mars.h

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// mars.h - originally written and placed in the public domain by Wei Dai
 
/// \file mars.h
/// \brief Classes for the MARS block cipher (IBM AES submission)
/// \since Crypto++ 3.0
 
#ifndef CRYPTOPP_MARS_H
#define CRYPTOPP_MARS_H
 
#include "seckey.h"
#include "secblock.h"
 
NAMESPACE_BEGIN(CryptoPP)
 
/// \brief MARS block cipher information
/// \since Crypto++ 3.0
struct MARS_Info : public FixedBlockSize<16>, public VariableKeyLength<16, 16, 56, 8>
{
    CRYPTOPP_STATIC_CONSTEXPR const char* StaticAlgorithmName() {return "MARS";}
};
 
/// \brief MARS block cipher
/// \sa <a href="http://www.cryptopp.com/wiki/MARS">MARS</a>
/// \since Crypto++ 3.0
class MARS : public MARS_Info, public BlockCipherDocumentation
{
    class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<MARS_Info>
    {
    public:
        void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs &params);
 
    protected:
        static const word32 Sbox[512];
 
        FixedSizeSecBlock<word32, 40> m_k;
    };
 
    class CRYPTOPP_NO_VTABLE Enc : public Base
    {
    public:
        void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
    };
 
    class CRYPTOPP_NO_VTABLE Dec : public Base
    {
    public:
        void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
    };
 
public:
    typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption;
    typedef BlockCipherFinal<DECRYPTION, Dec> Decryption;
};
 
typedef MARS::Encryption MARSEncryption;
typedef MARS::Decryption MARSDecryption;
 
NAMESPACE_END
 
#endif