1#ifndef CRYPTOPP_ADLER32_H
2#define CRYPTOPP_ADLER32_H
3
4#include "cryptlib.h"
5
6NAMESPACE_BEGIN(CryptoPP)
7
8//! ADLER-32 checksum calculations
9class Adler32 : public HashTransformation
10{
11public:
12	CRYPTOPP_CONSTANT(DIGESTSIZE = 4)
13	Adler32() {Reset();}
14	void Update(const byte *input, size_t length);
15	void TruncatedFinal(byte *hash, size_t size);
16	unsigned int DigestSize() const {return DIGESTSIZE;}
17    static const char * StaticAlgorithmName() {return "Adler32";}
18    std::string AlgorithmName() const {return StaticAlgorithmName();}
19
20private:
21	void Reset() {m_s1 = 1; m_s2 = 0;}
22
23	word16 m_s1, m_s2;
24};
25
26NAMESPACE_END
27
28#endif
29