Patent Number: 9,432,844

Title: Traffic encryption key management for machine to machine multicast group

Abstract: A method for updating a group traffic key used for encrypting and decrypting multicast data in a wireless communication system is described. The method includes receiving, from the base station, a first message comprising a new group security seed; and updating the group traffic key based on the new group security seed.

Inventors: Jung; In Uk (Anyang-si, KR), Kwak; Jin Sam (Anyang-si, KR), Ryu; Ki Seon (Anyang-si, KR), Lee; Wook Bong (Anyang-si, KR)

Assignee: LG ELECTRONICS INC.

International Classification: H04W 12/04 (20090101); H04W 12/02 (20090101); H04W 4/00 (20090101); H04L 29/06 (20060101)

Expiration Date: 2020-08-30 0:00:00