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korayakov
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Файл:Документация по криптоалгоритмам / CRYPTO30 / safer
.h#ifndef CRYPTOPP_SAFER_H
#define CRYPTOPP_SAFER_H
#include "cryptlib.h"
#include "misc.h"
NAMESPACE_BEGIN(CryptoPP)
class SAFER : public BlockTransformation
{
public:
enum {BLOCKSIZE=8, MAX_ROUNDS=13};
unsigned int BlockSize() const {return BLOCKSIZE;}
protected:
SAFER(const byte *userkey_1, const byte *userkey_2, unsigned nof_rounds, bool strengthened);
void Encrypt(const byte *inBlock, byte *outBlock) const;
void Decrypt(const byte *inBlock, byte *outBlock) const;
SecByteBlock keySchedule;
static const byte exp_tab[256];
static const byte log_tab[256];
};
class SAFER_K64_Encryption : public SAFER
{
public:
enum {KEYLENGTH=8, ROUNDS=6};
SAFER_K64_Encryption(const byte *userKey, unsigned rounds=ROUNDS)
: SAFER(userKey, userKey, rounds, false) {}
void ProcessBlock(byte * inoutBlock) const
{SAFER::Encrypt(inoutBlock, inoutBlock);}
void ProcessBlock(const byte *inBlock, byte *outBlock) const
{SAFER::Encrypt(inBlock, outBlock);}
};
class SAFER_K64_Decryption : public SAFER
{
public:
enum {KEYLENGTH=8, ROUNDS=6};
SAFER_K64_Decryption(const byte *userKey, unsigned rounds=ROUNDS)
: SAFER(userKey, userKey, rounds, false) {}
void ProcessBlock(byte * inoutBlock) const
{SAFER::Decrypt(inoutBlock, inoutBlock);}
void ProcessBlock(const byte *inBlock, byte *outBlock) const
{SAFER::Decrypt(inBlock, outBlock);}
};
class SAFER_K128_Encryption : public SAFER
{
public:
enum {KEYLENGTH=16, ROUNDS=10};
SAFER_K128_Encryption(const byte *userKey, unsigned rounds=ROUNDS)
: SAFER(userKey, userKey+8, rounds, false) {}
void ProcessBlock(byte * inoutBlock) const
{SAFER::Encrypt(inoutBlock, inoutBlock);}
void ProcessBlock(const byte *inBlock, byte *outBlock) const
{SAFER::Encrypt(inBlock, outBlock);}
};
class SAFER_K128_Decryption : public SAFER
{
public:
enum {KEYLENGTH=16, ROUNDS=10};
SAFER_K128_Decryption(const byte *userKey, unsigned rounds=ROUNDS)
: SAFER(userKey, userKey+8, rounds, false) {}
void ProcessBlock(byte * inoutBlock) const
{SAFER::Decrypt(inoutBlock, inoutBlock);}
void ProcessBlock(const byte *inBlock, byte *outBlock) const
{SAFER::Decrypt(inBlock, outBlock);}
};
class SAFER_SK64_Encryption : public SAFER
{
public:
enum {KEYLENGTH=8, ROUNDS=8};
SAFER_SK64_Encryption(const byte *userKey, unsigned rounds=ROUNDS)
: SAFER(userKey, userKey, rounds, true) {}
void ProcessBlock(byte * inoutBlock) const
{SAFER::Encrypt(inoutBlock, inoutBlock);}
void ProcessBlock(const byte *inBlock, byte *outBlock) const
{SAFER::Encrypt(inBlock, outBlock);}
};
class SAFER_SK64_Decryption : public SAFER
{
public:
enum {KEYLENGTH=8, ROUNDS=8};
SAFER_SK64_Decryption(const byte *userKey, unsigned rounds=ROUNDS)
: SAFER(userKey, userKey, rounds, true) {}
void ProcessBlock(byte * inoutBlock) const
{SAFER::Decrypt(inoutBlock, inoutBlock);}
void ProcessBlock(const byte *inBlock, byte *outBlock) const
{SAFER::Decrypt(inBlock, outBlock);}
};
class SAFER_SK128_Encryption : public SAFER
{
public:
enum {KEYLENGTH=16, ROUNDS=10};
SAFER_SK128_Encryption(const byte *userKey, unsigned rounds=ROUNDS)
: SAFER(userKey, userKey+8, rounds, true) {}
void ProcessBlock(byte * inoutBlock) const
{SAFER::Encrypt(inoutBlock, inoutBlock);}
void ProcessBlock(const byte *inBlock, byte *outBlock) const
{SAFER::Encrypt(inBlock, outBlock);}
};
class SAFER_SK128_Decryption : public SAFER
{
public:
enum {KEYLENGTH=16, ROUNDS=10};
SAFER_SK128_Decryption(const byte *userKey, unsigned rounds=ROUNDS)
: SAFER(userKey, userKey+8, rounds, true) {}
void ProcessBlock(byte * inoutBlock) const
{SAFER::Decrypt(inoutBlock, inoutBlock);}
void ProcessBlock(const byte *inBlock, byte *outBlock) const
{SAFER::Decrypt(inBlock, outBlock);}
};
NAMESPACE_END
#endif
Соседние файлы в папке CRYPTO30