private void EncryptButton_Click(object sender, RoutedEventArgs e)
{
if (BaseStateField.IsMaskCompleted && CheckRegisterState(BaseStateField.Text) &&
BaseContentField.Text.Trim() != string.Empty)
{
LFSRCipher cipher = new LFSRCipher(Convert.ToInt32(BaseStateField.Text.Substring(2), 2));
long length = BaseContentField.Text.Length / 2;
cipher.CountKey(length);
string result = string.Empty;
string key = string.Empty;
for (long i = 0; i < length; i++)
{
byte b = Convert.ToByte(BaseContentField.Text.Substring((int)(i * 2), 2), 16);
key += Convert.ToString(cipher.Key[i], 2);
string buff = Convert.ToString(b ^ cipher.Key[i], 16);
while (buff.Length < 2)
{
buff = buff.Insert(0, "0");
}
result += buff;
}
KeyField.Text = key;
ResultField.Text = result;
}
else
{
Console.WriteLine("Error");
}
}
private void DecryptButton_Click(object sender, RoutedEventArgs e)
{
if (BaseStateField.IsMaskCompleted && CheckRegisterState(BaseStateField.Text) &&
BaseContentField.Text.Trim() != string.Empty)
{
LFSRCipher cipher = new LFSRCipher(Convert.ToInt32(BaseStateField.Text.Substring(2), 2));
long length = BaseContentField.Text.Length / 2;
cipher.CountKey(length);
string result = string.Empty;
string key = string.Empty;
for (long i = 0; i < length; i++)
{
byte b = Convert.ToByte(BaseContentField.Text.Substring((int)(i * 2), 2), 16);
key += Convert.ToString(cipher.Key[i], 2);
string buff = Convert.ToString(b ^ cipher.Key[i], 16);
while (buff.Length < 2)
{
buff = buff.Insert(0, "0");
}
result += buff;
}
KeyField.Text = key;
ResultField.Text = result;
if (MessageBox.Show("Сохранить результат как файл?", "Сохранить?", MessageBoxButton.YesNo) ==
MessageBoxResult.Yes)
{
SaveFileDialog saveFileDialog = new SaveFileDialog();
if (saveFileDialog.ShowDialog() == true)
{
using (FileStream fileStream = new FileStream(saveFileDialog.FileName,
FileMode.Create, FileAccess.Write))
{
for (int i = 0; i < length; i++)
{
fileStream.WriteByte(Convert.ToByte(result.Substring(i * 2, 2), 16));
}
}
}
}
}
else
{
Console.WriteLine("Error");
}
}