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