static void Main(string[] args)
{
Rotor rL = new Rotor(FixedMechanicRotor.ROTOR_II); //II has notch F
Rotor rM = new Rotor(FixedMechanicRotor.ROTOR_IV); //IV has notch K
Rotor rR = new Rotor(FixedMechanicRotor.ROTOR_V); //V has notch A
//Following WW2 Convention, it is Left-Mid-Right e.g. II IV V
Rotor[] rotors = { rL, rM, rR };
Reflector re = new Reflector(FixedMechanicReflector.REFLECTOR_B);
Plugboard plug = new Plugboard(new String[] {
"AV", "BS", "CG", "DL", "FU", "HZ", "IN", "KM", "OW", "RX"}); //Barbarosa
WindowSetting initialSetting = new WindowSetting('B', 'L', 'A');
RingSetting ringPositions = new RingSetting(2, 21, 12);
//an example of naming hassle because Enigma is both namespace and class
Enigma.representation.Enigma enigma = new Enigma.representation.Enigma(rotors, re, plug, ringPositions, initialSetting);
string myfile = "C:\\Users\\ToshiW\\Documents\\Visual Studio 2012\\Projects\\Enigma\\Enigma\\Resources\\BarbarosaCiphertext.txt";
string input = Utility.FileToString(myfile);
//Console.WriteLine(readResult);
//Console.ReadLine();
//Let Enigma do its thing
string result = enigma.encryptString(input);
Console.WriteLine(result);
Console.ReadLine();
}
public Enigma(Rotor[] rots, Reflector re, Plugboard plug, RingSetting rings, WindowSetting initWindow)
{
//Following WW2 Convention, it is specified Left-Mid-Right
this.rotors = rots;
this.rotorKnockers = new char[] { rotors[LEFT].getKnocker(), rotors[MID].getKnocker(), rotors[RIGHT].getKnocker() };
this.reflector = re;
this.plugboard = plug;
this.windowSetting = initWindow;
this.ringSetting = rings;
}
public Enigma(Rotor[] rots, Reflector re, Plugboard plug, RingSetting rings, WindowSetting initWindow)
{
//Following WW2 Convention, it is specified Left-Mid-Right
this.rotors = rots;
this.rotorKnockers = new char[] { rotors[LEFT].getKnocker(), rotors[MID].getKnocker(), rotors[RIGHT].getKnocker() };
this.reflector = re;
this.plugboard = plug;
this.windowSetting = initWindow;
this.ringSetting = rings;
}
/**
* Get the appropriate offset (always > 0) of the internal rotor core
* with respect to global 'A' position
* This offset is influenced by
* i) the ring setting (which stays the same for a given ciphertext, and
* ii) the window value (which updates every time the enigma ticks)
* @param ringSetting
* @param windowSetting
* @param slot
* @return
*/
public static int GetOffsetRotorInternal(RingSetting ringSetting, WindowSetting windowSetting, int slot)
{
//for easy intuition, we call the global 'A' position the sea level
int dispRingAboveSea; //displacement of Ring with respect to global 'A' position
int dispRotorInternalWrtRing;
int dispRotorInternalAboveSea; //always > 0, expressed in mod26
dispRingAboveSea = 'A' - windowSetting.getWindowValue(slot); //if window shows 'C', disp = -2
dispRotorInternalWrtRing = ringSetting.ringOffset(slot); //offset = 4 means internal A is locked to ring's E
dispRotorInternalAboveSea = (dispRingAboveSea + dispRotorInternalWrtRing + 26) % 26;
return dispRotorInternalAboveSea;
}
