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/*
* SHA-{224,256}
* (C) 1999-2010 Jack Lloyd
* 2007 FlexSecure GmbH
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_SHA_224_256_H__
#define BOTAN_SHA_224_256_H__
#include <botan/mdx_hash.h>
namespace Botan {
/**
* SHA-224
*/
class BOTAN_DLL SHA_224 : public MDx_HashFunction
{
public:
void clear();
std::string name() const { return "SHA-224"; }
HashFunction* clone() const { return new SHA_224; }
SHA_224() : MDx_HashFunction(28, 64, true, true), W(64), digest(8)
{ clear(); }
private:
void compress_n(const byte[], u32bit blocks);
void copy_out(byte[]);
SecureVector<u32bit> W, digest;
};
/**
* SHA-256
*/
class BOTAN_DLL SHA_256 : public MDx_HashFunction
{
public:
void clear();
std::string name() const { return "SHA-256"; }
HashFunction* clone() const { return new SHA_256; }
SHA_256() : MDx_HashFunction(32, 64, true, true), W(64), digest(8)
{ clear(); }
private:
void compress_n(const byte[], u32bit blocks);
void copy_out(byte[]);
SecureVector<u32bit> W, digest;
};
}
#endif
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