diff options
Diffstat (limited to 'comm/third_party/botan/src/lib/hash/checksum/adler32/adler32.h')
-rw-r--r-- | comm/third_party/botan/src/lib/hash/checksum/adler32/adler32.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/comm/third_party/botan/src/lib/hash/checksum/adler32/adler32.h b/comm/third_party/botan/src/lib/hash/checksum/adler32/adler32.h new file mode 100644 index 0000000000..cd84a7597e --- /dev/null +++ b/comm/third_party/botan/src/lib/hash/checksum/adler32/adler32.h @@ -0,0 +1,40 @@ +/* +* Adler32 +* (C) 1999-2007 Jack Lloyd +* +* Botan is released under the Simplified BSD License (see license.txt) +*/ + +#ifndef BOTAN_ADLER32_H_ +#define BOTAN_ADLER32_H_ + +#include <botan/hash.h> + +BOTAN_FUTURE_INTERNAL_HEADER(adler32.h) + +namespace Botan { + +/** +* The Adler32 checksum, used in zlib +*/ +class BOTAN_PUBLIC_API(2,0) Adler32 final : public HashFunction + { + public: + std::string name() const override { return "Adler32"; } + size_t output_length() const override { return 4; } + HashFunction* clone() const override { return new Adler32; } + std::unique_ptr<HashFunction> copy_state() const override; + + void clear() override { m_S1 = 1; m_S2 = 0; } + + Adler32() { clear(); } + ~Adler32() { clear(); } + private: + void add_data(const uint8_t[], size_t) override; + void final_result(uint8_t[]) override; + uint16_t m_S1, m_S2; + }; + +} + +#endif |