/// <summary>
/// metoda sluzaca do zalogowania uzytkownika
/// </summary>
/// <param name="obj">obiekt sluzacy do uruchomienia metody</param>
private void Login(object obj)
{
client = new TcpClient("127.0.0.1", 5000);
var reader = new BinaryReader(client.GetStream());
var serverPKString = reader.ReadString();
serverPK.FromXmlString(serverPKString);
user.Username = loginTextBox.Text;
user.Password = passwordTextBox.Text;
bool registered=false;
RSACryptoServiceProvider pk = new RSACryptoServiceProvider();
user.RSAKeys = pk.ExportParameters(true);
if (registerRadioButton.Checked)
{
registered = false;
}
else if (loginRadioButton.Checked)
{
registered = true;
}
var message = new RegisterMessage(user.Username, user.Password, pk.ExportParameters(false),registered);
var messageEncrypted = Security.EncryptMessage(message, serverPK.ExportParameters(false));
var writer = new BinaryWriter(client.GetStream());
writer.Write(messageEncrypted);
var t = reader.ReadString();
var loginReply = (Messages.Message)MessageSerializer.Deserialize(t, typeof(Messages.Message));
MessageBox.Show(loginReply.data);
if (loginReply.data.Equals("Chosen username was free. Account added.") || loginReply.data.Equals("Login succeeded."))
{
loginButton.EnableButton(false);
loggedIn = true;
}
while (loggedIn)
{
try
{
var buffer = reader.ReadString();
if (messageReceived != null)
{
messageReceived(this, new MessageReceivedEventArgs(buffer));
}
}
catch (Exception ex) { Console.WriteLine(ex.Message); }
}
}
/// <summary>
/// metoda do szyfrowania wiadomosci rejestracyjnej algorytmen RSa
/// </summary>
/// <param name="message">wiadomosc do odszyfrowania</param>
/// <param name="keyInfo">klucze RSA</param>
/// <returns>zserializowana i odszyfrowana wiadomosc</returns>
public static string DecryptMessage(RegisterMessage message, RSAParameters keyInfo)
{
var converter = new UnicodeEncoding();
var username = Convert.FromBase64String(message.Username);
var password = Convert.FromBase64String(message.Password);
string decryptedUsername = converter.GetString(RSADecrypt(username, keyInfo, false));
string decryptedPassword = converter.GetString(RSADecrypt(password, keyInfo, false));
var decryptedMessage = new RegisterMessage(decryptedUsername, decryptedPassword, message.PublicKey, message.IsRegistred);
return MessageSerializer.Serialize(decryptedMessage, decryptedMessage.GetType());
}
