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Diffstat (limited to 'crypto/secure_util.h')
| -rw-r--r-- | crypto/secure_util.h | 29 |
1 files changed, 0 insertions, 29 deletions
diff --git a/crypto/secure_util.h b/crypto/secure_util.h deleted file mode 100644 index cfe05ca155..0000000000 --- a/crypto/secure_util.h +++ /dev/null @@ -1,29 +0,0 @@ -// Copyright (c) 2012 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. - -#ifndef CRYPTO_SECURE_UTIL_H_ -#define CRYPTO_SECURE_UTIL_H_ - -#include <stddef.h> - -#include "crypto/crypto_export.h" - -namespace crypto { - -// Performs a constant-time comparison of two strings, returning true if the -// strings are equal. -// -// For cryptographic operations, comparison functions such as memcmp() may -// expose side-channel information about input, allowing an attacker to -// perform timing analysis to determine what the expected bits should be. In -// order to avoid such attacks, the comparison must execute in constant time, -// so as to not to reveal to the attacker where the difference(s) are. -// For an example attack, see -// http://groups.google.com/group/keyczar-discuss/browse_thread/thread/5571eca0948b2a13 -CRYPTO_EXPORT bool SecureMemEqual(const void* s1, const void* s2, size_t n); - -} // namespace crypto - -#endif // CRYPTO_SECURE_UTIL_H_ - |