/*private void GetCertificate(String domainName)
{
//String cert = rootServer.GetCertificate(domainName);
//String[] certFields = cert.Split(',');
//Console.WriteLine(cert);
byte[] rawCertData = rootServer.GetCertificate(domainName);
if (rawCertData != null)
{
Certificate.OpenCertificate();
Certificate.AddCertificate(rawCertData);
//Console.WriteLine(Convert.ToBase64String(rawCertData));
Console.WriteLine("Certificate has been downloaded successfully.");
}
}*/
static void Main(string[] args)
{
RemotingConfiguration.Configure(AppDomain.CurrentDomain.SetupInformation.ConfigurationFile, false);
ServerObject serverobj = new ServerObject();
//serverobj.KeyObt("*****@*****.**", DateTime.Now);
Console.Write("Enter passphrase: ");
passphrase = Console.ReadLine();
passphrase.Trim();
Core core = new Core(passphrase);
core.ReadSettingsFile();
Server server = new Server();
server.Connect(core.GetXmlNodeInnerText("root_server"));
DatabaseConnection connection = new DatabaseConnection();
String publicKey = core.PublicKey;
String dbPublicKey = connection.getPublicKey("server");
connection.close();
StreamWriter writer = new StreamWriter(core.ActionLogFile, true);
if (publicKey != dbPublicKey)
{
writer.Write(DateTime.Now.ToString() + Core.space);
writer.WriteLine("Server's old public key:");
writer.WriteLine();
writer.WriteLine(dbPublicKey);
writer.WriteLine();
//connection = new DatabaseConnection();
//connection.setPublicKey("server", "server", publicKey);
connection.updatePublicKey("server", "server", publicKey);
Console.Write(DateTime.Now.ToString() + Core.space);
Console.WriteLine("New key pair is set.");
}
connection.close();
writer.Write(DateTime.Now.ToString() + Core.space);
writer.WriteLine("Server's public key:");
writer.WriteLine();
writer.WriteLine(publicKey);
writer.WriteLine();
writer.Write(DateTime.Now.ToString() + Core.space);
writer.WriteLine("Server started");
writer.Close();
Console.Write(DateTime.Now.ToString() + Core.space);
Console.WriteLine("PractiSES Server started.");
HttpServerChannel channel = new HttpServerChannel(80);
ChannelServices.RegisterChannel(channel,false);
RemotingConfiguration.RegisterWellKnownServiceType(
typeof(PractiSES.ServerObject),
"PractiSES",
WellKnownObjectMode.SingleCall);
System.Console.ReadLine();
}
public DatabaseConnection()
{
try
{
Core core = new Core(Server.passphrase, false);
connectionstring = String.Format("server={0};uid={1};pwd={2};database={3}", core.GetXmlNodeInnerText("server"), core.GetXmlNodeInnerText("uid"), core.GetXmlNodeInnerText("pwd"), core.GetXmlNodeInnerText("dbase"));
conn = new MySqlConnection(connectionstring);
conn.Open();
}
catch (Exception e)
{
Console.WriteLine("Exception: " + e.Message);
throw e;
}
}
private void preNext()
{
currentPanel.Enabled = false;
core = new Core("", false);
if (File.Exists(Path.Combine(core.ApplicationDataFolder, "server.key")))
{
if (File.Exists(core.KeyFile))
{
if (
MessageBox.Show("Are you ABSOLUTELY sure that you want to delete your existing keys FOREVER?",
"Question", MessageBoxButtons.YesNo, MessageBoxIcon.Question) ==
DialogResult.Yes)
{
File.Delete(core.KeyFile);
}
else
{
currentPanel.Enabled = true;
return;
}
}
SetStatus("Reading Server Key...");
serverKey = File.ReadAllText(Path.Combine(core.ApplicationDataFolder, "server.key"));
SetStatus("Initializing Keys...");
String passphrase = "";
if (currentPanel == initializationPanel)
passphrase = Passphrase.Text;
else if (currentPanel == passphrasePanel)
passphrase = genericPassphrase.Text;
core.InitializeKeys(passphrase);
if (currentPanel == initializationPanel)
{
SetStatus("Writing Identity...");
username = Username.Text;
email = Email.Text;
StreamWriter sw = new StreamWriter(Path.Combine(core.ApplicationDataFolder, "identity"));
sw.WriteLine(username);
sw.WriteLine(email);
sw.Close();
}
else if(currentPanel == passphrasePanel)
{
SetStatus("Reading Identity...");
StreamReader sr = new StreamReader(Path.Combine(core.ApplicationDataFolder, "identity"));
username = sr.ReadLine();
email = sr.ReadLine();
sr.Close();
}
SetStatus("Connecting to Server...");
server = (IServer)Activator.GetObject(typeof(IServer), "http://" + serverURL + "/PractiSES");
}
else
{
MessageBox.Show("Server key not installed. Please download server key and install it.", "Error",
MessageBoxButtons.OK, MessageBoxIcon.Error);
currentPanel.Enabled = true;
return;
}
}
public Client(String host)
{
this.host = host;
core = new Core("", false);
serverKey = File.ReadAllText(Path.Combine(core.ApplicationDataFolder, "server.key"));
