public void connectUntilSuss(onConnect onConnect)
{
Thread x = new Thread(() =>
{
while (true)
{
try
{
tcpClient = new TcpClient(ip, host);
stream = new AdvanceStream(tcpClient.GetStream());
isServerReady = true;
onConnect.Invoke(stream);
if (tcpClient != null)
{
break;
}
}
catch (Exception e)
{
}
}
});
x.IsBackground = true;
x.Start();
}
public static void TransferWithPGP(AdvanceStream stream, string transactionData)
{
RSA rsa = new RSA(MainWindow.user.Username);
AES aes = AES.getInstance();
byte[] encryptedSessionKey = rsa.encrypte(getBytes(KeyManager.SessionKey), KeyManager.serverRSAPublicKey);
stream.Write("4");
stream.Write(encryptedSessionKey);
string EncreptedTransferData = aes.Encrypt(transactionData, KeyManager.SessionKey);
stream.Write(EncreptedTransferData);
MainWindow.instance.Log("Session Key", Convert.ToBase64String(getBytes(KeyManager.SessionKey)));
MainWindow.instance.Log("Encrypted Session Key", Convert.ToBase64String(encryptedSessionKey));
MainWindow.instance.Log("Transfer Data", transactionData);
MainWindow.instance.Log("Encrypted Transfer Data", EncreptedTransferData);
stream.Write(KeyManager.RSAPublicKey);
string message = getString(encryptedSessionKey) + EncreptedTransferData;
byte[] signture = rsa.signData(getBytes(message), KeyManager.RSAPrivateKey);
stream.Write(signture);
MainWindow.instance.Log();
}
private static void issueCertificate(AdvanceStream stream, MainWindow mainwindow)
{
DateTime time = DateTime.Now;
string data = stream.ReadString();
string[] word = data.Split('\t');
string Name = word[0];
String PublicKey = word[1];
DigitalCertificate digitalCertificate = new DigitalCertificate(SerialNumber++, Name, time, PublicKey);
mainwindow.Log("Digital Certificate", digitalCertificate.ToString());
mainwindow.Log();
MessageBoxResult result = MessageBox.Show("Send the Certificate", "Confirmation", MessageBoxButton.OKCancel, MessageBoxImage.Question);
if (result == MessageBoxResult.OK)
{
stream.Write("1");
string message = digitalCertificate.ToString();
stream.Write(digitalCertificate.toJsonObject());
}
else
{
stream.Write("0");
}
}
public static void GetPublicKey(AdvanceStream stream)
{
stream.Write("0");
byte[] inStream;
inStream = stream.ReadBytes();
KeyManager.serverRSAPublicKey = Encoding.UTF8.GetString(inStream, 0, inStream.Length);
MainWindow.instance.Log("Server AES Public Key", KeyManager.serverAESPublicKey);
MainWindow.instance.Log("Server AES Public Key", KeyManager.serverRSAPublicKey);
MainWindow.instance.Log();
}
public void connect(onConnect onConnect)
{
try
{
tcpClient = new TcpClient(ip, host);
stream = new AdvanceStream(tcpClient.GetStream());
onConnect.Invoke(stream);
}
catch (Exception e) {
logger.Invoke("Error while connect to server " + e.Message);
}
}
public static Server.Models.Client Login(AdvanceStream stream, string loginData)
{
// To generate private key for RSA if not exist
RSA rsa = new RSA(LoginObject.newLoginObject(loginData).username);
KeyManager.generateRSAPublicKey(rsa.rsaSP);
KeyManager.generateRSAPrivateKey(rsa.rsaSP);
stream.Write("1");
stream.Write(KeyManager.RSAPublicKey);
AES aes = AES.getInstance();
byte[] msg = Encoding.UTF8.GetBytes(loginData);
byte[] EncreptedLoginData = rsa.encrypte(msg, KeyManager.serverRSAPublicKey);
MainWindow.instance.Log("Login Data", loginData);
MainWindow.instance.Log("Encrypted Login Data", Encoding.UTF8.GetString(EncreptedLoginData));
stream.Write(EncreptedLoginData);
string response = stream.ReadString();
if (response.Equals("0"))
{
//no user
MainWindow.instance.Log("No such user");
MainWindow.instance.Log();
return(null);
}
else if (response.Equals("1"))
{
//wrong password
MainWindow.instance.Log("Wrong Password");
MainWindow.instance.Log();
return(null);
}
else
{
//ok
response = stream.ReadString();
Server.Models.Client loginClient = Server.Models.Client.newClientObject(response);
MainWindow.instance.Log(response);
byte[] inStream = stream.ReadBytes();
byte[] decrypKey = rsa.decrypt(inStream, KeyManager.RSAPrivateKey);
MainWindow.instance.Log("Encrypted AES Key", Convert.ToBase64String(inStream, 0, inStream.Length));
KeyManager.serverAESPublicKey = Convert.ToBase64String(decrypKey, 0, decrypKey.Length);
MainWindow.instance.Log("AES Key", KeyManager.serverAESPublicKey);
return(loginClient);
}
}
public static void ViewAllAccounts(AdvanceStream stream)
{
