public Message(string fileName)
{
_mode = ConstructorMode.FileName;
YearlySettings ys = YearlySettings.Open(fileName);
_settings = ys.Today;
Wiring.Current = _settings.ParentSettings.Wiring;
_machine = new Machine(_settings);
MessageKey = RandomUtil.GetRandomAlpha(5);
_fileName = fileName;
}
public string Decipher(string value)
{
CipherText = value;
string key;
if (_mode == ConstructorMode.FileName || _mode == ConstructorMode.Id)
{
YearlySettings ys;
if (_mode == ConstructorMode.Id)
{
ys = YearlySettings.ReadFromDb(_id);
}
else
{
ys = YearlySettings.Open(_fileName);
}
string indicator = CipherText.Split(CipherText.Where(c => char.IsWhiteSpace(c)).Distinct().ToArray(), StringSplitOptions.RemoveEmptyEntries)[0];
Settings s = ys[indicator];
Wiring.Current = s.ParentSettings.Wiring;
}
string result = FormatDecryptInput(value, out key);
MessageKey = key;
string expandedKey = string.Concat(key, _settings.StartPosition.Substring(5, 3));
_machine.Settings = _settings.StartPosition;
string trueKey = _machine.Encipher(expandedKey);
_machine.Settings = trueKey;
result = _machine.Decipher(result);
PlainText = FormatDecryptOutput(result).Trim();
return(PlainText);
}