EncrypterAndDecrypter.EncryptQryParam Method

public static string EncryptQryParam(string input)
 {
     RijndaelManaged RijndaelCipher = new RijndaelManaged();
     byte[] PlainText = Encoding.Unicode.GetBytes(input);
     byte[] Salt = Encoding.ASCII.GetBytes(password.Length.ToString());
     PasswordDeriveBytes SecretKey = new PasswordDeriveBytes(password, Salt);
     ICryptoTransform Encryptor = RijndaelCipher.CreateEncryptor(SecretKey.GetBytes(32),
         SecretKey.GetBytes(16));
     MemoryStream memoryStream = new MemoryStream();
     CryptoStream cryptoStream = new CryptoStream(memoryStream,
         Encryptor,
         CryptoStreamMode.Write);
     cryptoStream.Write(PlainText, 0, PlainText.Length);
     cryptoStream.FlushFinalBlock();
     byte[] CipherBytes = memoryStream.ToArray();
     memoryStream.Close();
     cryptoStream.Close();
     string EncryptedData = Convert.ToBase64String(CipherBytes);
     return EncryptedData.Replace("+", "~").Replace("/", "^");
 }