public void TestMessageKeyLimits()
{
SessionRecord aliceSessionRecord = new SessionRecord();
SessionRecord bobSessionRecord = new SessionRecord();
InitializeSessionsV3(aliceSessionRecord.getSessionState(), bobSessionRecord.getSessionState());
SignalProtocolStore aliceStore = new TestInMemorySignalProtocolStore();
SignalProtocolStore bobStore = new TestInMemorySignalProtocolStore();
aliceStore.StoreSession(new SignalProtocolAddress("+14159999999", 1), aliceSessionRecord);
bobStore.StoreSession(new SignalProtocolAddress("+14158888888", 1), bobSessionRecord);
SessionCipher aliceCipher = new SessionCipher(aliceStore, new SignalProtocolAddress("+14159999999", 1));
SessionCipher bobCipher = new SessionCipher(bobStore, new SignalProtocolAddress("+14158888888", 1));
List <CiphertextMessage> inflight = new List <CiphertextMessage>();
for (int i = 0; i < 2010; i++)
{
inflight.Add(aliceCipher.encrypt(Encoding.ASCII.GetBytes("you've never been so hungry, you've never been so cold")));
}
bobCipher.decrypt(new SignalMessage(inflight[1000].serialize()));
bobCipher.decrypt(new SignalMessage(inflight[inflight.Count - 1].serialize()));
try
{
bobCipher.decrypt(new SignalMessage(inflight[0].serialize()));
throw new Exception("Should have failed!");
}
catch (DuplicateMessageException)
{
// good
}
}
private void RunInteraction(SessionRecord aliceSessionRecord, SessionRecord bobSessionRecord)
{
SignalProtocolStore aliceStore = new TestInMemorySignalProtocolStore();
SignalProtocolStore bobStore = new TestInMemorySignalProtocolStore();
aliceStore.StoreSession(new SignalProtocolAddress("+14159999999", 1), aliceSessionRecord);
bobStore.StoreSession(new SignalProtocolAddress("+14158888888", 1), bobSessionRecord);
SessionCipher aliceCipher = new SessionCipher(aliceStore, new SignalProtocolAddress("+14159999999", 1));
SessionCipher bobCipher = new SessionCipher(bobStore, new SignalProtocolAddress("+14158888888", 1));
byte[] alicePlaintext = Encoding.ASCII.GetBytes("This is a plaintext message.");
CiphertextMessage message = aliceCipher.encrypt(alicePlaintext);
byte[] bobPlaintext = bobCipher.decrypt(new SignalMessage(message.serialize()));
CollectionAssert.AreEqual(alicePlaintext, bobPlaintext);
byte[] bobReply = Encoding.ASCII.GetBytes("This is a message from Bob.");
CiphertextMessage reply = bobCipher.encrypt(bobReply);
byte[] receivedReply = aliceCipher.decrypt(new SignalMessage(reply.serialize()));
CollectionAssert.AreEqual(bobReply, receivedReply);
List <CiphertextMessage> aliceCiphertextMessages = new List <CiphertextMessage>();
List <byte[]> alicePlaintextMessages = new List <byte[]>();
for (int i = 0; i < 50; i++)
{
alicePlaintextMessages.Add(Encoding.ASCII.GetBytes("смерть за смерть " + i));
aliceCiphertextMessages.Add(aliceCipher.encrypt(Encoding.ASCII.GetBytes("смерть за смерть " + i)));
}
int seed = (int)DateTime.Now.Ticks;
Shuffle(aliceCiphertextMessages, new Random(seed));
Shuffle(alicePlaintextMessages, new Random(seed));
for (int i = 0; i < aliceCiphertextMessages.Count / 2; i++)
{
byte[] receivedPlaintext = bobCipher.decrypt(new SignalMessage(aliceCiphertextMessages[i].serialize()));
CollectionAssert.AreEqual(receivedPlaintext, alicePlaintextMessages[i]);
}
List <CiphertextMessage> bobCiphertextMessages = new List <CiphertextMessage>();
List <byte[]> bobPlaintextMessages = new List <byte[]>();
for (int i = 0; i < 20; i++)
{
bobPlaintextMessages.Add(Encoding.ASCII.GetBytes("смерть за смерть " + i));
bobCiphertextMessages.Add(bobCipher.encrypt(Encoding.ASCII.GetBytes("смерть за смерть " + i)));
}
seed = (int)DateTime.Now.Ticks;
Shuffle(bobCiphertextMessages, new Random(seed));
Shuffle(bobPlaintextMessages, new Random(seed));
for (int i = 0; i < bobCiphertextMessages.Count / 2; i++)
{
byte[] receivedPlaintext = aliceCipher.decrypt(new SignalMessage(bobCiphertextMessages[i].serialize()));
CollectionAssert.AreEqual(receivedPlaintext, bobPlaintextMessages[i]);
}
for (int i = aliceCiphertextMessages.Count / 2; i < aliceCiphertextMessages.Count; i++)
{
byte[] receivedPlaintext = bobCipher.decrypt(new SignalMessage(aliceCiphertextMessages[i].serialize()));
CollectionAssert.AreEqual(receivedPlaintext, alicePlaintextMessages[i]);
}
for (int i = bobCiphertextMessages.Count / 2; i < bobCiphertextMessages.Count; i++)
{
byte[] receivedPlaintext = aliceCipher.decrypt(new SignalMessage(bobCiphertextMessages[i].serialize()));
CollectionAssert.AreEqual(receivedPlaintext, bobPlaintextMessages[i]);
}
}