private async void SendPublicKeyForSecureTransfer(string sessionId)
{
// We need to generate a public/private key pair.
KeyValuePair <string, string> cryptoKeyPair = CryptoProvider.GenerateKeys();
// Store the Private Key, using its Public Key as the ID.
SessionManager.Instance.sessions[cryptoKeyPair.Key] = cryptoKeyPair.Value;
// Send the public key up to the server.
// We need to include the sessionId so that the server knows
// which message to encrypt and send down.
log.Info("Sending generated public key, including sessionId");
var cypherTextMessage = await _chatHubProxy.Invoke <Message>("GetMessageSecurely", new KeyValuePair <string, string>(sessionId, cryptoKeyPair.Key));
log.Info("Recieved encrypted message");
var message = CryptoProvider.Decrypt(cypherTextMessage, SessionManager.Instance.sessions[cryptoKeyPair.Key]);
log.Info("Decrypted message");
//Console.WriteLine("{0} {1}: {2}", DateTime.Now.ToShortTimeString(), message.Sender, message.MessageContent);
printMessageUnobtrusively(message);
// Remove the session from the session store
SessionManager.Instance.sessions.Remove(cryptoKeyPair.Key);
}
public string GetPublicKeyForSecureTransfer()
{
KeyValuePair <string, string> cryptoKeyPair = CryptoProvider.GenerateKeys();
// Store the Private Key, using its Public Key as the ID.
SessionManager.Instance.sessions.Add(cryptoKeyPair.Key, cryptoKeyPair.Value);
// Return the public key, so the requesting client can send
// an encrypted message.
return(cryptoKeyPair.Key);
}
public bool Connect(string addr, int port = 0)
{
ErrorMessage = null;
if (port == 0)
{
port = DefaultPort;
}
try
{
IsLogined = false;
if (Client != null)
{
Client.Dispose();
}
}
catch
{ }
try
{
//Loger.Log("Client Connect1");
// Generate open-close keys KClose-KOpen
//Генерим рандомную пару КЗакр-КОткр
var crypto = new CryptoProvider();
if (UseCryptoKeys)
{
crypto.GenerateKeys();
}
//Loger.Log("Client Connect2");
Client = new ConnectClient(addr, port);
//Loger.Log("Client Connect3");//Строго первый пакет: Передаем серверу КОткр
if (UseCryptoKeys)
{
Client.SendMessage(Encoding.UTF8.GetBytes(crypto.OpenKey));
}
else
{
Client.SendMessage(new byte[1] {
0x00
});
}
//Loger.Log("Client Connect4");
//Строго первый ответ: Передаем клиенту КОткр(Сессия)
var rc = Client.ReceiveBytes();
if (UseCryptoKeys)
{
Key = crypto.Decrypt(rc);
}
else
{
Key = rc;
}
//Loger.Log("Client Connect5");
//Обмен по протоколу ниже: Передаем серверу Сессия(Логин - Пароль или запрос на создание)
//Запускаем таймер фоново поддерживающий открытое соединение при простое
ConnectSaver.AddClient(Client, (cl) =>
{
lock (LockObj)
{
cl.SendMessage(new byte[1] {
0x00
});
cl.ReceiveBytes();
}
});
return(true);
}
catch (Exception e)
{
ErrorMessage = e.Message
+ (e.InnerException == null ? "" : " -> " + e.InnerException.Message);
ExceptionUtil.ExceptionLog(e, "Client");
return(false);
}
}