shacal2.h

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// shacal.h - originally written and placed in the public domain by Wei Dai
 
/// \file shacal2.h
/// \brief Classes for the SHACAL-2 block cipher
/// \since Crypto++ 5.2, Intel SHA since Crypto++ 6.0
 
#ifndef CRYPTOPP_SHACAL2_H
#define CRYPTOPP_SHACAL2_H
 
#include "seckey.h"
#include "secblock.h"
 
NAMESPACE_BEGIN(CryptoPP)
 
/// \brief SHACAL2 block cipher information
struct SHACAL2_Info : public FixedBlockSize<32>, public VariableKeyLength<16, 16, 64>
{
    CRYPTOPP_STATIC_CONSTEXPR const char* StaticAlgorithmName() {return "SHACAL-2";}
};
 
/// \brief SHACAL2 block cipher
/// \since Crypto++ 5.2, Intel SHA since Crypto++ 6.0
/// \sa <a href="http://www.cryptopp.com/wiki/SHACAL-2">SHACAL-2</a>
class SHACAL2 : public SHACAL2_Info, public BlockCipherDocumentation
{
    /// \brief SHACAL2 block cipher transformation functions
    /// \details Provides implementation common to encryption and decryption
    class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<SHACAL2_Info>
    {
    public:
        std::string AlgorithmProvider() const;
        void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs &params);
 
    protected:
        FixedSizeAlignedSecBlock<word32, 64> m_key;
 
        static const word32 K[64];
    };
 
    /// \brief SHACAL2 block cipher transformation functions
    /// \details Encryption transformation
    class CRYPTOPP_NO_VTABLE Enc : public Base
    {
    public:
        void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
    };
 
    /// \brief SHACAL2 block cipher transformation functions
    /// \details Decryption transformation
    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 SHACAL2::Encryption SHACAL2Encryption;
typedef SHACAL2::Decryption SHACAL2Decryption;
 
NAMESPACE_END
 
#endif