des_cipher.h

一个用3DES加密文件的小测试程序！

//#define ID "142725711106681"


#ifndef _DES_PUBLIC_H
#define _DES_PUBLIC_H

#define EN0  0/* MODE== encrypt*/
#define DE1  1/* MODE== decrypt*/
#define MAXKEYSIZE 9
#define MAXTEXTSIZE 9
typedef struct {
        unsigned long ek[32];/*ek store encrypt child keys,ek[0](24bits) ek[1](24bits)store 
		                        key1(48bits)*/
        unsigned long dk[32];/*dk store decrypt child keys*/
} des_ctx;

 extern void des_cipher(register unsigned char * pinText,int nblock,
					   register unsigned char * pkey,short nflag);


extern void deskey(unsigned char *,short);
/*                hexkey[8] MODE
  * Sets the internal key register according to the hexadecimal
  * key contained in the 8 bytes of hexkey,according to the DES,
  * for encryption or decryption according to MODE.
  */
extern void usekey(unsigned long*);
/*                cookedkey[32]
  *Loads the internal key register with the data sn cookedkey.
  */
extern void cpkey(unsigned long*);
/*                cookedkey[32]
  *Copies the contents of the internal key register into the storage
  *located at &cookedkey[0].
  */

static void scrunch(unsigned char *,unsigned long*);/*change the bytes into bits*/
static void unscrun(unsigned long *,unsigned char *);/*change the bits into bytes*/
static void desfunc(unsigned long *,unsigned long*);/**execute the DES algorithm**/
static void cookey(unsigned long *);
static unsigned long KnL[32]={0L};
static unsigned long KnR[32]={0L};
static unsigned long Kn3[32]={0L};
/**static unsigned char 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};**/
static unsigned short bytebit[8]   ={
0200,0100,040,020,010,04,02,01};
static unsigned long 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};
/* Use the key Schedule sPecified in the Standard(ANSI X3.92-1981)*/
static unsigned char 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 };
static unsigned char totrot[16]={
        1,2,4,6,8,10,12,14,15,17,19,21,23,25,27,28};

static unsigned char 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};
		static unsigned  long SP1[64]={                 /***S-box and P-box**/ 
      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 };
static unsigned  long 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};
static unsigned  long 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 };
static unsigned long 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, 0x00000050L,
        0x00802081L, 0x00000081L, 0x00000001L, 0x00002000L,
        0x00800001L, 0x00002001L, 0x00802080L, 0x00800081L,
        0x00002001L, 0x00002080L, 0x00800000L, 0x00802001L,
        0x00000080L, 0x00800000L, 0x00002000L, 0x00802080L};
static unsigned long 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};
static unsigned long 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};
static unsigned long 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 };
static unsigned long 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};


#endif