diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index 988fafb..5932bc8 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -7476,12 +7476,40 @@
                                           size_t dst_len,
                                           size_t *olen )
 {
-    ((void) ssl);
-    ((void) md);
-    ((void) dst);
-    ((void) dst_len);
+    psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
+    psa_hash_operation_t *hash_operation_to_clone;
+    psa_hash_operation_t hash_operation = psa_hash_operation_init();
+
     *olen = 0;
-    return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE);
+
+    switch( md )
+    {
+#if defined(MBEDTLS_SHA384_C)
+    case MBEDTLS_MD_SHA384:
+        hash_operation_to_clone = &ssl->handshake->fin_sha384_psa;
+        break;
+#endif
+
+#if defined(MBEDTLS_SHA256_C)
+    case MBEDTLS_MD_SHA256:
+        hash_operation_to_clone = &ssl->handshake->fin_sha256_psa;
+        break;
+#endif
+
+    default:
+        goto exit;
+    }
+
+    status = psa_hash_clone( hash_operation_to_clone, &hash_operation );
+    if( status != PSA_SUCCESS )
+        goto exit;
+
+    status = psa_hash_finish( &hash_operation, dst, dst_len, olen );
+    if( status != PSA_SUCCESS )
+        goto exit;
+
+exit:
+    return( ( status == PSA_SUCCESS ) ? 0 : MBEDTLS_ERR_ERROR_GENERIC_ERROR );
 }
 #else /* MBEDTLS_USE_PSA_CRYPTO */