只有五天时间来写这个题目,然而我非常菜,已经写不完了,恳求大佬帮助一下!
万分感谢!
2条回答 默认 最新
- 编程介的小学生 2019-10-08 11:08关注
//AES #include <stdio.h> #include <string.h> #include <stdlib.h> #include <conio.h> #include <iostream> using namespace std; /*S盒*/ const unsigned char s[16][16] = { 0x63, 0x7C, 0x77, 0x7B, 0xF2, 0x6B, 0x6F, 0xC5, 0x30, 0x01, 0x67, 0x2B, 0xFE, 0xD7, 0xAB, 0x76, 0xCA, 0x82, 0xC9, 0x7D, 0xFA, 0x59, 0x47, 0xF0, 0xAD, 0xD4, 0xA2, 0xAF, 0x9C, 0xA4, 0x72, 0xC0, 0xB7, 0xFD, 0x93, 0x26, 0x36, 0x3F, 0xF7, 0xCC, 0x34, 0xA5, 0xE5, 0xF1, 0x71, 0xD8, 0x31, 0x15, 0x04, 0xC7, 0x23, 0xC3, 0x18, 0x96, 0x05, 0x9A, 0x07, 0x12, 0x80, 0xE2, 0xEB, 0x27, 0xB2, 0x75, 0x09, 0x83, 0x2C, 0x1A, 0x1B, 0x6E, 0x5A, 0xA0, 0x52, 0x3B, 0xD6, 0xB3, 0x29, 0xE3, 0x2F, 0x84, 0x53, 0xD1, 0x00, 0xED, 0x20, 0xFC, 0xB1, 0x5B, 0x6A, 0xCB, 0xBE, 0x39, 0x4A, 0x4C, 0x58, 0xCF, 0xD0, 0xEF, 0xAA, 0xFB, 0x43, 0x4D, 0x33, 0x85, 0x45, 0xF9, 0x02, 0x7F, 0x50, 0x3C, 0x9F, 0xA8, 0x51, 0xA3, 0x40, 0x8F, 0x92, 0x9D, 0x38, 0xF5, 0xBC, 0xB6, 0xDA, 0x21, 0x10, 0xFF, 0xF3, 0xD2, 0xCD, 0x0C, 0x13, 0xEC, 0x5F, 0x97, 0x44, 0x17, 0xC4, 0xA7, 0x7E, 0x3D, 0x64, 0x5D, 0x19, 0x73, 0x60, 0x81, 0x4F, 0xDC, 0x22, 0x2A, 0x90, 0x88, 0x46, 0xEE, 0xB8, 0x14, 0xDE, 0x5E, 0x0B, 0xDB, 0xE0, 0x32, 0x3A, 0x0A, 0x49, 0x06, 0x24, 0x5C, 0xC2, 0xD3, 0xAC, 0x62, 0x91, 0x95, 0xE4, 0x79, 0xE7, 0xC8, 0x37, 0x6D, 0x8D, 0xD5, 0x4E, 0xA9, 0x6C, 0x56, 0xF4, 0xEA, 0x65, 0x7A, 0xAE, 0x08, 0xBA, 0x78, 0x25, 0x2E, 0x1C, 0xA6, 0xB4, 0xC6, 0xE8, 0xDD, 0x74, 0x1F, 0x4B, 0xBD, 0x8B, 0x8A, 0x70, 0x3E, 0xB5, 0x66, 0x48, 0x03, 0xF6, 0x0E, 0x61, 0x35, 0x57, 0xB9, 0x86, 0xC1, 0x1D, 0x9E, 0xE1, 0xF8, 0x98, 0x11, 0x69, 0xD9, 0x8E, 0x94, 0x9B, 0x1E, 0x87, 0xE9, 0xCE, 0x55, 0x28, 0xDF, 0x8C, 0xA1, 0x89, 0x0D, 0xBF, 0xE6, 0x42, 0x68, 0x41, 0x99, 0x2D, 0x0F, 0xB0, 0x54, 0xBB, 0x16 }; /*逆S盒*/ const unsigned char inv_s[16][16] = { 0x52, 0x09, 0x6A, 0xD5, 0x30, 0x36, 0xA5, 0x38, 0xBF, 0x40, 0xA3, 0x9E, 0x81, 0xF3, 0xD7, 0xFB, 0x7C, 0xE3, 0x39, 0x82, 0x9B, 0x2F, 0xFF, 0x87, 0x34, 0x8E, 0x43, 0x44, 0xC4, 0xDE, 0xE9, 0xCB, 0x54, 0x7B, 0x94, 0x32, 0xA6, 0xC2, 0x23, 0x3D, 0xEE, 0x4C, 0x95, 0x0B, 0x42, 0xFA, 0xC3, 0x4E, 0x08, 0x2E, 0xA1, 0x66, 0x28, 0xD9, 0x24, 0xB2, 0x76, 0x5B, 0xA2, 0x49, 0x6D, 0x8B, 0xD1, 0x25, 0x72, 0xF8, 0xF6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xD4, 0xA4, 0x5C, 0xCC, 0x5D, 0x65, 0xB6, 0x92, 0x6C, 0x70, 0x48, 0x50, 0xFD, 0xED, 0xB9, 0xDA, 0x5E, 0x15, 0x46, 0x57, 0xA7, 0x8D, 