Files
purple-electrumwallet/tests/test_onion_message.py
T
2026-04-01 09:07:36 +02:00

518 lines
26 KiB
Python

import asyncio
import io
import os
import time
import dataclasses
import logging
from functools import partial
from unittest.mock import Mock
from types import MappingProxyType
from aiorpcx import NetAddress
import electrum_ecc as ecc
from electrum_ecc import ECPrivkey
from electrum import SimpleConfig
from electrum.lnmsg import decode_msg, OnionWireSerializer
from electrum.lnonion import (
OnionHopsDataSingle, OnionPacket, process_onion_packet, get_bolt04_onion_key, encrypt_onionmsg_data_tlv,
get_shared_secrets_along_route, new_onion_packet, ONION_MESSAGE_LARGE_SIZE, HOPS_DATA_SIZE, InvalidPayloadSize,
encrypt_hops_recipient_data, blinding_privkey)
from electrum.crypto import get_ecdh, privkey_to_pubkey
from electrum.lntransport import LNPeerAddr
from electrum.lnutil import LnFeatures, Keypair, MIN_FINAL_CLTV_DELTA_ACCEPTED, REMOTE
from electrum.onion_message import (
create_blinded_path, OnionMessageManager, NoRouteFound, Timeout, get_blinded_paths_to_me,
)
from electrum.util import bfh, read_json_file, OldTaskGroup, get_asyncio_loop
from electrum.logging import console_stderr_handler
from . import ElectrumTestCase
from .test_lnpeer import TestPeer
TIME_STEP = 0.01 # run tests 100 x faster
OnionMessageManager.SLEEP_DELAY *= TIME_STEP
OnionMessageManager.REQUEST_REPLY_TIMEOUT *= TIME_STEP
OnionMessageManager.REQUEST_REPLY_RETRY_DELAY *= TIME_STEP
OnionMessageManager.FORWARD_RETRY_TIMEOUT *= TIME_STEP
OnionMessageManager.FORWARD_RETRY_DELAY *= TIME_STEP
# test vectors https://github.com/lightning/bolts/pull/759/files
path = os.path.join(os.path.dirname(__file__), 'blinded-onion-message-onion-test.json')
test_vectors = read_json_file(path)
ONION_MESSAGE_PACKET = bfh(test_vectors['onionmessage']['onion_message_packet'])
HOPS = test_vectors['generate']['hops']
ALICE_TLVS = HOPS[0]['tlvs']
BOB_TLVS = HOPS[1]['tlvs']
CAROL_TLVS = HOPS[2]['tlvs']
DAVE_TLVS = HOPS[3]['tlvs']
ALICE_PUBKEY = bfh(test_vectors['route']['first_node_id'])
BOB_PUBKEY = bfh(ALICE_TLVS['next_node_id'])
CAROL_PUBKEY = bfh(BOB_TLVS['next_node_id'])
DAVE_PUBKEY = bfh(CAROL_TLVS['next_node_id'])
BLINDING_SECRET = bfh(HOPS[0]['path_key_secret'])
BLINDING_OVERRIDE_SECRET = bfh(ALICE_TLVS['path_key_override_secret'])
SESSION_KEY = bfh(test_vectors['generate']['session_key'])
class TestOnionMessage(ElectrumTestCase):
def test_path_pubkeys_blinded_path_appended(self):
hop_shared_secrets1, blinded_node_ids1 = get_shared_secrets_along_route([ALICE_PUBKEY], BLINDING_SECRET)
hop_shared_secrets2, blinded_node_ids2 = get_shared_secrets_along_route([BOB_PUBKEY, CAROL_PUBKEY, DAVE_PUBKEY], BLINDING_OVERRIDE_SECRET)
hop_shared_secrets = hop_shared_secrets1 + hop_shared_secrets2
blinded_node_ids = blinded_node_ids1 + blinded_node_ids2
for i, ss in enumerate(hop_shared_secrets):
self.assertEqual(ss, bfh(HOPS[i]['ss']))
for i, ss in enumerate(blinded_node_ids):
self.assertEqual(ss, bfh(HOPS[i]['blinded_node_id']))
hops_data = [
OnionHopsDataSingle(
tlv_stream_name='onionmsg_tlv',
blind_fields={
'next_node_id': {'node_id': bfh(ALICE_TLVS['next_node_id'])},
'next_path_key_override': {'path_key': bfh(ALICE_TLVS['next_path_key_override'])},
},
),
OnionHopsDataSingle(
tlv_stream_name='onionmsg_tlv',
blind_fields={
'next_node_id': {'node_id': bfh(BOB_TLVS['next_node_id'])},
'unknown_tag_561': {'data': bfh(BOB_TLVS['unknown_tag_561'])},
},
),
OnionHopsDataSingle(
tlv_stream_name='onionmsg_tlv',
blind_fields={
'padding': {'padding': bfh(CAROL_TLVS['padding'])},
'next_node_id': {'node_id': bfh(CAROL_TLVS['next_node_id'])},
},
),
OnionHopsDataSingle(
tlv_stream_name='onionmsg_tlv',
payload={'message': {'text': bfh(test_vectors['onionmessage']['unknown_tag_1'])}},
blind_fields={
'padding': {'padding': bfh(DAVE_TLVS['padding'])},
'path_id': {'data': bfh(DAVE_TLVS['path_id'])},
'unknown_tag_65535': {'data': bfh(DAVE_TLVS['unknown_tag_65535'])},
},
)
]
encrypt_hops_recipient_data('onionmsg_tlv', hops_data, hop_shared_secrets)
packet = new_onion_packet(blinded_node_ids, SESSION_KEY, hops_data, onion_message=True)
self.assertEqual(packet.to_bytes(), ONION_MESSAGE_PACKET)
def test_onion_message_payload_size(self):
# Note: payload size is not _strictly_ limited to (1300+66, 32768+66), but Electrum only generates these sizes
# However, the spec allows for other payload sizes.
# https://github.com/lightning/bolts/blob/master/04-onion-routing.md
# "SHOULD set onion_message_packet len to 1366 or 32834."
hop_shared_secrets, blinded_node_ids = get_shared_secrets_along_route([DAVE_PUBKEY], SESSION_KEY)
def hops_data_for_message(message):
return [
OnionHopsDataSingle(
tlv_stream_name='onionmsg_tlv',
payload={'message': {'text': message.encode('utf-8')}},
blind_fields={
'path_id': {'data': bfh('deadbeefbadc0ffeedeadbeefbadc0ffeedeadbeefbadc0ffeedeadbeefbadc0')},
},
),
]
hops_data = hops_data_for_message('short_message') # fit in HOPS_DATA_SIZE
encrypt_hops_recipient_data('onionmsg_tlv', hops_data, hop_shared_secrets)
packet = new_onion_packet(blinded_node_ids, SESSION_KEY, hops_data, onion_message=True)
self.assertEqual(len(packet.to_bytes()), HOPS_DATA_SIZE + 66)
hops_data = hops_data_for_message('A' * HOPS_DATA_SIZE) # fit in ONION_MESSAGE_LARGE_SIZE
encrypt_hops_recipient_data('onionmsg_tlv', hops_data, hop_shared_secrets)
packet = new_onion_packet(blinded_node_ids, SESSION_KEY, hops_data, onion_message=True)
self.assertEqual(len(packet.to_bytes()), ONION_MESSAGE_LARGE_SIZE + 66)
hops_data = hops_data_for_message('A' * ONION_MESSAGE_LARGE_SIZE) # does not fit in ONION_MESSAGE_LARGE_SIZE
encrypt_hops_recipient_data('onionmsg_tlv', hops_data, hop_shared_secrets)
with self.assertRaises(InvalidPayloadSize):
new_onion_packet(blinded_node_ids, SESSION_KEY, hops_data, onion_message=True)
def test_decode_onion_message_packet(self):
op = OnionPacket.from_bytes(ONION_MESSAGE_PACKET)
self.assertEqual(op.hmac, bfh('8e7fc7590ff05a9e991de03f023d0aaf8688ed6170def5091c66576a424ac1cb'))
self.assertEqual(op.public_key, bfh('02531fe6068134503d2723133227c867ac8fa6c83c537e9a44c3c5bdbdcb1fe337'))
self.assertEqual(op.hops_data, bfh('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'))
def test_decode_onion_message(self):
msg = test_vectors['decrypt']['hops'][0]['onion_message']
msgtype, data = decode_msg(bfh(msg))
self.assertEqual(msgtype, 'onion_message')
self.assertEqual(data, {
'path_key': bfh(test_vectors['route']['first_path_key']),
'len': 1366,
'onion_message_packet': ONION_MESSAGE_PACKET,
})
def test_decrypt_onion_message(self):
