaque PSK"\
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
             -S "SSL - The handshake negotiation failed" \
@@ -7179,7 +7078,6 @@ run_test    "PSK callback: raw psk on client, id-matching but wrong raw PSK on s
             "$P_CLI extended_ms=0 debug_level=3 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA \
             psk_identity=def psk=beef" \
             0 \
-            -C "skip PMS generation for opaque PSK"\
             -C "session hash for extended master secret"\
             -S "session hash for extended master secret"\
             -S "SSL - The handshake negotiation failed" \
diff --git a/tests/suites/test_suite_ssl.function b/tests/suites/test_suite_ssl.function
index e42f8ba487..35f1638cb5 100644
--- a/tests/suites/test_suite_ssl.function
+++ b/tests/suites/test_suite_ssl.function
@@ -5310,6 +5310,7 @@ void test_multiple_psks()
 
     mbedtls_ssl_config conf;
 
+    USE_PSA_INIT( );
     mbedtls_ssl_config_init( &conf );
 
     TEST_ASSERT( mbedtls_ssl_conf_psk( &conf,
@@ -5323,6 +5324,8 @@ void test_multiple_psks()
 exit:
 
     mbedtls_ssl_config_free( &conf );
+
+    USE_PSA_DONE( );
 }
 /* END_CASE */