C＃到Java加密和解密 [英] C# to Java Encryption and Decryption

问题描述

我正在尝试在Java Android中进行加密和解密。



以下是我的C＃代码，我需要将其转换为Java Android。有人可以帮我怎么做吗？



我已经这样做了将近2天但却找不到任何有关如何转换它的解决方案。我是Android的新手。

I'm trying to do an Encryption and Decryption in Java Android.

Below is my code for C#, I need to convert it to Java Android. Can someone help me how to do it?

I've been doing this for almost 2 days yet can't find any solutions on how to convert it. I'm newbie in Android.

public static string Encrypt(string toEncrypt)
        {
            byte[] keyArray;
            byte[] toEncryptArray = UTF8Encoding.UTF8.GetBytes(toEncrypt);

            System.Configuration.AppSettingsReader settingsReader = new AppSettingsReader();

            string key = "KEY";

            MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider();
            keyArray = hashmd5.ComputeHash(UTF8Encoding.UTF8.GetBytes(key));
            hashmd5.Clear();

            TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider();
            tdes.Key = keyArray;
            tdes.Mode = CipherMode.ECB;
            tdes.Padding = PaddingMode.PKCS7;

            ICryptoTransform cTransform = tdes.CreateEncryptor();
            byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
            tdes.Clear();
            return Convert.ToBase64String(resultArray, 0, resultArray.Length);
        }

        public static string Decrypt(string cipherString)
        {
            try
            {
                byte[] keyArray;
                byte[] toEncryptArray = Convert.FromBase64String(cipherString);

                string key = "KEY";

                MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider();
                keyArray = hashmd5.ComputeHash(UTF8Encoding.UTF8.GetBytes(key));
                hashmd5.Clear();

                TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider();
                tdes.Key = keyArray;
                tdes.Mode = CipherMode.ECB;
                tdes.Padding = PaddingMode.PKCS7;

                ICryptoTransform cTransform = tdes.CreateDecryptor();
                byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);

                tdes.Clear();
                return UTF8Encoding.UTF8.GetString(resultArray);
            }
            catch (Exception)
            {
                return "Invalid";
            }
        }

推荐答案

参见 http://nelenkov.blogspot.co.uk/2012/04/using-password-based-encryption-on.html [ ^ ]。您也可以使用Google搜索其他artivcles。

See http://nelenkov.blogspot.co.uk/2012/04/using-password-based-encryption-on.html[^]. You can also use Google to search for other artivcles.

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