如何使用CryptoJS AES解密消息.我有一个Ruby的例子

这适用于使用javascript进行解密。

<script src="https://cdnjs.cloudflare.com/ajax/libs/crypto-js/3.1.9-1/aes.js"></script>
var key = "2e35f242a46d67eeb74aabc37d5e5d05";
var data = CryptoJS.AES.encrypt("Message", key); // Encryption Part
var decrypted = CryptoJS.AES.decrypt(data, key).toString(CryptoJS.enc.Utf8); // Message

我想我参加聚会有点晚了。

这似乎对我有效（将解码字符串写入控制台）：

data = "IYkyGxYaNgHpnZWgwILMalVFmLWFgTCHCZL9263NOcfSo5lBjAzOZAtF5bF++R0Bi+9c9E+p3VEr/xvj4oABtRWVJ2wlWzLbYC2rKFk5iapFhb7uZCUpO4w4Su3a5QFa2vInjYueziRoqySZd/DpstMJ8rsJ94VGizFFFZ1l0sw1ax+wfBAv5+wHs/hlnHi/ea66KBO3rgXKahvV28h+4bh5etc8RCrmiiNbfg6Oj0jQJDjdYIdW8T9YPOI9E1hih8lbfRnMWcOFJgYekfLpoy5LI525UGnlM46J1k6ekLqsn9FqvbiOOoLgqa4YqBm1i9P0ePyjkME+t+RiL8xXX+ItgOYr9G7kM64wlTJPCW8B/crmUdmGzQNC/hD/u/8wfHBS2f8u6OtQMG/+Kpk1oju8lcUZGI/4S8A6/OuktvQr2zgnbs2aADMrM37Oait/pJ3G73S7NwVT8EaK+X43c0C/fUvW2/bD/rqCNpAh9WQlz4Cj6JHwjbmwuind6aCimF1tHjXuR9FXu+g17sPT4ZkKZ6aeBG+m170XdCGn2hVM0wH1rh3VeCG2u/JFqfuGKGSoqeHeNY/icu9pEhtZDzHd7aPoaMXcWvXC9PjooBf7GM1EPacSdnon1kBobjtKSt1l15DjO5TMrJoX7VO7GotQwo+uI/u5Kop01hBXxyxyggl1/8N0ESohPJoqLDrIwvbGK5kW4B49FVPnx9CMvjZDdSsoxPAh+hx6SPe8Hj0Nx4bRs06cbtOkte/V8QSYIqjiJDleEqPrdiKlvgToZz9L29ZR/3Ln65qU1sq7q9c0SEYxIopV7TdTjFS7y76zDPFZkhzc3DjfLtJo/M1hdtt648APcZdmAIgWH6fh3eJZ0qbiPh8RStYH7I2COmnlMw4+t/B5mlhYVSgwPK2Ir736Mh+P9Bw0fF8r9Ghhs4AJzpU0RiK9d1tCsrLfK/hSRwTXhtsSB6eDWEGkO7oeEIz43mgn0sv3SrA9JNHzYkg=";
key = "2e35f242a46d67eeb74aabc37d5e5d05";
// Decode the base64 data so we can separate iv and crypt text.
var rawData = atob(data);
var iv = btoa(rawData.substring(0,16));
var crypttext = btoa(rawData.substring(16));
// Decrypt...
var plaintextArray = CryptoJS.AES.decrypt(
  {
    ciphertext: CryptoJS.enc.Base64.parse(crypttext),
    salt: ""
  },
  CryptoJS.enc.Hex.parse(key),
  { iv: CryptoJS.enc.Base64.parse(iv) }
);
// Convert hex string to ASCII.
// See https://stackoverflow.com/questions/11889329/word-array-to-string
function hex2a(hex) {
    var str = '';
    for (var i = 0; i < hex.length; i += 2)
        str += String.fromCharCode(parseInt(hex.substr(i, 2), 16));
    return str;
}
console.log(hex2a(plaintextArray.toString()));

正如jlvaquero所说，重要的是在输入中指定no salt，并将键作为WordArray传递。可能还有一些效率方面的改进，例如，我猜有一种更简单的方法可以将字符串转换为WordArray，而不是转换为base64并返回，但至少它能成功解码。我将hex2a函数从StackOverflow问题字数组提升为字符串。

编辑：我发现了如何使用CryptoJS将字符串转换为WordArrays，反之亦然，因此不需要额外的base64编码/解码和十六进制到ASCII函数。此外，事实证明，盐的性质不需要指定。这更紧凑、更高效：

data = "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";
key = "2e35f242a46d67eeb74aabc37d5e5d05";
// Decode the base64 data so we can separate iv and crypt text.
var rawData = atob(data);
var iv = rawData.substring(0,16);
var crypttext = rawData.substring(16);
// Decrypt...
var plaintextArray = CryptoJS.AES.decrypt(
  { ciphertext: CryptoJS.enc.Latin1.parse(crypttext) },
  CryptoJS.enc.Hex.parse(key),
  { iv: CryptoJS.enc.Latin1.parse(iv) }
);
console.log(CryptoJS.enc.Latin1.stringify(plaintextArray));

encryptWithCryptoJS(plainText: string): string {
    const key = CryptoJS.enc.Utf8.parse("hf8685nfhfhjs9h8");
    const iv1 = CryptoJS.enc.Utf8.parse("hf8685nfhfhjs9h8");
    const encrypted = CryptoJS.AES.encrypt(plainText, key, {
        keySize: 16,
        iv: iv1,
        mode: CryptoJS.mode.ECB,
        padding: CryptoJS.pad.Pkcs7
    });
    return encrypted + "";
}
decryptionWithCryptoJS(cipher: string): string {
    const key = CryptoJS.enc.Utf8.parse("hf8685nfhfhjs9h8");
    const iv1 = CryptoJS.enc.Utf8.parse("hf8685nfhfhjs9h8");
    const plainText = CryptoJS.AES.decrypt(cipher, key, {
        keySize: 16,
        iv: iv1,
        mode: CryptoJS.mode.ECB,
        padding: CryptoJS.pad.Pkcs7
    });
    return plainText.toString(CryptoJS.enc.Utf8);
}

对于另一个用户提供的hex2a，如果ascii码超过128（即文本包含中文等），它可能不起作用

可以使用以下命令返回正确的unicode

function hex2a(hex) {
    var str = '';
    for (var i = 0; i < hex.length; i += 2){
        var dec = parseInt(hex.substr(i, 2), 16);
        character = String.fromCharCode(dec);

        if (dec > 127)
            character = "%"+hex.substr(i,2);
        str += character;
    }
    return decodeURI(str);
}

    var key = CryptoJS.enc.Utf8.parse('8080808080808080');
    var iv = CryptoJS.enc.Utf8.parse('8080808080808080');
    var _enid = CryptoJS.AES.decrypt(data, key,
  {
      keySize: 128 / 8,
      iv: iv,
      mode: CryptoJS.mode.CBC,
      padding: CryptoJS.pad.Pkcs7
  }).toString(CryptoJS.enc.Utf8);
    return _enid;