aes相关资料整理及代码C/C++
2024-05-10 00:51:42
1 aes原理
这里我直接贴人家整理好的链接
AES加密算法的详细介绍与实现
https://blog.csdn.net/qq_28205153/article/details/55798628
AES五种加密模式（CBC、ECB、CTR、OCF、CFB）
https://www.cnblogs.com/starwolf/p/3365834.html
2 《应用密码学 第4版》中aes代码
该代码不属于任何一种加密模式，因为它就加密了16个字符，多一个少一个都不行，而且还输入输出都用的是16进制
//AES.C/*-----------------------------------------------名称：AES算法的C语言实现编译环境：Microsoft Visual Studio 2010/*-----------------------------------------------*/#include <stdio.h>#include <stdlib.h>unsigned char xtime (unsigned char input);void keyexpansion(unsigned char S_BOX[][16], unsigned char keys[][44]);void bytesub(unsigned char S_BOX[][16], unsigned char B[][4]);void shiftrow(unsigned char B[][4]);void mixcolumn(unsigned char input[][4]);void invbytesub(unsigned char N_S_BOX[][16], unsigned char B[][4]);void invshiftrow(unsigned char B[][4]);void invmixcolum(unsigned char input[][4]);int encrypt(unsigned char S_BOX[][16]);int decrypt(unsigned char S_BOX[][16], unsigned char N_S_BOX[][16]);//密钥生成void keyexpansion(unsigned char S_BOX[][16], unsigned char keys[][44]){unsigned char Rcon[11] = {0, 1, 2, 4, 8, 16, 32, 64, 128, 27, 54};unsigned char past[4];register int i, j;printf("Please enter the key:\n");for(i = 0; i <= 3; i ++)for(j = 0; j <= 3; j ++)scanf("%x", &keys[j][i]);for(i = 4; i <= 43; i ++) //make the other 40 keys{if(i % 4 == 0) //如果能被4整除，特殊处理{for(j = 1; j <= 4; j ++) //把前一个密钥移位赋值给数组past[j - 1] = keys[j % 4][i -1];for(j = 0; j <= 3; j ++){if(j == 0)keys[j][i] = S_BOX[past[j] / 16][past[j] % 16] ^ Rcon[i / 4] ^ keys[j][i - 4];elsekeys[j][i] = S_BOX[past[j] / 16][past[j] % 16] ^ keys[j][i - 4];}}else{for(j = 0; j <= 3; j ++){keys[j][i] = keys[j][i - 4] ^ keys[j][i - 1];}}}}//列混淆运算用到的乘2函数unsigned char xtime (unsigned char input) // x乘法('02'乘法){int temp;temp = input << 1;if(input & 0x80){temp ^= 0x1b;}return temp;}//列混淆运算void mixcolumn(unsigned char input[][4]) //列混淆{int i, j;unsigned char output[4][4];for(j = 0; j <= 3; j++)for(i = 0; i <= 3; i++)output[i][j] = xtime(input[i%4][j]) //0x02乘法^ ( input[ ( i + 1 ) % 4][j] ^ xtime( input[ ( i + 1 ) % 4][j] ) ) //0x03乘法^ input[ ( i + 2 ) % 4][j] //0x01乘法^ input[ ( i + 3 ) % 4][j]; //0x01乘法for(i = 0; i <= 3; i ++)for(j = 0; j <= 3; j ++)input[i][j] = output[i][j];}//行移位void shiftrow(unsigned char B[][4]){int i, temp;temp = B[1][0];for(i = 0; i <= 2; i ++)B[1][i] = B[1][i + 1];B[1][3] = temp;for(i = 0; i <= 1; i ++){temp = B[2][i];B[2][i] = B[2][i + 2];B[2][i + 2] = temp;}temp = B[3][3];for(i = 3; i >= 1; i --)B[3][i] = B[3][i - 1];B[3][0] = temp;}//字节变换void bytesub(unsigned char S_BOX[][16], unsigned char B[][4]){register int i, j;for(i = 0; i <= 3; i ++)for(j = 0; j <= 3; j ++)B[i][j] = S_BOX[B[i][j] / 16][B[i][j] % 16];}//逆行移位void