公开(公告)号：US20190215153A1

公开(公告)日：2019-07-11

申请号：US16332535

申请日：2017-09-12

Applicant: LG ELECTRONICS INC.

Inventor： Kyusuk HAN ,  Hyobin BAE

IPC: H04L9/08 ,  H04L9/32

CPC classification number: H04L9/0833 ,  H04L9/0844 ,  H04L9/32 ,  H04L9/3255 ,  H04L12/40 ,  H04L29/06

Abstract: A communication system between a plurality of in-vehicle electronic devices protected using a symmetric key method is disclosed. The communication system includes a sender configured to transmit a message including a cyclic authentication code and a group authentication code, and a plurality of receivers configured to separately verify the message based on the cyclic authentication code and the group authentication code at a preset order.