diff --git a/include/mbedtls/check_config.h b/include/mbedtls/check_config.h
index ce97f6a..908ba93 100644
--- a/include/mbedtls/check_config.h
+++ b/include/mbedtls/check_config.h
@@ -561,11 +561,6 @@
 #error "MBEDTLS_PSA_ITS_FILE_C defined, but not all prerequisites"
 #endif
 
-#if defined(MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER) && \
-    defined(MBEDTLS_USE_PSA_CRYPTO)
-#error "MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER defined, but it cannot coexist with MBEDTLS_USE_PSA_CRYPTO."
-#endif
-
 #if defined(MBEDTLS_RSA_C) && ( !defined(MBEDTLS_BIGNUM_C) ||         \
     !defined(MBEDTLS_OID_C) )
 #error "MBEDTLS_RSA_C defined, but not all prerequisites"
diff --git a/include/mbedtls/pk.h b/include/mbedtls/pk.h
index 5f9f29f..9ad7a1d 100644
--- a/include/mbedtls/pk.h
+++ b/include/mbedtls/pk.h
@@ -351,7 +351,7 @@
  * \return          #MBEDTLS_ERR_PK_ALLOC_FAILED on allocation failure.
  */
 int mbedtls_pk_setup_opaque( mbedtls_pk_context *ctx,
-                             const psa_key_id_t key );
+                             const mbedtls_svc_key_id_t key );
 #endif /* MBEDTLS_USE_PSA_CRYPTO */
 
 #if defined(MBEDTLS_PK_RSA_ALT_SUPPORT)
@@ -898,7 +898,7 @@
  * \return          An Mbed TLS error code otherwise.
  */
 int mbedtls_pk_wrap_as_opaque( mbedtls_pk_context *pk,
-                               psa_key_id_t *key,
+                               mbedtls_svc_key_id_t *key,
                                psa_algorithm_t hash_alg );
 #endif /* MBEDTLS_USE_PSA_CRYPTO */
 
diff --git a/include/mbedtls/ssl.h b/include/mbedtls/ssl.h
index 072ebbe..77a7aaa 100644
--- a/include/mbedtls/ssl.h
+++ b/include/mbedtls/ssl.h
@@ -1380,7 +1380,7 @@
 #if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
 
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
-    psa_key_id_t MBEDTLS_PRIVATE(psk_opaque); /*!< PSA key slot holding opaque PSK. This field
+    mbedtls_svc_key_id_t MBEDTLS_PRIVATE(psk_opaque); /*!< PSA key slot holding opaque PSK. This field
                               *   should only be set via
                               *   mbedtls_ssl_conf_psk_opaque().
                               *   If either no PSK or a raw PSK have been
@@ -3042,7 +3042,7 @@
  * \return         Another negative error code on other kinds of failure.
  */
 int mbedtls_ssl_conf_psk_opaque( mbedtls_ssl_config *conf,
-                                 psa_key_id_t psk,
+                                 mbedtls_svc_key_id_t psk,
                                  const unsigned char *psk_identity,
                                  size_t psk_identity_len );
 #endif /* MBEDTLS_USE_PSA_CRYPTO */
@@ -3088,7 +3088,7 @@
  * \return         An \c MBEDTLS_ERR_SSL_XXX error code on failure.
  */
 int mbedtls_ssl_set_hs_psk_opaque( mbedtls_ssl_context *ssl,
-                                   psa_key_id_t psk );
+                                   mbedtls_svc_key_id_t psk );
 #endif /* MBEDTLS_USE_PSA_CRYPTO */
 
 /**
diff --git a/library/cipher_wrap.h b/library/cipher_wrap.h
index 90563d8..e27d6af 100644
--- a/library/cipher_wrap.h
+++ b/library/cipher_wrap.h
@@ -130,7 +130,7 @@
 typedef struct
 {
     psa_algorithm_t alg;
-    psa_key_id_t slot;
+    mbedtls_svc_key_id_t slot;
     mbedtls_cipher_psa_key_ownership slot_state;
 } mbedtls_cipher_context_psa;
 #endif /* MBEDTLS_USE_PSA_CRYPTO */
diff --git a/library/pk.c b/library/pk.c
index ea4869c..e364520 100644
--- a/library/pk.c
+++ b/library/pk.c
@@ -151,11 +151,11 @@
  * Initialise a PSA-wrapping context
  */
 int mbedtls_pk_setup_opaque( mbedtls_pk_context *ctx,
-                             const psa_key_id_t key )
+                             const mbedtls_svc_key_id_t key )
 {
     const mbedtls_pk_info_t * const info = &mbedtls_pk_opaque_info;
     psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;
-    psa_key_id_t *pk_ctx;
+    mbedtls_svc_key_id_t *pk_ctx;
     psa_key_type_t type;
 
     if( ctx == NULL || ctx->pk_info != NULL )
@@ -175,7 +175,7 @@
 
     ctx->pk_info = info;
 