invshiftrow(unsigned char B[][4]){int i, temp;temp = B[1][3];for(i = 3; i >= 1; i --)B[1][i] = B[1][i - 1];B[1][0] = temp;for(i = 0; i <= 1; i ++){temp = B[2][i];B[2][i] = B[2][i + 2];B[2][i + 2] = temp;}temp = B[3][0];for(i = 0; i <= 2; i ++)B[3][i] = B[3][i + 1];B[3][3] = temp;}//逆列混淆运算void invmixcolum(unsigned char input[][4]){int i, j;unsigned char output[4][4];for(j = 0; j < 4; j++)for(i = 0; i < 4; i++)output[i][j] = (xtime(xtime(xtime(input[i % 4][j]))) ^ xtime(xtime(input[i % 4][j])) ^ xtime(input[i % 4][j])) //0x0E乘法^ (xtime(xtime(xtime(input[ ( i + 1 ) % 4][j]))) ^ xtime(input[ ( i + 1 ) % 4][j]) ^ input[ ( i + 1 ) % 4][j]) //0x0B乘法^ (xtime(xtime(xtime(input[ ( i + 2 ) % 4][j]))) ^ xtime(xtime(input[ ( i + 2 ) % 4][j])) ^ input[ ( i + 2 ) % 4][j]) //0x0D乘法^ (xtime(xtime(xtime(input[ ( i + 3 ) % 4][j]))) ^ input[ ( i + 3 ) % 4][j]); //0x09乘法for(i = 0; i <= 3; i ++)for(j = 0; j <= 3; j ++)input[i][j] = output[i][j];}//逆字节变换void invbytesub(unsigned char N_S_BOX[][16], unsigned char B[][4]){register int i, j;for(i = 0; i <= 3; i ++)for(j = 0; j <= 3; j ++)B[i][j] = N_S_BOX[B[i][j] / 16][B[i][j] % 16];}int encrypt(unsigned char S_BOX[][16]){unsigned char e, B[4][4];unsigned char keys[4][44];int i, j;int level;printf("Please enter the plaintext:\n");for(i = 0; i <= 3; i ++)for(j = 0; j <= 3; j ++){scanf("%x", &e);B[j][i] = e;}getchar();keyexpansion(S_BOX, keys);for(i = 0; i <= 3; i ++)for(j = 0; j <= 3; j ++){B[i][j] ^= keys[i][j];}for(level = 1; level <= 9; level ++) //1到9轮循环{bytesub(S_BOX, B);shiftrow(B);mixcolumn(B);for(i = 0; i <= 3; i ++)for(j = 0; j <= 3; j ++)B[i][j] ^= keys[i][level * 4 + j];}bytesub(S_BOX, B); //第10轮循环shiftrow(B);for(i = 0; i <= 3; i ++)for(j = 0; j <= 3; j ++)B[i][j] ^= keys[i][40 + j];printf("The ciphertext is：\n");for(i = 0; i <= 3; i ++)for(j = 0; j <= 3; j ++){printf("%02x ", B[j][i]);}putchar('\n');return 0;}int decrypt(unsigned char S_BOX[][16], unsigned char N_S_BOX[][16]){unsigned char B[4][4];unsigned char keys[4][44];int temp, i, j;int level;printf("Please enter the plaintext:\n");for(i = 0; i <= 3; i ++)for(j = 0; j <= 3; j ++){scanf("%x", &temp);B[j][i] = temp;}keyexpansion(S_BOX, keys);for(i = 0; i <= 3; i ++)for(j = 0; j <= 3; j ++)B[i][j] ^= keys[i][j + 40];for(level = 1; level <= 9; level ++){invshiftrow(B);invbytesub(N_S_BOX, B);for(i = 0; i <= 3; i ++)for(j = 0; j <= 3; j ++)B[i][j] ^= keys[i][40 - level * 4 + j];invmixcolum(B);}invshiftrow(B);invbytesub(N_S_BOX, B);for(i = 0; i <= 3; i ++)for(j = 0; j <= 3; j ++)B[i][j] ^= keys[i][j];printf("The output information as:\n");for(i = 0; i <= 3; i ++){for(j = 0; j <= 3; j ++)printf("%02x ", B[j][i]);}putchar('\n');return 0;}int main(){unsigned char