==========  C#代码  ==========
    private static byte[] KEY = { 1, 2, 3, 4, 5, 6, 7, 8 };
    private static byte[] IV = { 1, 2, 3, 4, 5, 6, 7, 8 };
    public static string EncryptDes(string input)
    {
        DESCryptoServiceProvider des = new DESCryptoServiceProvider();
        MemoryStream ms = null;
        CryptoStream encStream = null;
        StreamWriter sw = null;
        string result = String.Empty;

        try
        {
            ms = new MemoryStream();
            encStream = new CryptoStream(ms, des.CreateEncryptor(KEY, IV), CryptoStreamMode.Write);

            // Create a StreamWriter to write a string
            // to the stream.
            sw = new StreamWriter(encStream);

            // Write the plaintext to the stream.
            sw.WriteLine(input);

            sw.Flush();
            encStream.FlushFinalBlock();
            ms.Flush();

            byte[] bytes = ms.GetBuffer();
            Console.WriteLine(BitConverter.ToString(bytes, 0, 24));

            result = Convert.ToBase64String(bytes, 0, Convert.ToInt32(ms.Length, CultureInfo.InvariantCulture));
        }
        finally
        {
            //close objects
        }
        return result;
    }

    ==========  Node.js代码  ==========

var crypto = require(‘crypto’); var KEY = [ 1, 2, 3, 4, 5, 6, 7, 8 ]; var IV = [ 1, 2, 3, 4, 5, 6, 7, 8 ]; exports.encryptDes = function(input){ var cipher = crypto.createCipheriv('des’, new Buffer(KEY), new Buffer(IV)); var buf1 = cipher.update(input, ‘utf8’); var buf2 = cipher.final(); var result = new Buffer(buf1.length + buf2.length); buf1.copy(result); buf2.copy(result, buf1.length);

return result.toString('base64');

};