cipherbase.h

RC5/RC6 Base加密/解密源码

#ifndef __CipherBase_H__
#define __CipherBase_H__

#include <limits.h>

#ifdef _BIG_WORDS
  #define MASK32( x )	( ( x ) & 0xFFFFFFFFUL )
#else
  #define MASK32( x )	x
#endif /* _BIG_WORDS */

#if UINT_MAX > 0xFFFFUL
  #define MASK16( x )	( ( x ) & 0xFFFFUL )
#else
  #define MASK16( x )	x
#endif /* > 16-bit ints */

#define mgetBWord(memPtr)		\
		( ( WORD ) memPtr[ 0 ] << 0 ) | ( ( WORD ) memPtr[ 1 ] ); \
		memPtr += 2

#define mputBWord(memPtr,data)	\
		memPtr[ 0 ] = ( BYTE ) ( ( ( data ) >> 8 ) & 0xFF ); \
		memPtr[ 1 ] = ( BYTE ) ( ( data ) & 0xFF ); \
		memPtr += 2

#define mgetBLong(memPtr)		\
		( ( ( LONG ) memPtr[ 0 ] << 24 ) | ( ( LONG ) memPtr[ 1 ] << 16 ) | \
		  ( ( LONG ) memPtr[ 2 ] << 8 ) | ( LONG ) memPtr[ 3 ] ); \
		memPtr += 4

#define mputBLong(memPtr,data)	\
		memPtr[ 0 ] = ( BYTE ) ( ( ( data ) >> 24 ) & 0xFF ); \
		memPtr[ 1 ] = ( BYTE ) ( ( ( data ) >> 16 ) & 0xFF ); \
		memPtr[ 2 ] = ( BYTE ) ( ( ( data ) >> 8 ) & 0xFF ); \
		memPtr[ 3 ] = ( BYTE ) ( ( data ) & 0xFF ); \
		memPtr += 4

#define mgetLWord(memPtr)		\
		( ( WORD ) memPtr[ 0 ] ) | ( ( WORD ) memPtr[ 1 ] << 8 ); \
		memPtr += 2

#define mputLWord(memPtr,data)	\
		memPtr[ 0 ] = ( BYTE ) ( ( data ) & 0xFF ); \
		memPtr[ 1 ] = ( BYTE ) ( ( ( data ) >> 8 ) & 0xFF ); \
		memPtr += 2

#define mgetLLong(memPtr)		\
		( ( ( LONG ) memPtr[ 0 ] ) | ( ( LONG ) memPtr[ 1 ] << 8 ) | \
		  ( ( LONG ) memPtr[ 2 ] << 16 ) | ( ( LONG ) memPtr[ 3 ] << 24 ) ); \
		memPtr += 4

#define mputLLong(memPtr,data)	\
		memPtr[ 0 ] = ( BYTE ) ( ( data ) & 0xFF ); \
		memPtr[ 1 ] = ( BYTE ) ( ( ( data ) >> 8 ) & 0xFF ); \
		memPtr[ 2 ] = ( BYTE ) ( ( ( data ) >> 16 ) & 0xFF ); \
		memPtr[ 3 ] = ( BYTE ) ( ( ( data ) >> 24 ) & 0xFF ); \
		memPtr += 4

class CCipherBase{
public:
		virtual int CipherInitail(DWORD dwParam) = 0;
		virtual int KeyInitial(BYTE *pByte, DWORD nKeySize, DWORD dwParam) = 0;
		virtual int Encrypt(BYTE *pByte, DWORD nBlockSize) = 0;
		virtual int Decrypt(BYTE *pByte, DWORD nBlockSize) = 0;
		virtual int GetBlockSize() = 0;
		virtual int GetKeySize() = 0;
		virtual int GetRounds() = 0;
};

#endif