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Diffstat (limited to '')
-rw-r--r-- | comm/third_party/botan/src/lib/hash/keccak/keccak.h | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/comm/third_party/botan/src/lib/hash/keccak/keccak.h b/comm/third_party/botan/src/lib/hash/keccak/keccak.h new file mode 100644 index 0000000000..083d7fc5a6 --- /dev/null +++ b/comm/third_party/botan/src/lib/hash/keccak/keccak.h @@ -0,0 +1,51 @@ +/* +* Keccak +* (C) 2010 Jack Lloyd +* +* Botan is released under the Simplified BSD License (see license.txt) +*/ + +#ifndef BOTAN_KECCAK_H_ +#define BOTAN_KECCAK_H_ + +#include <botan/hash.h> +#include <botan/secmem.h> +#include <string> + +namespace Botan { + +BOTAN_FUTURE_INTERNAL_HEADER(keccak.h) + +/** +* Keccak[1600], a SHA-3 candidate +*/ +class BOTAN_PUBLIC_API(2,0) Keccak_1600 final : public HashFunction + { + public: + + /** + * @param output_bits the size of the hash output; must be one of + * 224, 256, 384, or 512 + */ + explicit Keccak_1600(size_t output_bits = 512); + + size_t hash_block_size() const override { return m_bitrate / 8; } + size_t output_length() const override { return m_output_bits / 8; } + + HashFunction* clone() const override; + std::unique_ptr<HashFunction> copy_state() const override; + std::string name() const override; + void clear() override; + + private: + void add_data(const uint8_t input[], size_t length) override; + void final_result(uint8_t out[]) override; + + size_t m_output_bits, m_bitrate; + secure_vector<uint64_t> m_S; + size_t m_S_pos; + }; + +} + +#endif |