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/*
* SHA-{384,512}
* (C) 1999-2007 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_SHA_64BIT_H__
#define BOTAN_SHA_64BIT_H__
#include <botan/mdx_hash.h>
namespace Botan {
/**
* Base class for the 64-bit SHA-2 hashes (SHA-384 and SHA-512)
*/
class BOTAN_DLL SHA_384_512_BASE : public MDx_HashFunction
{
protected:
void clear();
/**
* @param out output size in bytes
*/
SHA_384_512_BASE(u32bit out) :
MDx_HashFunction(out, 128, true, true, 16) {}
SecureVector<u64bit, 8> digest;
private:
void compress_n(const byte[], u32bit blocks);
void copy_out(byte[]);
SecureVector<u64bit, 80> W;
};
/**
* SHA-384
*/
class BOTAN_DLL SHA_384 : public SHA_384_512_BASE
{
public:
void clear();
std::string name() const { return "SHA-384"; }
HashFunction* clone() const { return new SHA_384; }
SHA_384() : SHA_384_512_BASE(48) { clear(); }
};
/**
* SHA-512
*/
class BOTAN_DLL SHA_512 : public SHA_384_512_BASE
{
public:
void clear();
std::string name() const { return "SHA-512"; }
HashFunction* clone() const { return new SHA_512; }
SHA_512() : SHA_384_512_BASE(64) { clear(); }
};
}
#endif
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