o = OnionPacket.from_bytes(ONION_MESSAGE_PACKET)
our_privkey = bfh(test_vectors['decrypt']['hops'][0]['privkey'])
blinding = bfh(test_vectors['route']['first_path_key'])
shared_secret = get_ecdh(our_privkey, blinding)
b_hmac = get_bolt04_onion_key(b'blinded_node_id', shared_secret)
b_hmac_int = int.from_bytes(b_hmac, byteorder="big")
our_privkey_int = int.from_bytes(our_privkey, byteorder="big")
our_privkey_int = our_privkey_int * b_hmac_int % ecc.CURVE_ORDER
our_privkey = our_privkey_int.to_bytes(32, byteorder="big")
p = process_onion_packet(o, our_privkey, is_onion_message=True, tlv_stream_name='onionmsg_tlv')
self.assertEqual(p.hop_data.blind_fields, {})
self.assertEqual(p.hop_data.hmac, bfh('a5296325ba478ba1e1a9d1f30a2d5052b2e2889bbd64f72c72bc71d8817288a2'))
self.assertEqual(p.hop_data.payload, {'encrypted_recipient_data': {'encrypted_recipient_data': bfh('49531cf38d3280b7f4af6d6461a2b32e3df50acfd35176fc61422a1096eed4dfc3806f29bf74320f712a61c766e7f7caac0c42f86040125fbaeec0c7613202b206dbdd31fda56394367b66a711bfd7d5bedbe20bed1b')}})
self.assertEqual(p.hop_data.tlv_stream_name, 'onionmsg_tlv')
onion_message_bob = test_vectors['decrypt']['hops'][1]['onion_message']
msgtype, data = decode_msg(bfh(onion_message_bob))
self.assertEqual(msgtype, 'onion_message')
self.assertEqual(data, {
'path_key': bfh(ALICE_TLVS['next_path_key_override']),
'len': 1366,
'onion_message_packet': p.next_packet.to_bytes(),
})
def test_blinding_privkey(self):
a = blinding_privkey(bfh('4141414141414141414141414141414141414141414141414141414141414141'),
bfh('031b84c5567b126440995d3ed5aaba0565d71e1834604819ff9c17f5e9d5dd078f'))
self.assertEqual(a, bfh('7e959bf6bdd3a98caf26cbbee7b69678381d5fa2882c6c12eb2042c2367264b0'))
def test_create_blinded_path(self):
pubkey = ALICE_PUBKEY
session_key = bfh('3030303030303030303030303030303030303030303030303030303030303030') # typo?
final_recipient_data = {'path_id': {'data': bfh('0102')}}
rp = create_blinded_path(session_key, [pubkey], final_recipient_data)
self.assertEqual(pubkey, rp['first_node_id'])
self.assertEqual(bfh('022ed557f5ad336b31a49857e4e9664954ac33385aa20a93e2d64bfe7f08f51277'), rp['first_path_key'])
self.assertEqual(b"\x01", rp['num_hops'])
self.assertEqual([{
'blinded_node_id': bfh('031e5d91e6c417f6e8c16d1086db1887edef7be9334f5e744d04edb8da7507481e'),
'enclen': 20,
'encrypted_recipient_data': bfh('2dbaa54a819775aa0548ab85db68c5099e7b1180')
}], rp['path'])
# TODO: serialization test to test_lnmsg.py
with io.BytesIO() as blinded_path_fd:
OnionWireSerializer.write_field(
fd=blinded_path_fd,
field_type='blinded_path',
count=1,
value=rp)
blinded_path = blinded_path_fd.getvalue()
self.assertEqual(blinded_path, bfh('02eec7245d6b7d2ccb30380bfbe2a3648cd7a942653f5aa340edcea1f283686619022ed557f5ad336b31a49857e4e9664954ac33385aa20a93e2d64bfe7f08f5127701031e5d91e6c417f6e8c16d1086db1887edef7be9334f5e744d04edb8da7507481e00142dbaa54a819775aa0548ab85db68c5099e7b1180'))
def prepare_blinded_path_bob_to_dave(self):
final_recipient_data = {
'padding': {'padding': bfh(DAVE_TLVS['padding'])},
'path_id': {'data': bfh(DAVE_TLVS['path_id'])},
'unknown_tag_65535': {'data': bfh(DAVE_TLVS['unknown_tag_65535'])}
}
hop_extras = [
{'unknown_tag_561': {'data': bfh(BOB_TLVS['unknown_tag_561'])}},
{'padding': {'padding': bfh(CAROL_TLVS['padding'])}}