0x9D, 0x84, 0x90, 0xD8, 0xAB, 0x00, 0x8C, 0xBC, 0xD3, 0x0A, 0xF7, 0xE4, 0x58, 0x05, 0xB8, 0xB3, 0x45, 0x06, 0xD0, 0x2C, 0x1E, 0x8F, 0xCA, 0x3F, 0x0F, 0x02, 0xC1, 0xAF, 0xBD, 0x03, 0x01, 0x13, 0x8A, 0x6B, 0x3A, 0x91, 0x11, 0x41, 0x4F, 0x67, 0xDC, 0xEA, 0x97, 0xF2, 0xCF, 0xCE, 0xF0, 0xB4, 0xE6, 0x73, 0x96, 0xAC, 0x74, 0x22, 0xE7, 0xAD, 0x35, 0x85, 0xE2, 0xF9, 0x37, 0xE8, 0x1C, 0x75, 0xDF, 0x6E, 0x47, 0xF1, 0x1A, 0x71, 0x1D, 0x29, 0xC5, 0x89, 0x6F, 0xB7, 0x62, 0x0E, 0xAA, 0x18, 0xBE, 0x1B, 0xFC, 0x56, 0x3E, 0x4B, 0xC6, 0xD2, 0x79, 0x20, 0x9A, 0xDB, 0xC0, 0xFE, 0x78, 0xCD, 0x5A, 0xF4, 0x1F, 0xDD, 0xA8, 0x33, 0x88, 0x07, 0xC7, 0x31, 0xB1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xEC, 0x5F, 0x60, 0x51, 0x7F, 0xA9, 0x19, 0xB5, 0x4A, 0x0D, 0x2D, 0xE5, 0x7A, 0x9F, 0x93, 0xC9, 0x9C, 0xEF, 0xA0, 0xE0, 0x3B, 0x4D, 0xAE, 0x2A, 0xF5, 0xB0, 0xC8, 0xEB, 0xBB, 0x3C, 0x83, 0x53, 0x99, 0x61, 0x17, 0x2B, 0x04, 0x7E, 0xBA, 0x77, 0xD6, 0x26, 0xE1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0C, 0x7D }; /*Rcon变换*/ const unsigned char Rcon[11][4] = { 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0x1b, 0x00, 0x00, 0x00, 0x36, 0x00, 0x00, 0x00 }; /*函数声明*/ int SumBytes(FILE *fp);//1 void ByteToBits(unsigned char ch, unsigned char bit[]);//2 void SubBytes(unsigned char status[][4], unsigned char bit[]);//3 void Inv_SubBytes(unsigned char status[][4], unsigned char bit[]);//4 void ShiftRows(unsigned char status[][4]);//5 void Inv_ShiftRows(unsigned char status[][4]);//6 unsigned char ByteMultiply(unsigned char c);//7 void MixColumns(unsigned char status[][4]);//8 void Inv_MixColumns(unsigned char status[][4]);//9 void RotWord(unsigned char c[], unsigned char temp[]);//10 void SubWord( unsigned char temp[], unsigned char bit[]);//11 void KeyExpansion(char *k, unsigned char key[][4], unsigned char bit[]);//12 void RoundKeyChoice(unsigned char key[][4], unsigned char RoundKey[][4], int cnt); //13 void AddRoundKey(unsigned char RoundKey[][4], unsigned char status[][4]);//14 void BytesWrite(FILE *fp, unsigned char status[][4]);//15 void DataEncrypt(char *k, unsigned char key[][4], unsigned char bit[], FILE *fp1, FILE *fp2, unsigned char RoundKey[][4], unsigned char status[][4]); void DataDecrypt(char *k1, unsigned char key[][4], FILE *fp1, FILE *fp2, unsigned char status[][4], unsigned char RoundKey[][4], unsigned char bit[]); /*1、计算被加密文件数据的字节数目*/ int SumBytes(FILE *fp){ int num = 0; char ch = fgetc(fp); while(ch != EOF){ num++; ch = fgetc(fp); } return num; } /*2、字节转换为二进制位存放在数组中*/ void ByteToBits(unsigned char ch, unsigned char bit[]){ for(int i = 0; i < 8; i++) bit[i] = ( ch >> i) & 1; } /*3、S盒变换*/ void SubBytes(unsigned char status[][4], unsigned char bit[]){ for(int i = 0; i < 4; i++) for(int j = 0; j < 4; j++){ ByteToBits(status[i][j], bit); status[i][j] = s[( bit[7] * 8 + bit[6] * 4 + bit[5] * 2 + bit[4] )][( bit[3] * 8 + bit[2] * 4 + bit[1] * 2 + bit[0] )]; } } /*4、逆S盒变换*/ void Inv_SubBytes(unsigned char status[][4], unsigned char bit[]){ for(int i = 0; i < 4; i++) for(int j = 0; j < 4; j++){ ByteToBits(status[i][j], bit); status[i][j] = inv_s[( bit[7] * 8 + bit[6] * 4 + bit[5] * 2 + bit[4] )][( bit[3] * 8 + bit[2] * 4 + bit[1] * 2 + bit[0] )]; } } /*5、行变换*/ void ShiftRows(unsigned char status[][4]){ unsigned char temp1 = status[1][0]; unsigned char temp2 = status[2][0]; unsigned char temp3 = status[2][1]; unsigned char temp4 = status[3][0]; unsigned char temp5 = status[3][1]; unsigned char temp6 = status[3][2]; for(int i = 0; i < 3; i++) status[1][i] = status[1][( i + 1 )]; status[1][3] = temp1; for(int i = 0; i < 2; i++) status[2][i] = status[2][( i + 2 )]; status[2][2] = temp2; status[2][3] = temp3; status[3][0] = status[3][3]; status[3][1] = temp4; status[3][2] = temp5; status[3][3] = temp6; } /*6、逆行变换*/ void Inv_ShiftRows(unsigned char status[][4]){ unsigned char temp1 = status[1][3]; unsigned char temp2 = status[2][2]; unsigned char temp3 = status[2][3]; unsigned char temp4 = status[3][1]; for(int i = 3; i > 0; i--) status[1][i] = status[1][i - 1]; status[1][0] = temp1; for(int i = 3; i > 1; i--) status[2][i] = status[2][i - 2]; status[2][0] = temp2; status[2][1] = temp3; for(int i = 1; i < 4; i++) status[3][i] = status[3][(i + 1) % 4]; status[3][0] = temp4; } /*7、列变换被调用函数x乘法(02乘法)*/ unsigned char ByteMultiply(unsigned char c){ unsigned char temp; temp = c << 1; if(c & 0x80){ temp ^= 0x1b; } return temp; } /*8、列变换*/ void MixColumns(unsigned char status[][4]){ unsigned char temp[4][4]; for(int j=0; j < 4; j++) for(int i=0; i < 4; i++) temp[i][j] = ByteMultiply(status[i % 4][j]) //0x02乘法 ^ ( status[ ( i + 1 ) % 4][j] ^ ByteMultiply( status[ ( i + 1 ) % 4][j] ) ) //0x03乘法 ^ status[ ( i + 2 ) % 4][j] //0x01乘法 ^ status[ ( i + 3 ) % 4][j]; //0x01乘法 for(int i = 0; i < 4; i++) for(int j = 0; j < 4; j++) status[i][j] = temp[i][j]; } /*9、逆列变换*/ void Inv_MixColumns(unsigned char status[][4]){ unsigned char temp[4][4]; for(int j=0; j< 4; j++) for(int i=0; i<4; i++) temp[i][j] = (ByteMultiply(ByteMultiply(ByteMultiply(status[i % 4][j]))) ^ ByteMultiply(ByteMultiply(status[i % 4][j]))^ByteMultiply(status[i % 4][j])) //0x0E乘法 ^ (ByteMultiply(ByteMultiply(ByteMultiply(status[ ( i + 1 ) % 4][j]))) ^ ByteMultiply(status[ ( i + 1 ) % 4][j]) ^ status[ ( i + 1 ) % 4][j]) //0x0B乘法 ^ (ByteMultiply(ByteMultiply(ByteMultiply(status[ ( i + 2 ) % 4][j]))) ^ ByteMultiply(ByteMultiply(status[ ( i + 2 ) % 4][j])) ^ status[ ( i + 2 ) % 4][j]) //0x0D乘法 ^ (ByteMultiply(ByteMultiply(ByteMultiply(status[ ( i + 3 ) % 4][j]))) ^ status[ ( i + 3 ) % 4][j]); //0x09乘法 for(int i = 0; i < 4; i++) for(int j = 0; j < 4; j++) status[i][j] = temp[i][j]; } /*10、位置变换*/ void RotWord(unsigned char c[], unsigned char temp[]){ for(int i = 1; i < 4; i++) temp[i - 1] = c[i]; temp[3] = c[0]; } /*11、小S盒变换*/ void SubWord( unsigned char temp[], unsigned char bit[]){ for(int i = 0; i < 4; i++){ ByteToBits(temp[i],bit); temp[i] = s[( bit[7] * 8 + bit[6] * 4 + bit[5] * 2 + bit[4] )][( bit[3] * 8 + bit[2] * 4 + bit[1] * 2 + bit[0] )]; } } /*12、密钥扩展函数*/ void KeyExpansion(char *k, unsigned char key[][4], unsigned char bit[]){ int i, j; unsigned char temp[4]; for(i = 0; i < 44; i++) for(j = 0; j < 4; j++){ if(i < 4) key[i][j] = *( k + 4 * i + j); else if((i != 0)&&(i % 4 == 0)){ RotWord(key[i - 1], temp); SubWord(temp, bit); key[i][j] = key[i - 4][j] ^ temp[j] ^ Rcon[i/4][j]; } else key[i][j] = key[i - 1][j] ^ key[i - 4][j]; } } /*13、从扩展密钥中选择轮密钥的函数*/ void RoundKeyChoice(unsigned char key[][4], unsigned char RoundKey[][4], int cnt){ int cnt1 = 4 * cnt; for(int i = 0; i < 4; i++){ for(int j = 0; j < 4; j++){ RoundKey[i][j] = key[cnt1][j]; } cnt1++; } } /*14、与扩展密钥的异或运算*/ void AddRoundKey(unsigned char RoundKey[][4], unsigned char status[][4]){ for(int j = 0; j < 4; j++) for(int i = 0; i < 4; i++) status[i][j] = status[i][j] ^ RoundKey[j][i]; } /*15、将状态矩阵中的字节写入文件中函数*/ void BytesWrite(FILE *fp, unsigned char status[][4]){ char ch; for(int i = 0; i < 4; i++) for(int j = 0; j < 4; j++){ ch = status[i][j]; fputc(ch,fp); } } /*16.加密总函数*/ void DataEncrypt(char *k, unsigned char key[][4], unsigned char bit[], FILE *fp1, FILE *fp2, unsigned char RoundKey[][4], unsigned char status[][4]) { int sum, numOfBlock, numOfSurplus; char ch; int len = strlen(k); if(len != 16){ free(k); printf("\n\n输入密钥长度不满足要求!