A method and system for vehicle-mounted Ethernet secure communication based on block chain

A network security and communication method technology, applied in the field of blockchain-based vehicle Ethernet security communication methods and systems, can solve problems such as insufficient information sharing, mutual trust between ECUs, and insufficient security and efficiency of the vehicle Ethernet network to achieve strong expansion security, preventing unauthorized access, addressing distrust and insufficient information sharing

Active Publication Date: 2022-03-25
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to overcome the defects and deficiencies existing in the prior art, the present invention provides a method and system for vehicle-mounted Ethernet security communication based on blockchain, which effectively solves the problem on the basis of preventing any unauthorized access and maintaining efficient identity authentication. The current in-vehicle Ethernet network is not safe and efficient, lack of mutual trust between ECUs and insufficient information sharing

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  • A method and system for vehicle-mounted Ethernet secure communication based on block chain
  • A method and system for vehicle-mounted Ethernet secure communication based on block chain

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Embodiment

[0035] Such as figure 1 As shown, the present embodiment provides a block chain-based vehicle Ethernet security communication method. In this embodiment, the block chain network includes: the central gateway of the vehicle communication as the master node of the block chain network; and the central gateway The connected domain controller acts as a child node of the blockchain network; all ECUs are connected to the blockchain network through the connected child nodes.

[0036] The block chain-based vehicle Ethernet safety communication method of the present embodiment specifically includes the following steps:

[0037] S1: if figure 2 As shown, the ECU sends the connection request to the master node through the child node to join the blockchain network; the connection request includes the ECU ID, child node ID, time stamp, expiration date, and public key, and the child node domain controller uses the master node gateway The public key encrypts the bytecode of the connection ...

Embodiment 2

[0050] This embodiment provides a block chain-based vehicular Ethernet security communication system. The block chain is provided with a master node and a sub-node. The central gateway of the vehicular communication serves as the master node of the block chain network. As a child node of the blockchain network, all ECUs are connected to the blockchain network through the connected child nodes;

[0051] In this embodiment, the master node of the blockchain network is used to store the key of the master node, the public keys of all sub-nodes and ECUs, and the complete uplink data of the blockchain network, and to authenticate all sub-nodes and generate new blocks , put the new block on the chain;

[0052] In this embodiment, the sub-nodes of the blockchain network are used to store the key of the sub-node, the public key of the master node and the complete uplink data of the blockchain network, and broadcast new blocks;

[0053] In this embodiment, when the ECU is connected to ...

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Abstract

The invention discloses a block chain-based vehicle Ethernet safety communication method and system. The method includes the following steps: the vehicle ECU sends a connection request to the main node through a sub-node, joins the block chain network, and the sub-node uses the main The public key of the node gateway encrypts the bytecode of the connection request to obtain the ciphertext, and after signing the ciphertext with the private key of the child node, the connection request ciphertext and signature are sent to the master node; the source ECU passes the signed communication request through The source child node sends to the main node; the main node uses the blockchain to judge the validity of the communication, and sends the communication permission to the legal ECU; the ECUs of both parties in the communication directly send and receive communication data. The invention adopts a three-layer structure of connection request, communication request and communication permission to ensure the safety and efficiency of in-vehicle network communication, and utilizes the non-tamperable modification and openness of blockchain to solve the problems of lack of mutual trust and insufficient information sharing between ECUs.

Description

technical field [0001] The invention relates to the technical field of vehicle communication, in particular to a method and system for secure communication of a vehicle Ethernet network based on blockchain. Background technique [0002] With the popularization of automobiles and the enrichment of types and functions of on-board equipment, the communication security between ECUs on-board electronic control units has become the main focus of automobile communication. At present, a large number of vehicle-mounted ECU devices do not have a security authentication mechanism, which leads to more serious trust problems among ECUs, and it is difficult to guarantee the integrity and authenticity of ECU messages. At the same time, when faced with the transmission of tens of millions or even hundreds of millions of network messages in the car, the centralized vehicle network communication management mechanism and the existing blockchain-based encryption scheme are limited to CAN bus co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L67/12H04L67/60H04L9/40H04L9/32
CPCH04L67/12H04L63/0428H04L63/126H04L9/3247H04L67/60H04L9/50
Inventor 孙恒彭肯恩翁健刘志全邱培超
Owner JINAN UNIVERSITY
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