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()
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()