C语言AES求大佬帮助？
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！
//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);
}
https://download.csdn.net/download/adriano119/7862009
这个是C++呀 密钥也是128bit