public void EncryptWithNullTest()
{
const string plaintext = "abbaba";
var cipher = new SimpleSubstitutionCipher(new Alphabet("ab"));
cipher.Encrypt(plaintext, null);
}
public void EncryptNullTest()
{
var key = new SimpleSubstitutionKey(("ab", "ba"));
var cipher = new SimpleSubstitutionCipher(new Alphabet("ab"));
cipher.Encrypt(null, key);
}
public void EncryptWrongKeyTest1()
{
var key = new SimpleSubstitutionKey(("ab", "ba"));
const string plaintext = "aacabc";
var cipher = new SimpleSubstitutionCipher(new Alphabet("abc"));
cipher.Encrypt(plaintext, key);
}
public void EncryptTest()
{
var key = new SimpleSubstitutionKey(("ab", "ba"));
const string plaintext = "abbaba";
const string ciphertext = "baabab";
var cipher = new SimpleSubstitutionCipher(new Alphabet("ab"));
Assert.AreEqual(ciphertext, cipher.Encrypt(plaintext, key));
}
public void DecryptWrongKeyTest3()
{
var key = new SimpleSubstitutionKey(("abcd", "badc"));
const string ciphertext = "aacabc";
var cipher = new SimpleSubstitutionCipher(new Alphabet("abc"));
cipher.Decrypt(ciphertext, key);
}
public void AbsorbtionTest()
{
var encKey = new SimpleSubstitutionKey(("abc", "bca"));
var decKey = KeyGenerator.GetSimpleSubstitutionDecryptionKey(encKey);
const string plaintext = "abcbabca";
var cipher = new SimpleSubstitutionCipher(new Alphabet("abc"));
Assert.AreEqual(
plaintext,
cipher.Decrypt(cipher.Encrypt(plaintext, encKey), decKey));
}
public void EncryptWrongTextTest()
{
var key = new SimpleSubstitutionKey(("ab", "ba"));
const string plaintext = "aacabc";
var cipher = new SimpleSubstitutionCipher(new Alphabet("ab"))
{
IsStrict = false
};
Assert.AreEqual("bbcbac", cipher.Encrypt(plaintext, key));
}
public void DecryptWrongTextStrictTest()
{
var key = new SimpleSubstitutionKey(("ab", "ba"));
const string ciphertext = "aacabc";
var cipher = new SimpleSubstitutionCipher(new Alphabet("ab"))
{
IsStrict = true
};
cipher.Decrypt(ciphertext, key);
}
public string Encrypt(string plainText)
{
string cipherText = plainText;
CaesarCipher caesarCipher = new CaesarCipher();
caesarCipher.SetKey(CAESAR_CIPHER_KEY);
cipherText = caesarCipher.Encrypt(cipherText);
AffineCipher affineCipher = new AffineCipher();
affineCipher.SetKeys(new int[] { AFFINE_CIPHER_KEY_A, AFFINE_CIPHER_KEY_B });
cipherText = affineCipher.Encrypt(cipherText);
SimpleSubstitutionCipher simpleSubstitutionCipher = new SimpleSubstitutionCipher();
simpleSubstitutionCipher.SetKey(SIMPLE_SUBSTITUTION_CIPHER_KEY);
cipherText = simpleSubstitutionCipher.Encrypt(cipherText);
return(cipherText);
}
private void ExecuteSimpleSubstitutionSipher()
{
var cipher = new SimpleSubstitutionCipher(this.model.Alphabet)
{
IsStrict = this.model.IsStrict
};
if (this.model.Action == "Зашифрувати")
{
this.Encrypt(
cipher,
new SimpleSubstitutionKey(
(this.model.SSCFrom, this.model.SSCTo)));
}
else
{
this.Decrypt(
cipher,
KeyGenerator.GetSimpleSubstitutionDecryptionKey(
new SimpleSubstitutionKey(
(this.model.SSCFrom, this.model.SSCTo))));
}
}
