public static void TestInvalidArguments()
{
AesKey key = new AesKey();
AesIV iv = new AesIV();
Assert.Throws <ArgumentNullException>(() =>
{
if (new AesCrypto(null) == null)
{
}
});
Assert.Throws <ArgumentNullException>(() =>
{
if (new AesCrypto(null, iv, CipherMode.CBC, PaddingMode.None) == null)
{
}
});
Assert.Throws <ArgumentNullException>(() =>
{
if (new AesCrypto(key, null, CipherMode.CBC, PaddingMode.None) == null)
{
}
});
Assert.DoesNotThrow(() =>
{
if (new AesCrypto(key, iv, CipherMode.CBC, PaddingMode.None) == null)
{
}
});
}
public static void TestObjectDisposed()
{
AesKey key = new AesKey();
AesIV iv = new AesIV();
AesCrypto crypto = new AesCrypto(key, iv, CipherMode.CBC, PaddingMode.None);
crypto.Dispose();
Assert.Throws <ObjectDisposedException>(() =>
{
crypto.Decrypt(new byte[16]);
});
Assert.Throws <ObjectDisposedException>(() =>
{
crypto.Encrypt(new byte[16]);
});
Assert.Throws <ObjectDisposedException>(() =>
{
crypto.CreateDecryptingTransform();
});
Assert.Throws <ObjectDisposedException>(() =>
{
crypto.CreateEncryptingTransform();
});
}
public static void TestMethods()
{
AesIV zeroIV = AesIV.Zero;
Assert.That(zeroIV.GetBytes(), Is.EquivalentTo(new byte[16]), "The IV 'zero' should consist of all zeros.");
AesIV iv = new AesIV(new byte[16] {
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16
});
Assert.That(iv.GetBytes(), Is.EquivalentTo(new byte[16] {
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16
}), "An IV specified should consist of just those bytes.");
iv = new AesIV();
Assert.That(iv.GetBytes(), Is.Not.EquivalentTo(new byte[16]), "A random iv will in practice never be all zeros.");
}
public static void TestInvalidArguments()
{
AesIV iv = null;
Assert.Throws <ArgumentNullException>(() =>
{
iv = new AesIV(null);
});
Assert.Throws <InternalErrorException>(() =>
{
iv = new AesIV(new byte[0]);
});
Assert.Throws <InternalErrorException>(() =>
{
iv = new AesIV(new byte[32]);
});
// Use the instance to avoid FxCop errors.
Object.Equals(iv, null);
}