def _process_pre_key_message(self, jid, device, key):
self._log.info('Process pre key message from %s', jid)
pre_key_message = PreKeyWhisperMessage(serialized=key)
if not pre_key_message.getPreKeyId():
raise Exception('Received Pre Key Message '
'without PreKey => %s' % jid)
session_cipher = self._get_session_cipher(jid, device)
key = session_cipher.decryptPkmsg(pre_key_message)
identity_key = pre_key_message.getIdentityKey()
trust = self._get_trust_from_identity_key(jid, identity_key)
fingerprint = get_fingerprint(identity_key)
self._storage.setIdentityLastSeen(jid, identity_key)
self.xmpp_con.set_bundle()
self.add_device(jid, device)
return key, fingerprint, trust
def _get_identity_key_from_pk_message(key):
pre_key_message = PreKeyWhisperMessage(serialized=key)
return pre_key_message.getIdentityKey()