S_BOX[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};unsigned char N_S_BOX[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};int choose;printf("This is C implementation of AES:\n");//打印标题loop:printf("\nEncryption please enter: 1\n");printf("Decryption please input: 2\n");printf("Exit please input: 0 \n\n");printf("Please enter your choice:");scanf("%d", &choose);switch(choose){case 1:encrypt(S_BOX);goto loop;case 2:decrypt(S_BOX, N_S_BOX);goto loop;case 0:exit(0);default :exit(0);}return 0;}//Test number//Key//2b 7e 15 16 28 ae d2 a6 ab f7 15 88 09 cf 4f 3c//B//32 43 f6 a8 88 5a 30 8d 31 31 98 a2 e0 37 07 34//C//39 25 84 1d 02 dc 09 fb dc 11 85 97 19 6a 0b 32
3 在以上两个版本基础上，修改的代码
和《应用密码学》自带的版本相比，增加了输入输出数据的位数，从只能加解密16位增加到小于1024的16倍数，明文和解密结果改为字符串输入而不是十六进制数，但是密钥还是十六进制数（因为我懒得改），密文改为乱码形式而不是十六进制并存储在文件中，解密时也从文件中读取密文（我试过不往文件里存，然后发现控制界面能输入的字符比较有限，解密出来的结果不正确），使用ECB模式分组。
#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <cstring>using namespace std;unsigned char xtime (unsigned char input);
void keyexpansion(unsigned char S_BOX[][16], unsigned char keys[][44]);
void bytesub(unsigned char S_BOX[][16], unsigned char B[][4]);
void shiftrow(unsigned char B[][4]);
void mixcolumn(unsigned char input[][4]);
void invbytesub(unsigned char N_S_BOX[][16], unsigned char B[][4]);
void invshiftrow(unsigned char B[][4]);
void invmixcolum(unsigned char input[][4]);
int encrypt(unsigned char S_BOX[][16]);
int decrypt(unsigned char S_BOX[][16], unsigned char N_S_BOX[][16]);static int getIntFromChar(char c);
static void convertArrayToStr(int array[4][4], char* str);
void writeStrToFile(char* str, int len, char* fileName);//把一个字符转变成整型
static int getIntFromChar(char c) {int result = (int)c;return result & 0x000000ff;
}//把4X4数组转回字符串
static void convertArrayToStr(int array[4][4], char* str) {int i, j;for (i = 0; i < 4; i++)for (j = 0; j < 4; j++)*str++ = (char)array[j][i];
}//把字符串写进文件
void writeStrToFile(char* str, int len, char* fileName) {FILE* fp;fp = fopen(fileName, "wb");for (int i = 0; i < len; i++)putc(str[i], fp);fclose(fp);
}//从文件中读取字符串
int readStrFromFile(char* fileName, char* str) {FILE* fp = fopen(fileName, "rb");if (fp == NULL) {printf("打开文件出错，请确认文件存在当前目录下！\n");exit(0);}int i;for (i = 0; i < 1024 && (str[i] = getc(fp)) != EOF; i++);if (i >= 1024) {printf("解密文件过大！\n");exit(0);}str[i] = '\0';fclose(fp);return i;
}//密钥生成
void keyexpansion(unsigned char S_BOX[][16], unsigned char keys[][44]){unsigned char Rcon[11] = {0, 1, 2, 4, 8, 16, 32, 64, 128, 27, 54};unsigned char past[4];register int i, j; printf("Please enter the key:\n");for(i = 0; i <= 3; i ++)for(j = 0; j <= 3; j ++)scanf("%x", &keys[j][i]);for(i = 4; i <= 43; i ++){ //make the other 40 keysif(i % 4 == 0){ //如果能被4整除，特殊处理for(j = 1; j <= 4; j ++) //把前一个密钥移位赋值给数组past[j - 1] = keys[j % 4][i -1];for(j = 0; j <= 3; j ++){if(j == 0)keys[j][i] = S_BOX[past[j] / 16][past[j] % 16] ^ Rcon[i / 4] ^ keys[j][i - 4];elsekeys[j][i] = S_BOX[past[j] / 16][past[j] % 16] ^ keys[j][i - 4];}}else{for(j = 0; j <= 3; j ++){keys[j][i] = keys[j][i - 4] ^ keys[j][i - 1];}}}
