private void btnDelete_Click(object sender, EventArgs e)
{
string username = txtUsername.Text;
string password = txtPassword.Text;
bool userExists = false;
string salt = "";
string hashedPassword = "";
string hashControl = "";
try
{
//user.login-file openen en lijn inlezen
input = File.OpenText(path + "/user.login");
line = input.ReadLine();
char separator = ',';
string[] words;
//salt en hash bepalen van users in bestand
while (line != null && !userExists)
{
lineCounter++;
words = line.Split(separator);
if (words[0] == username)
{
userExists = true;
salt = words[1];
hashedPassword = words[2];
byte[] passwordBytes = Encoding.UTF8.GetBytes(password);
byte[] saltBytes = Encoding.UTF8.GetBytes(salt);
hashControl = PasswordStorage.HashPassword(passwordBytes, saltBytes, 50000); //Maakt nieuwe hash om te controleren
}
else
{
line = input.ReadLine();
}
input.Close();
}
}
catch (IOException)
{
MessageBox.Show("Close the 'user.login'-file before logging in.", "'user.login'-file is open.");
return;
}
if (!userExists)
{
lbl1.Text = "This user does not exist.";
lbl2.Text = "";
return;
}
if (hashedPassword != hashControl)
{
lbl1.Text = "The password is incorrect.";
lbl2.Text = "";
return;
}
else
{
DeleteUser(username);
FormRegister regForm = new FormRegister(lf);
regForm.Show();
this.Hide();
}
}
//NIEUWE USER MAKEN
private void CreateUser()
{
bool containsSpace = false;
try
{
writer = File.AppendText(path + "/user.login");
//Username controleren en in user.login zetten
for (int i = 0; i < username.Length; i++)
{
if (username[i] == ' ')
{
lblNotification.Text = "Username can not contain a space.";
containsSpace = true;
return;
}
}
//Password controleren
for (int i = 0; i < password.Length; i++)
{
if (password[i] == ' ')
{
lblNotification.Text = "Password can not contain a space.";
containsSpace = true;
return;
}
}
if (!containsSpace)
{
writer.Write(username + ",");
}
//Salt maken en in user.login zetten
string salt = PasswordStorage.GenerateSalt();
writer.Write(salt + ",");
byte[] saltBytes = Encoding.UTF8.GetBytes(salt);
byte[] passwordBytes = Encoding.UTF8.GetBytes(password);
//Password + salt hashen en in user.login zetten
string hashedPassword = PasswordStorage.HashPassword(passwordBytes, saltBytes, 50000);
writer.WriteLine(hashedPassword);
loginForm.userCreated = true;
//Public en private key van deze gebruiker genereren
RSAWithRSAParameterKey rsaParams = new RSAWithRSAParameterKey(username);
rsaParams.GeneratePrivatePublicKeys();
CreateFolder(); //Folders voor de gebruiker maken
}
catch (IOException)
{
MessageBox.Show("Close the user.login-file before registering.", "Close user.login-file.");
return;
}
finally
{
writer.Close();
if (!containsSpace)
{
this.Close();
}
}
}
//INLOGGEN DOOR KLIK OP LOGIN-BUTTON
private void btnLogin_Click_1(object sender, EventArgs e)
{
userExists = false; //Terug op false zetten voor het geval het nog op true staat
username = txtUsername.Text;
password = txtPassword.Text;
userExists = false;
string hashControl = "";
//Zoeken naar gebruikersnaam in login-file (om vervolgens in te loggen)
try
{
//user.login-file openen en eerste lijn lezen
reader = File.OpenText(path + "/user.login");
string line = reader.ReadLine();
char separator = ',';
string[] words;
while (line != null && !userExists)
{
words = line.Split(separator);
//Username-check
if (words[0] == username)
{
userExists = true;
//Salt en byte opslaan en omzetten naar byte-array
salt = words[1];
byte[] saltBytes = Encoding.UTF8.GetBytes(salt);
hashedPassword = words[2];
byte[] passwordBytes = Encoding.UTF8.GetBytes(password);
hashControl = PasswordStorage.HashPassword(passwordBytes, saltBytes, 50000); //Maakt nieuwe hash om te controleren
//of deze overeenkomt met die wat er werkelijk staat
}
else
{
line = reader.ReadLine();
}
}
}
catch (IOException)
{
MessageBox.Show("Close the user.login-file before logging in.", "Close user.login-file.");
return;
}
finally
{
reader.Close();
}
//labelopmaak aanpassen
lblNotification.ForeColor = Color.Red;
lblNotification.Font = new Font(lblNotification.Font, FontStyle.Bold);
if (!userExists)
{
lblNotification.Text = "This user does not exist.";
return;
}
if (hashedPassword != hashControl)
{
lblNotification.Text = "The password is incorrect.";
return;
}
else
{
MainWindow mainWindow = new MainWindow(this);
mainWindow.Show();
this.Hide();
}
}
