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#ifndef CRYPTOPP_SAFER_H
#define CRYPTOPP_SAFER_H
/** \file
*/
#include "seckey.h"
#include "secblock.h"
NAMESPACE_BEGIN(CryptoPP)
/// base class, do not use directly
class SAFER
{
public:
class CRYPTOPP_NO_VTABLE Base : public BlockCipher
{
public:
unsigned int GetAlignment() const {return 1;}
void UncheckedSetKey(CipherDir dir, const byte *userkey, unsigned int length, unsigned nof_rounds);
bool strengthened;
SecByteBlock keySchedule;
static const byte exp_tab[256];
static const byte log_tab[256];
};
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;
};
};
//! _
struct SAFER_K_Info : public FixedBlockSize<8>, public VariableKeyLength<16, 8, 16, 8>, public VariableRounds<10, 1, 13>
{
static const char *StaticAlgorithmName() {return "SAFER-K";}
static unsigned int DefaultRounds(unsigned int keylength) {return keylength == 8 ? 6 : 10;}
};
/// <a href="http://www.weidai.com/scan-mirror/cs.html#SAFER-K">SAFER-K</a>
class SAFER_K : public SAFER_K_Info, public SAFER, public BlockCipherDocumentation
{
class CRYPTOPP_NO_VTABLE Enc : public BlockCipherImpl<SAFER_K_Info, SAFER::Enc>
{
public:
Enc() {strengthened = false;}
};
class CRYPTOPP_NO_VTABLE Dec : public BlockCipherImpl<SAFER_K_Info, SAFER::Dec>
{
public:
Dec() {strengthened = false;}
};
public:
typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption;
typedef BlockCipherFinal<DECRYPTION, Dec> Decryption;
};
//! _
struct SAFER_SK_Info : public FixedBlockSize<8>, public VariableKeyLength<16, 8, 16, 8>, public VariableRounds<10, 1, 13>
{
static const char *StaticAlgorithmName() {return "SAFER-SK";}
static unsigned int DefaultRounds(unsigned int keylength) {return keylength == 8 ? 8 : 10;}
};
/// <a href="http://www.weidai.com/scan-mirror/cs.html#SAFER-SK">SAFER-SK</a>
class SAFER_SK : public SAFER_SK_Info, public SAFER, public BlockCipherDocumentation
{
class CRYPTOPP_NO_VTABLE Enc : public BlockCipherImpl<SAFER_SK_Info, SAFER::Enc>
{
public:
Enc() {strengthened = true;}
};
class CRYPTOPP_NO_VTABLE Dec : public BlockCipherImpl<SAFER_SK_Info, SAFER::Dec>
{
public:
Dec() {strengthened = true;}
};
public:
typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption;
typedef BlockCipherFinal<DECRYPTION, Dec> Decryption;
};
typedef SAFER_K::Encryption SAFER_K_Encryption;
typedef SAFER_K::Decryption SAFER_K_Decryption;
typedef SAFER_SK::Encryption SAFER_SK_Encryption;
typedef SAFER_SK::Decryption SAFER_SK_Decryption;
NAMESPACE_END
#endif
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