}//列混淆运算用到的乘2函数
unsigned char xtime (unsigned char input){ // x乘法('02'乘法)int temp;temp = input << 1;if(input & 0x80){temp ^= 0x1b;}return temp;}//列混淆运算
void mixcolumn(unsigned char input[][4]){ //列混淆int i, j;unsigned char output[4][4];for(j = 0; j <= 3; j++)for(i = 0; i <= 3; i++)output[i][j] = xtime(input[i%4][j]) //0x02乘法^ ( input[ ( i + 1 ) % 4][j] ^ xtime( input[ ( i + 1 ) % 4][j] ) ) //0x03乘法^ input[ ( i + 2 ) % 4][j] //0x01乘法^ input[ ( i + 3 ) % 4][j]; //0x01乘法for(i = 0; i <= 3; i ++)for(j = 0; j <= 3; j ++)input[i][j] = output[i][j];}//行移位void shiftrow(unsigned char B[][4]){int i, temp;temp = B[1][0];for(i = 0; i <= 2; i ++)B[1][i] = B[1][i + 1];B[1][3] = temp;for(i = 0; i <= 1; i ++){temp = B[2][i];B[2][i] = B[2][i + 2];B[2][i + 2] = temp;}temp = B[3][3];for(i = 3; i >= 1; i --)B[3][i] = B[3][i - 1];B[3][0] = temp;}//字节变换
void bytesub(unsigned char S_BOX[][16], unsigned char B[][4]){register int i, j;for(i = 0; i <= 3; i ++)for(j = 0; j <= 3; j ++)B[i][j] = S_BOX[B[i][j] / 16][B[i][j] % 16];}//逆行移位
void invshiftrow(unsigned char B[][4]){int i, temp;temp = B[1][3];for(i = 3; i >= 1; i --)B[1][i] = B[1][i - 1];B[1][0] = temp;for(i = 0; i <= 1; i ++){temp = B[2][i];B[2][i] = B[2][i + 2];B[2][i + 2] = temp;}temp = B[3][0];for(i = 0; i <= 2; i ++)B[3][i] = B[3][i + 1];B[3][3] = temp;}//逆列混淆运算void invmixcolum(unsigned char input[][4]){int i, j;unsigned char output[4][4];for(j = 0; j < 4; j++)for(i = 0; i < 4; i++)output[i][j] = (xtime(xtime(xtime(input[i % 4][j]))) ^ xtime(xtime(input[i % 4][j])) ^ xtime(input[i % 4][j])) //0x0E乘法^ (xtime(xtime(xtime(input[ ( i + 1 ) % 4][j]))) ^ xtime(input[ ( i + 1 ) % 4][j]) ^ input[ ( i + 1 ) % 4][j]) //0x0B乘法^ (xtime(xtime(xtime(input[ ( i + 2 ) % 4][j]))) ^ xtime(xtime(input[ ( i + 2 ) % 4][j])) ^ input[ ( i + 2 ) % 4][j]) //0x0D乘法^ (xtime(xtime(xtime(input[ ( i + 3 ) % 4][j]))) ^ input[ ( i + 3 ) % 4][j]); //0x09乘法for(i = 0; i <= 3; i ++)for(j = 0; j <= 3; j ++)input[i][j] = output[i][j];}//逆字节变换
void invbytesub(unsigned char N_S_BOX[][16], unsigned char B[][4]){register int i, j;for(i = 0; i <= 3; i ++)for(j = 0; j <= 3; j ++)B[i][j] = N_S_BOX[B[i][j] / 16][B[i][j] % 16];}int encrypt(unsigned char S_BOX[][16]){unsigned char e, B[4][4];unsigned char keys[4][44];int i, j;int level;char str[1024],result[1024]; int cArray[4][4];int len, k, l;printf("Please enter the plaintext:\n");//这一段替换掉了原来的直接读入十六位进制数，改为读字符串后转换 