MESSAGE AUTHENTICATION METHOD IN COMMUNICATION SYSTEM AND COMMUNICATION SYSTEM
    1.
    发明公开
    MESSAGE AUTHENTICATION METHOD IN COMMUNICATION SYSTEM AND COMMUNICATION SYSTEM 审中-公开
    EINEM KOMMUNIKATIONSYSTEM UNDER KOMMUNIKATIONSSYSTEM中的NACHRICHTENAUTHENTIFIZIERUNGSVERFAHREN

    公开(公告)号:EP2775660A1

    公开(公告)日:2014-09-10

    申请号:EP12846706.5

    申请日:2012-10-30

    IPC分类号: H04L9/32 G09C1/00

    摘要: Each of ECUs counts the number of messages transmitted for each of CAN IDs. A transmission node that has transmitted a main message produces an MAC from a data field and the CAN ID in the main message and a counter value corresponding to the CAN ID, and transmits the MAC as an MAC message. A reception node that has received the main message produces an MAC from the data field and the CAN ID contained in the main message and the counter value corresponding to the CAN ID, and determines whether the MAC matches the MAC contained in the MAC message. By so doing, verification whether the main message is valid or not can be made. According to this configuration, message authentication by the MAC can be made without changing a CAN protocol.

    摘要翻译: 每个ECU对每个CAN ID发送的消息数进行计数。 发送主消息的传输节点从数据字段产生MAC,主消息中的CAN ID和对应于CAN ID的计数器值,并将MAC作为MAC消息发送。 已经接收到主消息的接收节点从数据字段产生MAC,并且包含在主消息中的CAN ID和对应于CAN ID的计数器值,并且确定MAC是否匹配MAC消息中包含的MAC。 通过这样做,可以确认主消息是否有效。 根据该结构,可以在不改变CAN协议的情况下进行MAC的消息认证。