public void TestSuccessfulExchange()
{
JPakeParticipant alice = CreateAlice();
JPakeParticipant bob = CreateBob();
ExchangeAfterRound2Creation exchange = RunExchangeUntilRound2Creation(alice, bob);
alice.ValidateRound2PayloadReceived(exchange.bobRound2Payload);
bob.ValidateRound2PayloadReceived(exchange.aliceRound2Payload);
BigInteger aliceKeyingMaterial = alice.CalculateKeyingMaterial();
BigInteger bobKeyingMaterial = bob.CalculateKeyingMaterial();
JPakeRound3Payload aliceRound3Payload = alice.CreateRound3PayloadToSend(aliceKeyingMaterial);
JPakeRound3Payload bobRound3Payload = bob.CreateRound3PayloadToSend(bobKeyingMaterial);
alice.ValidateRound3PayloadReceived(bobRound3Payload, aliceKeyingMaterial);
bob.ValidateRound3PayloadReceived(aliceRound3Payload, bobKeyingMaterial);
Assert.AreEqual(aliceKeyingMaterial, bobKeyingMaterial);
}
public void TestValidateRound2PayloadReceived()
{
// We're testing alice here. Bob is just used for help.
// should succeed
ExchangeAfterRound2Creation exchange1 = RunExchangeUntilRound2Creation(CreateAlice(), CreateBob());
exchange1.alice.ValidateRound2PayloadReceived(exchange1.bobRound2Payload);
// alice verified alice's payload
ExchangeAfterRound2Creation exchange2 = RunExchangeUntilRound2Creation(CreateAlice(), CreateBob());
try
{
exchange2.alice.ValidateRound2PayloadReceived(exchange2.aliceRound2Payload);
Fail("failed to throw on participant verifying own payload 2");
}
catch (CryptoException)
{
// expected
}
// wrong z
ExchangeAfterRound2Creation exchange3 = RunExchangeUntilRound2Creation(CreateAlice(), CreateBob());
ExchangeAfterRound2Creation exchange4 = RunExchangeUntilRound2Creation(CreateAlice(), CreateBob());
try
{
exchange3.alice.ValidateRound2PayloadReceived(exchange4.bobRound2Payload);
Fail("failed to throw on wrong z");
}
catch (CryptoException)
{
// expected
}
}
public void TestIncorrectPassword()
{
JPakeParticipant alice = CreateAlice();
JPakeParticipant bob = CreateBobWithWrongPassword();
ExchangeAfterRound2Creation exchange = RunExchangeUntilRound2Creation(alice, bob);
alice.ValidateRound2PayloadReceived(exchange.bobRound2Payload);
bob.ValidateRound2PayloadReceived(exchange.aliceRound2Payload);
BigInteger aliceKeyingMaterial = alice.CalculateKeyingMaterial();
BigInteger bobKeyingMaterial = bob.CalculateKeyingMaterial();
JPakeRound3Payload aliceRound3Payload = alice.CreateRound3PayloadToSend(aliceKeyingMaterial);
JPakeRound3Payload bobRound3Payload = bob.CreateRound3PayloadToSend(bobKeyingMaterial);
try
{
alice.ValidateRound3PayloadReceived(bobRound3Payload, aliceKeyingMaterial);
Fail("failed to throw exception on incorrect password");
}
catch (CryptoException)
{
// expected
}
try
{
bob.ValidateRound3PayloadReceived(aliceRound3Payload, bobKeyingMaterial);
Fail("failed to throw exception on incorrect password");
}
catch (CryptoException)
{
// expected
}
}