add compute application transform
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
diff --git a/library/ssl_tls13_keys.c b/library/ssl_tls13_keys.c
index 0b7d279..62e70ff 100644
--- a/library/ssl_tls13_keys.c
+++ b/library/ssl_tls13_keys.c
@@ -1571,4 +1571,58 @@
return( 0 );
}
+int mbedtls_ssl_tls13_compute_application_transform( mbedtls_ssl_context *ssl )
+{
+ int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
+ mbedtls_ssl_key_set traffic_keys;
+ mbedtls_ssl_transform *transform_application = NULL;
+
+ ret = mbedtls_ssl_tls13_key_schedule_stage_application( ssl );
+ if( ret != 0 )
+ {
+ MBEDTLS_SSL_DEBUG_RET( 1,
+ "mbedtls_ssl_tls13_key_schedule_stage_application", ret );
+ goto cleanup;
+ }
+
+ ret = mbedtls_ssl_tls13_generate_application_keys( ssl, &traffic_keys );
+ if( ret != 0 )
+ {
+ MBEDTLS_SSL_DEBUG_RET( 1,
+ "mbedtls_ssl_tls13_generate_application_keys", ret );
+ goto cleanup;
+ }
+
+ transform_application =
+ mbedtls_calloc( 1, sizeof( mbedtls_ssl_transform ) );
+ if( transform_application == NULL )
+ {
+ ret = MBEDTLS_ERR_SSL_ALLOC_FAILED;
+ goto cleanup;
+ }
+
+ ret = mbedtls_ssl_tls13_populate_transform(
+ transform_application,
+ ssl->conf->endpoint,
+ ssl->session_negotiate->ciphersuite,
+ &traffic_keys,
+ ssl );
+ if( ret != 0 )
+ {
+ MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_tls13_populate_transform", ret );
+ goto cleanup;
+ }
+
+ ssl->transform_application = transform_application;
+
+cleanup:
+
+ mbedtls_platform_zeroize( &traffic_keys, sizeof( traffic_keys ) );
+ if( ret != 0 )
+ {
+ mbedtls_free( transform_application );
+ }
+ return( ret );
+}
+
#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */