Assassin_GYN 2019-10-08 11:03 采纳率: 50%
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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！
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  • 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);
}

    https://download.csdn.net/download/adriano119/7862009

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