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/*
* Copyright (C) 2007-2012 Xagasoft, All rights reserved.
*
* This file is part of the libbu++ library and is released under the
* terms of the license contained in the file LICENSE.
*/
#ifndef SHA1_H
#define SHA1_H
#include <stdint.h>
#include "bu/cryptohash.h"
namespace Bu
{
/**
* Calculates SHA-1 sums. This is based strongly on code from Michael D.
* Leonhard who released his code under the terms of the MIT license,
* thank you! Check out his website http://tamale.net he has a lot of
* cool stuff there.
*/
class Sha1 : public CryptoHash
{
public:
Sha1();
virtual ~Sha1();
virtual void reset();
virtual void setSalt( const Bu::String &sSalt );
virtual void addData( const void *sData, int iSize );
using CryptoHash::addData;
virtual String getResult();
virtual void writeResult( Stream &sOut );
void update( const char* data, int num );
unsigned char* getDigest();
// utility methods
private:
static uint32_t lrot( uint32_t x, int bits );
static void toBigEndian( uint32_t in, unsigned char* out );
void process();
private:
uint32_t uH0, uH1, uH2, uH3, uH4;
unsigned char uBytes[64];
int iUnprocessedBytes;
uint32_t uTotalBytes;
};
};
#endif
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