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Diffstat (limited to 'crypto/secure_util.cc')
-rw-r--r-- | crypto/secure_util.cc | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/crypto/secure_util.cc b/crypto/secure_util.cc new file mode 100644 index 0000000..3fe8aa9 --- /dev/null +++ b/crypto/secure_util.cc @@ -0,0 +1,19 @@ +// Copyright (c) 2011 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "crypto/secure_util.h" + +namespace crypto { + +bool SecureMemEqual(const void* s1, const void* s2, size_t n) { + const unsigned char* s1_ptr = reinterpret_cast<const unsigned char*>(s1); + const unsigned char* s2_ptr = reinterpret_cast<const unsigned char*>(s2); + unsigned char tmp = 0; + for (size_t i = 0; i < n; ++i, ++s1_ptr, ++s2_ptr) + tmp |= *s1_ptr ^ *s2_ptr; + return (tmp == 0); +} + +} // namespace crypto + |