des.cpp

DES加密算法实现的C++类

	work = (right << 28) | (right >> 4);
	work ^= *keys++;
	fval  = SP7[work         & 0x3fL];
	fval |= SP5[(work >>  8) & 0x3fL];
	fval |= SP3[(work >> 16) & 0x3fL];
	fval |= SP1[(work >> 24) & 0x3fL];
	work = right ^ *keys++;
	fval |= SP8[work         & 0x3fL];
	fval |= SP6[(work >>  8) & 0x3fL];
	fval |= SP4[(work >> 16) & 0x3fL];
	fval |= SP2[(work >> 24) & 0x3fL];
	leftt ^= fval;
	work = (leftt << 28) | (leftt >> 4);
	work ^= *keys++;
	fval  = SP7[work         & 0x3fL];
	fval |= SP5[(work >>  8) & 0x3fL];
	fval |= SP3[(work >> 16) & 0x3fL];
	fval |= SP1[(work >> 24) & 0x3fL];
	work = leftt ^ *keys++;
	fval |= SP8[work         & 0x3fL];
	fval |= SP6[(work >>  8) & 0x3fL];
	fval |= SP4[(work >> 16) & 0x3fL];
    fval |= SP2[(work >> 24) & 0x3fL];
    right ^= fval;
  }
  right = (right << 31) | (right >> 1);
  work = (leftt ^ right) & 0xaaaaaaaaL;
  leftt ^= work;
  right ^= work;
  leftt = (leftt << 31) | ( leftt >> 1);
  work = ((leftt >> 8) ^ right) & 0x00ff00ffL;
  right ^= work;
  leftt ^= (work << 8);
  work = ((leftt >> 2) ^ right) & 0x33333333L;
  right ^= work;
  leftt ^= (work << 2);
  work = ((right >> 16) ^ leftt) & 0x0000ffffL;
  leftt ^= work;
  right ^= (work << 16);
  work = ((right >> 4) ^ leftt) & 0x0f0f0f0fL;
  leftt ^= work;
  right ^= (work << 4);
  *block++ = right;
  *block = leftt;
  return;
}

// -----------------------------------------------------------------------
// Initial of static data members. These data will be used by all the
// instances of class,and can not be changed.
// -----------------------------------------------------------------------
unsigned char DES::Df_Key[24] = {
       0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef,
       0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10,
       0x89, 0xab, 0xcd, 0xef, 0x01, 0x23, 0x45, 0x67 };

unsigned short DES::bytebit[8] = {
       0200, 0100, 040, 020, 010, 04, 02, 01 };

unsigned long DES::bigbyte[24] = {
       0x800000L, 0x400000L, 0x200000L, 0x100000L,
       0x80000L,  0x40000L,  0x20000L,  0x10000L,
       0x8000L,   0x4000L,   0x2000L,   0x1000L,
       0x800L,    0x400L,    0x200L,    0x100L,
       0x80L,     0x40L,     0x20L,     0x10L,
       0x8L,      0x4L,      0x2L,      0x1L        };

unsigned char DES::pc1[56] = {
       56, 48, 40, 32, 24, 16,  8,  0, 57, 49, 41, 33, 25, 17,
        9,  1, 58, 50, 42, 34, 26, 18, 10,  2, 59, 51, 43, 35,
       62, 54, 46, 38, 30, 22, 14,  6, 61, 53, 45, 37, 29, 21,
       13,  5, 60, 52, 44, 36, 28, 20, 12,  4, 27, 19, 11, 3   };

unsigned char DES::totrot[16] = {
       1, 2, 4, 6, 8, 10, 12, 14, 15, 17, 19, 21, 23, 25, 27, 28 };

unsigned char DES::pc2[48] = {
       13, 16, 10, 23,  0,  4,      2, 27, 14,  5, 20,  9,
       22, 18, 11,  3, 25,  7,     15,  6, 26, 19, 12,  1,
       40, 51, 30, 36, 46, 54,     29, 39, 50, 44, 32, 47,
       43, 48, 38, 55, 33, 52,     45, 41, 49, 35, 28, 31   };

unsigned long DES::SP1[64] = {
       0x01010400L, 0x00000000L, 0x00010000L, 0x01010404L,
       0x01010004L, 0x00010404L, 0x00000004L, 0x00010000L,
       0x00000400L, 0x01010400L, 0x01010404L, 0x00000400L,
       0x01000404L, 0x01010004L, 0x01000000L, 0x00000004L,
       0x00000404L, 0x01000400L, 0x01000400L, 0x00010400L,
       0x00010400L, 0x01010000L, 0x01010000L, 0x01000404L,
       0x00010004L, 0x01000004L, 0x01000004L, 0x00010004L,
       0x00000000L, 0x00000404L, 0x00010404L, 0x01000000L,
       0x00010000L, 0x01010404L, 0x00000004L, 0x01010000L,
       0x01010400L, 0x01000000L, 0x01000000L, 0x00000400L,
       0x01010004L, 0x00010000L, 0x00010400L, 0x01000004L,
       0x00000400L, 0x00000004L, 0x01000404L, 0x00010404L,
       0x01010404L, 0x00010004L, 0x01010000L, 0x01000404L,
       0x01000004L, 0x00000404L, 0x00010404L, 0x01010400L,
       0x00000404L, 0x01000400L, 0x01000400L, 0x00000000L,
       0x00010004L, 0x00010400L, 0x00000000L, 0x01010004L  };

