| // Copyright 2015 The Chromium OS 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 CRYPTOHOME_CRC32_H_ |
| #define CRYPTOHOME_CRC32_H_ |
| |
| #include <limits> |
| |
| #include <stdint.h> |
| |
| #include <base/metrics/crc32.h> |
| |
| namespace cryptohome { |
| |
| static inline uint32_t Crc32(const void* buffer, uint32_t len) { |
| // The base::Crc32 method should really be called "UpdateCRC". Initial |
| // checksum needs to be initialized to all 1's; final value is 1's |
| // complement. |
| // See https://www.w3.org/TR/PNG/#D-CRCAppendix. |
| // TODO(b/168049518): Move to libchrome. |
| return ~base::Crc32(std::numeric_limits<uint32_t>::max(), buffer, len); |
| } |
| |
| } // namespace cryptohome |
| |
| #endif // CRYPTOHOME_CRC32_H_ |
