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分类: C/C++

2009-10-08 17:28:12

/*
;************************************************************************************************************
;*
;*                                   http://blog.chinaunix.net/u3/104083/
;*                                     
;*--------------------------------------------- 文件信息 ----------------------------------------------------                                     
;*
;* 文件名称 : 3DES.c (PSAM卡)
;* 文件功能 : 应用程序
;* 补充说明 :
;*-------------------------------------------- 最新版本信息 -------------------------------------------------
;* 修改作者 : JackArm
;* 修改日期 : 2009/10/07
;* 版本声明 : V1.2.2
;*-----------------------------------------------------------------------------------------------------------
;*-----------------------------------------------------------------------------------------------------------
;************************************************************************************************************
*/
#include
#include
unsigned char Date[8] = {0x20,0x00,0x08,0x17,0x00,0x00,0x00,0x01};
unsigned char Key[16] = {0x66,0x66,0x66,0x66,0x66,0x66,0x66,0x66,0x66,0x66,0x66,0x66,0x66,0x66,0x66,0x66};
/* ================================================================
des()
Description: DES algorithm,do encript or descript.
================================================================ */
int des(unsigned char *source,unsigned char * dest,unsigned char * inkey, int flg)
{
 unsigned char bufout[64],
 kwork[56], worka[48], kn[48], buffer[64], key[64],
 nbrofshift, temp1, temp2;
 int valindex;
 unsigned char i, j, k, iter;
 /* INITIALIZE THE TABLES */
 /* Table - s1 */
 unsigned char  s1[4][16] = {
  14, 4, 13, 1, 2, 15, 11, 8, 3, 10, 6, 12, 5, 9, 0, 7,
  0, 15, 7, 4, 14, 2, 13, 1, 10, 6, 12, 11, 9, 5, 3, 8,
  4, 1, 14, 8, 13, 6, 2, 11, 15, 12, 9, 7, 3, 10, 5, 0,
  15, 12, 8, 2, 4, 9, 1, 7, 5, 11, 3, 14, 10, 0, 6, 13 };
 /* Table - s2 */
 unsigned char  s2[4][16] = {
  15, 1, 8, 14, 6, 11, 3, 4, 9, 7, 2, 13, 12, 0, 5, 10,
  3, 13, 4, 7, 15, 2, 8, 14, 12, 0, 1, 10, 6, 9, 11, 5,
  0, 14, 7, 11, 10, 4, 13, 1, 5, 8, 12, 6, 9, 3, 2, 15,
  13, 8, 10, 1, 3, 15, 4, 2, 11, 6, 7, 12, 0, 5, 14, 9 };
 /* Table - s3 */
 unsigned char  s3[4][16] = {
  10, 0, 9, 14, 6, 3, 15, 5, 1, 13, 12, 7, 11, 4, 2, 8,
  13, 7, 0, 9, 3, 4, 6, 10, 2, 8, 5, 14, 12, 11, 15, 1,
  13, 6, 4, 9, 8, 15, 3, 0, 11, 1, 2, 12, 5, 10, 14, 7,
  1, 10, 13, 0, 6, 9, 8, 7, 4, 15, 14, 3, 11, 5, 2, 12 };
 /* Table - s4 */
 unsigned char  s4[4][16] = {
  7, 13, 14, 3, 0, 6, 9, 10, 1, 2, 8, 5, 11, 12, 4, 15,
  13, 8, 11, 5, 6, 15, 0, 3, 4, 7, 2, 12, 1, 10, 14, 9,
  10, 6, 9, 0, 12, 11, 7, 13, 15, 1, 3, 14, 5, 2, 8, 4,
