A method and system for safely loading program codes of a vehicle-mounted t-box

Abstract

The present invention relates to a method and system for safely loading program codes of a vehicle-mounted T-Box, wherein the method includes: after the vehicle-mounted T-box is powered on, two-way identity authentication is performed with the cloud, and if the two-way identity authentication is successful, the cloud will pre-store the The first subroutine code of the vehicle is sent to the vehicle T-box; the first subroutine code and the second subroutine code stored locally in the vehicle T-box are respectively decrypted by the program code key and merged to obtain the target program code; the target program is loaded The code runs in the RAM area. The present invention only stores part of the target program code in the vehicle-mounted T-Box, and the other part is stored in the cloud, so that even if the data stored in the chip is illegally stolen from the vehicle-mounted T-Box, the thief cannot obtain the complete program Code, which improves the security of the vehicle T‑Box program code storage and startup process.

Description

technical field [0001] The invention relates to the technical field of Internet of Vehicles and information security, in particular to a method and device for safely loading program codes of a vehicle-mounted T-Box. Background technique [0002] At present, the program startup control of the vehicle-mounted T-Box is mostly implemented by a chip that supports the SecureBoot mechanism. The common practice is to store the execution program code and the corresponding check value (such as integrity check code or signature code) inside the chip. After the T-Box is powered on, the safe loading of the program is completed by comparing the calculated program code check value with the stored check value. [0003] However, under the premise of many factors such as cost control and the chip's own loopholes, it is difficult for the main control CPU chip of the T-Box in the vehicle-mounted system to guarantee the security of the stored program execution code in many cases, and it may be i...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the technical problems existing in the prior art, the present invention provides a method and system for safely loading program codes of a vehicle-mounted T-Box, which solves the problem of low program code security of the vehicle-mounted T-Box main control CPU chip, and effectively disperses the program codes of the vehicle-mounted T-Box. Security Risks of T-Box

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