公开(公告)号：US20160330032A1

公开(公告)日：2016-11-10

申请号：US15215078

申请日：2016-07-20

Applicant: GM Global Technology Operations LLC

Inventor： David M. Naim ,  Thomas M. Forest ,  Padma Sundaram ,  Mohammed Abdulla Yousuf

IPC: H04L9/32 ,  G06F13/42

CPC classification number: H04L9/3242 ,  G06F13/4282 ,  G06F21/64 ,  G06F21/85 ,  H04L2209/84

Abstract: A method of transmitting data within a vehicle includes: storing two copies of a data message; constructing at an electronic control unit (ECU) a serial bus message that includes one copy of the data message and a message authentication code (MAC) created using a secret key stored at the ECU, a MAC algorithm, and a different copy of the data message; transmitting the serial bus message to a receiving ECU over a vehicle bus; authenticating the serial bus message at the receiving ECU using a copy of the key stored at the receiving ECU by creating a copy of the MAC from the data message included in the serial bus message and the copy of the key; comparing the MAC from the serial bus message with the copy of the MAC created at the receiving ECU; and rejecting or accepting the data message based on the comparison.

Abstract translation: 在车辆内发送数据的方法包括：存储数据消息的两个副本; 在电子控制单元（ECU）处构造包括数据消息的一个副本和使用存储在ECU中的秘密密钥创建的消息认证码（MAC）的串行总线消息，MAC算法和数据的不同副本 信息; 通过车辆总线将串行总线消息发送到接收ECU; 使用存储在接收ECU处的密钥的副本，在接收ECU处认证串行总线消息，通过从包括在串行总线消息中的数据消息和密钥的副本创建MAC的副本; 将来自串行总线消息的MAC与在接收ECU处创建的MAC的副本进行比较; 并基于比较拒绝或接受数据消息。