def sign_message(self, message, keypath):
self.device.check_mitm()
keypath = keypath.replace('h', '\'')
keypath = keypath.replace('H', '\'')
try:
ok = self.device.send_recv(CCProtocolPacker.sign_message(
message.encode(), keypath, AF_CLASSIC),
timeout=None)
assert ok == None
if self.device.is_simulator:
self.device.send_recv(CCProtocolPacker.sim_keypress(b'y'))
except CCProtoError as e:
raise ValueError(str(e))
while 1:
time.sleep(0.250)
done = self.device.send_recv(CCProtocolPacker.get_signed_msg(),
timeout=None)
if done == None:
continue
break
if len(done) != 2:
raise ValueError('Failed: %r' % done)
addr, raw = done
sig = str(base64.b64encode(raw), 'ascii').replace('\n', '')
return {"signature": sig}
def sign_tx(self, tx):
self.device.check_mitm()
# Get psbt in hex and then make binary
fd = io.BytesIO(base64.b64decode(tx.serialize()))
# learn size (portable way)
offset = 0
sz = fd.seek(0, 2)
fd.seek(0)
left = sz
chk = sha256()
for pos in range(0, sz, MAX_BLK_LEN):
here = fd.read(min(MAX_BLK_LEN, left))
if not here: break
left -= len(here)
result = self.device.send_recv(
CCProtocolPacker.upload(pos, sz, here))
assert result == pos
chk.update(here)
# do a verify
expect = chk.digest()
result = self.device.send_recv(CCProtocolPacker.sha256())
assert len(result) == 32
if result != expect:
raise ValueError("Wrong checksum:\nexpect: %s\n got: %s" %
(b2a_hex(expect).decode('ascii'),
b2a_hex(result).decode('ascii')))
# start the signing process
ok = self.device.send_recv(CCProtocolPacker.sign_transaction(
sz, expect),
timeout=None)
assert ok == None
if self.device.is_simulator:
self.device.send_recv(CCProtocolPacker.sim_keypress(b'y'))
print("Waiting for OK on the Coldcard...")
while 1:
time.sleep(0.250)
done = self.device.send_recv(CCProtocolPacker.get_signed_txn(),
timeout=None)
if done == None:
continue
break
if len(done) != 2:
raise ValueError('Failed: %r' % done)
result_len, result_sha = done
result = self.device.download_file(result_len,
result_sha,
file_number=1)
return {'psbt': base64.b64encode(result).decode()}
def doit(k):
if hasattr(dev.dev, 'pipe'):
# simulator has special USB command
dev.send_recv(CCProtocolPacker.sim_keypress(k.encode('ascii')))
elif request.config.getoption("--manual"):
# need actual user interaction
print("==> NOW, on the Coldcard, press key: %r" % k, file=sys.stderr)
else:
# try to use debug interface to simulate the press
# XXX for some reason, picocom must **already** be running for this to work.
# - otherwise, this locks up
devs = list(glob.glob('/dev/tty.usbmodem*'))
if len(devs) == 1:
with open(devs[0], 'wb', 0) as fd:
fd.write(k.encode('ascii'))
else:
raise pytest.fail('need to provide keypresses')
def display_address(self, keypath, p2sh_p2wpkh, bech32):
self.device.check_mitm()
keypath = keypath.replace('h', '\'')
keypath = keypath.replace('H', '\'')
if p2sh_p2wpkh:
format = AF_P2WPKH_P2SH
elif bech32:
format = AF_P2WPKH
else:
format = AF_CLASSIC
address = self.device.send_recv(CCProtocolPacker.show_address(
keypath, format),
timeout=None)
if self.device.is_simulator:
self.device.send_recv(CCProtocolPacker.sim_keypress(b'y'))
return {'address': address}