haval.h

各种加密算法的集合

#ifndef CRYPTOPP_HAVAL_H 
#define CRYPTOPP_HAVAL_H 
 
#include "iterhash.h" 
 
NAMESPACE_BEGIN(CryptoPP) 
 
class HAVAL : public IteratedHash<word32> 
{ 
public: 
	enum {DIGESTSIZE = 32, DATASIZE = 128, VERSION = 1}; 
 
	// digestSize can be 16, 20, 24, 28, or 32 
	// pass can be 3, 4 or 5 
	HAVAL(unsigned int digestSize=DIGESTSIZE, unsigned int passes=3); 
	void Final(byte *hash); 
	unsigned int DigestSize() const {return digestSize;} 
 
	static void CorrectEndianess(word32 *out, const word32 *in, unsigned int byteCount) 
	{ 
#ifndef IS_LITTLE_ENDIAN 
		byteReverse(out, in, byteCount); 
#else 
		if (in!=out) 
			memcpy(out, in, byteCount); 
#endif 
	} 
 
protected: 
	static const unsigned int wi2[32], wi3[32], wi4[32], wi5[32]; 
	static const word32 mc2[32], mc3[32], mc4[32], mc5[32]; 
 
private: 
	void Init(); 
	void HashBlock(const word32 *input); 
	void Tailor(unsigned int FPTLEN); 
	inline void vTransform(word32 *buf, const word32 *in); 
 
	const unsigned int digestSize, pass; 
}; 
 
class HAVAL3 : public HAVAL 
{ 
public: 
	HAVAL3(unsigned int digestSize=DIGESTSIZE) : HAVAL(digestSize, 3) {} 
	static void Transform(word32 *buf, const word32 *in); 
}; 
 
class HAVAL4 : public HAVAL 
{ 
public: 
	HAVAL4(unsigned int digestSize=DIGESTSIZE) : HAVAL(digestSize, 4) {} 
	static void Transform(word32 *buf, const word32 *in); 
}; 
 
class HAVAL5 : public HAVAL 
{ 
public: 
	HAVAL5(unsigned int digestSize=DIGESTSIZE) : HAVAL(digestSize, 5) {} 
	static void Transform(word32 *buf, const word32 *in); 
}; 
 
NAMESPACE_END 
 
#endif