1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #include <stddef.h>
6 
7 #include "crypto/secure_util.h"
8 
9 namespace crypto {
10 
SecureMemEqual(const void * s1,const void * s2,size_t n)11 bool SecureMemEqual(const void* s1, const void* s2, size_t n) {
12   const unsigned char* s1_ptr = reinterpret_cast<const unsigned char*>(s1);
13   const unsigned char* s2_ptr = reinterpret_cast<const unsigned char*>(s2);
14   unsigned char tmp = 0;
15   for (size_t i = 0; i < n; ++i, ++s1_ptr, ++s2_ptr)
16     tmp |= *s1_ptr ^ *s2_ptr;
17   return (tmp == 0);
18 }
19 
20 }  // namespace crypto
21 
22