def test_unsigned_announcement(self):
"""
An incorrectly signed announcement is not delivered to subscribers.
"""
private_key, public_key = ed25519.create_signing_keypair()
public_key_str = ed25519.string_from_verifying_key(public_key)
ic = IntroducerClient(
Tub(),
"pb://",
u"fake_nick",
"0.0.0",
"1.2.3",
(0, u"i am a nonce"),
FilePath(self.mktemp()),
)
received = {}
ic.subscribe_to("good-stuff", partial(setitem, received))
# Deliver a good message to prove our test code is valid.
ann = {"service-name": "good-stuff", "payload": "hello"}
ann_t = sign_to_foolscap(ann, private_key)
ic.got_announcements([ann_t])
self.assertEqual(
{public_key_str[len("pub-"):]: ann},
received,
)
received.clear()
# Now deliver one without a valid signature and observe that it isn't
# delivered to the subscriber.
ann = {"service-name": "good-stuff", "payload": "bad stuff"}
(msg, sig, key) = sign_to_foolscap(ann, private_key)
# Drop a base32 word from the middle of the key to invalidate the
# signature.
sig_a = bytearray(sig)
sig_a[20:22] = []
sig = bytes(sig_a)
ann_t = (msg, sig, key)
ic.got_announcements([ann_t])
# The received announcements dict should remain empty because we
# should not receive the announcement with the invalid signature.
self.assertEqual(
{},
received,
)
def test_unsigned_announcement(self):
ed25519.verifying_key_from_string(b"pub-v0-wodst6ly4f7i7akt2nxizsmmy2rlmer6apltl56zctn67wfyu5tq")
mock_tub = Mock()
ic = IntroducerClient(
mock_tub,
u"pb://",
u"fake_nick",
"0.0.0",
"1.2.3",
(0, u"i am a nonce"),
"invalid",
)
self.assertEqual(0, ic._debug_counts["inbound_announcement"])
ic.got_announcements([
("message", "v0-aaaaaaa", "v0-wodst6ly4f7i7akt2nxizsmmy2rlmer6apltl56zctn67wfyu5tq")
])
# we should have rejected this announcement due to a bad signature
self.assertEqual(0, ic._debug_counts["inbound_announcement"])