-    pk_ctx = (psa_key_id_t *) ctx->pk_ctx;
+    pk_ctx = (mbedtls_svc_key_id_t *) ctx->pk_ctx;
     *pk_ctx = key;
 
     return( 0 );
@@ -598,7 +598,7 @@
  * Currently only works for EC private keys.
  */
 int mbedtls_pk_wrap_as_opaque( mbedtls_pk_context *pk,
-                               psa_key_id_t *key,
+                               mbedtls_svc_key_id_t *key,
                                psa_algorithm_t hash_alg )
 {
 #if !defined(MBEDTLS_ECP_C)
diff --git a/library/pk_wrap.c b/library/pk_wrap.c
index 80c0aad..0bb87a4 100644
--- a/library/pk_wrap.c
+++ b/library/pk_wrap.c
@@ -560,7 +560,7 @@
     mbedtls_ecdsa_context *ctx = ctx_arg;
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;
-    psa_key_id_t key_id = 0;
+    mbedtls_svc_key_id_t key_id = MBEDTLS_SVC_KEY_ID_INIT;
     psa_status_t status;
     mbedtls_pk_context key;
     int key_len;
@@ -894,7 +894,7 @@
 
 static void *pk_opaque_alloc_wrap( void )
 {
-    void *ctx = mbedtls_calloc( 1, sizeof( psa_key_id_t ) );
+    void *ctx = mbedtls_calloc( 1, sizeof( mbedtls_svc_key_id_t ) );
 
     /* no _init() function to call, an calloc() already zeroized */
 
@@ -903,13 +903,13 @@
 
 static void pk_opaque_free_wrap( void *ctx )
 {
-    mbedtls_platform_zeroize( ctx, sizeof( psa_key_id_t ) );
+    mbedtls_platform_zeroize( ctx, sizeof( mbedtls_svc_key_id_t ) );
     mbedtls_free( ctx );
 }
 
 static size_t pk_opaque_get_bitlen( const void *ctx )
 {
-    const psa_key_id_t *key = (const psa_key_id_t *) ctx;
+    const mbedtls_svc_key_id_t *key = (const mbedtls_svc_key_id_t *) ctx;
     size_t bits;
     psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;
 
@@ -1033,7 +1033,7 @@
     ((void) p_rng);
     return( MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE );
 #else /* !MBEDTLS_ECDSA_C */
-    const psa_key_id_t *key = (const psa_key_id_t *) ctx;
+    const mbedtls_svc_key_id_t *key = (const mbedtls_svc_key_id_t *) ctx;
     psa_algorithm_t alg = PSA_ALG_ECDSA( mbedtls_psa_translate_md( md_alg ) );
     psa_status_t status;
 
diff --git a/library/pkwrite.c b/library/pkwrite.c
index 71cc0f0..b923c38 100644
--- a/library/pkwrite.c
+++ b/library/pkwrite.c
@@ -198,7 +198,7 @@
     if( mbedtls_pk_get_type( key ) == MBEDTLS_PK_OPAQUE )
     {
         size_t buffer_size;
-        psa_key_id_t* key_id = (psa_key_id_t*) key->pk_ctx;
+        mbedtls_svc_key_id_t* key_id = (mbedtls_svc_key_id_t*) key->pk_ctx;
 
         if ( *p < start )
             return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
@@ -265,11 +265,11 @@
     {
         psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;
         psa_key_type_t key_type;
-        psa_key_id_t key_id;
+        mbedtls_svc_key_id_t key_id;
         psa_ecc_family_t curve;
         size_t bits;
 