  3, 15, 0, 6, 10, 1, 13, 8, 9, 4, 5, 11, 12, 7, 2, 14 };
 /* Table - s5 */
 unsigned char  s5[4][16] = {
  2, 12, 4, 1, 7, 10, 11, 6, 8, 5, 3, 15, 13, 0, 14, 9,
  14, 11, 2, 12, 4, 7, 13, 1, 5, 0, 15, 10, 3, 9, 8, 6,
  4, 2, 1, 11, 10, 13, 7, 8, 15, 9, 12, 5, 6, 3, 0, 14,
  11, 8, 12, 7, 1, 14, 2, 13, 6, 15, 0, 9, 10, 4, 5, 3 };
 /* Table - s6 */
 unsigned char  s6[4][16] = {
  12, 1, 10, 15, 9, 2, 6, 8, 0, 13, 3, 4, 14, 7, 5, 11,
  10, 15, 4, 2, 7, 12, 9, 5, 6, 1, 13, 14, 0, 11, 3, 8,
  9, 14, 15, 5, 2, 8, 12, 3, 7, 0, 4, 10, 1, 13, 11, 6,
  4, 3, 2, 12, 9, 5, 15, 10, 11, 14, 1, 7, 6, 0, 8, 13 };
 /* Table - s7 */
 unsigned char  s7[4][16] = {
  4, 11, 2, 14, 15, 0, 8, 13, 3, 12, 9, 7, 5, 10, 6, 1,
  13, 0, 11, 7, 4, 9, 1, 10, 14, 3, 5, 12, 2, 15, 8, 6,
  1, 4, 11, 13, 12, 3, 7, 14, 10, 15, 6, 8, 0, 5, 9, 2,
  6, 11, 13, 8, 1, 4, 10, 7, 9, 5, 0, 15, 14, 2, 3, 12 };
 /* Table - s8 */
 unsigned char  s8[4][16] = {
  13, 2, 8, 4, 6, 15, 11, 1, 10, 9, 3, 14, 5, 0, 12, 7,
  1, 15, 13, 8, 10, 3, 7, 4, 12, 5, 6, 11, 0, 14, 9, 2,
  7, 11, 4, 1, 9, 12, 14, 2, 0, 6, 10, 13, 15, 3, 5, 8,
  2, 1, 14, 7, 4, 10, 8, 13, 15, 12, 9, 0, 3, 5, 6, 11 };
 /* Table - Shift */
 unsigned char  shift[16] = {
  1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1 };
 /* Table - Binary */
 unsigned char  binary[64] = {
  0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 1, 1,
  0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 1, 0, 0, 1, 1, 1,
  1, 0, 0, 0, 1, 0, 0, 1, 1, 0, 1, 0, 1, 0, 1, 1,
  1, 1, 0, 0, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1 };
 /* MAIN PROCESS */
 /* Convert from 64-bit key into 64-byte key */
 for (i = 0; i < 8; i++) {
  key[8*i] = ((j = *(inkey + i)) / 128) % 2;
  key[8*i+1] = (j / 64) % 2;
  key[8*i+2] = (j / 32) % 2;
  key[8*i+3] = (j / 16) % 2;
  key[8*i+4] = (j / 8) % 2;
  key[8*i+5] = (j / 4) % 2;
  key[8*i+6] = (j / 2) % 2;
  key[8*i+7] = j % 2;
 }
 /* Convert from 64-bit data into 64-byte data */
 for (i = 0; i < 8; i++) {
  buffer[8*i] = ((j = *(source + i)) / 128) % 2;
  buffer[8*i+1] = (j / 64) % 2;
  buffer[8*i+2] = (j / 32) % 2;
  buffer[8*i+3] = (j / 16) % 2;
  buffer[8*i+4] = (j / 8) % 2;
  buffer[8*i+5] = (j / 4) % 2;
  buffer[8*i+6] = (j / 2) % 2;
  buffer[8*i+7] = j % 2;
 }
 /* Initial Permutation of Data */
 bufout[ 0] = buffer[57];
 bufout[ 1] = buffer[49];
 bufout[ 2] = buffer[41];
 bufout[ 3] = buffer[33];
 bufout[ 4] = buffer[25];
 bufout[ 5] = buffer[17];
 bufout[ 6] = buffer[ 9];
 bufout[ 7] = buffer[ 1];
 bufout[ 8] = buffer[59];
 bufout[ 9] = buffer[51];
 bufout[10] = buffer[43];
 bufout[11] = buffer[35];
 bufout[12] = buffer[27];
 bufout[13] = buffer[19];
 bufout[14] = buffer[11];
 bufout[15] = buffer[ 3];
 bufout[16] = buffer[61];
