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// adler32.h - originally written and placed in the public domain by Wei Dai
/// \file adler32.h
/// \brief Class file for ADLER-32 checksum calculations
#ifndef CRYPTOPP_ADLER32_H
#define CRYPTOPP_ADLER32_H
#include "cryptlib.h"
NAMESPACE_BEGIN(CryptoPP)
/// ADLER-32 checksum calculations
class Adler32 : public HashTransformation
{
public:
CRYPTOPP_CONSTANT(DIGESTSIZE = 4);
Adler32() {Reset();}
void Update(const byte *input, size_t length);
void TruncatedFinal(byte *hash, size_t size);
unsigned int DigestSize() const {return DIGESTSIZE;}
CRYPTOPP_STATIC_CONSTEXPR const char* StaticAlgorithmName() {return "Adler32";}
std::string AlgorithmName() const {return StaticAlgorithmName();}
private:
void Reset() {m_s1 = 1; m_s2 = 0;}
word16 m_s1, m_s2;
};
NAMESPACE_END
#endif
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