]
return create_blinded_path(BLINDING_OVERRIDE_SECRET, [BOB_PUBKEY, CAROL_PUBKEY, DAVE_PUBKEY], final_recipient_data, hop_extras=hop_extras)
def test_create_onionmessage_to_blinded_path_via_alice(self):
blinded_path_to_dave = self.prepare_blinded_path_bob_to_dave()
hop_shared_secrets, blinded_node_ids = get_shared_secrets_along_route([ALICE_PUBKEY], BLINDING_SECRET)
hops_data = [
OnionHopsDataSingle(
tlv_stream_name='onionmsg_tlv',
blind_fields={
'next_node_id': {'node_id': BOB_PUBKEY},
'next_path_key_override': {'path_key': bfh(ALICE_TLVS['next_path_key_override'])},
},
),
]
# encrypt encrypted_data_tlv here
for i in range(len(hops_data)):
encrypted_recipient_data = encrypt_onionmsg_data_tlv(shared_secret=hop_shared_secrets[i], **hops_data[i].blind_fields)
new_payload = dict(hops_data[i].payload)
new_payload['encrypted_recipient_data'] = {'encrypted_recipient_data': encrypted_recipient_data}
hops_data[i] = dataclasses.replace(hops_data[i], payload=new_payload)
blinded_path_blinded_ids = []
for i, x in enumerate(blinded_path_to_dave.get('path')):
blinded_path_blinded_ids.append(x.get('blinded_node_id'))
payload = {'encrypted_recipient_data': {'encrypted_recipient_data': x.get('encrypted_recipient_data')}}
if i == len(blinded_path_to_dave.get('path')) - 1:
# add final recipient payload
payload['message'] = {'text': bfh(test_vectors['onionmessage']['unknown_tag_1'])}
hops_data.append(
OnionHopsDataSingle(
tlv_stream_name='onionmsg_tlv',
payload=payload),
)
payment_path_pubkeys = blinded_node_ids + blinded_path_blinded_ids
hop_shared_secrets, _ = get_shared_secrets_along_route(payment_path_pubkeys, SESSION_KEY)
encrypt_hops_recipient_data('onionmsg_tlv', hops_data, hop_shared_secrets)
packet = new_onion_packet(payment_path_pubkeys, SESSION_KEY, hops_data, onion_message=True)
self.assertEqual(packet.to_bytes(), ONION_MESSAGE_PACKET)
class MockNetwork:
def __init__(self):
self.asyncio_loop = get_asyncio_loop()
self.taskgroup = OldTaskGroup()
self.config = SimpleConfig()
self.config.EXPERIMENTAL_LN_FORWARD_PAYMENTS = True
class MockPeer:
their_features = LnFeatures(LnFeatures.OPTION_ONION_MESSAGE_OPT)
def __init__(self, pubkey, on_send_message=None):
self.pubkey = pubkey
self.on_send_message = on_send_message
async def wait_one_htlc_switch_iteration(self, *args):
pass
def is_initialized(self):
return True
def send_message(self, *args, **kwargs):
if self.on_send_message:
self.on_send_message(*args, **kwargs)
class TestOnionMessageManager(ElectrumTestCase):
@classmethod
def setUpClass(cls):
super().setUpClass()
console_stderr_handler.setLevel(logging.DEBUG)
def setUp(self):
super().setUp()
def keypair(privkey: ECPrivkey):
priv = privkey.get_secret_bytes()
return Keypair(pubkey=privkey_to_pubkey(priv), privkey=priv)
self.alice = keypair(ECPrivkey(privkey_bytes=b'\x41'*32))
self.bob = keypair(ECPrivkey(privkey_bytes=b'\x42'*32))
self.carol = keypair(ECPrivkey(privkey_bytes=b'\x43'*32))
self.dave = keypair(ECPrivkey(privkey_bytes=b'\x44'*32))
self.eve = keypair(ECPrivkey(privkey_bytes=b'\x45'*32))
async def run_test1(self, t):
t1 = t.submit_send(
payload={'message': {'text': 'alice_timeout'.encode('utf-8')}},
node_id_or_blinded_path=self.alice.pubkey)
with self.assertRaises(Timeout):
await t1
async def run_test2(self, t):
t2 = t.submit_send(
