1 files changed, 78 insertions, 0 deletions
diff --git a/library/psa_crypto_client.c b/library/psa_crypto_client.c
new file mode 100644
index 000000000..ab7908634
--- /dev/null
+++ b/library/psa_crypto_client.c
@@ -0,0 +1,78 @@
+/*
+ *  PSA crypto client code
+ */
+/*
+ *  Copyright The Mbed TLS Contributors
+ *  SPDX-License-Identifier: Apache-2.0
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *  not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+#include "common.h"
+#include "psa/crypto.h"
+
+#if defined(MBEDTLS_PSA_CRYPTO_CLIENT)
+
+#include <string.h>
+#include "mbedtls/platform.h"
+
+void psa_reset_key_attributes( psa_key_attributes_t *attributes )
+{
+    mbedtls_free( attributes->domain_parameters );
+    memset( attributes, 0, sizeof( *attributes ) );
+}
+
+psa_status_t psa_set_key_domain_parameters( psa_key_attributes_t *attributes,
+                                            psa_key_type_t type,
+                                            const uint8_t *data,
+                                            size_t data_length )
+{
+    uint8_t *copy = NULL;
+
+    if( data_length != 0 )
+    {
+        copy = mbedtls_calloc( 1, data_length );
+        if( copy == NULL )
+            return( PSA_ERROR_INSUFFICIENT_MEMORY );
+        memcpy( copy, data, data_length );
+    }
+    /* After this point, this function is guaranteed to succeed, so it
+     * can start modifying `*attributes`. */
+
+    if( attributes->domain_parameters != NULL )
+    {
+        mbedtls_free( attributes->domain_parameters );
+        attributes->domain_parameters = NULL;
+        attributes->domain_parameters_size = 0;
+    }
+
+    attributes->domain_parameters = copy;
+    attributes->domain_parameters_size = data_length;
+    attributes->core.type = type;
+    return( PSA_SUCCESS );
+}
+
+psa_status_t psa_get_key_domain_parameters(
+    const psa_key_attributes_t *attributes,
+    uint8_t *data, size_t data_size, size_t *data_length )
+{
+    if( attributes->domain_parameters_size > data_size )
+        return( PSA_ERROR_BUFFER_TOO_SMALL );
+    *data_length = attributes->domain_parameters_size;
+    if( attributes->domain_parameters_size != 0 )
+        memcpy( data, attributes->domain_parameters,
+                attributes->domain_parameters_size );
+    return( PSA_SUCCESS );
+}
+
+#endif /* MBEDTLS_PSA_CRYPTO_CLIENT */