针对C＃和javascript的兼容AES加密和解密

Question

我正在尝试用C＃和javascript编写两个类，我可以在整个项目中使用它来在交换数据时使用AES加密或解密数据。

使用AES我在加密结果中嵌入Salt（32字节）和IV（16字节），这在测试时单独适用于两个类。将Salt和IV添加到混合中并没有引出很多参考，以使这两个平台之间的工作。

对于C＃，我使用标准的System.Security.Cryptography.AES

 private static readonly int iterations = 1000;

    public static string Encrypt(string input, string password)
    {
        byte[] encrypted;
        byte[] IV;
        byte[] Salt = GetSalt();
        byte[] Key = CreateKey(password, Salt);

        using (Aes aesAlg = Aes.Create())
        {
            aesAlg.Key = Key;
            aesAlg.Padding = PaddingMode.PKCS7;
            aesAlg.Mode = CipherMode.CBC;

            aesAlg.GenerateIV();
            IV = aesAlg.IV;

            var encryptor = aesAlg.CreateEncryptor(aesAlg.Key, aesAlg.IV);

            using (var msEncrypt = new MemoryStream())
            {
                using (var csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write))
                {
                    using (var swEncrypt = new StreamWriter(csEncrypt))
                    {
                        swEncrypt.Write(input);
                    }
                    encrypted = msEncrypt.ToArray();
                }
            }
        }

        byte[] combinedIvSaltCt = new byte[Salt.Length + IV.Length + encrypted.Length];
        Array.Copy(Salt, 0, combinedIvSaltCt, 0, Salt.Length);
        Array.Copy(IV, 0, combinedIvSaltCt, Salt.Length, IV.Length);
        Array.Copy(encrypted, 0, combinedIvSaltCt, Salt.Length + IV.Length, encrypted.Length);

        return Convert.ToBase64String(combinedIvSaltCt.ToArray());
    }

    public static string Decrypt(string input, string password)
    {
        byte[] inputAsByteArray;
        string plaintext = null;
        try
        {
            inputAsByteArray = Convert.FromBase64String(input);

            byte[] Salt = new byte[32];
            byte[] IV = new byte[16];
            byte[] Encoded = new byte[inputAsByteArray.Length - Salt.Length - IV.Length];

            Array.Copy(inputAsByteArray, 0, Salt, 0, Salt.Length);
            Array.Copy(inputAsByteArray, Salt.Length, IV, 0, IV.Length);
            Array.Copy(inputAsByteArray, Salt.Length + IV.Length, Encoded, 0, Encoded.Length);

            byte[] Key = CreateKey(password, Salt);

            using (Aes aesAlg = Aes.Create())
            {
                aesAlg.Key = Key;
                aesAlg.IV = IV;
                aesAlg.Mode = CipherMode.CBC;
                aesAlg.Padding = PaddingMode.PKCS7;

                ICryptoTransform decryptor = aesAlg.CreateDecryptor(aesAlg.Key, aesAlg.IV);

                using (var msDecrypt = new MemoryStream(Encoded))
                {
                    using (var csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read))
                    {
                        using (var srDecrypt = new StreamReader(csDecrypt))
                        {
                            plaintext = srDecrypt.ReadToEnd();
                        }
                    }
                }
            }

            return plaintext;
        }
        catch (Exception e)
        {
            return null;
        }
    }

    public static byte[] CreateKey(string password, byte[] salt)
    {
        using (var rfc2898DeriveBytes = new Rfc2898DeriveBytes(password, salt, iterations))
            return rfc2898DeriveBytes.GetBytes(32);
    }

    private static byte[] GetSalt()
    {
        var salt = new byte[32];
        using (var random = new RNGCryptoServiceProvider())
        {
            random.GetNonZeroBytes(salt);
        }

        return salt;
    }

对于Javascript解决方案，我使用CryptoJS，基于此参考http://www.adonespitogo.com/articles/encrypting-data-with-cryptojs-aes/

    var keySize = 256;
var ivSize = 128;
var saltSize = 256;
var iterations = 1000;

var message = "Hello World";
var password = "Secret Password";


function encrypt (msg, pass) {
  var salt = CryptoJS.lib.WordArray.random(saltSize/8);

  var key = CryptoJS.PBKDF2(pass, salt, {
      keySize: keySize/32,
      iterations: iterations
    });

  var iv = CryptoJS.lib.WordArray.random(ivSize/8);

  var encrypted = CryptoJS.AES.encrypt(msg, key, { 
    iv: iv, 
    padding: CryptoJS.pad.Pkcs7,
    mode: CryptoJS.mode.CBC

  });

  // salt, iv will be hex 32 in length
  // append them to the ciphertext for use  in decryption
  var transitmessage = salt + iv + encrypted;
  return transitmessage.toString();
}

function decrypt (transitmessage, pass) {
  var salt = CryptoJS.enc.Hex.parse(transitmessage.substr(0, 64));
  var iv = CryptoJS.enc.Hex.parse(transitmessage.substr(64, 32));
  var encrypted = transitmessage.substring(96);

  var key = CryptoJS.PBKDF2(pass, salt, {
      keySize: keySize/32,
      iterations: iterations
    });

  var decrypted = CryptoJS.AES.decrypt(encrypted, key, { 
    iv: iv, 
    padding: CryptoJS.pad.Pkcs7,
    mode: CryptoJS.mode.CBC

  })
  return decrypted.toString(CryptoJS.enc.Utf8);
}

使用密码：Secret Password

C＃结果：r7Oi1vMXZ5mYJay8i+slbJZEiT3CxV/1zOYntbZIsS5RuasABJKQQQVvAe50U1deIIqyQiwzQWYelMJ48WWpMQ==

Javascript结果：72ff8e7b653efbe3101d2c4ca7d7fe1af06652b907a90281aafa5ae09b45c9af091571b08d3d39cbad129939488319b2pprMQFFEJZR5JlrDsMqT8w==

结果应该是Hello World

这两种解决方案都适用于自己的环境，但是C＃或Javascript哈希值无法交换，它们不会解密。我的猜测是字符编码与它有关，因此base64大小差异如此之大。有没有人有想法让这个合作？谢谢！

Answer 1

另一答案