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/*
* SHA-{384,512}
* (C) 1999-2010,2015 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#ifndef BOTAN_SHA_64BIT_H_
#define BOTAN_SHA_64BIT_H_
#include <botan/internal/mdx_hash.h>
namespace Botan {
/**
* SHA-384
*/
class SHA_384 final : public MDx_HashFunction
{
public:
std::string name() const override { return "SHA-384"; }
size_t output_length() const override { return 48; }
HashFunction* clone() const override { return new SHA_384; }
std::unique_ptr<HashFunction> copy_state() const override;
std::string provider() const override;
void clear() override;
SHA_384() : MDx_HashFunction(128, true, true, 16), m_digest(8)
{ clear(); }
private:
void compress_n(const uint8_t[], size_t blocks) override;
void copy_out(uint8_t[]) override;
secure_vector<uint64_t> m_digest;
};
/**
* SHA-512
*/
class SHA_512 final : public MDx_HashFunction
{
public:
std::string name() const override { return "SHA-512"; }
size_t output_length() const override { return 64; }
HashFunction* clone() const override { return new SHA_512; }
std::unique_ptr<HashFunction> copy_state() const override;
std::string provider() const override;
void clear() override;
/*
* Perform a SHA-512 compression. For internal use
*/
static void compress_digest(secure_vector<uint64_t>& digest,
const uint8_t input[],
size_t blocks);
SHA_512() : MDx_HashFunction(128, true, true, 16), m_digest(8)
{ clear(); }
private:
void compress_n(const uint8_t[], size_t blocks) override;
void copy_out(uint8_t[]) override;
static const uint64_t K[80];
#if defined(BOTAN_HAS_SHA2_64_BMI2)
static void compress_digest_bmi2(secure_vector<uint64_t>& digest,
const uint8_t input[],
size_t blocks);
#endif
secure_vector<uint64_t> m_digest;
};
/**
* SHA-512/256
*/
class SHA_512_256 final : public MDx_HashFunction
{
public:
std::string name() const override { return "SHA-512-256"; }
size_t output_length() const override { return 32; }
HashFunction* clone() const override { return new SHA_512_256; }
std::unique_ptr<HashFunction> copy_state() const override;
std::string provider() const override;
void clear() override;
SHA_512_256() : MDx_HashFunction(128, true, true, 16), m_digest(8) { clear(); }
private:
void compress_n(const uint8_t[], size_t blocks) override;
void copy_out(uint8_t[]) override;
secure_vector<uint64_t> m_digest;
};
}
#endif
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