00001 #ifndef CRYPTOPP_HAVAL_H
00002 #define CRYPTOPP_HAVAL_H
00003
00004 #include "iterhash.h"
00005
00006 NAMESPACE_BEGIN(CryptoPP)
00007
00008
00009 class HAVAL : public IteratedHash<word32, LittleEndian, 128>
00010 {
00011 public:
00012 enum {DIGESTSIZE = 32, HAVAL_VERSION = 1};
00013
00014
00015
00016 HAVAL(unsigned int digestSize=DIGESTSIZE, unsigned int passes=3);
00017 void TruncatedFinal(byte *hash, unsigned int size);
00018 unsigned int DigestSize() const {return digestSize;}
00019
00020 protected:
00021 static const unsigned int wi2[32], wi3[32], wi4[32], wi5[32];
00022 static const word32 mc2[32], mc3[32], mc4[32], mc5[32];
00023
00024 void Init();
00025 void Tailor(unsigned int FPTLEN);
00026 void vTransform(const word32 *in);
00027
00028 const unsigned int digestSize, pass;
00029 };
00030
00031
00032 class HAVAL3 : public HAVAL
00033 {
00034 public:
00035 HAVAL3(unsigned int digestSize=DIGESTSIZE) : HAVAL(digestSize, 3) {}
00036 static void Transform(word32 *buf, const word32 *in);
00037 };
00038
00039
00040 class HAVAL4 : public HAVAL
00041 {
00042 public:
00043 HAVAL4(unsigned int digestSize=DIGESTSIZE) : HAVAL(digestSize, 4) {}
00044 static void Transform(word32 *buf, const word32 *in);
00045 };
00046
00047
00048 class HAVAL5 : public HAVAL
00049 {
00050 public:
00051 HAVAL5(unsigned int digestSize=DIGESTSIZE) : HAVAL(digestSize, 5) {}
00052 static void Transform(word32 *buf, const word32 *in);
00053 };
00054
00055 NAMESPACE_END
00056
00057 #endif