Method and system for safely loading vehicle-mounted T-Box program code

Abstract

The invention relates to a method and system for safely loading a vehicle-mounted T-Box program code, and the method comprises the steps: carrying out the bidirectional identity authentication with acloud after the vehicle-mounted T-Box is powered on, and enabling the cloud to transmit a pre-stored first subprogram code to the vehicle-mounted T-Box if the bidirectional identity authentication succeeds; decrypting the first sub-program code and a second sub-program code locally stored in the vehicle-mounted T-box through a program code secret key, and combining to obtain a target program code;and loading the target program code to the RAM area for running. According to the invention, only partial components of the target program code are stored in the vehicle-mounted T-Box; and the otherpart of the components are stored in the cloud, so that even if the data stored in the chip is illegally stolen at the vehicle-mounted T-Box end, a stealer cannot obtain the complete program code, andthe safety of the storage and starting process of the vehicle-mounted T-Box program code is improved.

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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