End-to-end secure communication fault tolerance method and system

Abstract

The embodiment of the invention provides an end-to-end secure communication fault tolerance method and system, and the method comprises the steps: 1, receiving end-to-end communication message data; 2, judging whether the communication message is in a receiving period or not; step 3, reading communication message data according to a judgment result in combination with a fault-tolerant function; 4, calling a library function to verify the data content in the communication message; and step 5, when the verification result is valid, updating the communication message data signal, and transmitting the communication message data signal to an application layer. Compared with a traditional end-to-end protection mechanism, the method has the advantages that a fault-tolerant mechanism is added, delayed message data are read again, so that message loss caused by accidental communication delay is avoided, the fault-tolerant rate of secure communication delay is increased, and the frame loss problem caused by communication delay of the end-to-end mechanism is reduced to a great extent.

Description

technical field [0001] The invention relates to an end-to-end safety communication fault-tolerant method and system, in particular to the technical field of vehicle information safety. Background technique [0002] With the development of automobile intelligence and networking, higher requirements are put forward for the safety of electronics and electrical appliances. As an important part of communication, its safety cannot be ignored. [0003] In the traditional technology, secure communication is realized by adding cyclic redundancy check information in the message, but this method can only identify communication errors in which information has been tampered with, and cannot identify other error information. [0004] The automotive open system architecture is the current mainstream automotive electronics development standard. Its end-to-end protection mechanism can prevent the following communication failures of the vehicle, such as: information duplication, information l...

AI Technical Summary

Problems solved by technology

However, the end-to-end protection of data may cause the loss of communication data packets caused by communication delays, that is, due to the delayed arrival of data packets, the receiver misses receiving the latest data packets in the current cycle, resulting in The situation of data loss, and the loss of communication message data will lead to serious consequences in some cases

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