crypto/secure_util.cc

   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