def sign_message(self, sequence, message, password):
sig = None
try:
message = message.encode('utf8')
inputPath = self.get_derivation() + "/%d/%d" % sequence
msg_hash = Hash(msg_magic(message))
inputHash = to_hexstr(msg_hash)
hasharray = []
hasharray.append({'hash': inputHash, 'keypath': inputPath})
hasharray = json.dumps(hasharray)
msg = ('{"sign":{"meta":"sign message", "data":%s}}' % hasharray).encode('utf8')
dbb_client = self.plugin.get_client(self)
if not dbb_client.is_paired():
raise Exception(_("Could not sign message."))
reply = dbb_client.hid_send_encrypt(msg)
self.handler.show_message(_("Signing message ...") + "\n\n" +
_("To continue, touch the Digital Bitbox's blinking light for 3 seconds.") + "\n\n" +
_("To cancel, briefly touch the blinking light or wait for the timeout."))
reply = dbb_client.hid_send_encrypt(msg) # Send twice, first returns an echo for smart verification (not implemented)
self.handler.finished()
if 'error' in reply:
raise Exception(reply['error']['message'])
if 'sign' not in reply:
raise Exception(_("Could not sign message."))
if 'recid' in reply['sign'][0]:
# firmware > v2.1.1
sig_string = binascii.unhexlify(reply['sign'][0]['sig'])
recid = int(reply['sign'][0]['recid'], 16)
sig = ecc.construct_sig65(sig_string, recid, True)
pubkey, compressed = ecc.ECPubkey.from_signature65(sig, msg_hash)
addr = public_key_to_p2pkh(pubkey.get_public_key_bytes(compressed=compressed))
if ecc.verify_message_with_address(addr, sig, message) is False:
raise Exception(_("Could not sign message"))
elif 'pubkey' in reply['sign'][0]:
# firmware <= v2.1.1
for recid in range(4):
sig_string = binascii.unhexlify(reply['sign'][0]['sig'])
sig = ecc.construct_sig65(sig_string, recid, True)
try:
addr = public_key_to_p2pkh(binascii.unhexlify(reply['sign'][0]['pubkey']))
if ecc.verify_message_with_address(addr, sig, message):
break
except Exception:
continue
else:
raise Exception(_("Could not sign message"))
except BaseException as e:
self.give_error(e)
return sig
def test_hash(self):
announce = MasternodeAnnounce.deserialize(raw_announce)
expected_hash = 'a8a3dc1782191f28f613c8971709a57ee58a4d0d7a11138804f89a0b088d67d1'
msg = announce.serialize_for_sig()
h = sha256d(ecc.msg_magic(msg))
h = bitcoin.hash_encode(h)
self.assertEqual(expected_hash, h)
def test_hash(self):
announce = MasternodeAnnounce.deserialize(raw_announce_70210)
expected_hash = '5f69e59f5ea327be16e649fb6c72ed02e39ef9dae8ecb27d222419e94dcd89b7'
msg = announce.serialize_for_sig()
h = sha256d(ecc.msg_magic(msg))
h = bitcoin.hash_encode(h)
self.assertEqual(expected_hash, h)