Introduce mbedtls_pk_restart_ctx and use it
The fact that you needed to pass a pointer to mbedtls_ecdsa_restart_ctx (or
that you needed to know the key type of the PK context) was a breach of
abstraction.
Change the API (and callers) now, and the implementation will be changed in
the next commit.
diff --git a/library/pk.c b/library/pk.c
index e439c7a..27ca5f3 100644
--- a/library/pk.c
+++ b/library/pk.c
@@ -73,6 +73,27 @@
mbedtls_zeroize( ctx, sizeof( mbedtls_pk_context ) );
}
+#if defined(MBEDTLS_ECP_RESTARTABLE)
+/*
+ * Initialize a restart context
+ */
+void mbedtls_pk_restart_init( mbedtls_pk_restart_ctx *ctx )
+{
+ mbedtls_ecdsa_restart_init( &ctx->ecdsa );
+}
+
+/*
+ * Free the components of a restart context
+ */
+void mbedtls_pk_restart_free( mbedtls_pk_restart_ctx *ctx )
+{
+ if( ctx == NULL )
+ return;
+
+ mbedtls_ecdsa_restart_free( &ctx->ecdsa );
+}
+#endif /* MBEDTLS_ECP_RESTARTABLE */
+
/*
* Get pk_info structure from type
*/
@@ -182,7 +203,7 @@
mbedtls_md_type_t md_alg,
const unsigned char *hash, size_t hash_len,
const unsigned char *sig, size_t sig_len,
- void *rs_ctx )
+ mbedtls_pk_restart_ctx *rs_ctx )
{
if( ctx == NULL || ctx->pk_info == NULL ||
pk_hashlen_helper( md_alg, &hash_len ) != 0 )
@@ -282,7 +303,7 @@
const unsigned char *hash, size_t hash_len,
unsigned char *sig, size_t *sig_len,
int (*f_rng)(void *, unsigned char *, size_t), void *p_rng,
- void *rs_ctx )
+ mbedtls_pk_restart_ctx *rs_ctx )
{
if( ctx == NULL || ctx->pk_info == NULL ||
pk_hashlen_helper( md_alg, &hash_len ) != 0 )