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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 ¶ms);
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
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