def decrypt_pkmsg(self, senderid, data, unpad):
logger.debug("decrypt_pkmsg(senderid=%s, data=(omitted), unpad=%s)" % (senderid, unpad))
pkmsg = PreKeyWhisperMessage(serialized=data)
try:
plaintext = self._get_session_cipher(senderid).decryptPkmsg(pkmsg)
return self._unpad(plaintext) if unpad else plaintext
except NoSessionException:
raise exceptions.NoSessionException()
except InvalidKeyIdException:
raise exceptions.InvalidKeyIdException()
except InvalidMessageException:
raise exceptions.InvalidMessageException()
except DuplicateMessageException:
raise exceptions.DuplicateMessageException()
def group_decrypt(self, groupid, participantid, data):
logger.debug(
"group_decrypt(groupid=%s, participantid=%s, data=[omitted])" %
(groupid, participantid))
group_cipher = self._get_group_cipher(groupid, participantid)
try:
plaintext = group_cipher.decrypt(data)
plaintext = self._unpad(plaintext)
return plaintext
except NoSessionException:
raise exceptions.NoSessionException()
except DuplicateMessageException:
raise exceptions.DuplicateMessageException()
except InvalidMessageException:
raise exceptions.InvalidMessageException()
def parseAndHandleMessageProto(self, encMessageProtocolEntity,
serializedData):
m = Message()
try:
m.ParseFromString(serializedData)
except:
print("DUMP:")
print(serializedData)
print([s for s in serializedData])
raise
if not m or not serializedData:
raise exceptions.InvalidMessageException()
if m.HasField("sender_key_distribution_message"):
self.handleSenderKeyDistributionMessage(
m.sender_key_distribution_message,
encMessageProtocolEntity.getParticipant(False))