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/*
* Adler32
* (C) 1999-2007 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_ADLER32_H__
#define BOTAN_ADLER32_H__
#include <botan/hash.h>
namespace Botan {
/**
* The Adler32 checksum, used in zlib
*/
class BOTAN_DLL Adler32 : public HashFunction
{
public:
void clear() { S1 = 1; S2 = 0; }
std::string name() const { return "Adler32"; }
HashFunction* clone() const { return new Adler32; }
Adler32() : HashFunction(4) { clear(); }
~Adler32() { clear(); }
private:
void add_data(const byte[], u32bit);
void final_result(byte[]);
void hash(const byte[], u32bit);
u16bit S1, S2;
};
}
#endif
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