public void Decrypt_File_WhiteSpacePassword()
{
try
{
EncryptorImplementation Encryptor = new EncryptorImplementation(Mock.Of<IAESAlgorithm>(), Mock.Of<IHashAlgorithm>(), Mock.Of<IFile>());
Encryptor.Decrypt("TestInput", "TestOutput", "\t");
Assert.Fail("An ArgumentException was expected.");
}
catch(System.ArgumentException) { }
}
public void DecryptTest()
{
byte[] bytesToDecrypt = new byte[] { 1, 2, 3, 4, 5, 6 };
byte[] expectedDecryptedBytes = new byte[] { 2, 4, 6, 8, 10, 12 };
byte[] hashedPasswordBytes = new byte[] {
1, 2, 3, 4, 5, 6, 7, 8,
1, 2, 3, 4, 5, 6, 7, 7,
1, 2, 3, 4, 5, 6, 7, 6,
1, 2, 3, 4, 5, 6, 7, 5,
1, 2, 3, 4, 5, 6, 7, 4,
1, 2, 3, 4, 5, 6, 7, 3,
1, 2, 3, 4, 5, 6, 7, 2,
1, 2, 3, 4, 5, 6, 7, 1,
};
string password = "******";
System.Func<byte, byte> transformMethod = (a) =>
{
if(a >= 127)
return System.Byte.MaxValue;
return (byte)(a * 2);
};
MemoryStream streamToDecrypt = new MemoryStream(bytesToDecrypt);
MemoryStream outputStream = new MemoryStream();
Mock<IHashAlgorithm> hashMock = new Mock<IHashAlgorithm>();
Mock<IAESAlgorithm> aesMock = new Mock<IAESAlgorithm>();
DummyEncryptor transform = new DummyEncryptor(transformMethod, 16);
hashMock.Setup(a => a.ComputeHash(It.IsAny<byte[]>())).Returns(hashedPasswordBytes);
aesMock.Setup(a => a.CreateDecryptor(It.IsAny<byte[]>(), It.IsAny<byte[]>())).Returns(transform);
EncryptorImplementation Encryptor = new EncryptorImplementation(aesMock.Object, hashMock.Object, Mock.Of<IFile>());
Encryptor.Decrypt(streamToDecrypt, outputStream, password);
outputStream.Position = 0;
CollectionAssert.AreEqual(expectedDecryptedBytes, outputStream.ToArray());
}
public void DecryptTest_NullPassword()
{
try
{
var target = new EncryptorImplementation(Mock.Of<IAESAlgorithm>(), Mock.Of<IHashAlgorithm>(), Mock.Of<IFile>());
target.Decrypt(Mock.Of<System.IO.Stream>(), Mock.Of<System.IO.Stream>(), null);
Assert.Fail("An ArgumentException was expected.");
}
catch(System.ArgumentException) { }
}