节点js中的RFC2898DeriveBytes等效项

debugcn 发表于 Dev

舒莎·B

试图将下面的C＃代码转换为nodeJS，但是结果不一样。这里需要一些帮助：C＃代码：

public static string Encrypt(string clearText)
        {
            string EncryptionKey = "abcdef";
            byte[] clearBytes = Encoding.Unicode.GetBytes(clearText);
            using (Aes encryptor = Aes.Create())
            {
                Rfc2898DeriveBytes pdb = new
                    Rfc2898DeriveBytes(EncryptionKey, new byte[] { 0x49, 0x76, 0x61, 0x6e, 0x20, 0x4d, 0x65, 0x64, 0x76, 0x65, 0x64, 0x65, 0x76 });
                encryptor.Key = pdb.GetBytes(32);
                encryptor.IV = pdb.GetBytes(16);
                using (MemoryStream ms = new MemoryStream())
                {
                    using (CryptoStream cs = new CryptoStream(ms, encryptor.CreateEncryptor(), CryptoStreamMode.Write))
                    {
                        cs.Write(clearBytes, 0, clearBytes.Length);
                        cs.Close();
                    }
                    clearText = Convert.ToBase64String(ms.ToArray());
                }
            }
            return clearText;
}

在JS中尝试的代码：

const crypto = require('crypto'),
  algorithm = 'aes-256-cbc',
  secret = 'abcdef',
  keystring = crypto.createHash('sha256').update(String(secret)).digest('base64').substr(0, 32);
  iv = crypto.createHash('sha256').update(String(secret)).digest('base64').substr(0, 16);
  inputEncoding = 'utf8',
  outputEncoding = 'base64';


function encrypt(text) {
  let cipher = crypto.createCipheriv('aes-128-cbc', keystring, iv);
  let encrypted = cipher.update(text, inputEncoding, outputEncoding);
  encrypted += cipher.final(outputEncoding);
  return encrypted;
}

在节点js中寻找兼容版本

托帕可

PBKDF2的参数为：

const secret = 'abcdef';
const salt = Buffer.from([0x49, 0x76, 0x61, 0x6e, 0x20, 0x4d, 0x65, 0x64, 0x76, 0x65, 0x64, 0x65, 0x76]); 
const iterations = 1000;
const length = 32 + 16;
const digest = 'sha1';
const keyIV = crypto.pbkdf2Sync(secret, salt, iterations, length, digest);

的前32个字节keyIV是密钥，其后的16个字节是IV：

const key = keyIV.slice(0, 32);
const iv = keyIV.slice(32, 32 + 16);

在该encrypt方法中，必须将UTF-16LE用作输入编码（utf16le）和aes-256-cbc算法/模式：

const inputEncoding = 'utf16le';
const outputEncoding = 'base64';
const algorithm = 'aes-256-cbc';
function encrypt(text) {
    let cipher = crypto.createCipheriv(algorithm, key, iv);
    let encrypted = cipher.update(text, inputEncoding, outputEncoding);
    encrypted += cipher.final(outputEncoding);
    return encrypted;
}

测试：

console.log(encrypt("The quick brown fox jumps over the lazy dog")); // u9JQyr8G0FbU1D+TF1ZmXNK8cMZjhL7xbhYitmXVaWNDu1hDiBY6TNUjKcza4fX99xN0f1tT3qSNHMGWTV8o2QkDnVqNQai07qAX4R2iSW/j4E8CKGwVOCWnQ46HbfWs

根据C＃代码的结果。

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