unsigned long DES::SP2[64] = {
       0x80108020L, 0x80008000L, 0x00008000L, 0x00108020L,
       0x00100000L, 0x00000020L, 0x80100020L, 0x80008020L,
       0x80000020L, 0x80108020L, 0x80108000L, 0x80000000L,
       0x80008000L, 0x00100000L, 0x00000020L, 0x80100020L,
       0x00108000L, 0x00100020L, 0x80008020L, 0x00000000L,
       0x80000000L, 0x00008000L, 0x00108020L, 0x80100000L,
       0x00100020L, 0x80000020L, 0x00000000L, 0x00108000L,
       0x00008020L, 0x80108000L, 0x80100000L, 0x00008020L,
       0x00000000L, 0x00108020L, 0x80100020L, 0x00100000L,
       0x80008020L, 0x80100000L, 0x80108000L, 0x00008000L,
       0x80100000L, 0x80008000L, 0x00000020L, 0x80108020L,
       0x00108020L, 0x00000020L, 0x00008000L, 0x80000000L,
       0x00008020L, 0x80108000L, 0x00100000L, 0x80000020L,
       0x00100020L, 0x80008020L, 0x80000020L, 0x00100020L,
       0x00108000L, 0x00000000L, 0x80008000L, 0x00008020L,
       0x80000000L, 0x80100020L, 0x80108020L, 0x00108000L  };

unsigned long DES::SP3[64] = {
       0x00000208L, 0x08020200L, 0x00000000L, 0x08020008L,
       0x08000200L, 0x00000000L, 0x00020208L, 0x08000200L,
       0x00020008L, 0x08000008L, 0x08000008L, 0x00020000L,
       0x08020208L, 0x00020008L, 0x08020000L, 0x00000208L,
       0x08000000L, 0x00000008L, 0x08020200L, 0x00000200L,
       0x00020200L, 0x08020000L, 0x08020008L, 0x00020208L,
       0x08000208L, 0x00020200L, 0x00020000L, 0x08000208L,
       0x00000008L, 0x08020208L, 0x00000200L, 0x08000000L,
       0x08020200L, 0x08000000L, 0x00020008L, 0x00000208L,
       0x00020000L, 0x08020200L, 0x08000200L, 0x00000000L,
       0x00000200L, 0x00020008L, 0x08020208L, 0x08000200L,
       0x08000008L, 0x00000200L, 0x00000000L, 0x08020008L,
       0x08000208L, 0x00020000L, 0x08000000L, 0x08020208L,
       0x00000008L, 0x00020208L, 0x00020200L, 0x08000008L,
       0x08020000L, 0x08000208L, 0x00000208L, 0x08020000L,
       0x00020208L, 0x00000008L, 0x08020008L, 0x00020200L  };

unsigned long DES::SP4[64] = {
       0x00802001L, 0x00002081L, 0x00002081L, 0x00000080L,
       0x00802080L, 0x00800081L, 0x00800001L, 0x00002001L,
       0x00000000L, 0x00802000L, 0x00802000L, 0x00802081L,
       0x00000081L, 0x00000000L, 0x00800080L, 0x00800001L,
       0x00000001L, 0x00002000L, 0x00800000L, 0x00802001L,
       0x00000080L, 0x00800000L, 0x00002001L, 0x00002080L,
       0x00800081L, 0x00000001L, 0x00002080L, 0x00800080L,
       0x00002000L, 0x00802080L, 0x00802081L, 0x00000081L,
       0x00800080L, 0x00800001L, 0x00802000L, 0x00802081L,
       0x00000081L, 0x00000000L, 0x00000000L, 0x00802000L,
       0x00002080L, 0x00800080L, 0x00800081L, 0x00000001L,
       0x00802001L, 0x00002081L, 0x00002081L, 0x00000080L,
       0x00802081L, 0x00000081L, 0x00000001L, 0x00002000L,
       0x00800001L, 0x00002001L, 0x00802080L, 0x00800081L,
       0x00002001L, 0x00002080L, 0x00800000L, 0x00802001L,
       0x00000080L, 0x00800000L, 0x00002000L, 0x00802080L  };

