private void DecryptButton_Click(object sender, RoutedEventArgs e)
{
if (ReceivedMessagesListView.SelectedItems.Count < 1)
{
MessageBox.Show("U have to select a message first!", "Warning!", MessageBoxButton.OK,
MessageBoxImage.Information);
}
else if (ReceivedMessagesListView.SelectedItems.Count > 1)
{
MessageBox.Show("U can only read one message!", "Warning!", MessageBoxButton.OK,
MessageBoxImage.Information);
}
else
{
MessageTextBlock.Visibility = Visibility.Visible;
this.Height = 600;
Message msg = (Message)ReceivedMessagesListView.SelectedItem;
var fromUserPuK = msg.From.PuK;
var currUserPvk = currUser.PvK;
var file1 = msg.File1;
var file2 = msg.File2;
var file3 = msg.File3;
var IV = msg.IV;
var key = RSACrypto.DecryptBytes(file2, currUserPvk);
MessageTextBlock.Text = "\n\n########AES KEY DECRYPT ########\n\n";
UnicodeEncoding _encoder = new UnicodeEncoding();
MessageTextBlock.Text += _encoder.GetString(key);
var message = AESCrypto.DecryptStringFromBytes(file1, key, IV);
MessageTextBlock.Text += "\n\n######## MESSAGE ########\n\n";
MessageTextBlock.Text += message;
var oldHash = RSACrypto.DecryptBytes(file3, currUserPvk);
string strOldHash = Encoding.UTF8.GetString(oldHash);
MessageTextBlock.Text += "\n\n######## Decrypted hash ########\n\n";
MessageTextBlock.Text += strOldHash;
if (BCrypt.CheckPassword(message, strOldHash))
{
MessageTextBlock.Text += "\n\n######## HASHES ARE EQUAL! ########\n\n";
}
else
{
MessageTextBlock.Text += "\n\n######## HASHES ARE NOT EQUAL! ########\n\n";
}
}
}