private ICipher GetCipher()
{
if (!encryptCheckBox.Checked)
{
return(null);
}
byte[] keyBytes = Encoding.UTF8.GetBytes(keyTextBox.Text);
var key = KeyExtender.Extend(keyBytes, _padding);
switch (encryptComboBox.Text)
{
case nameof(AES):
return(new AES(key));
case nameof(Twofish):
return(new Twofish(key));
case nameof(Serpent):
return(new Serpent(key));
default:
return(null);
}
}
private ICipher GetCipher(int id, byte[] key)
{
key = KeyExtender.Extend(key, new PKCS7Padding()); // to chyba powinien encryptor robić
if (id == CipherId.AES)
{
return(new AES(key));
}
if (id == CipherId.Serpent)
{
return(new Serpent(key));
}
if (id == CipherId.Twofish)
{
return(new Twofish(key));
}
throw new ArgumentOutOfRangeException();
}
public void Extend_Provides10ByteKey_Extended()
{
byte[] key = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
CollectionAssert.AreEqual(new byte[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 6, 6, 6, 6, 6, 6 }, KeyExtender.Extend(key, new PKCS7Padding()));
}
public void Extend_ProvidesCompleteKey_Extended()
{
CollectionAssert.AreEqual(new byte[16], KeyExtender.Extend(new byte[16], MockRepository.GenerateMock <IPadding>()));
CollectionAssert.AreEqual(new byte[24], KeyExtender.Extend(new byte[24], MockRepository.GenerateMock <IPadding>()));
CollectionAssert.AreEqual(new byte[32], KeyExtender.Extend(new byte[32], MockRepository.GenerateMock <IPadding>()));
}
