public void LetchworthEnigmaTestsB()
{
// | | | |
// Plaintext "crib" A T T A C K A T D A W N A T T A C K A T D A W N
// Ciphertext W I F K B G Z L H N I M K Q R M B V B Z S R E E
// Message position 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
// Upper drum setting Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z
// Middle drum setting Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z
// Lower drum setting A B C D E F G H I J K L M N O P Q R S T U V W X
// Menu A->Z Z->T T->R R->A
// 7
// a - z
// 22 | | 20
// R - T
// 15
// validate input produces output
EnigmaM3 e = new EnigmaM3(new Scrambler3(Reflector.ReflectorB(), Rotor.RotorI(Letters.A, Letters.J), Rotor.RotorII(Letters.A, Letters.K), Rotor.RotorIII(Letters.A, Letters.L)), new Plugboard(new Dictionary <Letters, Letters>()));
string plainText = "ATTACKATDAWNATTACKATDAWN";
string cypherText = e.GetOutput(plainText);
Assert.That(cypherText, Is.EqualTo("WIFKBGZLHNIMKQRMBVBZSREE"));
// set up l1 at offset 7/G
Scrambler3 s1 = new Scrambler3(Reflector.ReflectorB(), Rotor.RotorI(Letters.A, Letters.Z), Rotor.RotorII(Letters.A, Letters.Z), Rotor.RotorIII(Letters.A, Letters.G));
LetchworthEnigma l1 = new LetchworthEnigma(s1);
// set up l2 at offset 20/T
Scrambler3 s2 = new Scrambler3(Reflector.ReflectorB(), Rotor.RotorI(Letters.A, Letters.Z), Rotor.RotorII(Letters.A, Letters.Z), Rotor.RotorIII(Letters.A, Letters.T));
LetchworthEnigma l2 = new LetchworthEnigma(s2);
// set up l3 at offset 15/O
Scrambler3 s3 = new Scrambler3(Reflector.ReflectorB(), Rotor.RotorI(Letters.A, Letters.Z), Rotor.RotorII(Letters.A, Letters.Z), Rotor.RotorIII(Letters.A, Letters.O));
LetchworthEnigma l3 = new LetchworthEnigma(s3);
// set up l4 at offset 22/V
Scrambler3 s4 = new Scrambler3(Reflector.ReflectorB(), Rotor.RotorI(Letters.A, Letters.Z), Rotor.RotorII(Letters.A, Letters.Z), Rotor.RotorIII(Letters.A, Letters.V));
LetchworthEnigma l4 = new LetchworthEnigma(s4);
Scrambler3 s = new Scrambler3(Reflector.ReflectorB(), Rotor.RotorI(Letters.A, Letters.Z), Rotor.RotorII(Letters.A, Letters.Z), Rotor.RotorIII(Letters.A, Letters.Z));
LetchworthEnigma l = new LetchworthEnigma(s);
bool found = false;
// check all combinations with relative offsets
for (int i = 0; i < (26 * 25 * 26); i++)
{
Letters o1 = l1.GetOutput(Letters.A);
Letters o2 = l2.GetOutput(Letters.Z);
Letters o3 = l3.GetOutput(Letters.T);
Letters o4 = l4.GetOutput(Letters.R);
l.GetOutput(Letters.A); // input/output doesn't matter
if (o1 == Letters.Z && o2 == Letters.T && o3 == Letters.R && o4 == Letters.A)
{
found = true;
}
}
;
// TODO: get initial settings from startup settings
// run another letchworthEnigma starting at initial settings? tick it over at same rate
Assert.That(found, Is.True);
}
public void LetchworthEnigmaTests()
{
// | | |
// Plaintext "crib" A T T A C K A T D A W N
// Ciphertext W A Z X L E C C X B U P
// Message position 1 2 3 4 5 6 7 8 9 10 11 12
// Upper drum setting Z Z Z Z Z Z Z Z Z Z Z Z
// Middle drum setting Z Z Z Z Z Z Z Z Z Z Z Z
// Lower drum setting A B C D E F G H I J K L
// Menu ATC
// 2
// A - T
// 7 \ / 8
// C
// validate input produces output
EnigmaM3 e = new EnigmaM3(new Scrambler3(Reflector.ReflectorB(), Rotor.RotorI(Letters.A, Letters.Z), Rotor.RotorII(Letters.A, Letters.Z), Rotor.RotorIII(Letters.A, Letters.A)), new Plugboard(new Dictionary <Letters, Letters>()));
string plainText = "ATTACKATDAWN";
string cypherText = e.GetOutput(plainText);
Assert.That(cypherText, Is.EqualTo("WAZXLECCXBUP"));
// set up l1 at offset A/1 (B/2)
Scrambler3 s1 = new Scrambler3(Reflector.ReflectorB(), Rotor.RotorI(Letters.A, Letters.Z), Rotor.RotorII(Letters.A, Letters.Z), Rotor.RotorIII(Letters.A, Letters.B));
LetchworthEnigma l1 = new LetchworthEnigma(s1);
// set up l2 at offset F/6 (G/7)
Scrambler3 s2 = new Scrambler3(Reflector.ReflectorB(), Rotor.RotorI(Letters.A, Letters.Z), Rotor.RotorII(Letters.A, Letters.Z), Rotor.RotorIII(Letters.A, Letters.G));
LetchworthEnigma l2 = new LetchworthEnigma(s2);
// set up l3 at offset G/7 (H/8)
Scrambler3 s3 = new Scrambler3(Reflector.ReflectorB(), Rotor.RotorI(Letters.A, Letters.Z), Rotor.RotorII(Letters.A, Letters.Z), Rotor.RotorIII(Letters.A, Letters.H));
LetchworthEnigma l3 = new LetchworthEnigma(s3);
Scrambler3 s = new Scrambler3(Reflector.ReflectorB(), Rotor.RotorI(Letters.A, Letters.Z), Rotor.RotorII(Letters.A, Letters.Z), Rotor.RotorIII(Letters.A, Letters.Z));
LetchworthEnigma l = new LetchworthEnigma(s);
bool found = false;
// check all combinations with relative offsets
for (int i = 0; i < (26 * 25 * 26); i++)
{
Letters o1 = l1.GetOutput(Letters.T);
Letters o2 = l2.GetOutput(Letters.A);
Letters o3 = l3.GetOutput(Letters.T);
l.GetOutput(Letters.A); // input/output doesn't matter
if (o1 == Letters.A && o2 == Letters.C && o3 == Letters.C)
{
found = true;
}
}
;
// TODO: get initial settings from startup settings
// run another letchworthEnigma starting at initial settings? tick it over at same rate
Assert.That(found, Is.True);
}