public static ThinRotor CreateRotorGamma()
{
int[] mapping = FactoryBase.ConvertMapping(ROTOR_GAMMA);
var result = new ThinRotor(mapping, 0);
return(result);
}
static void Main(string[] args)
{
var reflector = ReflectorFactory.CreateReflectorB();
var thinReflector = ReflectorFactory.CreateThinReflectorB();
ThinRotor thinRotor = RotorFactory.CreateRotorBeta();
Rotor slowRotor = RotorFactory.CreateRotorI();
Rotor middleRotor = RotorFactory.CreateRotorII();
Rotor fastRotor = RotorFactory.CreateRotorIII();
var spindle = new Spindle(reflector, slowRotor, middleRotor, fastRotor);
//var spindle = new Spindle(thinReflector, thinRotor, slowRotor, middleRotor, fastRotor);
// Ringstellung.
thinRotor.Offset = ToI('A');
slowRotor.Offset = ToI('A');
middleRotor.Offset = ToI('A');
fastRotor.Offset = ToI('A');
const char thinRotorPosition = 'A';
const char slowRotorPosition = 'A';
const char middleRotorPosition = 'A';
const char fastRotorPosition = 'A';
// Initial positions.
thinRotor.Position = ToI(thinRotorPosition);
slowRotor.Position = ToI(slowRotorPosition);
middleRotor.Position = ToI(middleRotorPosition);
fastRotor.Position = ToI(fastRotorPosition);
// Note: Enigma can only encrypt/decrypt the 26 letters of the alphabet.
// (because of this all others: spaces, quotes, commas etc. are ignored)
string plain = "The quick brown fox jumps over the lazy dog.";
var plugs = new Dictionary <int, int>
{
//{ ToI('A'), ToI('B') },
//{ ToI('C'), ToI('D') },
//{ ToI('E'), ToI('F') },
//{ ToI('G'), ToI('H') },
//{ ToI('I'), ToI('J') },
//{ ToI('K'), ToI('L') },
//{ ToI('M'), ToI('N') },
//{ ToI('O'), ToI('P') },
//{ ToI('Q'), ToI('R') },
//{ ToI('S'), ToI('T') },
//{ ToI('U'), ToI('V') },
//{ ToI('W'), ToI('X') },
//{ ToI('Y'), ToI('Z') },
};
var plugboard = new Plugboard(spindle, plugs);
string encrypted = String.Empty;
Console.WriteLine("Encrypted:");
// Encrypt.
foreach (char c in plain)
{
int input = ToI(c);
if ((input < 0) || (input > 25))
{
// We cannot process this char.
continue;
}
var output = plugboard.Get(input);
var ch = Convert.ToChar('A' + output);
encrypted += ch;
Console.Write(ch);
Console.Write(' ');
}
Console.WriteLine();
Console.WriteLine();
Console.WriteLine("Decrypted:");
// Reset rotor positions.
thinRotor.Position = ToI(thinRotorPosition);
slowRotor.Position = ToI(slowRotorPosition);
middleRotor.Position = ToI(middleRotorPosition);
fastRotor.Position = ToI(fastRotorPosition);
// Decrypt.
foreach (char c in encrypted)
{
int input = ToI(c);
var output = plugboard.Get(input);
var ch = Convert.ToChar('A' + output);
Console.Write(ch);
Console.Write(' ');
}
Console.ReadKey();
}