 bufout[17] = buffer[53];
 bufout[18] = buffer[45];
 bufout[19] = buffer[37];
 bufout[20] = buffer[29];
 bufout[21] = buffer[21];
 bufout[22] = buffer[13];
 bufout[23] = buffer[ 5];
 bufout[24] = buffer[63];
 bufout[25] = buffer[55];
 bufout[26] = buffer[47];
 bufout[27] = buffer[39];
 bufout[28] = buffer[31];
 bufout[29] = buffer[23];
 bufout[30] = buffer[15];
 bufout[31] = buffer[ 7];
 bufout[32] = buffer[56];
 bufout[33] = buffer[48];
 bufout[34] = buffer[40];
 bufout[35] = buffer[32];
 bufout[36] = buffer[24];
 bufout[37] = buffer[16];
 bufout[38] = buffer[ 8];
 bufout[39] = buffer[ 0];
 bufout[40] = buffer[58];
 bufout[41] = buffer[50];
 bufout[42] = buffer[42];
 bufout[43] = buffer[34];
 bufout[44] = buffer[26];
 bufout[45] = buffer[18];
 bufout[46] = buffer[10];
 bufout[47] = buffer[ 2];
 bufout[48] = buffer[60];
 bufout[49] = buffer[52];
 bufout[50] = buffer[44];
 bufout[51] = buffer[36];
 bufout[52] = buffer[28];
 bufout[53] = buffer[20];
 bufout[54] = buffer[12];
 bufout[55] = buffer[ 4];
 bufout[56] = buffer[62];
 bufout[57] = buffer[54];
 bufout[58] = buffer[46];
 bufout[59] = buffer[38];
 bufout[60] = buffer[30];
 bufout[61] = buffer[22];
 bufout[62] = buffer[14];
 bufout[63] = buffer[ 6];
 /* Initial Permutation of Key */
 kwork[ 0] = key[56];
 kwork[ 1] = key[48];
 kwork[ 2] = key[40];
 kwork[ 3] = key[32];
 kwork[ 4] = key[24];
 kwork[ 5] = key[16];
 kwork[ 6] = key[ 8];
 kwork[ 7] = key[ 0];
 kwork[ 8] = key[57];
 kwork[ 9] = key[49];
 kwork[10] = key[41];
 kwork[11] = key[33];
 kwork[12] = key[25];
 kwork[13] = key[17];
 kwork[14] = key[ 9];
 kwork[15] = key[ 1];
 kwork[16] = key[58];
 kwork[17] = key[50];
 kwork[18] = key[42];
 kwork[19] = key[34];
 kwork[20] = key[26];
 kwork[21] = key[18];
 kwork[22] = key[10];
 kwork[23] = key[ 2];
 kwork[24] = key[59];
 kwork[25] = key[51];
 kwork[26] = key[43];
 kwork[27] = key[35];
 kwork[28] = key[62];
 kwork[29] = key[54];
 kwork[30] = key[46];
 kwork[31] = key[38];
 kwork[32] = key[30];
 kwork[33] = key[22];
 kwork[34] = key[14];
 kwork[35] = key[ 6];
 kwork[36] = key[61];
 kwork[37] = key[53];
 kwork[38] = key[45];
 kwork[39] = key[37];
 kwork[40] = key[29];
 kwork[41] = key[21];
 kwork[42] = key[13];
 kwork[43] = key[ 5];
 kwork[44] = key[60];
 kwork[45] = key[52];
 kwork[46] = key[44];
 kwork[47] = key[36];
 kwork[48] = key[28];
 kwork[49] = key[20];
 kwork[50] = key[12];
 kwork[51] = key[ 4];
 kwork[52] = key[27];
 kwork[53] = key[19];
 kwork[54] = key[11];
 kwork[55] = key[ 3];
 /* 16 Iterations */
 for (iter = 1; iter < 17; iter++) {
  for (i = 0; i < 32; i++)
  {
   buffer[i] = bufout[32+i];
  }
  /* Calculation of F(R, K) */
  /* Permute - E */
  worka[ 0] = buffer[31];
