/// <summary>
/// Encrypts or decrypts a string with the given key (rotor positions) and formats
/// the output according to the settings
/// </summary>
/// <param name="rotor1Pos">Position of rotor 1 (fastest)</param>
/// <param name="rotor2Pos">Position of rotor 2 (middle)</param>
/// <param name="rotor3Pos">Position of rotor 3 (slowest)</param>
/// <param name="rotor4Pos">Position of rotor 4 (extra rotor for M4)</param>
/// <param name="text">The text for en/decryption. This string may contain
/// arbitrary characters, which will be dealt with according to the settings given</param>
/// <returns>The encrypted/decrypted string</returns>
private string FormattedEncrypt(int rotor1Pos, int rotor2Pos, int rotor3Pos, int rotor4Pos, string text)
{
String input = preFormatInput(text);
enigmaPresentationFrame.ChangeStatus(isrunning, enigmaPresentationFrame.EnigmaPresentation.IsVisible);
if (Presentation.IsVisible && enigmaPresentationFrame.EnigmaPresentation.PresentationDisabled.DisabledBoolProperty)
{
String output = core.Encrypt(rotor1Pos, rotor2Pos, rotor3Pos, rotor4Pos, input);
enigmaPresentationFrame.EnigmaPresentation.output = output;
if (enigmaPresentationFrame.EnigmaPresentation.checkReady())
{
enigmaPresentationFrame.EnigmaPresentation.setinput(input);
}
else
{
LogMessage("Presentation Error!", NotificationLevel.Error);
}
//myPresentation.playClick(null, EventArgs.Empty);
//return postFormatOutput(output);
return("");
}
else
{
return(postFormatOutput(core.Encrypt(rotor1Pos, rotor2Pos, rotor3Pos, rotor4Pos, input)));
}
}
/// <summary>
/// This method performs a trial encryption with the given rotor positions (i.e. the key)
/// If the trial encryption results in a better result as before encountered, the current settings will
/// remembered in analysisCandidates-List.
/// </summary>
/// <param name="rotor1Pos">Integer value for rotor 1 position (values range from 0 to 25)</param>
/// <param name="rotor2Pos">Integer value for rotor 2 position (values range from 0 to 25)</param>
/// <param name="rotor3Pos">Integer value for rotor 3 position (values range from 0 to 25)</param>
/// <param name="text">The ciphertext</param>
/// <returns>The result of encrypting/decrypting the ciphertext with the given key</returns>
private string checkKey(int rotor1Pos, int rotor2Pos, int rotor3Pos, string text)
{
string result = core.Encrypt(rotor1Pos, rotor2Pos, rotor3Pos, 0, text);
double newScore = calculateScore(result, settings.KeySearchMethod);
if (analysisCandidates.Count >= maxAnalysisEntries)
{
// List is full, check if we need to remove one
if (newScore > analysisCandidates[0].Score)
{
double currentMax = analysisCandidates[analysisCandidates.Count - 1].Score;
analysisConfigSettings csetting = new analysisConfigSettings();
csetting.Score = newScore;
csetting.Rotor1 = core.Rotor1;
csetting.Rotor2 = core.Rotor2;
csetting.Rotor3 = core.Rotor3;
csetting.Ring1 = core.Ring1;
csetting.Ring2 = core.Ring2;
csetting.Ring3 = core.Ring3;
csetting.PlugBoard = core.Plugboard;
csetting.Key = settings.Alphabet[rotor3Pos].ToString() + settings.Alphabet[rotor2Pos].ToString() + settings.Alphabet[rotor1Pos].ToString();
analysisCandidates.Add(csetting);
analysisCandidates.Sort();
// remove the smallest one
analysisCandidates.RemoveAt(0);
if (newScore > currentMax)
{
// new best option
string status = String.Format("ANALYSIS: ==> Found better rotor settings: {0},{1},{2}; {3},{4},{5}; Key: {6}; I.C.={7} <==",
(rotorEnum)csetting.Rotor3, (rotorEnum)csetting.Rotor2, (rotorEnum)csetting.Rotor1,
csetting.Ring3.ToString("00"), csetting.Ring2.ToString("00"), csetting.Ring1.ToString("00"),
csetting.Key, newScore.ToString());
pluginFacade.LogMessage(status, NotificationLevel.Info);
printBestCandidates();
// fire the event, so someting becomes visible..
if (OnIntermediateResult != null)
{
OnIntermediateResult(this, new IntermediateResultEventArgs()
{
Result = result
});
}
}
}
}
else
{
//there is room left, hence add the element
analysisConfigSettings csetting = new analysisConfigSettings();
csetting.Score = newScore;
csetting.Rotor1 = core.Rotor1;
csetting.Rotor2 = core.Rotor2;
csetting.Rotor3 = core.Rotor3;
csetting.Ring1 = core.Ring1;
csetting.Ring2 = core.Ring2;
csetting.Ring3 = core.Ring3;
csetting.PlugBoard = core.Plugboard;
csetting.Key = settings.Alphabet[rotor3Pos].ToString() + settings.Alphabet[rotor2Pos].ToString() + settings.Alphabet[rotor1Pos].ToString();
analysisCandidates.Add(csetting);
analysisCandidates.Sort();
if (analysisCandidates.Count == maxAnalysisEntries)
{
printBestCandidates();
// current best option
analysisConfigSettings bestOption = analysisCandidates[analysisCandidates.Count - 1];
string status = String.Format("ANALYSIS: Best candidates is filled. Best option so far: {0},{1},{2}; Key: {3}; I.C.={4}",
(rotorEnum)bestOption.Rotor3, (rotorEnum)bestOption.Rotor2, (rotorEnum)bestOption.Rotor1, bestOption.Key, bestOption.Score.ToString());
pluginFacade.LogMessage(status, NotificationLevel.Debug);
// fire the event, so someting becomes visible..
if (OnIntermediateResult != null)
{
OnIntermediateResult(this, new IntermediateResultEventArgs()
{
Result = result
});
}
}
}
return(result);
}