scanf("%s", str);getchar();len = strlen(str);if(len % 16 != 0){printf("请输入十六的倍数长度\n");return 0;}keyexpansion(S_BOX, keys);printf("The ciphertext is：\n");k = 0;for(l = 0; l < len; l += 16){k = l;for(i = 0; i <= 3; i ++){for(j = 0; j <= 3; j ++){B[j][i] = getIntFromChar(str[k]);k++;}}for(i = 0; i <= 3; i ++)for(j = 0; j <= 3; j ++){B[i][j] ^= keys[i][j];}for(level = 1; level <= 9; level ++){ //1到9轮循环bytesub(S_BOX, B); //字节代换 shiftrow(B); //行移位 mixcolumn(B); //列混合 //这里似乎又是轮密钥加 for(i = 0; i <= 3; i ++)for(j = 0; j <= 3; j ++)B[i][j] ^= keys[i][level * 4 + j]; }bytesub(S_BOX, B); //第10轮循环shiftrow(B);for(i = 0; i <= 3; i ++)for(j = 0; j <= 3; j ++){ B[i][j] ^= keys[i][40 + j];cArray[i][j] = (int)B[i][j]; } convertArrayToStr(cArray, result+l); }result[len]='\0';
// printf("%s",result);char fileName[64];printf("请输入你想要写进的文件名，比如'test.txt':\n");if (scanf("%s", fileName) == 1) {writeStrToFile(result, len, fileName);printf("已经将密文写进%s中了,可以在运行该程序的当前目录中找到它。\n", fileName);}return 0;
}int decrypt(unsigned char S_BOX[][16], unsigned char N_S_BOX[][16]){unsigned char B[4][4];unsigned char keys[4][44];int temp, i, j;int level;char str[1024];char result[1024];int cArray[4][4];int len, l, k;char fileName[64];printf("请输入要解密的文件名，该文件必须和本程序在同一个目录\n");if (scanf("%s", fileName) == 1){int clen = readStrFromFile(fileName, str);}len = strlen(str);
// printf("len=%d\n",len);keyexpansion(S_BOX, keys);printf("The output information as:\n");for(l = 0; l < len; l +=16){k = l;for(i = 0;i <=3; i ++){for(j = 0; j <=3; j ++){B[j][i] = getIntFromChar(str[k]);k ++;}}for(i = 0; i <= 3; i ++)for(j = 0; j <= 3; j ++)B[i][j] ^= keys[i][j + 40];for(level = 1; level <= 9; level ++){invshiftrow(B);invbytesub(N_S_BOX, B);for(i = 0; i <= 3; i ++)for(j = 0; j <= 3; j ++)B[i][j] ^= keys[i][40 - level * 4 + j];invmixcolum(B);}invshiftrow(B);invbytesub(N_S_BOX, B);for(i = 0; i <= 3; i ++)for(j = 0; j <= 3; j ++){B[i][j] ^= keys[i][j];cArray[i][j] = (int)B[i][j]; }convertArrayToStr(cArray, result+l);}result[len]='\0';printf("%s",result);return 0;}int main()
{unsigned char S_BOX[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};unsigned char N_S_BOX[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};int choose;printf("This is C implementation of AES:\n");//打印标题loop:printf("\nEncryption please enter: 1\n");printf("Decryption please input: 2\n");printf("Exit please input: 0 \n\n");printf("Please enter your choice:");scanf("%d", &choose);switch(choose){case 1:encrypt(S_BOX);goto loop;case 2:decrypt(S_BOX, N_S_BOX);goto loop;case 0:exit(0);default :exit(0);}return 0;}//Test number//Key//2b 7e 15 16 28 ae d2 a6 ab f7 15 88 09 cf 4f 3c// 一个中文占两个字符位置
运行结果
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