  worka[ 1] = buffer[ 0];
  worka[ 2] = buffer[ 1];
  worka[ 3] = buffer[ 2];
  worka[ 4] = buffer[ 3];
  worka[ 5] = buffer[ 4];
  worka[ 6] = buffer[ 3];
  worka[ 7] = buffer[ 4];
  worka[ 8] = buffer[ 5];
  worka[ 9] = buffer[ 6];
  worka[10] = buffer[ 7];
  worka[11] = buffer[ 8];
  worka[12] = buffer[ 7];
  worka[13] = buffer[ 8];
  worka[14] = buffer[ 9];
  worka[15] = buffer[10];
  worka[16] = buffer[11];
  worka[17] = buffer[12];
  worka[18] = buffer[11];
  worka[19] = buffer[12];
  worka[20] = buffer[13];
  worka[21] = buffer[14];
  worka[22] = buffer[15];
  worka[23] = buffer[16];
  worka[24] = buffer[15];
  worka[25] = buffer[16];
  worka[26] = buffer[17];
  worka[27] = buffer[18];
  worka[28] = buffer[19];
  worka[29] = buffer[20];
  worka[30] = buffer[19];
  worka[31] = buffer[20];
  worka[32] = buffer[21];
  worka[33] = buffer[22];
  worka[34] = buffer[23];
  worka[35] = buffer[24];
  worka[36] = buffer[23];
  worka[37] = buffer[24];
  worka[38] = buffer[25];
  worka[39] = buffer[26];
  worka[40] = buffer[27];
  worka[41] = buffer[28];
  worka[42] = buffer[27];
  worka[43] = buffer[28];
  worka[44] = buffer[29];
  worka[45] = buffer[30];
  worka[46] = buffer[31];
  worka[47] = buffer[ 0];
  /* KS Function Begin */
  if (flg) {
   nbrofshift = shift[iter-1];
   for (i = 0; i < (int) nbrofshift; i++) {
    temp1 = kwork[0];
    temp2 = kwork[28];
    for (j = 0; j < 27; j++) {
     kwork[j] = kwork[j+1];
     kwork[j+28] = kwork[j+29];
    }
    kwork[27] = temp1;
    kwork[55] = temp2;
   }
  } else if (iter > 1) {
   nbrofshift = shift[17-iter];
   for (i = 0; i < (int) nbrofshift; i++) {
    temp1 = kwork[27];
    temp2 = kwork[55];
    for (j = 27; j > 0; j--) {
     kwork[j] = kwork[j-1];
     kwork[j+28] = kwork[j+27];
    }
    kwork[0] = temp1;
    kwork[28] = temp2;
   }
  }
  /* Permute kwork - PC2 */
  kn[ 0] = kwork[13];
  kn[ 1] = kwork[16];
  kn[ 2] = kwork[10];
  kn[ 3] = kwork[23];
  kn[ 4] = kwork[ 0];
  kn[ 5] = kwork[ 4];
  kn[ 6] = kwork[ 2];
  kn[ 7] = kwork[27];
  kn[ 8] = kwork[14];
  kn[ 9] = kwork[ 5];
  kn[10] = kwork[20];
  kn[11] = kwork[ 9];
  kn[12] = kwork[22];
  kn[13] = kwork[18];
  kn[14] = kwork[11];
  kn[15] = kwork[ 3];
  kn[16] = kwork[25];
  kn[17] = kwork[ 7];
  kn[18] = kwork[15];
  kn[19] = kwork[ 6];
  kn[20] = kwork[26];
  kn[21] = kwork[19];
  kn[22] = kwork[12];
  kn[23] = kwork[ 1];
  kn[24] = kwork[40];
  kn[25] = kwork[51];
  kn[26] = kwork[30];
  kn[27] = kwork[36];
  kn[28] = kwork[46];
  kn[29] = kwork[54];
  kn[30] = kwork[29];
  kn[31] = kwork[39];
  kn[32] = kwork[50];
  kn[33] = kwork[44];
  kn[34] = kwork[32];
  kn[35] = kwork[47];
  kn[36] = kwork[43];
  kn[37] = kwork[48];
  kn[38] = kwork[38];