payload={'message': {'text': 'bob_slow_timeout'.encode('utf-8')}},
node_id_or_blinded_path=self.bob.pubkey)
with self.assertRaises(Timeout):
await t2
async def run_test3(self, t, rkey):
t3 = t.submit_send(
payload={'message': {'text': 'carol_with_immediate_reply'.encode('utf-8')}},
node_id_or_blinded_path=self.carol.pubkey,
key=rkey)
t3_result = await t3
self.assertEqual(t3_result, ({'path_id': {'data': b'electrum' + rkey}}, {}))
async def run_test4(self, t, rkey):
t4 = t.submit_send(
payload={'message': {'text': 'dave_with_slow_reply'.encode('utf-8')}},
node_id_or_blinded_path=self.dave.pubkey,
key=rkey)
t4_result = await t4
self.assertEqual(t4_result, ({'path_id': {'data': b'electrum' + rkey}}, {}))
async def run_test5(self, t):
t5 = t.submit_send(
payload={'message': {'text': 'no_peer'.encode('utf-8')}},
node_id_or_blinded_path=self.eve.pubkey)
# will not find route to eve, but has eve's address, but we are configured to not direct connect
with self.assertRaises(NoRouteFound) as c:
await t5
self.assertEqual(c.exception.peer_address, LNPeerAddr('localhost', 1234, self.eve.pubkey))
async def test_request_and_reply(self):
n = MockNetwork()
lnw = self.create_mock_lnwallet(name='test_request_and_reply', has_anchors=False)
# mock add_peer for direct connection fallback
async def mock__add_peer(host, port, node_id):
mock_peer = MockPeer(pubkey=node_id)
# lnw.lnpeermgr._peers[node_id] = mock_peer
return mock_peer
lnw.lnpeermgr._add_peer = mock__add_peer
def slow(*args, **kwargs):
time.sleep(2*TIME_STEP)
def withreply(key, *args, **kwargs):
t.on_onion_message_received({'path_id': {'data': b'electrum' + key}}, {})
def slowwithreply(key, *args, **kwargs):
time.sleep(2*TIME_STEP)
t.on_onion_message_received({'path_id': {'data': b'electrum' + key}}, {})
rkey1 = bfh('0102030405060708')
rkey2 = bfh('0102030405060709')
lnw.lnpeermgr._peers[self.alice.pubkey] = MockPeer(self.alice.pubkey)
lnw.lnpeermgr._peers[self.bob.pubkey] = MockPeer(self.bob.pubkey, on_send_message=slow)
lnw.lnpeermgr._peers[self.carol.pubkey] = MockPeer(self.carol.pubkey, on_send_message=partial(withreply, rkey1))
lnw.lnpeermgr._peers[self.dave.pubkey] = MockPeer(self.dave.pubkey, on_send_message=partial(slowwithreply, rkey2))
lnw.channel_db._addresses[self.eve.pubkey] = {NetAddress('localhost', '1234'): int(time.time())}
t = OnionMessageManager(lnw)
t.start_network(network=n)
try:
await asyncio.sleep(TIME_STEP)
self.logger.debug('tests in sequence')
await self.run_test1(t)
await self.run_test2(t)
await self.run_test3(t, rkey1)
await self.run_test4(t, rkey2)
await self.run_test5(t)
self.logger.debug('tests in parallel')
async with OldTaskGroup() as group:
await group.spawn(self.run_test1(t))
await group.spawn(self.run_test2(t))
await group.spawn(self.run_test3(t, rkey1))
await group.spawn(self.run_test4(t, rkey2))
await group.spawn(self.run_test5(t))
finally:
await asyncio.sleep(TIME_STEP)
self.logger.debug('stopping manager')
await t.stop()
await lnw.stop()
async def test_forward(self):
n = MockNetwork()
lnw = self.create_mock_lnwallet(name='alice', has_anchors=False)
lnw.node_keypair = self.alice
self.was_sent = False
def on_send(to: str, *args, **kwargs):
self.assertEqual(to, 'bob')
self.was_sent = True
# validate what's sent to bob
self.assertEqual(bfh(HOPS[1]['E']), kwargs['blinding'])
