diff --git a/tests/suites/test_suite_x509write.data b/tests/suites/test_suite_x509write.data
index fd8b9ae..1c2c6a1 100644
--- a/tests/suites/test_suite_x509write.data
+++ b/tests/suites/test_suite_x509write.data
@@ -94,6 +94,25 @@
 depends_on:MBEDTLS_SHA1_C:MBEDTLS_RSA_C:MBEDTLS_PKCS1_V15:MBEDTLS_DES_C:MBEDTLS_CIPHER_MODE_CBC:MBEDTLS_MD5_C
 x509_crt_check:"data_files/server1.key":"":"C=NL,O=PolarSSL,CN=PolarSSL Server 1":"data_files/test-ca.key":"PolarSSLTest":"C=NL,O=PolarSSL,CN=PolarSSL Test CA":"1":"20190210144406":"20290210144406":MBEDTLS_MD_SHA1:0:0:0:0:0:-1:"data_files/server1.ca_noauthid.crt":1:1
 
+Certificate write check Server1 SHA1, Opaque
+depends_on:MBEDTLS_SHA1_C:MBEDTLS_RSA_C:MBEDTLS_PKCS1_V15:MBEDTLS_DES_C:MBEDTLS_CIPHER_MODE_CBC:MBEDTLS_MD5_C:MBEDTLS_USE_PSA_CRYPTO
+x509_crt_check:"data_files/server1.key":"":"C=NL,O=PolarSSL,CN=PolarSSL Server 1":"data_files/test-ca.key":"PolarSSLTest":"C=NL,O=PolarSSL,CN=PolarSSL Test CA":"1":"20190210144406":"20290210144406":MBEDTLS_MD_SHA1:0:0:0:0:1:-1:"data_files/server1.crt":2:0
+
+Certificate write check Server1 SHA1, Opaque, key_usage
+depends_on:MBEDTLS_SHA1_C:MBEDTLS_RSA_C:MBEDTLS_PKCS1_V15:MBEDTLS_DES_C:MBEDTLS_CIPHER_MODE_CBC:MBEDTLS_MD5_C:MBEDTLS_USE_PSA_CRYPTO
+x509_crt_check:"data_files/server1.key":"":"C=NL,O=PolarSSL,CN=PolarSSL Server 1":"data_files/test-ca.key":"PolarSSLTest":"C=NL,O=PolarSSL,CN=PolarSSL Test CA":"1":"20190210144406":"20290210144406":MBEDTLS_MD_SHA1:MBEDTLS_X509_KU_DIGITAL_SIGNATURE | MBEDTLS_X509_KU_NON_REPUDIATION | MBEDTLS_X509_KU_KEY_ENCIPHERMENT:1:0:0:1:-1:"data_files/server1.key_usage.crt":2:0
+
+Certificate write check Server1 SHA1, Opaque, ns_cert_type
+depends_on:MBEDTLS_SHA1_C:MBEDTLS_RSA_C:MBEDTLS_PKCS1_V15:MBEDTLS_DES_C:MBEDTLS_CIPHER_MODE_CBC:MBEDTLS_MD5_C:MBEDTLS_USE_PSA_CRYPTO
+x509_crt_check:"data_files/server1.key":"":"C=NL,O=PolarSSL,CN=PolarSSL Server 1":"data_files/test-ca.key":"PolarSSLTest":"C=NL,O=PolarSSL,CN=PolarSSL Test CA":"1":"20190210144406":"20290210144406":MBEDTLS_MD_SHA1:0:0:MBEDTLS_X509_NS_CERT_TYPE_SSL_SERVER:1:1:-1:"data_files/server1.cert_type.crt":2:0
+
+Certificate write check Server1 SHA1, Opaque, version 1
+depends_on:MBEDTLS_SHA1_C:MBEDTLS_RSA_C:MBEDTLS_PKCS1_V15:MBEDTLS_DES_C:MBEDTLS_CIPHER_MODE_CBC:MBEDTLS_MD5_C:MBEDTLS_USE_PSA_CRYPTO
+x509_crt_check:"data_files/server1.key":"":"C=NL,O=PolarSSL,CN=PolarSSL Server 1":"data_files/test-ca.key":"PolarSSLTest":"C=NL,O=PolarSSL,CN=PolarSSL Test CA":"1":"20190210144406":"20290210144406":MBEDTLS_MD_SHA1:0:0:0:0:1:MBEDTLS_X509_CRT_VERSION_1:"data_files/server1.v1.crt":2:0
+
+Certificate write check Server1 SHA1, Opaque, CA
+depends_on:MBEDTLS_SHA1_C:MBEDTLS_RSA_C:MBEDTLS_PKCS1_V15:MBEDTLS_DES_C:MBEDTLS_CIPHER_MODE_CBC:MBEDTLS_MD5_C:MBEDTLS_USE_PSA_CRYPTO
+x509_crt_check:"data_files/server1.key":"":"C=NL,O=PolarSSL,CN=PolarSSL Server 1":"data_files/test-ca.key":"PolarSSLTest":"C=NL,O=PolarSSL,CN=PolarSSL Test CA":"1":"20190210144406":"20290210144406":MBEDTLS_MD_SHA1:0:0:0:0:1:-1:"data_files/server1.ca.crt":2:1
 
