public void TestFailedVerification()
{
SymmetricKey key = new SymmetricKey(Resolve.RandomGenerator.Generate(32));
SymmetricIV iv = new SymmetricIV(Resolve.RandomGenerator.Generate(16));
V2AlgorithmVerifierEncryptedHeaderBlock headerBlock = new V2AlgorithmVerifierEncryptedHeaderBlock(new V2AesCrypto(key, iv, 0));
Assert.That(headerBlock.IsVerified, Is.True, "A properly instantiated header should always have IsVerified as true");
byte[] dataBlock = headerBlock.GetDataBlockBytes();
V2AlgorithmVerifierEncryptedHeaderBlock newBlock = new V2AlgorithmVerifierEncryptedHeaderBlock(dataBlock);
SymmetricKey key128 = new SymmetricKey(Resolve.RandomGenerator.Generate(16));
newBlock.HeaderCrypto = new V2AesCrypto(key128, iv, 0);
Assert.That(newBlock.IsVerified, Is.False, "Wrong algorithm, should not verify.");
SymmetricKey wrongKey256 = new SymmetricKey(Resolve.RandomGenerator.Generate(32));
newBlock.HeaderCrypto = new V2AesCrypto(wrongKey256, iv, 0);
Assert.That(newBlock.IsVerified, Is.False, "Wrong key, should not verify.");
SymmetricIV wrongIv = new SymmetricIV(Resolve.RandomGenerator.Generate(16));
newBlock.HeaderCrypto = new V2AesCrypto(key, wrongIv, 0);
Assert.That(newBlock.IsVerified, Is.False, "Wrong IV, should not verify.");
newBlock.HeaderCrypto = new V2AesCrypto(key, iv, 256);
Assert.That(newBlock.IsVerified, Is.False, "Wrong key stream index, should not verify.");
newBlock.HeaderCrypto = new V2AesCrypto(key, iv, 0);
Assert.That(newBlock.IsVerified, Is.True, "Everything is as it should, so it should verify.");
}
public void TestOkVerification()
{
SymmetricKey key = new SymmetricKey(Resolve.RandomGenerator.Generate(32));
SymmetricIV iv = new SymmetricIV(Resolve.RandomGenerator.Generate(16));
V2AlgorithmVerifierEncryptedHeaderBlock headerBlock = new V2AlgorithmVerifierEncryptedHeaderBlock(new V2AesCrypto(key, iv, 0));
Assert.That(headerBlock.IsVerified, Is.True, "A properly instantiated header should always have IsVerified as true");
byte[] dataBlock = headerBlock.GetDataBlockBytes();
V2AlgorithmVerifierEncryptedHeaderBlock newBlock = new V2AlgorithmVerifierEncryptedHeaderBlock(dataBlock);
newBlock.HeaderCrypto = new V2AesCrypto(key, iv, 0);
Assert.That(newBlock.IsVerified, Is.True, "It's a new block with the same key, should be ok.");
}