\n"); return; } KeyExpansion(k, key, bit); sum = SumBytes(fp1); fp1 = fopen("源文件.txt", "r"); numOfBlock = sum / 16; numOfSurplus = sum % 16; ch = fgetc(fp1); /*第一种情况*/ if(numOfBlock != 0 && numOfSurplus == 0){ for(int n = 1; n <= numOfBlock; n++){ for(int i = 0; i < 4; i++) for(int j = 0; j < 4; j++){ status[i][j] = ch; ch = fgetc(fp1); }//status赋值 RoundKeyChoice(key, RoundKey, 0); AddRoundKey(RoundKey, status); for(int nr = 1; nr <= 10; nr++){ SubBytes(status, bit); ShiftRows(status); MixColumns(status); RoundKeyChoice(key, RoundKey, nr); AddRoundKey(RoundKey, status); }//10轮加密 SubBytes(status, bit); ShiftRows(status); RoundKeyChoice(key, RoundKey, 4); AddRoundKey(RoundKey, status); BytesWrite(fp2, status); }//Block循环 }//if //第二种情况 else if(numOfBlock == 0 && numOfSurplus != 0){ for(int i = 0; i < 4; i++) for(int j = 0; j < 4; j++){ if( ch == EOF) break; status[i][j] = ch; ch = fgetc(fp1); } for(int i = sum / 4; i < 4; i++) for(int j = sum % 4; j < 4; j++) status[i][j] = 0x00; RoundKeyChoice(key, RoundKey, 0); AddRoundKey(RoundKey, status); for(int nr = 1; nr <= 10; nr++){ SubBytes(status, bit); ShiftRows(status); MixColumns(status); RoundKeyChoice(key, RoundKey, nr); AddRoundKey(RoundKey, status); }//10轮加密 SubBytes(status, bit); ShiftRows(status); RoundKeyChoice(key, RoundKey, 4); AddRoundKey(RoundKey, status); BytesWrite(fp2, status); }//else if //第三种情况 else if(numOfBlock != 0 && numOfSurplus != 0){ for(int n = 1; n <= numOfBlock; n++){ for(int i = 0; i <4; i++) for(int j = 0; j < 4; j++){ status[i][j] = ch; ch = fgetc(fp1); }//status赋值 RoundKeyChoice(key, RoundKey, 0); AddRoundKey(RoundKey, status); for(int nr = 1; nr <= 10; nr++){ SubBytes(status, bit); ShiftRows(status); MixColumns(status); RoundKeyChoice(key, RoundKey, nr); AddRoundKey(RoundKey, status); }//10轮加密 SubBytes(status, bit); ShiftRows(status); RoundKeyChoice(key, RoundKey, 4); AddRoundKey(RoundKey, status); BytesWrite(fp2, status); }//Block循环 for(int i = 0; i < 4; i++) for(int j = 0; j < 4; j++){ if(ch == EOF) break; status[i][j] = ch; ch = fgetc(fp1); } for(int i = sum / 4; i < 4; i++) for(int j = sum % 4; j < 4; j++) status[i][j] = 0x00; RoundKeyChoice(key, RoundKey, 0); AddRoundKey(RoundKey, status); for(int nr = 1; nr <= 10; nr++){ SubBytes(status, bit); ShiftRows(status); MixColumns(status); RoundKeyChoice(key, RoundKey, nr); AddRoundKey(RoundKey, status); }//10轮加密 SubBytes(status, bit); ShiftRows(status); RoundKeyChoice(key, RoundKey, 4); AddRoundKey(RoundKey, status); BytesWrite(fp2, status); }//else free(k); fclose(fp1); fclose(fp2); printf("\n\n加密文件成功!