3des.rar_3des_3des c_3des c++_3des linux c_3des linux c语言

#include <stdio.h> #include <stdlib.h> #include <string.h> static int pc_1_table[56]={57,49,41,33,25,17, 9, 1,58,50,42,34,26,18, 10, 2,59,51,43,35,27, 19,11, 3,60,52,44,36, 63,55,47,39,31,23,15, 7,62,54,46,38,30,22, 14, 6,61,53,45,37,29, 21,13, 5,28,20,12, 4}; static int pc_2_table[48]={14,17,11,24, 1, 5, 3,28,15, 6,21,10, 23,19,12, 4,26, 8, 16, 7,27,20,13, 2, 41,52,31,37,47,55, 30,40,51,45,33,48, 44,49,39,56,34,53, 46,42,50,36,29,32}; static int ls_num_table[16]={1,1,2,2,2,2,2,2,1,2,2,2,2,2,2,1}; static int ip_table[64]={58,50,42,34,26,18,10, 2, 60,52,44,36,28,20,12, 4, 62,54,46,38,30,22,14, 6, 64,56,48,40,32,24,16, 8, 57,49,41,33,25,17, 9, 1, 59,51,43,35,27,19,11, 3, 61,53,45,37,29,21,13, 5, 63,55,47,39,31,23,15, 7}; static int ip_1_table[64]={40, 8,48,16,56,24,64,32, 39, 7,47,15,55,23,63,31, 38, 6,46,14,54,22,62,30, 37, 5,45,13,53,21,61,29, 36, 4,44,12,52,20,60,28, 35, 3,43,11,51,19,59,27, 34, 2,42,10,50,18,58,26, 33, 1,41, 9,49,17,57,25}; static int e_table[48]={32, 1, 2, 3, 4, 5, 4, 5, 6, 7, 8, 9, 8, 9,10,11,12,13, 12,13,14,15,16,17, 16,17,18,19,20,21, 20,21,22,23,24,25, 24,25,26,27,28,29, 28,29,30,31,32, 1}; static int p_table[32]={16, 7,20,21, 29,12,28,17, 1,15,23,26, 5,18,31,10, 2, 8,24,14, 32,27, 3, 9, 19,13,30, 6, 22,11, 4,25}; static int s_box_table[8][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}}, {{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}}, {{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}}, {{ 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}}, {{ 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}}, {{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}}, {{ 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}}, {{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}} }; //功能：实现DES及3DES加解密的算法 //作者：XXX //日期：2008-9-23 //函数声明 int Do_DES(char* strSrc, char* strKey, char* strDest, char flag); int Do_3DES(char* strSrc, char* strKey, char* strDest, char flag); //主函数 int main(int argc, char** argv) { char src16[16+1],key16[16+1],key48[48+1],dest16[16+1]; if(argc != 3) { fprintf(stderr,"Usage: [%s -e|-d s|3]\n",argv[0]); exit(1); } if(strcmp(argv[2],"-s") == 0) { if(strcmp(argv[1],"-e") == 0) { fprintf(stderr,"Please input the string that you want to encrypt(16 hex number):\n"); memset(src16,0,sizeof(src16)); scanf("%s",src16); fprintf(stderr,"Please input the Key string(16 hex number):\n"); memset(key16,0,sizeof(key16)); scanf("%s",key16); memset(dest16,0,sizeof(dest16)); Do_DES(src16,key16,dest16,'e'); fprintf(stderr,"Result: [%s]\n",dest16); } else if(strcmp(argv[1],"-d") == 0) { fprintf(stderr,"Please input the string that you want to decrypt(16 hex number):\n"); memset(src16,0,sizeof(src16)); scanf("%s",src16); fprintf(stderr,"Please input the Key string(16 hex number):\n"); memset(key16,0,sizeof(key16)); scanf("%s",key16); memset(dest16,0,sizeof(dest16)); Do_DES(src16,key16,dest16,'d'); fprintf(stderr,"Result: [%s]\n",dest16); } else return -1; } else if(strcmp(argv[2],"-3") == 0) { if(strcmp(argv[1],"-e") == 0) { fprintf(stderr,"Please input the string that you want to encrypt(16 hex number):\n"); memset(src16,0,sizeof(src16)); scanf("%s",src16); fprintf(stderr,"Please input the Key string(16 hex number):\n"); memset(key48,0,sizeof(key48)); scanf("%s",key48); memset(dest16,0,sizeof(dest16)); Do_3DES(src16,key48,dest16,'e'); fprintf(stderr,"Result: [%s]\n",dest16); } else if(strcmp(argv[1],"-d") == 0) { fprintf(stderr,"Please input the string that you want to decrypt(16 hex number):\n"); memset(src16,0,sizeof(src16)); scanf("%s",src16); fprintf(stderr,"Please input the Key string(16 hex number):\n"); memset(key48,0,sizeof(key48)); scanf("%s",key48); memset(dest16,0,sizeof(dest16)); Do_3DES(src16,key48,dest16,'d'); fprintf(stderr,"Result: [%s]\n",dest16); } else return -1; } else return -1; return 0; } //做DES加密或解密运算 int Do_DES(char* strSrc, char* strKey, char* strDest, char flag) { int i,j; unsigned char subKey[16][48+1],byte8[8+1],bits[64+1],strTmp[64+1]; unsigned char L0[32+1],R0[32+1],Lx[32+1],Rx[32+1]; if(!( flag == 'e' || flag == 'E' || flag == 'd' || flag == 'D')) return -1; if(strSrc == NULL || strKey == NULL) return -2; if(flag == 'e' || flag == 'E') { memset(byte8,0,sizeof(byte8)); BCDToByte(strKey, 16, byte8); memset(bits,0,sizeof(bits)); ByteToBit(byte8, 8, bits); Des_GenSubKey(bits,subKey); BCDToByte(strSrc, 16, byte8); ByteToBit(byte8, 8, bits); Des_IP(bits, strTmp); memcpy(L0,strTmp,32); memcpy(R0,strTmp+32,32);