def test_badSignedPreKeySignature(self):
aliceStore = InMemoryAxolotlStore()
aliceSessionBuilder = SessionBuilder(aliceStore, aliceStore, aliceStore, aliceStore,
self.__class__.BOB_RECIPIENT_ID, 1)
bobIdentityKeyStore = InMemoryIdentityKeyStore()
bobPreKeyPair = Curve.generateKeyPair()
bobSignedPreKeyPair = Curve.generateKeyPair()
bobSignedPreKeySignature = Curve.calculateSignature(bobIdentityKeyStore.getIdentityKeyPair().getPrivateKey(),
bobSignedPreKeyPair.getPublicKey().serialize())
for i in range(0, len(bobSignedPreKeySignature) * 8):
modifiedSignature = bytearray(bobSignedPreKeySignature[:])
modifiedSignature[int(i/8)] ^= 0x01 << (i % 8)
bobPreKey = PreKeyBundle(bobIdentityKeyStore.getLocalRegistrationId(), 1,
31337, bobPreKeyPair.getPublicKey(),
22, bobSignedPreKeyPair.getPublicKey(), modifiedSignature,
bobIdentityKeyStore.getIdentityKeyPair().getPublicKey())
try:
aliceSessionBuilder.processPreKeyBundle(bobPreKey)
except Exception:
pass
#good
bobPreKey = PreKeyBundle(bobIdentityKeyStore.getLocalRegistrationId(), 1,
31337, bobPreKeyPair.getPublicKey(),
22, bobSignedPreKeyPair.getPublicKey(), bobSignedPreKeySignature,
bobIdentityKeyStore.getIdentityKeyPair().getPublicKey())
aliceSessionBuilder.processPreKeyBundle(bobPreKey)
def getSignature(self, signatureKey, serialized):
"""
:type signatureKey: ECPrivateKey
:type serialized: bytearray
"""
try:
return Curve.calculateSignature(signatureKey, serialized)
except InvalidKeyException as e:
raise AssertionError(e)
def test_basicPreKeyV3(self):
aliceStore = InMemoryAxolotlStore()
aliceSessionBuilder = SessionBuilder(aliceStore, aliceStore, aliceStore, aliceStore, self.__class__.BOB_RECIPIENT_ID, 1)
bobStore = InMemoryAxolotlStore()
bobPreKeyPair = Curve.generateKeyPair()
bobSignedPreKeyPair = Curve.generateKeyPair()
bobSignedPreKeySignature = Curve.calculateSignature(bobStore.getIdentityKeyPair().getPrivateKey(),
bobSignedPreKeyPair.getPublicKey().serialize())
bobPreKey = PreKeyBundle(bobStore.getLocalRegistrationId(), 1,
31337, bobPreKeyPair.getPublicKey(),
22, bobSignedPreKeyPair.getPublicKey(),
bobSignedPreKeySignature,
bobStore.getIdentityKeyPair().getPublicKey())
aliceSessionBuilder.processPreKeyBundle(bobPreKey)
self.assertTrue(aliceStore.containsSession(self.__class__.BOB_RECIPIENT_ID, 1))
self.assertTrue(aliceStore.loadSession(self.__class__.BOB_RECIPIENT_ID, 1).getSessionState().getSessionVersion() == 3)
originalMessage = "L'homme est condamné à être libre"
aliceSessionCipher = SessionCipher(aliceStore, aliceStore, aliceStore, aliceStore, self.__class__.BOB_RECIPIENT_ID, 1)
outgoingMessage = aliceSessionCipher.encrypt(originalMessage)
self.assertTrue(outgoingMessage.getType() == CiphertextMessage.PREKEY_TYPE)
incomingMessage = PreKeyWhisperMessage(serialized=outgoingMessage.serialize())
bobStore.storePreKey(31337, PreKeyRecord(bobPreKey.getPreKeyId(), bobPreKeyPair))