\n\n"); } /*17.解密总函数*/ void DataDecrypt(char *k1, unsigned char key[][4], FILE *fp1, FILE *fp2, unsigned char status[][4], unsigned char RoundKey[][4], unsigned char bit[]) { int numOfBlock, sum; char ch; int len = strlen(k1); if(len != 16){ free(k1); printf("\n\n输入密钥长度不满足要求!\n"); return; } sum = SumBytes(fp1); fp1 = fopen("加密后文件.txt","r"); numOfBlock = sum / 16; ch = fgetc(fp1); for(int i = 1; i <= numOfBlock; i++){ for(int i = 0; i < 4; i++) for(int j = 0; j < 4; j++){ status[i][j] = ch; ch = fgetc(fp1); } RoundKeyChoice(key, RoundKey, 4); AddRoundKey(RoundKey, status); Inv_ShiftRows(status); Inv_SubBytes(status, bit); for(int nr = 10; nr >= 1; nr--){ RoundKeyChoice(key, RoundKey, nr); AddRoundKey(RoundKey, status); Inv_MixColumns(status); Inv_ShiftRows(status); Inv_SubBytes(status, bit); }//10轮解密 RoundKeyChoice(key, RoundKey, 0); AddRoundKey(RoundKey, status); BytesWrite(fp2, status); }//Block free(k1); fclose(fp1); fclose(fp2); printf("\n\n解密文件成功!\n\n"); } main(){ int choice, sum1; int flag = 1; FILE *fp1, *fp2; unsigned char status[4][4] = {0x00}; unsigned char key[44][4] = {0x00}; unsigned char RoundKey[4][4] = {0x00}; unsigned char bit[8] = {0x00}; do{ printf("*****************************AES加密解密文件************************************"); printf("\n"); printf(" 1.加密文件\n\n"); printf(" 2.解密文件\n\n"); printf(" 3.退出\n\n"); printf("\n请选择要进行的操作:"); scanf("%d",&choice); switch(choice){ case 1: fp1 = fopen("源文件.txt","r"); if(fp1 == NULL){ printf("打开源文件失败!\n"); getchar(); exit(0); } fp2 = fopen("加密后文件.txt","w"); if(fp2 == NULL){ printf("打开加密后文件失败!\n"); getchar(); exit(0); } printf("\n请输入加密密钥(128bit):"); char *k = (char *)malloc(20 * sizeof(char)); cin >> k; DataEncrypt(k, key, bit, fp1, fp2, RoundKey, status); break; case 2: fp1 = fopen("加密后文件.txt","r"); if(fp1 == NULL){ printf("\n打开加密后文件失败!\n"); getchar(); exit(0); } fp2 = fopen("解密后文件.txt","w"); if(fp2 == NULL){ printf("\n打开解密后文件失败!\n"); getchar(); exit(0); } printf("\n\n请输入解密密钥(128bit):"); char *k1 = (char *)malloc(20 * sizeof(char)); cin >> k1; DataDecrypt(k1, key, fp1, fp2, status, RoundKey, bit); break; case 3: flag = 0; break; default : printf("\n\n所选操作不合法!\n"); }//switch }while(flag); }
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