请教 tiny aes256 编码后，数据长度问题！！

发布于 2019-03-14 11:21:47 浏览：2478 订阅该版

10 个回答

hnhebing 2019-03-14

这家伙很懒，什么也没写！

我用nodejs 测试数据结果如下（aes.js）：

```
const crypto = require('crypto');

function aesEncrypt(data, key, vi) {
    const cipher = crypto.createCipheriv('aes-256-cbc', key, vi);
    var crypted = cipher.update(data, 'utf8', 'binary');
    crypted += cipher.final('binary');
        
//        crypted = new Buffer(crypted,'binary').toString('base64');
        crypted = Buffer.from(crypted,'binary').toString('base64');
    return crypted;
}

function aesDecrypt(encrypted, key, vi) {
//        encrypted = new Buffer(encrypted,'base64').toString('binary');
        encrypted = Buffer.from(encrypted,'base64').toString('binary');
        
    const decipher = crypto.createDecipheriv('aes-256-cbc', key, vi);
    var decrypted = decipher.update(encrypted, 'binary', 'utf8');
    decrypted += decipher.final('utf8');
    return decrypted;
}

var data = '!0123456789*0123456789*0123456789*0123456789*012345678912345678*';
var key = '0123456789ABCDEF0123456789ABCDEF';
var vi = '0123456789ABCDEF';
var encrypted = aesEncrypt(data, key, vi);
var decrypted = aesDecrypt(encrypted, key, vi);

console.log('原始数据 text: ' + data);
console.log('编码后数据 text: ' + encrypted);
console.log('解码后数据 text:  ' + decrypted);
```
测试结果如下：

```
D:\file_server>node aes.js
```
原始数据 text: 
`!0123456789*0123456789*0123456789*0123456789*012345678912345678*`
编码后数据 text: 
`uK8TckBe4Jy9XpqQyH9GQPwqkSvs6XcHRrUf4UreXkhj+zr1P0pYmAmqN3Gchx9gz31IfQJpKwRO5MZM8+HO3LciZwZF0rvdsvaSM6k1FeQ=`
解码后数据 text: 
`!0123456789*0123456789*0123456789*0123456789*012345678912345678*`

hnhebing 2019-03-14

这家伙很懒，什么也没写！

hnhebing 2019-03-22

这家伙很懒，什么也没写！

```
// 以下部分程序AES256 nodejs 已经调试OK

var crypto = require('crypto');
 
/**
 * 加密方法
 * @param key 加密key
 * @param iv       向量
 * @param data     需要加密的数据
 * @returns string
 */
var encrypt = function (key, iv, data) {
    var cipher = crypto.createCipheriv('aes-256-cbc', key, iv);
    var crypted = cipher.update(data, 'utf8', 'hex');
    crypted += cipher.final('hex');
//    crypted = new Buffer(crypted, 'binary').toString('base64');
    return crypted;
};
 
/**
 * 解密方法
 * @param key      解密的key
 * @param iv       向量
 * @param crypted  密文
 * @returns string
 */
var decrypt = function (key, iv, crypted) {
//    crypted = new Buffer(crypted, 'base64').toString('binary');
    var decipher = crypto.createDecipheriv('aes-256-cbc', key, iv);
    var decoded = decipher.update(crypted, 'hex', 'utf8');
    decoded += decipher.final('utf8');
    return decoded;
};
 
var key = '0123456789ABCDEF0123456789ABCDEF';
console.log('加密的key:', key.toString('hex'));
var iv = '0123456789ABCDEF';
console.log('加密的iv:', iv);
var data = "0123456789123456";
console.log("需要加密的数据:", data);
var crypted = encrypt(key, iv, data);
console.log("数据加密后:", crypted);
var dec = decrypt(key, iv, crypted);
console.log("数据解密后:", dec);
```

//=============================================================================

运行后结果：
```
D:\DOWNLOAD\aes\zlib>node test_aes.js
```
加密的key: `0123456789ABCDEF0123456789ABCDEF`
加密的iv: `0123456789ABCDEF`
需要加密的数据: `0123456789123456`
数据加密后: `1c5fdd7b10af0eb97f63bdf2ca78ec79b4b37690790a280612999601330a232c`
数据解密后: `0123456789123456`

hnhebing 2019-03-22

这家伙很懒，什么也没写！

[i=s] 本帖最后由 hnhebing 于 2019-3-22 09:42 编辑 [/i]

在qemu-vexpress-a9中运行 加密后数据正常，但是解密数据结果不对，现在找不到问题出在哪里？

程序如下：

// 加密内容
    rt_strncpy((char *)buffer, (const char *)"0123456789123456", 16); 
    for(i=0; i<16;i++){
        buffer[i+16] = 16;
    }
    
    // 加密
    tiny_aes_setkey_enc(&ctx, (unsigned char *)"0123456789ABCDEF0123456789ABCDEF", 256);
    tiny_aes_crypt_cbc(&ctx, AES_ENCRYPT, 32, (unsigned char *)"0123456789ABCDEF", buffer, cmprs_buffer);
    // 解密

tiny_aes_setkey_dec(&ctx1, (unsigned char *)"0123456789ABCDEF0123456789ABCDEF", 256);
    tiny_aes_crypt_cbc(&ctx1, AES_DECRYPT, 32, (unsigned char *)"0123456789ABCDEF",cmprs_buffer, dcmprs_buffer);

// 原始数据
    rt_kprintf("\nconext:%s", buffer);
    rt_kprintf("\naes enc:");
    for(i=0; i < 32; i++)
    {
        rt_kprintf("%02X ", cmprs_buffer[i]);[/i][i]
    }
    rt_kprintf("\naes dec:");
    for(i=0; i < 32; i++)
    {
        rt_kprintf("%02X ", dcmprs_buffer[i]);[/i][i]
    }
    rt_kprintf("\n");[/i][/i][i][i]

运行如下：

[/i][/i]

MurphyZhao 认证专家 2019-03-22

这家伙很懒，什么也没写！

hnhebing 2019-03-22

这家伙很懒，什么也没写！

[i=s] 本帖最后由 hnhebing 于 2019-3-22 14:49 编辑 [/i]

unsigned char iv[] = {"0123456789ABCDEF"};
    unsigned char key[]={"0123456789ABCDEF0123456789ABCDEF"};
    // 加密内容
    rt_strncpy((char *)buffer, (const char *)"0123456789123456", 16); 
    for(i=0; i<16;i++){
        buffer[i+16] = 16;
    }

// 加密
    tiny_aes_setkey_enc(&ctx, &key, 256);
    tiny_aes_crypt_cbc(&ctx, AES_ENCRYPT, 32, &iv, buffer, cmprs_buffer);
    // 解密

tiny_aes_setkey_dec(&ctx1, &key, 256);
    tiny_aes_crypt_cbc(&ctx1, AES_DECRYPT, 32, &iv, cmprs_buffer, dcmprs_buffer);

msh />aes_test                                                                                                
                                                                                                              
conext:0123456789123456►►►►►►►►►►►►►►►►                                                                       
aes enc:1C 5F DD 7B 10 AF 0E B9 7F 63 BD F2 CA 78 EC 79 B4 B3 76 90 79 0A 28 06 12 99 96 01 33 0A 23 2C       
aes dec:B4 B3 76 90 79 0A 28 06 12 99 E6 71 43 7A 53 5C 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10       
msh />

已经修改，结果还是一样！！