Implement one-shot cipher
Implement one-shot cipher APIs, psa_cipher_encrypt and psa_cipher_decrypt, introduced in PSA Crypto API 1.0.
Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
diff --git a/library/psa_crypto.c b/library/psa_crypto.c
index 016c24a..b02e4b8 100644
--- a/library/psa_crypto.c
+++ b/library/psa_crypto.c
@@ -3481,6 +3481,107 @@
return( PSA_SUCCESS );
}
+psa_status_t psa_cipher_encrypt( mbedtls_svc_key_id_t key,
+ psa_algorithm_t alg,
+ const uint8_t *input,
+ size_t input_length,
+ uint8_t *output,
+ size_t output_size,
+ size_t *output_length )
+{
+ psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
+ psa_cipher_operation_t operation = PSA_CIPHER_OPERATION_INIT;
+ size_t iv_length = 0;;
+ size_t olength;
+
+ status = psa_cipher_encrypt_setup( &operation, key, alg );
+ if( status != PSA_SUCCESS )
+ goto exit;
+
+ *output_length = 0;
+ if( operation.iv_required )
+ {
+ status = psa_cipher_generate_iv( &operation, output,
+ operation.default_iv_length,
+ &iv_length );
+ *output_length += iv_length;
+ if( status != PSA_SUCCESS )
+ goto exit;
+ }
+
+ olength = 0;
+ status = psa_cipher_update( &operation, input, input_length,
+ output + iv_length, output_size - iv_length,
+ &olength );
+ *output_length += olength;
+ if( status != PSA_SUCCESS )
+ goto exit;
+
+ olength = 0;
+ status = psa_cipher_finish( &operation, output + *output_length,
+ output_size - *output_length, &olength );
+ *output_length += olength;
+ if( status != PSA_SUCCESS )
+ goto exit;
+
+exit:
+ if ( status == PSA_SUCCESS )
+ status = psa_cipher_abort( &operation );
+ else
+ psa_cipher_abort( &operation );
+
+ return ( status );
+}
+
+psa_status_t psa_cipher_decrypt( mbedtls_svc_key_id_t key,
+ psa_algorithm_t alg,
+ const uint8_t *input,
+ size_t input_length,
+ uint8_t *output,
+ size_t output_size,
+ size_t *output_length )
+{
+ psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
+ psa_cipher_operation_t operation = PSA_CIPHER_OPERATION_INIT;
+ size_t olength;
+
+ status = psa_cipher_decrypt_setup( &operation, key, alg );
+ if( status != PSA_SUCCESS )
+ goto exit;
+
+ if( operation.iv_required )
+ {
+ status = psa_cipher_set_iv( &operation, input,
+ operation.default_iv_length );
+ if( status != PSA_SUCCESS )
+ goto exit;
+ }
+
+ olength = 0;
+ status = psa_cipher_update( &operation, input + operation.default_iv_length,
+ input_length - operation.default_iv_length,
+ output, output_size, &olength );
+ *output_length = olength;
+ if( status != PSA_SUCCESS )
+ goto exit;
+
+ olength = 0;
+ status = psa_cipher_finish( &operation, output + *output_length,
+ output_size - *output_length, &olength );
+ *output_length += olength;
+ if( status != PSA_SUCCESS )
+ goto exit;
+
+exit:
+ if ( status == PSA_SUCCESS )
+ status = psa_cipher_abort( &operation );
+ else
+ psa_cipher_abort( &operation );
+
+ return ( status );
+}
+
+
/****************************************************************/
/* AEAD */
/****************************************************************/