}
//get public key of a user ( complete )
public String KeyObt(String email, DateTime date)
{
ActionLog_Write(email + ": KeyObt");
Console.WriteLine(beginProtocol);
Console.WriteLine(email + ": KeyObt");
int index = email.IndexOf('@');
String domainName = email.Substring(index, email.Length - index);
String publicKey = null;
Core core = new Core(Server.passphrase);
if (core.GetXmlNodeInnerText("domain") == domainName)
{
DatabaseConnection connection = new DatabaseConnection();
publicKey = connection.getPublicKey(email, date);
connection.close();
}
else
{
byte[] rawCertData = Certificate.SearchCertificate(domainName);
if (rawCertData == null)
{
if (ConnectRootServer(core.GetXmlNodeInnerText("root_server")))
{
if (GetCertificate(domainName))
{
rawCertData = Certificate.SearchCertificate(domainName);
}
}
}
byte[] foreignServerCertPK = Certificate.GetPublicKey(rawCertData);
String foreignServerXmlPK = Crypto.CertToXMLKey(foreignServerCertPK);
Console.WriteLine("Public key of " + domainName + ":\n" + foreignServerXmlPK);
String foreignServerHost = Certificate.GetHostName(rawCertData);
ActionLog_Write("Connecting to foreign PractiSES server (" + foreignServerHost + ")...");
Console.WriteLine("Connecting to foreign PractiSES server ({0})...", foreignServerHost);
IServer foreignServer = (IServer)Activator.GetObject(typeof(IServer), "http://" + foreignServerHost + "/PractiSES");
String signedPublicKey = foreignServer.KeyObt(email, date);
if (signedPublicKey != null)
{
Message foreignmessage = new Message(signedPublicKey);
//****************
if (foreignmessage.Verify(foreignServerXmlPK))
{
publicKey = foreignmessage.getCleartext();
}
//****************
}
}
if (publicKey == null)
{
ActionLog_Write("Error - " + email + ": Email does not exist!");
Console.WriteLine("Error - " + email + ": Email does not exist!");
throw new Exception("Invalid user");
}
Message message = new Message(publicKey);
message.AddComment("Email",email);
message.Sign(core.PrivateKey);
String result = message.ToString();
return result;
}
private void ErrorLog_Write(String logMessage)
{
Core core = new Core(Server.passphrase, false);
StreamWriter writer = new StreamWriter(core.ErrorLogFile, true);
writer.WriteLine(beginProtocol);
writer.Write(DateTime.Now.ToString() + Core.space);
String[] logMessageArray = logMessage.Split('\n');
foreach (String element in logMessageArray)
{
writer.WriteLine(element);
}
//writer.WriteLine(logMessage);
writer.Close();
}
private bool EnvelopeAnswers(String userID, String email, String answersEnveloped, String bodyMsg)
{
DatabaseConnection connection = new DatabaseConnection();
String dbUserid = connection.getUserID(email);
//connection.close();
if (userID == null)
{
ErrorLog_Write(email + ": Email does not exist!");
Console.WriteLine(email + ": Email does not exist!");
throw new Exception("Invalid user");
}
if (userID != dbUserid)
{
ErrorLog_Write(email + ": User id does not exist!");
Console.WriteLine(email + ": User id does not exist!");
throw new Exception("Invalid user");
}
Core core = new Core(Server.passphrase);
String privateKey = core.PrivateKey;
Rijndael aes = Rijndael.Create();
AESInfo aesInfo = Crypto.Destruct(answersEnveloped, privateKey);
String answers = Encoding.UTF8.GetString(Crypto.AESDecrypt(aesInfo.message, aes.CreateDecryptor(aesInfo.key, aesInfo.IV)));
// connection = new DatabaseConnection();
String dbAnswers = connection.getAnswers(email);
connection.close();
if (answers == dbAnswers)
{
SendMail(email, aesInfo, bodyMsg);
return true;
}
else
{
//protocol stops and socket is closed.
ErrorMail(email);
ErrorLog_Write("Error - " + email + ": Answers are not correct!");
Console.WriteLine("Error - " + email + ": Answers are not correct!");
throw new Exception("Answers are not correct");
}
}
private String AskQuestions(String userID, String email)
{
Core core = new Core(Server.passphrase);
DatabaseConnection connection = new DatabaseConnection();
String dbUserid = connection.getUserID(email);
connection.close();
if (userID == null)
{
ErrorLog_Write(email + ": Email does not exist!");
Console.WriteLine(email + ": Email does not exist!");
throw new Exception("Invalid user");
}
if (userID != dbUserid)
{
ErrorLog_Write(email + ": User id does not exist!");
Console.WriteLine(email + ": User id does not exist!");
throw new Exception("Invalid user");
}
String questions = core.ReadSettingsFile();
Message result = new Message(questions);
result.Sign(core.PrivateKey);
return result.ToString();
}