private void SentMessage(string input)
{
byte[] encrypted;
ICryptoTransform encryptor = _symKeyAes.CreateEncryptor(_symKeyAes.Key, _symKeyAes.IV);
using (MemoryStream msEncrypt = new MemoryStream())
{
using (CryptoStream csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write))
{
using (StreamWriter swEncrypt = new StreamWriter(csEncrypt))
{
//Write all data to the stream.
swEncrypt.Write(input);
}
encrypted = msEncrypt.ToArray();
}
}
Message message = new Message();
message.Content = JsonConvert.SerializeObject(encrypted);
message.Iv = _symKeyAes.IV;
message.RecieverId = _targetUser.Id;
message.SenderId = _loggedInUser.Id;
message.TimeSend = DateTime.Now;
SuperChatContext context = new SuperChatContext();
context.Messages.Add(message);
context.SaveChanges();
InputTextbox.Text = "";
ListMessages(_loggedInUser, _targetUser);
}
private void LoadData()
{
SuperChatContext context = new SuperChatContext();
var loggedInUserKeyLijst = context.Keys.Where(key => key.User == _loggedInUser).ToList();
_chats = new List <Chat>();
foreach (var key in loggedInUserKeyLijst)
{
var chat = context.Chats.Find(key.ChatId);
_chats.Add(chat);
}
_otherUserInChat = new List <Key>();
foreach (var chat in _chats)
{
var sleutels = context.Keys.Where(key => key.ChatId == chat.Id);
var var = sleutels.First(key => key.UserId != _loggedInUser.Id);
_otherUserInChat.Add(var);
}
ChatToUsersListView.Items.Clear();
foreach (var key in _otherUserInChat)
{
ChatToUsersListView.Items.Add(context.Users.Find(key.UserId));
}
}
public NewChatWindow(User logedInUser, List <Key> otherUserInChat)
{
_logedInUser = logedInUser;
InitializeComponent();
_context = new SuperChatContext();
var users = _context.Users.Where(user => user != _logedInUser).ToList();
foreach (var key in otherUserInChat)
{
var currentUser = _context.Users.Find(key.UserId);
users.Remove(currentUser);
}
SelectedUserComboBox.ItemsSource = users;
}
private void ListMessages(User senderUser, User receiverUser)
{
SuperChatContext context = new SuperChatContext();
MessagesListView.Items.Clear();
var messageList = context.Messages
.Where(message => message.RecieverId == receiverUser.Id || message.RecieverId == senderUser.Id)
.Where(message => message.SenderId == receiverUser.Id || message.SenderId == senderUser.Id)
.OrderBy(message => message.TimeSend).ToList();
foreach (var message in messageList)
{
_symKeyAes.IV = message.Iv;
message.Content = SymmetricEncryption.DecryptStringFromBytes_Aes(JsonConvert.DeserializeObject <byte[]>(message.Content), _symKeyAes);
message.Content = context.Users.Find(message.SenderId).Name + ":\t" + message.Content;
MessagesListView.Items.Add(message);
}
}
private void Login()
{
SuperChatContext context = new SuperChatContext();
if (UsernameTextBox.Text == "" || PasswordPasswordBox.Password == "")
{
UsernameTextBox.BorderBrush = UsernameTextBox.Text == ""
? new SolidColorBrush(Colors.Red)
: new SolidColorBrush(Colors.DarkGray);
PasswordPasswordBox.BorderBrush = PasswordPasswordBox.Password == ""
? new SolidColorBrush(Colors.Red)
: new SolidColorBrush(Colors.DarkGray);
return;
}
User user = context.Users.First(u => u.Name == UsernameTextBox.Text.ToLower());
if (Hash.HashInput(PasswordPasswordBox.Password, user.Salt) != user.Password)
{
MessageBox.Show("foutieve inloggegevens");
UsernameTextBox.Text = "";
PasswordPasswordBox.Password = "";
return;
}
CspParameters cp = new CspParameters();
cp.KeyContainerName = "superChat" + user.Name;
var rsa = new RSACryptoServiceProvider(cp);
ChatListWindow window = new ChatListWindow(rsa, user);
window.Show();
Close();
}
public RegisterWindow()
{
context = new SuperChatContext();
InitializeComponent();
}
