Time-triggered in-vehicle network message authentication method based on hierarchical multi-layer one-way key chain

Abstract

The invention provides a time-triggered vehicle network message authentication method based on a hierarchical multi-layer unidirectional key chain, which belongs to the time-triggered vehicle network data authentication method under the Internet of Vehicles environment. The sending node is initialized, the sending node builds a hierarchical multi-layer one-way key chain and distributes the initial key; the sending node multicasts the verified message and key; the receiving node verifies the received message and key. The present invention is based on the concept of delayed release of hierarchical multi-layer key chains. The bottom key has a shorter release delay and length to authenticate real-time communication data, and each high-level key has a longer release delay and length. The length is used to credibly distribute the initial key of its lower layer key chain, and the sending node only needs to calculate and store the first key chain of each layer in advance; trigger the resource constraints, real-time and security of the vehicle network at time It provides an appropriate trade-off between performance and greatly reduces the overhead of bandwidth, storage and computing resources generated by message authentication.

Description

technical field [0001] The invention relates to a time-triggered vehicular network message authentication method based on a hierarchical multi-layer unidirectional key chain, which is used to ensure the integrity of data on the time-triggered vehicular network and the authenticity of data sources under the Internet of Vehicles environment. Background technique [0002] Networking enables automobiles to have richer comfort and infotainment functions. For example, automobile manufacturers use mobile APPs to provide services such as door lock control, heating adjustment, manual parking, and software updates, and have greatly promoted the intelligentization of automobiles. , The development of traffic intelligence, but at the same time it also brings new information security risks to cars. Traditionally, the vehicle control system is physically isolated from the outside world, so the internal network of the current vehicle control system (ie vehicle network, such as CAN / CAN_FD, ...

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a time-triggered vehicle-mounted network message authentication method based on a hierarchical multi-layer one-way key chain, so as to overcome the shortcomings and deficiencies of the existing message authentication mechanism in the vehicle-mounted environment

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