public void Hill_CipherTest()
{
string msg = "HELLOWORLD";
Cipher cipher = new Hill_Cipher(msg, "CDFH");
Assert.IsNotNull(cipher);
cipher = null;
Assert.IsNull(cipher);
cipher = new Hill_Cipher(msg, "CDFH");
Assert.IsNotNull(cipher);
// Check conversion with 2x2 matrix
cipher.Message = cipher.Encrypt();
string actual = cipher.Decrypt();
Assert.AreEqual(msg, actual, true);
cipher.Message = "Hello World I am William";
string expected = "HELLOWORLDIAMWILLIAM";
cipher.Message = cipher.Encrypt();
Console.WriteLine(cipher.Message);
actual = cipher.Decrypt();
Assert.AreEqual(expected, actual, true);
// Check conversion with 3x3 matrix
/*msg = "Hello Will the hill cipher now works!";
* cipher = new Hill_Cipher(msg, "BAAABAAAB");
* cipher.Message = cipher.Encrypt();
* string actual = cipher.Decrypt();
* expected = "hellowillthehillciphernowworks";
* Assert.AreEqual(expected, actual, true);*/
}
public void Is_Key_ValidTest()
{
// 2x2 Matrix
Cipher cipher = new Hill_Cipher("DCODEZ", "CDFH");
Assert.IsTrue(cipher.Is_Key_Valid());
// 3x3 Matrix
/*cipher = new Hill_Cipher("DCODEZ", "GYBNQKURP");
* Assert.IsTrue(cipher.Is_Key_Valid());*/
// False
cipher = new Hill_Cipher("DCODEZ", "ACDFHWDE");
Assert.IsFalse(cipher.Is_Key_Valid());
// Checks after runnning encryption
try
{
cipher = new Hill_Cipher("DCODEZ", "ABCD");
cipher.Encrypt();
Assert.Fail();
}
catch (Exception e)
{
Console.WriteLine(e.StackTrace);
}
}
public void EncryptTest()
{
// Testing 2x2 matrix
Cipher cipher = new Hill_Cipher("DCODEZ", "CDFH");
string expected = cipher.Encrypt();
string actual = "MDLNFN";
Assert.AreEqual(expected, actual);
// Testing 3x3 matrix
/*cipher = new Hill_Cipher("ACT", "GYBNQKURP");
* actual = cipher.Encrypt();
* expected = "POH";
* Assert.AreEqual(expected, actual);*/
}