bobStore.storeSignedPreKey(22, SignedPreKeyRecord(22, int(time.time() * 1000), bobSignedPreKeyPair, bobSignedPreKeySignature))
bobSessionCipher = SessionCipher(bobStore, bobStore, bobStore, bobStore, self.__class__.ALICE_RECIPIENT_ID, 1)
plaintext = bobSessionCipher.decryptPkmsg(incomingMessage)
self.assertEqual(originalMessage, plaintext)
# @@TODO: in callback assertion
# self.assertFalse(bobStore.containsSession(self.__class__.ALICE_RECIPIENT_ID, 1))
self.assertTrue(bobStore.containsSession(self.__class__.ALICE_RECIPIENT_ID, 1))
self.assertTrue(bobStore.loadSession(self.__class__.ALICE_RECIPIENT_ID, 1).getSessionState().getSessionVersion() == 3)
self.assertTrue(bobStore.loadSession(self.__class__.ALICE_RECIPIENT_ID, 1).getSessionState().getAliceBaseKey() != None)
self.assertEqual(originalMessage, plaintext)
bobOutgoingMessage = bobSessionCipher.encrypt(originalMessage)
self.assertTrue(bobOutgoingMessage.getType() == CiphertextMessage.WHISPER_TYPE)
alicePlaintext = aliceSessionCipher.decryptMsg(WhisperMessage(serialized=bobOutgoingMessage.serialize()))
self.assertEqual(alicePlaintext, originalMessage)
self.runInteraction(aliceStore, bobStore)
aliceStore = InMemoryAxolotlStore()
aliceSessionBuilder = SessionBuilder(aliceStore, aliceStore, aliceStore, aliceStore, self.__class__.BOB_RECIPIENT_ID, 1)
aliceSessionCipher = SessionCipher(aliceStore, aliceStore, aliceStore, aliceStore, self.__class__.BOB_RECIPIENT_ID, 1)
bobPreKeyPair = Curve.generateKeyPair()
bobSignedPreKeyPair = Curve.generateKeyPair()
bobSignedPreKeySignature = Curve.calculateSignature(bobStore.getIdentityKeyPair().getPrivateKey(), bobSignedPreKeyPair.getPublicKey().serialize())
bobPreKey = PreKeyBundle(bobStore.getLocalRegistrationId(),
1, 31338, bobPreKeyPair.getPublicKey(),
23, bobSignedPreKeyPair.getPublicKey(), bobSignedPreKeySignature,
bobStore.getIdentityKeyPair().getPublicKey())
bobStore.storePreKey(31338, PreKeyRecord(bobPreKey.getPreKeyId(), bobPreKeyPair))
bobStore.storeSignedPreKey(23, SignedPreKeyRecord(23, int(time.time() * 1000), bobSignedPreKeyPair, bobSignedPreKeySignature))
aliceSessionBuilder.processPreKeyBundle(bobPreKey)
outgoingMessage = aliceSessionCipher.encrypt(originalMessage)
try:
plaintext = bobSessionCipher.decryptPkmsg(PreKeyWhisperMessage(serialized=outgoingMessage))
raise AssertionError("shouldn't be trusted!")
except Exception:
bobStore.saveIdentity(self.__class__.ALICE_RECIPIENT_ID, PreKeyWhisperMessage(serialized=outgoingMessage.serialize()).getIdentityKey())
plaintext = bobSessionCipher.decryptPkmsg(PreKeyWhisperMessage(serialized=outgoingMessage.serialize()))
self.assertEqual(plaintext, originalMessage)
bobPreKey = PreKeyBundle(bobStore.getLocalRegistrationId(), 1,
31337, Curve.generateKeyPair().getPublicKey(),
23, bobSignedPreKeyPair.getPublicKey(), bobSignedPreKeySignature,
aliceStore.getIdentityKeyPair().getPublicKey())
try:
aliceSessionBuilder.process(bobPreKey)
raise AssertionError("shouldn't be trusted!")
except Exception:
#good
pass
