public static string Decrypt(string Data, byte[] Key, byte[] IV)
{
try
{
MemoryStream msDecrypt = new MemoryStream(Convert.FromBase64String(Data));
// Create a CryptoStream using the MemoryStream
// and the passed key and initialization vector (IV).
CryptoStream csDecrypt = new CryptoStream(msDecrypt,
new TripleDESCryptoServiceProvider().CreateDecryptor(Key, IV),
CryptoStreamMode.Read);
// Create buffer to hold the decrypted data.
byte[] fromEncrypt = new byte[Data.Length];
// Read the decrypted data out of the crypto stream
// and place it into the temporary buffer.
csDecrypt.Read(fromEncrypt, 0, fromEncrypt.Length);
//Convert the buffer into a string and return it.
string ReturnValue = new ASCIIEncoding().GetString(fromEncrypt);
if (ReturnValue.Contains("\0\0\0"))
{
ReturnValue = ReturnValue.Remove(ReturnValue.IndexOf("\0\0\0"));
}
return ReturnValue;
}
catch (CryptographicException e)
{
Console.WriteLine("A Cryptographic error occurred: {0}", e.Message);
return null;
}
}
private void HandleClientComm(object client)
{
// Cast Client
TcpClient tcpClient = (TcpClient)client;
// Add Client
string dictionaryKey = Guid.NewGuid().ToString();
if (ClientHandler.Clients.ContainsKey(dictionaryKey))
ClientHandler.Clients.Remove(dictionaryKey);
ClientHandler.Clients.Add(dictionaryKey, tcpClient);
try
{
NetworkStream clientStream = tcpClient.GetStream();
byte[] message = new byte[MessageSize];
while (true)
{
int bytesRead;
try
{
// Blocks until message is sent to server
bytesRead = clientStream.Read(message, 0, MessageSize);
}
catch (Exception exception)
{
// Socket Error Occurred
Console.WriteLine(exception.ToString());
break;
}
// Client Disconnected
if (bytesRead == 0) break;
// Message Received
string messagesString = new ASCIIEncoding().GetString(message, 0, bytesRead);
// Validate Message
if (String.IsNullOrEmpty(messagesString) || !messagesString.Contains(EndTerminator)) continue;
// Handle Message(s)
foreach (string messageString in Regex.Split(messagesString, EndTerminator)
.Where(messageString => !String.IsNullOrEmpty(messageString)))
{
ThreadPool.QueueUserWorkItem(ClientHandler.HandleCommand, new Message(dictionaryKey, messageString));
}
}
}
catch (Exception exception)
{
Console.WriteLine(exception.ToString());
}
finally
{
try
{
if (ClientHandler.Clients.ContainsKey(dictionaryKey))
ClientHandler.Clients.Remove(dictionaryKey);
if (ClientHandler.PlayerOne.ContainsKey(dictionaryKey))
ClientHandler.PlayerOne.Remove(dictionaryKey);
if (ClientHandler.PlayerTwo.ContainsKey(dictionaryKey))
ClientHandler.PlayerTwo.Remove(dictionaryKey);
tcpClient.Close();
}
catch (Exception exception)
{
Console.WriteLine(exception.ToString());
}
}
}
