AES 解密不适用于 crypto.js

Question

我正在尝试使用 crypto-js 获取解密数据，但结果为空白。而相同的密钥可以在线进行 aes 解密。

var CryptoJS = require("crypto-js"); 
var key = '+MbQeThVmYq3t6w9z$C&F)J@NcRfUjXn';
var iv = '5ty76ujie3247';
var encdata = 'ad06c28a5c9d933bc73451f86fcaa69a';
cipher = CryptoJS.enc.Base64.stringify(CryptoJS.enc.Hex.parse(encdata))
var decrypt = CryptoJS.AES.decrypt(cipher, Buffer.from(key), {
iv: iv,
mode: CryptoJS.mode.CBC,
padding: CryptoJS.pad.Pkcs7
});

var ddd = decrypt.toString(CryptoJS.enc.Utf8);
console.log(ddd,"hey");

无法理解为什么会这样。但如果我使用加密，它可以使用以下代码

var crypto = require("crypto");
 let encryptedText = Buffer.from(encdata, 'hex');
        let decipher = crypto.createDecipheriv('aes-256-cbc', Buffer.from(key), iv);
        let decrypted = decipher.update(encryptedText);
        decrypted = Buffer.concat([decrypted, decipher.final()]);
       console.log(decrypted.toString());

Answer 1

密钥和 IV 必须作为 WordArray 对象（而不是字符串或 NodeJS 缓冲区）传递 [1]. Since both are specified as UTF8-strings, they can be converted into WordArray-objects with the corresponding UTF8-encoder (CryptoJS.enc.Utf8.parse(...)) [2]：

var key = CryptoJS.enc.Utf8.parse('+MbQeThVmYq3t6w9z$C&F)J@NcRfUjXn');         // Key: Use a WordArray-object instead of a UTF8-string / NodeJS-buffer 
var iv = CryptoJS.enc.Utf8.parse('5ty76ujie3247');                          // IV: Use a WordArray-object instead of a UTF8-string 
var encdata = 'ad06c28a5c9d933bc73451f86fcaa69a';
var cipher = CryptoJS.enc.Base64.stringify(CryptoJS.enc.Hex.parse(encdata));   

var decrypt = CryptoJS.AES.decrypt(cipher, key, {
  iv: iv,
  mode: CryptoJS.mode.CBC,
  padding: CryptoJS.pad.Pkcs7
});

var decrypted = decrypt.toString(CryptoJS.enc.Utf8);
console.log(decrypted);

<script src="https://cdnjs.cloudflare.com/ajax/libs/crypto-js/3.1.9-1/crypto-js.min.js"></script>

请注意，密文通常作为 CipherParams-object [1] 传递。或者，它可以作为字符串传递（如本例所示），然后隐式转换为具有可定义格式策略的 CipherParams 对象（默认情况下，一个应为 Base64 编码字符串）。

解密returns一个WordArray转换成UTF8字符串[4]:

AES 解密不适用于 crypto.js

AES decryption not working with crypto.js

javascript

encryption

hex

node.js

cryptojs