sosemanuk.h

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// sosemanuk.h - written and placed in the public domain by Wei Dai


#ifndef CRYPTOPP_SOSEMANUK_H
#define CRYPTOPP_SOSEMANUK_H

#include "strciphr.h"
#include "secblock.h"

// Clang due to "Inline assembly operands don't work with .intel_syntax"
//   https://llvm.org/bugs/show_bug.cgi?id=24232
#if CRYPTOPP_BOOL_X32 || defined(CRYPTOPP_DISABLE_INTEL_ASM)
# define CRYPTOPP_DISABLE_SOSEMANUK_ASM
#endif

NAMESPACE_BEGIN(CryptoPP)

struct SosemanukInfo : public VariableKeyLength<16, 1, 32, 1, SimpleKeyingInterface::UNIQUE_IV, 16>
{
        CRYPTOPP_STATIC_CONSTEXPR const char* StaticAlgorithmName() {return "Sosemanuk";}
};

class SosemanukPolicy : public AdditiveCipherConcretePolicy<word32, 20>, public SosemanukInfo
{
protected:
        void CipherSetKey(const NameValuePairs &params, const byte *key, size_t length);
        void OperateKeystream(KeystreamOperation operation, byte *output, const byte *input, size_t iterationCount);
        void CipherResynchronize(byte *keystreamBuffer, const byte *iv, size_t length);
        bool CipherIsRandomAccess() const {return false;}
#if (CRYPTOPP_BOOL_X86 || CRYPTOPP_BOOL_X32 || CRYPTOPP_BOOL_X64) && !defined(CRYPTOPP_DISABLE_SOSEMANUK_ASM)
        unsigned int GetAlignment() const;
        unsigned int GetOptimalBlockSize() const;
#endif

        FixedSizeSecBlock<word32, 25*4> m_key;
        FixedSizeAlignedSecBlock<word32, 12> m_state;
};

struct Sosemanuk : public SosemanukInfo, public SymmetricCipherDocumentation
{
        typedef SymmetricCipherFinal<ConcretePolicyHolder<SosemanukPolicy, AdditiveCipherTemplate<> >, SosemanukInfo> Encryption;
        typedef Encryption Decryption;
};

NAMESPACE_END

#endif