公开(公告)号：US11063751B2

公开(公告)日：2021-07-13

申请号：US16332535

申请日：2017-09-12

Applicant: LG ELECTRONICS INC.

Inventor： Kyusuk Han ,  Hyobin Bae

IPC: H04L9/08 ,  H04L9/32 ,  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.