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53 lines
1.8 KiB
C++
53 lines
1.8 KiB
C++
// sosemanuk.h - 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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#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 due to "Inline assembly operands don't work with .intel_syntax"
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// https://llvm.org/bugs/show_bug.cgi?id=24232
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#if CRYPTOPP_BOOL_X32 || defined(CRYPTOPP_DISABLE_INTEL_ASM)
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# define CRYPTOPP_DISABLE_SOSEMANUK_ASM
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#endif
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NAMESPACE_BEGIN(CryptoPP)
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//! algorithm info
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struct SosemanukInfo : public VariableKeyLength<16, 1, 32, 1, SimpleKeyingInterface::UNIQUE_IV, 16>
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{
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static const char * StaticAlgorithmName() {return "Sosemanuk";}
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};
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//! _
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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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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) && !defined(CRYPTOPP_DISABLE_SOSEMANUK_ASM)
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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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//! <a href="http://www.cryptolounge.org/wiki/Sosemanuk">Sosemanuk</a>
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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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