A t-box information security protection method based on vehicle characteristic security level

Abstract

Provided is a T-BOX information safety protection method based on vehicle characteristic safety levels. The method includes the following steps that firstly, the kinetic energy range of a whole vehicle is calculated according to the vehicle running speed range and the vehicle load range, and the vehicle safety levels are divided according to the kinetic energy range and guided into a T-BOX; secondly, the T-BOX acquires the values of two vehicle characteristics, namely the vehicle running speed and the vehicle load, and then judges which safety level does the current vehicle running state belong to according to value calculation of the two vehicle characteristics; thirdly, the T-BOX judges which electronic control systems should be subjected to isolation protection according to the safety levels of the current vehicle running state and sends corresponding isolation starting messages to the electronic control systems; and fourthly, an ECU of the corresponding electronic control system receives the isolation starting messages and is in the corresponding isolation state. According to the method, the task of guiding the vehicle characteristic safety levels into the T-BOX in the first step is only executed once, and then the second step, the third step and the fourth step are repeatedly executed.

Description

technical field [0001] The invention relates to the field of automobile information security, in particular to a T-BOX information security protection method based on vehicle characteristic security levels. Background technique [0002] In recent years, the automobile industry has developed vigorously, and the automobile has also begun to transform from a purely mechanical system to a mechanical-electronic combination system. Today's cars contain many electronic control systems, including electronically controlled ignition (ESA), electronically controlled fuel injection (EFI), idle speed control (ISC), electronically controlled automatic transmission (ECT), anti-lock braking system (ABS), Drive anti-skid system (ASR), electronically controlled power steering system, etc. So many electronic control systems exchange information through the CAN bus. If external threatening information enters the CAN bus and then attacks many electronic control systems, it will cause serious da...

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Problems solved by technology

[0004] Although many automotive information security protection mechanisms based on information-level characteristics have appeared in recent years, there are not many information security protection mechanisms based on physical-level characteristics. High-risk physical-level information protection is far from Not enough, once information attacks are received under high-risk conditions and the vehicle loses control, the consequences will be disastrous

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