unsigned long DES::SP5[64] = {
       0x00000100L, 0x02080100L, 0x02080000L, 0x42000100L,
       0x00080000L, 0x00000100L, 0x40000000L, 0x02080000L,
       0x40080100L, 0x00080000L, 0x02000100L, 0x40080100L,
       0x42000100L, 0x42080000L, 0x00080100L, 0x40000000L,
       0x02000000L, 0x40080000L, 0x40080000L, 0x00000000L,
       0x40000100L, 0x42080100L, 0x42080100L, 0x02000100L,
       0x42080000L, 0x40000100L, 0x00000000L, 0x42000000L,
       0x02080100L, 0x02000000L, 0x42000000L, 0x00080100L,
       0x00080000L, 0x42000100L, 0x00000100L, 0x02000000L,
       0x40000000L, 0x02080000L, 0x42000100L, 0x40080100L,
       0x02000100L, 0x40000000L, 0x42080000L, 0x02080100L,
       0x40080100L, 0x00000100L, 0x02000000L, 0x42080000L,
       0x42080100L, 0x00080100L, 0x42000000L, 0x42080100L,
       0x02080000L, 0x00000000L, 0x40080000L, 0x42000000L,
       0x00080100L, 0x02000100L, 0x40000100L, 0x00080000L,
       0x00000000L, 0x40080000L, 0x02080100L, 0x40000100L  };

unsigned long DES::SP6[64] = {
       0x20000010L, 0x20400000L, 0x00004000L, 0x20404010L,
       0x20400000L, 0x00000010L, 0x20404010L, 0x00400000L,
       0x20004000L, 0x00404010L, 0x00400000L, 0x20000010L,
       0x00400010L, 0x20004000L, 0x20000000L, 0x00004010L,
       0x00000000L, 0x00400010L, 0x20004010L, 0x00004000L,
       0x00404000L, 0x20004010L, 0x00000010L, 0x20400010L,
       0x20400010L, 0x00000000L, 0x00404010L, 0x20404000L,
       0x00004010L, 0x00404000L, 0x20404000L, 0x20000000L,
       0x20004000L, 0x00000010L, 0x20400010L, 0x00404000L,
       0x20404010L, 0x00400000L, 0x00004010L, 0x20000010L,
       0x00400000L, 0x20004000L, 0x20000000L, 0x00004010L,
       0x20000010L, 0x20404010L, 0x00404000L, 0x20400000L,
       0x00404010L, 0x20404000L, 0x00000000L, 0x20400010L,
       0x00000010L, 0x00004000L, 0x20400000L, 0x00404010L,
       0x00004000L, 0x00400010L, 0x20004010L, 0x00000000L,
       0x20404000L, 0x20000000L, 0x00400010L, 0x20004010L  };

unsigned long DES::SP7[64] = {
       0x00200000L, 0x04200002L, 0x04000802L, 0x00000000L,
       0x00000800L, 0x04000802L, 0x00200802L, 0x04200800L,
       0x04200802L, 0x00200000L, 0x00000000L, 0x04000002L,
       0x00000002L, 0x04000000L, 0x04200002L, 0x00000802L,
       0x04000800L, 0x00200802L, 0x00200002L, 0x04000800L,
       0x04000002L, 0x04200000L, 0x04200800L, 0x00200002L,
       0x04200000L, 0x00000800L, 0x00000802L, 0x04200802L,
       0x00200800L, 0x00000002L, 0x04000000L, 0x00200800L,
       0x04000000L, 0x00200800L, 0x00200000L, 0x04000802L,
       0x04000802L, 0x04200002L, 0x04200002L, 0x00000002L,
       0x00200002L, 0x04000000L, 0x04000800L, 0x00200000L,
       0x04200800L, 0x00000802L, 0x00200802L, 0x04200800L,
       0x00000802L, 0x04000002L, 0x04200802L, 0x04200000L,
       0x00200800L, 0x00000000L, 0x00000002L, 0x04200802L,
       0x00000000L, 0x00200802L, 0x04200000L, 0x00000800L,
       0x04000002L, 0x04000800L, 0x00000800L, 0x00200002L  };

unsigned long DES::SP8[64] = {
       0x10001040L, 0x00001000L, 0x00040000L, 0x10041040L,
       0x10000000L, 0x10001040L, 0x00000040L, 0x10000000L,
       0x00040040L, 0x10040000L, 0x10041040L, 0x00041000L,
       0x10041000L, 0x00041040L, 0x00001000L, 0x00000040L,
       0x10040000L, 0x10000040L, 0x10001000L, 0x00001040L,
       0x00041000L, 0x00040040L, 0x10040040L, 0x10041000L,
       0x00001040L, 0x00000000L, 0x00000000L, 0x10040040L,
       0x10000040L, 0x10001000L, 0x00041040L, 0x00040000L,
       0x00041040L, 0x00040000L, 0x10041000L, 0x00001000L,
       0x00000040L, 0x10040040L, 0x00001000L, 0x00041040L,
       0x10001000L, 0x00000040L, 0x10000040L, 0x10040000L,
       0x10040040L, 0x10000000L, 0x00040000L, 0x10001040L,
       0x00000000L, 0x10041040L, 0x00040040L, 0x10000040L,
       0x10040000L, 0x10001000L, 0x10001040L, 0x00000000L,
       0x10041040L, 0x00041000L, 0x00041000L, 0x00001040L,
       0x00001040L, 0x00040040L, 0x10000000L, 0x10041000L  };