  kn[39] = kwork[55];
  kn[40] = kwork[33];
  kn[41] = kwork[52];
  kn[42] = kwork[45];
  kn[43] = kwork[41];
  kn[44] = kwork[49];
  kn[45] = kwork[35];
  kn[46] = kwork[28];
  kn[47] = kwork[31];
  /* KS Function End */
  /* worka XOR kn */
  for (i = 0; i < 48; i++)
  worka[i] = worka[i] ^ kn[i];
  /* 8 s-functions */
  valindex = s1[2*worka[ 0]+worka[ 5]]
  [2*(2*(2*worka[ 1]+worka[ 2])+
  worka[ 3])+worka[ 4]];
  valindex = valindex * 4;
  kn[ 0] = binary[0+valindex];
  kn[ 1] = binary[1+valindex];
  kn[ 2] = binary[2+valindex];
  kn[ 3] = binary[3+valindex];
  valindex = s2[2*worka[ 6]+worka[11]]
  [2*(2*(2*worka[ 7]+worka[ 8])+
  worka[ 9])+worka[10]];
  valindex = valindex * 4;
  kn[ 4] = binary[0+valindex];
  kn[ 5] = binary[1+valindex];
  kn[ 6] = binary[2+valindex];
  kn[ 7] = binary[3+valindex];
  valindex = s3[2*worka[12]+worka[17]]
  [2*(2*(2*worka[13]+worka[14])+
  worka[15])+worka[16]];
  valindex = valindex * 4;
  kn[ 8] = binary[0+valindex];
  kn[ 9] = binary[1+valindex];
  kn[10] = binary[2+valindex];
  kn[11] = binary[3+valindex];
  valindex = s4[2*worka[18]+worka[23]]
  [2*(2*(2*worka[19]+worka[20])+
  worka[21])+worka[22]];
  valindex = valindex * 4;
  kn[12] = binary[0+valindex];
  kn[13] = binary[1+valindex];
  kn[14] = binary[2+valindex];
  kn[15] = binary[3+valindex];
  valindex = s5[2*worka[24]+worka[29]]
  [2*(2*(2*worka[25]+worka[26])+
  worka[27])+worka[28]];
  valindex = valindex * 4;
  kn[16] = binary[0+valindex];
  kn[17] = binary[1+valindex];
  kn[18] = binary[2+valindex];
  kn[19] = binary[3+valindex];
  valindex = s6[2*worka[30]+worka[35]]
  [2*(2*(2*worka[31]+worka[32])+
  worka[33])+worka[34]];
  valindex = valindex * 4;
  kn[20] = binary[0+valindex];
  kn[21] = binary[1+valindex];
  kn[22] = binary[2+valindex];
  kn[23] = binary[3+valindex];
  valindex = s7[2*worka[36]+worka[41]]
  [2*(2*(2*worka[37]+worka[38])+
  worka[39])+worka[40]];
  valindex = valindex * 4;
  kn[24] = binary[0+valindex];
  kn[25] = binary[1+valindex];
  kn[26] = binary[2+valindex];
  kn[27] = binary[3+valindex];
  valindex = s8[2*worka[42]+worka[47]]
  [2*(2*(2*worka[43]+worka[44])+
  worka[45])+worka[46]];
  valindex = valindex * 4;
  kn[28] = binary[0+valindex];
  kn[29] = binary[1+valindex];
  kn[30] = binary[2+valindex];
  kn[31] = binary[3+valindex];
  /* Permute - P */
  worka[ 0] = kn[15];
  worka[ 1] = kn[ 6];
  worka[ 2] = kn[19];
  worka[ 3] = kn[20];
  worka[ 4] = kn[28];
  worka[ 5] = kn[11];
  worka[ 6] = kn[27];
  worka[ 7] = kn[16];
  worka[ 8] = kn[ 0];
  worka[ 9] = kn[14];
  worka[10] = kn[22];
  worka[11] = kn[25];
  worka[12] = kn[ 4];
  worka[13] = kn[17];
  worka[14] = kn[30];
  worka[15] = kn[ 9];
  worka[16] = kn[ 1];