message_type, payload = decode_msg(bfh(test_vectors['decrypt']['hops'][1]['onion_message']))
self.assertEqual(message_type, 'onion_message')
self.assertEqual(payload['onion_message_packet'], kwargs['onion_message_packet'])
lnw.lnpeermgr._peers[self.bob.pubkey] = MockPeer(self.bob.pubkey, on_send_message=partial(on_send, 'bob'))
lnw.lnpeermgr._peers[self.carol.pubkey] = MockPeer(self.carol.pubkey, on_send_message=partial(on_send, 'carol'))
t = OnionMessageManager(lnw)
t.start_network(network=n)
onionmsg = bfh(test_vectors['onionmessage']['onion_message_packet'])
try:
t.on_onion_message({
'path_key': bfh(test_vectors['route']['first_path_key']),
'len': len(onionmsg),
'onion_message_packet': onionmsg
})
finally:
await asyncio.sleep(2*TIME_STEP)
self.logger.debug('stopping manager')
await t.stop()
await lnw.stop()
self.assertTrue(self.was_sent)
async def test_receive_unsolicited(self):
n = MockNetwork()
lnw = self.create_mock_lnwallet(name='dave', has_anchors=False)
lnw.node_keypair = self.dave
t = OnionMessageManager(lnw)
t.start_network(network=n)
self.received_unsolicited = False
def my_on_onion_message_received_unsolicited(*args, **kwargs):
self.received_unsolicited = True
t.on_onion_message_received_unsolicited = my_on_onion_message_received_unsolicited
packet = bfh(test_vectors['decrypt']['hops'][3]['onion_message'])
message_type, payload = decode_msg(packet)
try:
t.on_onion_message(payload)
self.assertTrue(self.received_unsolicited)
finally:
await asyncio.sleep(TIME_STEP)
self.logger.debug('stopping manager')
await t.stop()
await lnw.stop()
class TestOnionMessageUtils(TestPeer):
async def test_get_blinded_paths_to_me_payment(self):
# A <- B (alice generates blinded path from bob to herself)
graph = self.prepare_chans_and_peers_in_graph(self.GRAPH_DEFINITIONS['single_chan'])
alice, bob = graph.workers.values()
# store bobs channel_update in alice
alice_chan = graph.channels[('alice', 'bob')]
bob_chan = graph.channels[('bob', 'alice')]
bob_update_raw = bob_chan.get_outgoing_gossip_channel_update()
bob_update = decode_msg(bob_update_raw)[1]
bob_update['raw'] = bob_update_raw
alice_chan.set_remote_update(bob_update)
final_recipient_data = {'path_id': {'data': os.urandom(32)}}
paths, payinfos = get_blinded_paths_to_me(alice, final_recipient_data, onion_message=False)
self.assertEqual(len(paths), 1)
self.assertEqual(len(payinfos), 1)
self.assertEqual(payinfos[0], {
'fee_base_msat': bob_chan.forwarding_fee_base_msat,
'fee_proportional_millionths': bob_chan.forwarding_fee_proportional_millionths,
'cltv_expiry_delta': bob_chan.forwarding_cltv_delta + MIN_FINAL_CLTV_DELTA_ACCEPTED,
'htlc_minimum_msat': bob_chan.config[REMOTE].htlc_minimum_msat,
'htlc_maximum_msat': min(bob_chan.config[REMOTE].max_htlc_value_in_flight_msat, 1000 * bob_chan.constraints.capacity),
'flen': 0,
'features': bytes(0),
})
blinded_path = paths[0]
self.assertEqual(len(blinded_path['path']), 2)
self.assertEqual(blinded_path['first_node_id'], bob.node_keypair.pubkey)
self.assertEqual(len(blinded_path['first_path_key']), 33)
self.assertEqual(blinded_path['num_hops'], len(blinded_path['path']).to_bytes(length=1, byteorder='big'))
self.assertIn('blinded_node_id', blinded_path['path'][0])
self.assertIn('encrypted_recipient_data', blinded_path['path'][0])