camellia.h

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#ifndef CRYPTOPP_CAMELLIA_H
#define CRYPTOPP_CAMELLIA_H

#include "config.h"

#ifdef WORD64_AVAILABLE

/** \file
*/

#include "seckey.h"
#include "secblock.h"

NAMESPACE_BEGIN(CryptoPP)

//! _
struct Camellia_Info : public FixedBlockSize<16>, public VariableKeyLength<16, 16, 32, 8>
{
        static const char *StaticAlgorithmName() {return "Camellia";}
};

/// <a href="http://www.weidai.com/scan-mirror/cs.html#Camellia">Camellia</a>
class Camellia : public Camellia_Info, public BlockCipherDocumentation
{
        class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<Camellia_Info>
        {
        public:
                void UncheckedSetKey(const byte *key, unsigned int keylen, const NameValuePairs &params);
                void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
                unsigned int BlockAlignment() const {return 8;}

        protected:
                static word64 F(word64 X);
                static void FLlayer(word64 *x, word64 K1, word64 K2);

                static const byte s1[256];
                static const byte s2[256];
                static const byte s3[256];
                static const byte s4[256];

                unsigned int m_rounds;
                SecBlock<word64> m_key;
        };

public:
        typedef BlockCipherFinal<ENCRYPTION, Base> Encryption;
        typedef BlockCipherFinal<DECRYPTION, Base> Decryption;
};

typedef Camellia::Encryption CamelliaEncryption;
typedef Camellia::Decryption CamelliaDecryption;

NAMESPACE_END

#endif

#endif

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