  worka[17] = kn[ 7];
  worka[18] = kn[23];
  worka[19] = kn[13];
  worka[20] = kn[31];
  worka[21] = kn[26];
  worka[22] = kn[ 2];
  worka[23] = kn[ 8];
  worka[24] = kn[18];
  worka[25] = kn[12];
  worka[26] = kn[29];
  worka[27] = kn[ 5];
  worka[28] = kn[21];
  worka[29] = kn[10];
  worka[30] = kn[ 3];
  worka[31] = kn[24];
  /* bufout XOR worka */
  for (i = 0; i < 32; i++) {
   bufout[i+32] = bufout[i] ^ worka[i];
   bufout[i] = buffer[i];
  }
 } /* End of Iter */
 /* Prepare Output */
 for (i = 0; i < 32; i++) {
  j = bufout[i];
  bufout[i] = bufout[32+i];
  bufout[32+i] = j;
 }
 /* Inverse Initial Permutation */
 buffer[ 0] = bufout[39];
 buffer[ 1] = bufout[ 7];
 buffer[ 2] = bufout[47];
 buffer[ 3] = bufout[15];
 buffer[ 4] = bufout[55];
 buffer[ 5] = bufout[23];
 buffer[ 6] = bufout[63];
 buffer[ 7] = bufout[31];
 buffer[ 8] = bufout[38];
 buffer[ 9] = bufout[ 6];
 buffer[10] = bufout[46];
 buffer[11] = bufout[14];
 buffer[12] = bufout[54];
 buffer[13] = bufout[22];
 buffer[14] = bufout[62];
 buffer[15] = bufout[30];
 buffer[16] = bufout[37];
 buffer[17] = bufout[ 5];
 buffer[18] = bufout[45];
 buffer[19] = bufout[13];
 buffer[20] = bufout[53];
 buffer[21] = bufout[21];
 buffer[22] = bufout[61];
 buffer[23] = bufout[29];
 buffer[24] = bufout[36];
 buffer[25] = bufout[ 4];
 buffer[26] = bufout[44];
 buffer[27] = bufout[12];
 buffer[28] = bufout[52];
 buffer[29] = bufout[20];
 buffer[30] = bufout[60];
 buffer[31] = bufout[28];
 buffer[32] = bufout[35];
 buffer[33] = bufout[ 3];
 buffer[34] = bufout[43];
 buffer[35] = bufout[11];
 buffer[36] = bufout[51];
 buffer[37] = bufout[19];
 buffer[38] = bufout[59];
 buffer[39] = bufout[27];
 buffer[40] = bufout[34];
 buffer[41] = bufout[ 2];
 buffer[42] = bufout[42];
 buffer[43] = bufout[10];
 buffer[44] = bufout[50];
 buffer[45] = bufout[18];
 buffer[46] = bufout[58];
 buffer[47] = bufout[26];
 buffer[48] = bufout[33];
 buffer[49] = bufout[ 1];
 buffer[50] = bufout[41];
 buffer[51] = bufout[ 9];
 buffer[52] = bufout[49];
 buffer[53] = bufout[17];
 buffer[54] = bufout[57];
 buffer[55] = bufout[25];
 buffer[56] = bufout[32];
 buffer[57] = bufout[ 0];
 buffer[58] = bufout[40];
 buffer[59] = bufout[ 8];
 buffer[60] = bufout[48];
 buffer[61] = bufout[16];
 buffer[62] = bufout[56];
 buffer[63] = bufout[24];
 j = 0;
 for (i = 0; i < 8; i++) {
  *(dest + i) = 0x00;
  for (k = 0; k < 7; k++)
  *(dest + i) = ((*(dest + i)) + buffer[j+k]) * 2;
  *(dest + i) = *(dest + i) + buffer[j+7];
  j += 8;
 }
 return 0;
}
/*
*************************************************************************************************************
- 函数名称 : void ThreeDES(unsigned char *DoubleKeyStr,unsigned char *Data,unsigned char *Out)
- 函数说明 : 3DES算法函数