AES aes = AES.getInstance();
stream.Write("3");
string encrptedAccounts = stream.ReadString();
string deryptedAccounts = aes.Decrypt(encrptedAccounts, KeyManager.serverAESPublicKey);
MainWindow.instance.Log("Encrypted Accounts Data", encrptedAccounts);
MainWindow.instance.Log("Decrypted Accounts Data", deryptedAccounts);
MainWindow.instance.Log();
}
public static void TransferWithRSA(AdvanceStream stream, string transactionData)
{
RSA rsa = new RSA(MainWindow.user.Username);
byte[] EncryptedTransferData = rsa.encrypte(getBytes(transactionData), KeyManager.serverRSAPublicKey);
stream.Write("2");
stream.Write(EncryptedTransferData);
MainWindow.instance.Log("Transfer Data", transactionData);
MainWindow.instance.Log("Encrypted Transfer Data", getString(EncryptedTransferData));
MainWindow.instance.Log();
}
private void resposeToClient(AdvanceStream streamWithClient)
{
// waiting to recive smth from spesific client
Thread x = new Thread(() =>
{
while (true)
{
respose.Invoke(streamWithClient);
}
});
x.IsBackground = true;
x.Start();
}
public static void ProcessRequst(string requestType, AdvanceStream stream, MainWindow mainwindow)
{
switch (requestType)
{
case "0":
issueCertificate(stream, mainwindow);
break;
case "2":
mainwindow.Log("Server is connected");
break;
case "3":
sendPublicKey(stream, mainwindow);
break;
case "100":
MainWindow.instance.Log("A client is connected");
break;
}
}
public static bool getCertificate(AdvanceStream stream, string userName, string publicKey, out Models.DigitalCertificate dc)
{
stream.Write("0");
stream.Write(userName + '\t');
stream.Write(publicKey);
string result = stream.ReadString();
if (result == "1")
{
string certificateString = stream.ReadString();
Models.DigitalCertificate certificate = Models.DigitalCertificate.newClientObject(certificateString);
dc = certificate;
MainWindow.instance.Log(certificate.ToString());
MessageBox.Show(certificate.ToString());
return(true);
}
else
{
dc = null;
return(false);
}
}
public static void sendPublicKey(AdvanceStream stream, MainWindow mainWindow)
{
stream.Write(Algorithms.KeyManager.RSAPublicKey);
mainWindow.Log("public key is send to server");
}
public static bool SignUp(AdvanceStream stream, string signUpData)
{
bool result = false;
bool signUpResult = false;
SignUpObject signUp = SignUpObject.newLoginObject(signUpData);
MainWindow.clientForCertificate.connectUntilSuss((e) =>
{
RequestsManager.connectToCA(e);
});
RSA rsa = new RSA(signUp.name);
KeyManager.generateRSAPublicKey(rsa.rsaSP);
KeyManager.generateRSAPrivateKey(rsa.rsaSP);
Models.DigitalCertificate dc = new Models.DigitalCertificate();
result = getCertificate(MainWindow.clientForCertificate.stream, signUp.name, KeyManager.RSAPublicKey, out dc);
stream.Write("5");
if (result)
{
stream.Write(dc.toJsonObject());
string checkResult = stream.ReadString();
if (checkResult == "1")
{
MainWindow.instance.Log("Certificate has been checked\nreciving Server Public Key");
byte[] signUpByte = Encoding.UTF8.GetBytes(signUpData);
byte[] EncreptedLoginDataByte = rsa.encrypte(signUpByte, KeyManager.serverRSAPublicKey);
MainWindow.instance.Log("Sign Up Data", signUpData);
MainWindow.instance.Log("Encrypted Sign Up Data", Encoding.UTF8.GetString(EncreptedLoginDataByte));
stream.Write(EncreptedLoginDataByte);
string response = stream.ReadString();
if (response.Equals("0"))
{
//no user
MainWindow.instance.Log("User name is taken");
signUpResult = false;
}
else if (response.Equals("1"))
{
//wrong password
MainWindow.instance.Log("Password is takten");
signUpResult = false;
}
else
{
//ok
response = stream.ReadString();
string[] words = response.Split('\t');
MainWindow.user = Server.Models.Client.newClientObject(words[0]);
MainWindow.instance.Log(words[0]);
byte[] inStream = stream.ReadBytes();
byte[] decrypKey = rsa.decrypt(inStream, KeyManager.RSAPrivateKey);
MainWindow.instance.Log("Encrypted AES Key", Convert.ToBase64String(inStream, 0, inStream.Length));
KeyManager.serverAESPublicKey = Convert.ToBase64String(decrypKey, 0, decrypKey.Length);
MainWindow.instance.Log("AES Key", KeyManager.serverAESPublicKey);
signUpResult = true;
}
}
else
{
MessageBox.Show("Not a vailed certificate");
}
MainWindow.instance.Log();
}
else
{
MessageBox.Show("Can't get a certificate");
}
return(signUpResult);
}
public static void connectToCA(AdvanceStream stream)
{
stream.Write("100");
}
