公开(公告)号：US20230239158A1

公开(公告)日：2023-07-27

申请号：US18083171

申请日：2022-12-16

Applicant: PUKYONG NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATION

Inventor： Kyungchang LEE ,  Hyunjun JANG ,  Hyeongjun KIM ,  Hyunhee KIM ,  Eunhye SIN

IPC: H04L9/32 ,  H04L9/08 ,  H04L12/40

CPC classification number: H04L9/3242 ,  H04L9/0869 ,  H04L12/40026 ,  H04L2012/40215

Abstract: There is provided a message chain-based CAN security system with a hash function, including: a hash value generating unit generating a hash value H(r,ID,i)/H′(r,ID,i) using a received Hash Reset Key HRKr and ID to be transmitted or received by the system when an arbitrary node transmits the HRKr; a CAN message transmitting unit transmitting a CAN message including the hash value H(r,ID,i)/H′(r,ID,i); a validity determining unit determining whether H(r,ID,i) of a CAN message received by a node which has received the CAN message matches a value held by the system; a message receiving and executing unit allowing message reception and executing a command when the validity determining unit determines that the CAN message is valid; and a warning transmitting unit transmitting an intruder detection warning.