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      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 "crypto/secure_util.h"
      6 
      7 namespace crypto {
      8 
      9 bool SecureMemEqual(const void* s1, const void* s2, size_t n) {
     10   const unsigned char* s1_ptr = reinterpret_cast<const unsigned char*>(s1);
     11   const unsigned char* s2_ptr = reinterpret_cast<const unsigned char*>(s2);
     12   unsigned char tmp = 0;
     13   for (size_t i = 0; i < n; ++i, ++s1_ptr, ++s2_ptr)
     14     tmp |= *s1_ptr ^ *s2_ptr;
     15   return (tmp == 0);
     16 }
     17 
     18 }  // namespace crypto
     19 
     20