Do the error handling in pkey_rsa_decrypt in constant time
/*
- * Copyright 2006-2018 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2006-2019 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* https://www.openssl.org/source/license.html
*/
+#include "internal/constant_time_locl.h"
+
#include <stdio.h>
#include "internal/cryptlib.h"
#include <openssl/asn1t.h>
@@ -340,10 +342,9 @@ static int pkey_rsa_decrypt(EVP_PKEY_CTX *ctx,
ret = RSA_private_decrypt(inlen, in, out, ctx->pkey->pkey.rsa,
rctx->pad_mode);
}
- if (ret < 0)
+ *outlen = constant_time_select_s(constant_time_msb_s(ret), *outlen, ret);
+ ret = constant_time_select_int(constant_time_msb(ret), ret, 1);
return ret;
- *outlen = ret;
- return 1;
}
static int check_padding_md(const EVP_MD *md, int padding)