 X509 String to Names #1
 mbedtls_x509_string_to_names:"C=NL,O=Offspark\, Inc., OU=PolarSSL":"C=NL, O=Offspark, Inc., OU=PolarSSL":0
diff --git a/tests/suites/test_suite_x509write.function b/tests/suites/test_suite_x509write.function
index 947fcc4..ef566d0 100644
--- a/tests/suites/test_suite_x509write.function
+++ b/tests/suites/test_suite_x509write.function
@@ -223,7 +223,7 @@
                      char *serial_str, char *not_before, char *not_after,
                      int md_type, int key_usage, int set_key_usage,
                      int cert_type, int set_cert_type, int auth_ident,
-                     int ver, char *cert_check_file, int rsa_alt, int is_ca )
+                     int ver, char *cert_check_file, int pk_wrap, int is_ca )
 {
     mbedtls_pk_context subject_key, issuer_key, issuer_key_alt;
     mbedtls_pk_context *key = &issuer_key;
@@ -237,6 +237,9 @@
     int der_len = -1;
     FILE *f;
     mbedtls_test_rnd_pseudo_info rnd_info;
+#if defined(MBEDTLS_USE_PSA_CRYPTO)
+    mbedtls_svc_key_id_t key_id = MBEDTLS_SVC_KEY_ID_INIT;
+#endif
 
     memset( &rnd_info, 0x2a, sizeof( mbedtls_test_rnd_pseudo_info ) );
     mbedtls_mpi_init( &serial );
@@ -257,7 +260,7 @@
 
 #if defined(MBEDTLS_RSA_C)
     /* For RSA PK contexts, create a copy as an alternative RSA context. */
-    if( rsa_alt == 1 && mbedtls_pk_get_type( &issuer_key ) == MBEDTLS_PK_RSA )
+    if( pk_wrap == 1 && mbedtls_pk_get_type( &issuer_key ) == MBEDTLS_PK_RSA )
     {
         TEST_ASSERT( mbedtls_pk_setup_rsa_alt( &issuer_key_alt,
                                             mbedtls_pk_rsa( issuer_key ),
@@ -267,10 +270,24 @@
 
         key = &issuer_key_alt;
     }
-#else
-    (void) rsa_alt;
 #endif
 
+#if defined(MBEDTLS_USE_PSA_CRYPTO)
+    /* For Opaque PK contexts, wrap key as an Opaque RSA context. */
+    if( pk_wrap == 2 )
+    {
+        psa_algorithm_t md_alg_psa =
+            mbedtls_psa_translate_md( (mbedtls_md_type_t) md_type );
+
+        TEST_ASSERT( md_alg_psa != MBEDTLS_MD_NONE );
+        TEST_ASSERT( mbedtls_pk_wrap_as_opaque( &issuer_key, &key_id,
+                                                md_alg_psa ) == 0 );
+    }
+#endif /* MBEDTLS_USE_PSA_CRYPTO */
+
+    if( pk_wrap == 2 )
+        TEST_ASSERT( mbedtls_pk_get_type( &issuer_key ) == MBEDTLS_PK_OPAQUE );
+
     TEST_ASSERT( mbedtls_test_read_mpi( &serial, 10, serial_str ) == 0 );
 
     if( ver != -1 )
@@ -339,6 +356,9 @@
     mbedtls_pk_free( &subject_key );
     mbedtls_pk_free( &issuer_key );
     mbedtls_mpi_free( &serial );
+#if defined(MBEDTLS_USE_PSA_CRYPTO)
+    psa_destroy_key( key_id );
+#endif
     USE_PSA_DONE( );
 }
 /* END_CASE */