- 输入参数 :
-           DoubleKeyStr: 16BYTE的加密密钥
-           Data:          8BYTE的明文数据
-           Out :          8BYTE的加密结果
- 输出参数 : 无
*************************************************************************************************************
*/
void ThreeDES(unsigned char *DoubleKeyStr,unsigned char *Data,unsigned char *Out)//3DES算法
{
 unsigned char Buf1[8],Buf2[8];
      des(Data,Buf1,DoubleKeyStr,1);
      des(Buf1,Buf2,DoubleKeyStr+8,0);
      des(Buf2,Out ,DoubleKeyStr,1);
}
/*
*************************************************************************************************************
- 函数名称 : void Diversify(unsigned char *DoubleKeyStr,unsigned char *Data,unsigned char *Out)
- 函数说明 : 分散子密钥的函数
- 输入参数 :
-           DoubleKeyStr: 16BYTE的加密密钥
-           Data:          8BYTE的明文数据
-           Out :         16BYTE的子密钥结果
- 输出参数 : 无
*************************************************************************************************************
*/
void Diversify(unsigned char *DoubleKeyStr,unsigned char *Data,unsigned char *Out)//分散子密钥函数
{
 unsigned char Buf1[8],Buf2[8],t,Zero[8];
   for(t = 0;t<8;t++)Zero[t] = ~Data[t];
      des(Data,Buf1,DoubleKeyStr,1);
      des(Buf1,Buf2,DoubleKeyStr+8,0);
      des(Buf2,Out ,DoubleKeyStr,1);
      des(Zero,Buf1,DoubleKeyStr,1);
      des(Buf1,Buf2,DoubleKeyStr+8,0);
      des(Buf2,Out+8 ,DoubleKeyStr,1);
}
/*
*************************************************************************************************************
- 函数名称 : void IncMacTwo(unsigned char *Value,unsigned char Type,unsigned char *Deviver,unsigned char *Time,unsigned char *Key)
- 函数说明 : 圈存计算MAC2
- 输入参数 :
-           Value   : 4BYTE交易金额
-           TYPE    : 1BYTE交易类型
-           Deviver : 6BYTE终端机号
-           Time    : 7BYTE交易时间(例:20090930165330)
- 输出参数 : 无
*************************************************************************************************************
*/
void IncMacTwo(unsigned char *Value,unsigned char Type,unsigned char *Deviver,unsigned char *Time,unsigned char *Key)
{
 unsigned char Mac2[25],InitData[8],Buf[8],i,j;
 memset(Mac2,0,sizeof(Mac2));
 memcpy(Mac2,Value,4);
 Mac2[4] = Type;
 memcpy(Mac2+5,Deviver,6);
    memcpy(Mac2+11,Time,7);
 Mac2[18] = 0x80;
 memset(InitData,0,sizeof(InitData));
 for(i =0; i< 3; i++)
 {
  memcpy(Buf,Mac2 + i*8,8);
  for(j = 0; j<8; j++)
  {
   Buf[j] ^=  InitData[j];
  }
  des(Buf,InitData,Key,1);
 }
    for(i = 0; i < 8; i++)printf("%02x",InitData[i]);
}
int main(void)
{
 int i,a=1,b =2,c=3;
 //i = (++a) + (++a) + (++a)+ (++a);
   //    (a)+(a)+(a)+(4)
 i = a+++b+++c;
 printf("http://blog.chinaunix.net/u3/104083/  i = %d\n", i);
 getchar();
 return 0;
}
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