public static void TestUnwrapMasterKeyAndIV256WithNonzeroRandomNumbers()
{
TypeMap.Register.Singleton <IRandomGenerator>(() => new FakeRandomGenerator());
IDerivedKey keyEncryptingKey = new V2DerivedKey(new Passphrase("secret"), new Salt(256), 100, 256);
V2KeyWrapHeaderBlock header = new V2KeyWrapHeaderBlock(new V2Aes256CryptoFactory(), keyEncryptingKey, 125);
SymmetricKey key = header.MasterKey;
Assert.That(key.GetBytes(), Is.EquivalentTo(ByteSequence(key.GetBytes()[0], key.Size / 8)));
SymmetricIV iv = header.MasterIV;
Assert.That(iv.GetBytes(), Is.EquivalentTo(ByteSequence(iv.GetBytes()[0], iv.Length)));
}
public static void TestMethods()
{
SymmetricIV zeroIV = SymmetricIV.Zero128;
Assert.That(zeroIV.GetBytes(), Is.EquivalentTo(new byte[16]), "The IV 'zero' should consist of all zeros.");
SymmetricIV iv = new SymmetricIV(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 SymmetricIV(128);
Assert.That(iv.GetBytes(), Is.Not.EquivalentTo(new byte[16]), "A random iv will in practice never be all zeros.");
}
public static void TestUnwrapMasterKeyAndIV256WithZeroRandomNumbers()
{
var mock = new Mock <IRandomGenerator>();
mock.Setup <byte[]>(x => x.Generate(It.IsAny <int>())).Returns <int>(v => new byte[v]);
TypeMap.Register.Singleton <IRandomGenerator>(() => mock.Object);
IDerivedKey keyEncryptingKey = new V2DerivedKey(new Passphrase("secret"), new Salt(256), 100, 256);
V2KeyWrapHeaderBlock header = new V2KeyWrapHeaderBlock(new V2Aes256CryptoFactory(), keyEncryptingKey, 250);
SymmetricKey key = header.MasterKey;
Assert.That(key.GetBytes(), Is.EquivalentTo(new byte[32]));
SymmetricIV iv = header.MasterIV;
Assert.That(iv.GetBytes(), Is.EquivalentTo(new byte[16]));
}
