diff options
Diffstat (limited to 'comm/third_party/botan/src/lib/hash/checksum/crc32/crc32.h')
-rw-r--r-- | comm/third_party/botan/src/lib/hash/checksum/crc32/crc32.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/comm/third_party/botan/src/lib/hash/checksum/crc32/crc32.h b/comm/third_party/botan/src/lib/hash/checksum/crc32/crc32.h new file mode 100644 index 0000000000..f712b42cac --- /dev/null +++ b/comm/third_party/botan/src/lib/hash/checksum/crc32/crc32.h @@ -0,0 +1,40 @@ +/* +* CRC32 +* (C) 1999-2007 Jack Lloyd +* +* Botan is released under the Simplified BSD License (see license.txt) +*/ + +#ifndef BOTAN_CRC32_H_ +#define BOTAN_CRC32_H_ + +#include <botan/hash.h> + +BOTAN_FUTURE_INTERNAL_HEADER(crc32.h) + +namespace Botan { + +/** +* 32-bit cyclic redundancy check +*/ +class BOTAN_PUBLIC_API(2,0) CRC32 final : public HashFunction + { + public: + std::string name() const override { return "CRC32"; } + size_t output_length() const override { return 4; } + HashFunction* clone() const override { return new CRC32; } + std::unique_ptr<HashFunction> copy_state() const override; + + void clear() override { m_crc = 0xFFFFFFFF; } + + CRC32() { clear(); } + ~CRC32() { clear(); } + private: + void add_data(const uint8_t[], size_t) override; + void final_result(uint8_t[]) override; + uint32_t m_crc; + }; + +} + +#endif |