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//
// Unit tests for AesCryptoServiceProvider
//
// Author:
// Sebastien Pouliot <sebastien@xamarin.com>
//
// Copyright (C) 2013 Xamarin Inc (http://www.xamarin.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
#if !MOBILE
using System;
using System.Security.Cryptography;
using NUnit.Framework;
namespace MonoTests.System.Security.Cryptography {
[TestFixture]
public class AesCryptoServiceProviderTest {
[Test]
[ExpectedException (typeof (CryptographicException))]
public void CTS_NotAllowed ()
{
// this check is normally (e.g. RijndaelManaged) done later
using (var aes = new AesCryptoServiceProvider ()) {
aes.Mode = CipherMode.CTS;
}
}
[Test]
public void CBC_Allowed ()
{
using (var aes = new AesCryptoServiceProvider ()) {
aes.Mode = CipherMode.CBC;
}
}
[Test]
public void ECB_Allowed ()
{
using (var aes = new AesCryptoServiceProvider ()) {
aes.Mode = CipherMode.ECB;
}
}
[Test]
public void OFB_Allowed ()
{
// this not supported by AesManaged
using (var aes = new AesCryptoServiceProvider ()) {
aes.Mode = CipherMode.OFB;
// FIXME: check is really implemented (or if the check is only done later, like RjindaelManaged)
}
}
[Test]
public void CFB_Allowed ()
{
using (var aes = new AesCryptoServiceProvider ()) {
// AesManaged does not support CFB at all
aes.Mode = CipherMode.CFB;
Assert.AreEqual (8, aes.FeedbackSize, "FeedbackSize (default)");
int block_size = aes.BlockSize / 8;
for (int i = 8; i <= 64; i += 8) {
aes.FeedbackSize = i;
using (ICryptoTransform t = aes.CreateEncryptor ()) {
// RjindaelManaged transform block size are different!
Assert.AreEqual (block_size, t.InputBlockSize, "InputBlockSize CFB{0}", i);
Assert.AreEqual (block_size, t.OutputBlockSize, "OutputBlockSize CFB{0}", i);
}
}
}
}
[Test]
[ExpectedException (typeof (CryptographicException))]
public void CFB_TooSmall ()
{
using (var aes = new AesCryptoServiceProvider ()) {
aes.Mode = CipherMode.CFB;
aes.FeedbackSize = 0;
}
}
[Test]
[ExpectedException (typeof (CryptographicException))]
public void CFB_TooBig ()
{
using (var aes = new AesCryptoServiceProvider ()) {
aes.Mode = CipherMode.CFB;
aes.FeedbackSize = 72;
Assert.AreEqual (72, aes.FeedbackSize, "FeedbackSize");
// we can't set it but can't use it
aes.CreateEncryptor (aes.Key, aes.IV);
}
}
}
}
#endif
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