Vehicle program file encryption method and system

Abstract

The invention provides a vehicle-mounted program file encryption method and system, which relate to the technical field of electronics and electrics. The vehicle program file encryption method includes: the remote server obtains the vehicle unique identification code of the vehicle to be downloaded; divides the data in the vehicle program file into more than one data segment; uses the vehicle unique identification code and more than one data segment to generate more than one target data segments, and calculate the respective message authentication codes of more than one target data segment, at least one target data segment includes a vehicle unique identification code; use a key and Advanced Encryption Standard AES to encrypt more than one target data segment; Based on the encrypted one or more target data segments and the message authentication codes of the one or more target data segments, one or more encrypted sub-files are generated. Utilizing the technical scheme of the invention can improve the safety of automobile control.

Description

technical field [0001] The invention relates to the field of electronics and electricity, in particular to a method and system for encrypting vehicle-mounted program files. Background technique [0002] Electronic Control Unit (ECU) is widely used in automobiles. The electronic control unit can perform calculations according to the collected parameter information in combination with the program stored in the electronic control unit. The result of the calculation is converted into a control signal, so as to realize the overall control of the vehicle by the electronic control unit. [0003] In order to meet the various needs of users for vehicle control functions, the electronic control unit needs to download or update various programs. At this stage, the seedkey algorithm is often used to perform security authentication on the electronic control unit used for downloading. However, the seedkey algorithm is easy to leak and be cracked, resulting in easy tampering of program ...

AI Technical Summary

Problems solved by technology

However, the seedkey algorithm is easy to leak and be cracked, resulting in easy tampering of program files, increasing the risk of data loss and leakage in program files, and also increasing the risk of electronic control unit failure and remote servers or electronic control units being hacked

However, after the electronic control unit downloads the program file, it is impossible to judge whether the program file has been tampered with.

If the electronic control unit downloads the tampered program file, it will cause hidden dangers to the safety of the car and reduce the safety of car control

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