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/*
* Whirlpool
* (C) 1999-2007 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#ifndef BOTAN_WHIRLPOOL_H_
#define BOTAN_WHIRLPOOL_H_
#include <botan/internal/mdx_hash.h>
namespace Botan {
/**
* Whirlpool
*/
class Whirlpool final : public HashFunction {
public:
using digest_type = secure_vector<uint64_t>;
static constexpr MD_Endian byte_endianness = MD_Endian::Big;
static constexpr MD_Endian bit_endianness = MD_Endian::Big;
static constexpr size_t block_bytes = 64;
static constexpr size_t output_bytes = 64;
static constexpr size_t ctr_bytes = 32;
static void compress_n(digest_type& digest, std::span<const uint8_t> input, size_t blocks);
static void init(digest_type& digest);
public:
std::string name() const override { return "Whirlpool"; }
size_t output_length() const override { return output_bytes; }
size_t hash_block_size() const override { return block_bytes; }
std::unique_ptr<HashFunction> new_object() const override;
std::unique_ptr<HashFunction> copy_state() const override;
void clear() override { m_md.clear(); }
private:
void add_data(std::span<const uint8_t> input) override;
void final_result(std::span<uint8_t> output) override;
private:
MerkleDamgard_Hash<Whirlpool> m_md;
};
} // namespace Botan
#endif