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/*
* SHA-160
* (C) 1999-2007 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_SHA_160_H__
#define BOTAN_SHA_160_H__
#include <botan/mdx_hash.h>
namespace Botan {
/**
* NIST's SHA-160
*/
class BOTAN_DLL SHA_160 : public MDx_HashFunction
{
public:
std::string name() const { return "SHA-160"; }
size_t output_length() const { return 20; }
HashFunction* clone() const { return new SHA_160; }
void clear();
SHA_160() : MDx_HashFunction(64, true, true), digest(5), W(80)
{
clear();
}
protected:
/**
* Set a custom size for the W array. Normally 80, but some
* subclasses need slightly more for best performance/internal
* constraints
* @param W_size how big to make W
*/
SHA_160(size_t W_size) :
MDx_HashFunction(64, true, true), digest(5), W(W_size)
{
clear();
}
void compress_n(const byte[], size_t blocks);
void copy_out(byte[]);
/**
* The digest value, exposed for use by subclasses (asm, SSE2)
*/
secure_vector<u32bit> digest;
/**
* The message buffer, exposed for use by subclasses (asm, SSE2)
*/
secure_vector<u32bit> W;
};
}
#endif
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