public void SetEncryptionKeyReturnsCorrectTextForOneRotor()
{
const string plaintext = "HELLO";
Rotor[] rotors = new Rotor[1];
rotors[0] = new Rotor(AlphabetUtils.AlphabetString, "rotor");
Enigma enigma = new Enigma(rotors);
enigma.SetEncryptionKey("A");
Assert.AreEqual(AlphabetUtils.AlphabetString, enigma.SubmitString(AlphabetUtils.AlphabetString));
Assert.AreEqual(AlphabetUtils.ReverseAlphabetString, enigma.SubmitString(AlphabetUtils.ReverseAlphabetString));
Assert.AreEqual(plaintext, enigma.SubmitString(plaintext));
}
public void SetEncryptionKeyReturnsCorrectTextForOneRotorAndOneDeflectorAndOneLetterInput()
{
const string plaintext = "A";
Rotor[] rotors = new Rotor[2];
rotors[0] = new Rotor(AlphabetUtils.AlphabetString, "rotor");
rotors[1] = new Rotor(AlphabetUtils.ReverseAlphabetString, "reflector");
Enigma enigma = new Enigma(rotors);
enigma.SetEncryptionKey("BB");
string ciphertext = enigma.SubmitString(plaintext);
Assert.AreEqual(plaintext, enigma.SubmitString(ciphertext), "Encryption symmetry is not ensured.");
}
public void SymmetryIsEnsuredWithOneFixedRotorAndReflector()
{
const string plaintext = "HELLO";
Rotor[] rotors = new Rotor[2];
rotors[0] = new Rotor(AlphabetUtils.AlphabetString, "rotor");
rotors[1] = new Rotor(AlphabetUtils.ReverseAlphabetString, "reflector");
Enigma enigma = new Enigma(rotors);
enigma.SetEncryptionKey("BB");
string ciphertext = enigma.SubmitString(plaintext);
Assert.AreEqual(plaintext, enigma.SubmitString(ciphertext), "Encryption symmetry is not ensured.");
}