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61 lines
2.2 KiB
C++
61 lines
2.2 KiB
C++
// tiger.h - originally written and placed in the public domain by Wei Dai
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/// \file tiger.h
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/// \brief Classes for the Tiger message digest
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/// \details Crypto++ provides the original Tiger hash that was
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/// submitted to the NESSIE project. The implementation is different
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/// from the revised Tiger2 hash.
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/// \sa <a href="https://www.cryptopp.com/wiki/Tiger">Tiger</a> and
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/// <a href="http://www.cs.technion.ac.il/~biham/Reports/Tiger/">Tiger:
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/// A Fast New Cryptographic Hash Function</a>
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/// \since Crypto++ 2.1
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#ifndef CRYPTOPP_TIGER_H
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#define CRYPTOPP_TIGER_H
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#include "config.h"
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#include "iterhash.h"
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// Clang 3.3 integrated assembler crash on Linux. Clang 3.4 due to compiler
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// error with .intel_syntax, http://llvm.org/bugs/show_bug.cgi?id=24232
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#if CRYPTOPP_BOOL_X32 || defined(CRYPTOPP_DISABLE_MIXED_ASM)
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# define CRYPTOPP_DISABLE_TIGER_ASM 1
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#endif
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NAMESPACE_BEGIN(CryptoPP)
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/// \brief Tiger message digest
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/// \details Crypto++ provides the original Tiger hash that was
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/// submitted to the NESSIE project. The implementation is different
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/// from the revised Tiger2 hash.
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/// \sa <a href="https://www.cryptopp.com/wiki/Tiger">Tiger</a> and
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/// <a href="http://www.cs.technion.ac.il/~biham/Reports/Tiger/">Tiger:
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/// A Fast New Cryptographic Hash Function</a>
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/// \since Crypto++ 2.1
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class Tiger : public IteratedHashWithStaticTransform<word64, LittleEndian, 64, 24, Tiger>
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{
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public:
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CRYPTOPP_STATIC_CONSTEXPR const char* StaticAlgorithmName() {return "Tiger";}
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std::string AlgorithmProvider() const;
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/// \brief Initialize state array
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/// \param state the state of the hash
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static void InitState(HashWordType *state);
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/// \brief Operate the hash
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/// \param digest the state of the hash
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/// \param data the data to be digested
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static void Transform(word64 *digest, const word64 *data);
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/// \brief Computes the hash of the current message
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/// \param digest a pointer to the buffer to receive the hash
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/// \param digestSize the size of the truncated digest, in bytes
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/// \details TruncatedFinal() calls Final() and then copies digestSize bytes to digest.
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/// The hash is restarted the hash for the next message.
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void TruncatedFinal(byte *digest, size_t digestSize);
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protected:
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static const word64 table[4*256+3];
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};
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NAMESPACE_END
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#endif
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