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haval.h

00001 #ifndef CRYPTOPP_HAVAL_H 00002 #define CRYPTOPP_HAVAL_H 00003 00004 #include "iterhash.h" 00005 00006 NAMESPACE_BEGIN(CryptoPP) 00007 00008 /// <a href="http://www.weidai.com/scan-mirror/md.html#HAVAL">HAVAL</a> 00009 class HAVAL : public IteratedHash<word32, LittleEndian, 128> 00010 { 00011 public: 00012 enum {DIGESTSIZE = 32, HAVAL_VERSION = 1}; 00013 00014 /// digestSize can be 16, 20, 24, 28, or 32 (Default=32)<br> 00015 /// pass can be 3, 4 or 5 (Default=3) 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 /// <a href="http://www.weidai.com/scan-mirror/md.html#HAVAL">HAVAL</a> with 3 passes 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 /// <a href="http://www.weidai.com/scan-mirror/md.html#HAVAL">HAVAL</a> with 4 passes 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 /// <a href="http://www.weidai.com/scan-mirror/md.html#HAVAL">HAVAL</a> with 5 passes 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

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