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63 lines
2.4 KiB
63 lines
2.4 KiB
4 years ago
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// sosemanuk.h - originally written and placed in the public domain by Wei Dai
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/// \file sosemanuk.h
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/// \brief Classes for Sosemanuk stream cipher
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/// \since Crypto++ 5.5
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#ifndef CRYPTOPP_SOSEMANUK_H
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#define CRYPTOPP_SOSEMANUK_H
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#include "strciphr.h"
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#include "secblock.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_SOSEMANUK_ASM 1
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#endif
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NAMESPACE_BEGIN(CryptoPP)
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/// \brief Sosemanuk stream cipher information
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/// \since Crypto++ 5.5
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struct SosemanukInfo : public VariableKeyLength<16, 1, 32, 1, SimpleKeyingInterface::UNIQUE_IV, 16>
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{
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CRYPTOPP_STATIC_CONSTEXPR const char* StaticAlgorithmName() {return "Sosemanuk";}
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};
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/// \brief Sosemanuk stream cipher implementation
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/// \since Crypto++ 5.5
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class SosemanukPolicy : public AdditiveCipherConcretePolicy<word32, 20>, public SosemanukInfo
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{
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protected:
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std::string AlgorithmProvider() const;
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void CipherSetKey(const NameValuePairs ¶ms, const byte *key, size_t length);
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void OperateKeystream(KeystreamOperation operation, byte *output, const byte *input, size_t iterationCount);
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void CipherResynchronize(byte *keystreamBuffer, const byte *iv, size_t length);
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bool CipherIsRandomAccess() const {return false;}
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#if (CRYPTOPP_BOOL_X86 || CRYPTOPP_BOOL_X32 || CRYPTOPP_BOOL_X64)
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unsigned int GetAlignment() const;
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unsigned int GetOptimalBlockSize() const;
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#endif
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FixedSizeSecBlock<word32, 25*4> m_key;
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FixedSizeAlignedSecBlock<word32, 12> m_state;
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};
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/// \brief Sosemanuk stream cipher
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/// \details is a stream cipher developed by Come Berbain, Olivier Billet, Anne Canteaut, Nicolas Courtois,
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/// Henri Gilbert, Louis Goubin, Aline Gouget, Louis Granboulan, Cédric Lauradoux, Marine Minier, Thomas
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/// Pornin and Hervé Sibert. Sosemanuk is one of the final four Profile 1 (software) ciphers selected for
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/// the eSTREAM Portfolio.
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/// \sa <a href="http://www.cryptolounge.org/wiki/Sosemanuk">Sosemanuk</a>
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/// \since Crypto++ 5.5
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struct Sosemanuk : public SosemanukInfo, public SymmetricCipherDocumentation
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{
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typedef SymmetricCipherFinal<ConcretePolicyHolder<SosemanukPolicy, AdditiveCipherTemplate<> >, SosemanukInfo> Encryption;
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typedef Encryption Decryption;
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};
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NAMESPACE_END
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#endif
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