-        key_id = *((psa_key_id_t*) key->pk_ctx );
+        key_id = *((mbedtls_svc_key_id_t*) key->pk_ctx );
         if( PSA_SUCCESS != psa_get_key_attributes( key_id, &attributes ) )
             return( MBEDTLS_ERR_PLATFORM_HW_ACCEL_FAILED );
         key_type = psa_get_key_type( &attributes );
diff --git a/library/ssl_misc.h b/library/ssl_misc.h
index 515f684..4f84a2b 100644
--- a/library/ssl_misc.h
+++ b/library/ssl_misc.h
@@ -609,7 +609,7 @@
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
     psa_key_type_t ecdh_psa_type;
     uint16_t ecdh_bits;
-    psa_key_id_t ecdh_psa_privkey;
+    mbedtls_svc_key_id_t ecdh_psa_privkey;
     unsigned char ecdh_psa_peerkey[MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH];
     size_t ecdh_psa_peerkey_len;
 #endif /* MBEDTLS_USE_PSA_CRYPTO */
@@ -630,7 +630,7 @@
 
 #if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
-    psa_key_id_t psk_opaque;            /*!< Opaque PSK from the callback   */
+    mbedtls_svc_key_id_t psk_opaque;            /*!< Opaque PSK from the callback   */
 #endif /* MBEDTLS_USE_PSA_CRYPTO */
     unsigned char *psk;                 /*!<  PSK from the callback         */
     size_t psk_len;                     /*!<  Length of PSK from callback   */
@@ -1247,7 +1247,7 @@
  * 2. static PSK configured by \c mbedtls_ssl_conf_psk_opaque()
  * Return an opaque PSK
  */
-static inline psa_key_id_t mbedtls_ssl_get_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 ) )
diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index d8739bd..1d569e7 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -333,7 +333,7 @@
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
 
 static psa_status_t setup_psa_key_derivation( psa_key_derivation_operation_t* derivation,
-                                              psa_key_id_t key,
+                                              mbedtls_svc_key_id_t key,
                                               psa_algorithm_t alg,
                                               const unsigned char* seed, size_t seed_length,
                                               const unsigned char* label, size_t label_length,
@@ -393,7 +393,7 @@
 {
     psa_status_t status;
     psa_algorithm_t alg;
-    psa_key_id_t master_key = MBEDTLS_SVC_KEY_ID_INIT;
+    mbedtls_svc_key_id_t master_key = MBEDTLS_SVC_KEY_ID_INIT;
     psa_key_derivation_operation_t derivation =
         PSA_KEY_DERIVATION_OPERATION_INIT;
 
@@ -1223,7 +1223,7 @@
         /* Perform PSK-to-MS expansion in a single step. */
         psa_status_t status;
         psa_algorithm_t alg;
-        psa_key_id_t psk;
+        mbedtls_svc_key_id_t psk;
         psa_key_derivation_operation_t derivation =
             PSA_KEY_DERIVATION_OPERATION_INIT;
         mbedtls_md_type_t hash_alg = handshake->ciphersuite_info->mac;
@@ -3890,7 +3890,7 @@
 
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
 int mbedtls_ssl_conf_psk_opaque( mbedtls_ssl_config *conf,
-                                 psa_key_id_t psk,
+                                 mbedtls_svc_key_id_t psk,
                                  const unsigned char *psk_identity,
                                  size_t psk_identity_len )
 {
@@ -3915,7 +3915,7 @@
 }
 
 int mbedtls_ssl_set_hs_psk_opaque( mbedtls_ssl_context *ssl,
-                                   psa_key_id_t psk )
+                                   mbedtls_svc_key_id_t psk )
 {
     if( ( mbedtls_svc_key_id_is_null( psk ) ) ||
         ( ssl->handshake == NULL ) )
diff --git a/programs/ssl/ssl_client2.c b/programs/ssl/ssl_client2.c
index 57f7d8f..7ecc61d 100644
--- a/programs/ssl/ssl_client2.c
+++ b/programs/ssl/ssl_client2.c
@@ -692,7 +692,7 @@
     const char *pers = "ssl_client2";
 
