1 // tiger.h - originally written and placed in the public domain by Wei Dai 2 3 /// \file tiger.h 4 /// \brief Classes for the Tiger message digest 5 /// \details Crypto++ provides the original Tiger hash that was 6 /// submitted to the NESSIE project. The implementation is different 7 /// from the revised Tiger2 hash. 8 /// \sa <a href="https://www.cryptopp.com/wiki/Tiger">Tiger</a> and 9 /// <a href="http://www.cs.technion.ac.il/~biham/Reports/Tiger/">Tiger: 10 /// A Fast New Cryptographic Hash Function</a> 11 /// \since Crypto++ 2.1 12 13 #ifndef CRYPTOPP_TIGER_H 14 #define CRYPTOPP_TIGER_H 15 16 #include "config.h" 17 #include "iterhash.h" 18 19 // Clang 3.3 integrated assembler crash on Linux. Clang 3.4 due to compiler 20 // error with .intel_syntax, http://llvm.org/bugs/show_bug.cgi?id=24232 21 #if CRYPTOPP_BOOL_X32 || defined(CRYPTOPP_DISABLE_MIXED_ASM) 22 # define CRYPTOPP_DISABLE_TIGER_ASM 1 23 #endif 24 NAMESPACE_BEGIN(CryptoPP)25NAMESPACE_BEGIN(CryptoPP) 26 27 /// \brief Tiger message digest 28 /// \details Crypto++ provides the original Tiger hash that was 29 /// submitted to the NESSIE project. The implementation is different 30 /// from the revised Tiger2 hash. 31 /// \sa <a href="https://www.cryptopp.com/wiki/Tiger">Tiger</a> and 32 /// <a href="http://www.cs.technion.ac.il/~biham/Reports/Tiger/">Tiger: 33 /// A Fast New Cryptographic Hash Function</a> 34 /// \since Crypto++ 2.1 35 class Tiger : public IteratedHashWithStaticTransform<word64, LittleEndian, 64, 24, Tiger> 36 { 37 public: 38 CRYPTOPP_STATIC_CONSTEXPR const char* StaticAlgorithmName() {return "Tiger";} 39 std::string AlgorithmProvider() const; 40 41 /// \brief Initialize state array 42 /// \param state the state of the hash 43 static void InitState(HashWordType *state); 44 /// \brief Operate the hash 45 /// \param digest the state of the hash 46 /// \param data the data to be digested 47 static void Transform(word64 *digest, const word64 *data); 48 /// \brief Computes the hash of the current message 49 /// \param digest a pointer to the buffer to receive the hash 50 /// \param digestSize the size of the truncated digest, in bytes 51 /// \details TruncatedFinal() call Final() and then copies digestSize bytes to digest. 52 /// The hash is restarted the hash for the next message. 53 void TruncatedFinal(byte *digest, size_t digestSize); 54 55 protected: 56 static const word64 table[4*256+3]; 57 }; 58 59 NAMESPACE_END 60 61 #endif 62