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}
async def sign_text_msg(self, msg, subpath, addr_fmt):
# send text and path to sign with; no policy check
msg = msg.encode('ascii')
async with self.sign_lock:
try:
await self.send_recv(
CCProtocolPacker.sign_message(msg, subpath, addr_fmt))
while 1:
await asyncio.sleep(0.250)
done = await self.send_recv(
CCProtocolPacker.get_signed_msg(), timeout=None)
if done == None:
continue
break
except CCUserRefused:
raise RuntimeError("Coldcard refused request based on policy.")
if len(done) != 2:
logging.error('Coldcard failed: %r' % done)
raise RuntimeError(done)
addr, sig = done
return sig, addr
def sign_message(message,
path,
verbose=True,
just_sig=False,
wrap=False,
segwit=False):
"Sign a short text message"
dev = ColdcardDevice(sn=force_serial)
if wrap:
addr_fmt = AF_P2WPKH_P2SH
elif segwit:
addr_fmt = AF_P2WPKH
else:
addr_fmt = AF_CLASSIC
# NOTE: initial version of firmware not expected to do segwit stuff right, since
# standard very much still in flux, see: <https://github.com/bitcoin/bitcoin/issues/10542>
# not enforcing policy here on msg contents, so we can define that on product
message = message.encode('ascii') if not isinstance(message,
bytes) else message
ok = dev.send_recv(CCProtocolPacker.sign_message(message, path, addr_fmt),
timeout=None)
assert ok == None
print("Waiting for OK on the Coldcard...", end='', file=sys.stderr)
sys.stderr.flush()
while 1:
time.sleep(0.250)
done = dev.send_recv(CCProtocolPacker.get_signed_msg(), timeout=None)
if done == None:
continue
break
print("\r \r", end='', file=sys.stderr)
sys.stderr.flush()
if len(done) != 2:
click.echo('Failed: %r' % done)
sys.exit(1)
addr, raw = done
sig = str(b64encode(raw), 'ascii').replace('\n', '')
if just_sig:
click.echo(str(sig))
elif verbose:
click.echo(
'-----BEGIN SIGNED MESSAGE-----\n{msg}\n-----BEGIN '
'SIGNATURE-----\n{addr}\n{sig}\n-----END SIGNED MESSAGE-----'.
format(msg=message.decode('ascii'), addr=addr, sig=sig))
else:
click.echo('%s\n%s\n%s' % (message.decode('ascii'), addr, sig))
def sign_message_poll(self):
# poll device... if user has approved, will get tuple: (addr, sig) else None
return self.dev.send_recv(CCProtocolPacker.get_signed_msg(),
timeout=None)
def sign_message_poll(self):
# poll device... if user has approved, will get tuple: (addr, sig) else None
return self.dev.send_recv(CCProtocolPacker.get_signed_msg(), timeout=None)