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
-    psa_key_id_t slot = 0;
+    mbedtls_svc_key_id_t slot = MBEDTLS_SVC_KEY_ID_INIT;
     psa_algorithm_t alg = 0;
     psa_key_attributes_t key_attributes;
     psa_status_t status;
@@ -716,7 +716,7 @@
     mbedtls_x509_crt clicert;
     mbedtls_pk_context pkey;
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
-    psa_key_id_t key_slot = 0; /* invalid key slot */
+    mbedtls_svc_key_id_t key_slot = MBEDTLS_SVC_KEY_ID_INIT; /* invalid key slot */
 #endif
 #endif  /* MBEDTLS_X509_CRT_PARSE_C */
     char *p, *q;
@@ -3061,7 +3061,8 @@
             ( opt.query_config_mode == DFL_QUERY_CONFIG_MODE ) )
         {
             mbedtls_printf( "Failed to destroy key slot %u - error was %d",
-                            (unsigned) slot, (int) status );
+                            (unsigned) MBEDTLS_SVC_KEY_ID_GET_KEY_ID( slot ),
+                            (int) status );
             if( ret == 0 )
                 ret = MBEDTLS_ERR_SSL_HW_ACCEL_FAILED;
         }
diff --git a/programs/ssl/ssl_server2.c b/programs/ssl/ssl_server2.c
index 7cbdaf6..1112a00 100644
--- a/programs/ssl/ssl_server2.c
+++ b/programs/ssl/ssl_server2.c
@@ -849,7 +849,7 @@
     size_t key_len;
     unsigned char key[MBEDTLS_PSK_MAX_LEN];
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
-    psa_key_id_t slot;
+    mbedtls_svc_key_id_t slot;
 #endif /* MBEDTLS_USE_PSA_CRYPTO */
     psk_entry *next;
 };
@@ -865,9 +865,9 @@
     {
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
         psa_status_t status;
-        psa_key_id_t const slot = head->slot;
+        mbedtls_svc_key_id_t const slot = head->slot;
 
-        if( slot != 0 )
+        if( MBEDTLS_SVC_KEY_ID_GET_KEY_ID( slot ) != 0 )
         {
             status = psa_destroy_key( slot );
             if( status != PSA_SUCCESS )
@@ -940,7 +940,7 @@
             memcmp( name, cur->name, name_len ) == 0 )
         {
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
-            if( cur->slot != 0 )
+            if( MBEDTLS_SVC_KEY_ID_GET_KEY_ID( cur->slot ) != 0 )
                 return( mbedtls_ssl_set_hs_psk_opaque( ssl, cur->slot ) );
             else
 #endif
@@ -1208,7 +1208,7 @@
 #endif /* MBEDTLS_SSL_ASYNC_PRIVATE */
 
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
-static psa_status_t psa_setup_psk_key_slot( psa_key_id_t *slot,
+static psa_status_t psa_setup_psk_key_slot( mbedtls_svc_key_id_t *slot,
                                             psa_algorithm_t alg,
                                             unsigned char *psk,
                                             size_t psk_len )
@@ -1291,7 +1291,7 @@
 #if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
     psa_algorithm_t alg = 0;
-    psa_key_id_t psk_slot = 0;
+    mbedtls_svc_key_id_t psk_slot = MBEDTLS_SVC_KEY_ID_INIT;
 #endif /* MBEDTLS_USE_PSA_CRYPTO */
     unsigned char psk[MBEDTLS_PSK_MAX_LEN];
     size_t psk_len = 0;
@@ -1323,8 +1323,8 @@
     mbedtls_x509_crt srvcert2;
     mbedtls_pk_context pkey2;
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
-    psa_key_id_t key_slot = 0; /* invalid key slot */
-    psa_key_id_t key_slot2 = 0; /* invalid key slot */
+    mbedtls_svc_key_id_t key_slot = MBEDTLS_SVC_KEY_ID_INIT; /* invalid key slot */
+    mbedtls_svc_key_id_t key_slot2 = MBEDTLS_SVC_KEY_ID_INIT; /* invalid key slot */
 #endif
     int key_cert_init = 0, key_cert_init2 = 0;
 #if defined(MBEDTLS_SSL_ASYNC_PRIVATE)
@@ -4018,7 +4018,8 @@
             ( opt.query_config_mode == DFL_QUERY_CONFIG_MODE ) )
         {
             mbedtls_printf( "Failed to destroy key slot %u - error was %d",
-                            (unsigned) psk_slot, (int) status );
+                            (unsigned) MBEDTLS_SVC_KEY_ID_GET_KEY_ID( psk_slot ),
+                            (int) status );
         }
     }
 #endif /* MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED &&
diff --git a/programs/ssl/ssl_test_lib.h b/programs/ssl/ssl_test_lib.h
index 6b9e7b8..cf0b49e 100644
--- a/programs/ssl/ssl_test_lib.h
+++ b/programs/ssl/ssl_test_lib.h
@@ -52,14 +52,12 @@
 #endif
 
 #if !defined(MBEDTLS_NET_C) ||                              \
-    !defined(MBEDTLS_SSL_TLS_C) ||                          \
-    defined(MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER)
-#define MBEDTLS_SSL_TEST_IMPOSSIBLE                             \
-    "MBEDTLS_NET_C and/or "                                     \
-    "MBEDTLS_SSL_TLS_C not defined, "                           \
-    "and/or MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER defined.\n"
+    !defined(MBEDTLS_SSL_TLS_C)
+#define MBEDTLS_SSL_TEST_IMPOSSIBLE                         \
+    "MBEDTLS_NET_C and/or "                                 \
+    "MBEDTLS_SSL_TLS_C not defined."
 #elif !defined(HAVE_RNG)
-#define MBEDTLS_SSL_TEST_IMPOSSIBLE             \
+#define MBEDTLS_SSL_TEST_IMPOSSIBLE                         \
     "No random generator is available.\n"
 #else
 #undef MBEDTLS_SSL_TEST_IMPOSSIBLE
diff --git a/tests/scripts/all.sh b/tests/scripts/all.sh
index 6e17a91..1e0ff7a 100755
--- a/tests/scripts/all.sh
+++ b/tests/scripts/all.sh
@@ -940,9 +940,8 @@
 }
 
 component_test_psa_crypto_key_id_encodes_owner () {
-    msg "build: full config - USE_PSA_CRYPTO + PSA_CRYPTO_KEY_ID_ENCODES_OWNER, cmake, gcc, ASan"
+    msg "build: full config + PSA_CRYPTO_KEY_ID_ENCODES_OWNER, cmake, gcc, ASan"
     scripts/config.py full
-    scripts/config.py unset MBEDTLS_USE_PSA_CRYPTO
     scripts/config.py set MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER
     CC=gcc cmake -D CMAKE_BUILD_TYPE:String=Asan .
     make
@@ -960,9 +959,8 @@
 }
 
 component_build_psa_crypto_spm () {
-    msg "build: full config - USE_PSA_CRYPTO + PSA_CRYPTO_KEY_ID_ENCODES_OWNER + PSA_CRYPTO_SPM, make, gcc"
+    msg "build: full config + PSA_CRYPTO_KEY_ID_ENCODES_OWNER + PSA_CRYPTO_SPM, make, gcc"
     scripts/config.py full
-    scripts/config.py unset MBEDTLS_USE_PSA_CRYPTO
     scripts/config.py unset MBEDTLS_PSA_CRYPTO_BUILTIN_KEYS
     scripts/config.py set MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER
     scripts/config.py set MBEDTLS_PSA_CRYPTO_SPM
diff --git a/tests/suites/test_suite_ssl.function b/tests/suites/test_suite_ssl.function
index ce934b0..7a0b1f7 100644
--- a/tests/suites/test_suite_ssl.function
+++ b/tests/suites/test_suite_ssl.function
@@ -4815,13 +4815,15 @@
     unsigned char psk0_raw[10] = { 0 };
     unsigned char psk0_raw_identity[] = { 'f', 'o', 'o' };
 
-    psa_key_id_t psk0_opaque = (psa_key_id_t) 1;
+    mbedtls_svc_key_id_t psk0_opaque = mbedtls_svc_key_id_make( 0x1, (psa_key_id_t) 1 );
+
     unsigned char psk0_opaque_identity[] = { 'f', 'o', 'o' };
 
     unsigned char psk1_raw[10] = { 0 };
     unsigned char psk1_raw_identity[] = { 'b', 'a', 'r' };
 
-    psa_key_id_t psk1_opaque = (psa_key_id_t) 2;
+    mbedtls_svc_key_id_t psk1_opaque = mbedtls_svc_key_id_make( 0x1, (psa_key_id_t) 2 );
+
     unsigned char psk1_opaque_identity[] = { 'b', 'a', 'r' };
 
     mbedtls_ssl_config conf;