Vehicle engine antitheft system authentication framework

Abstract

The invention relates to a vehicle engine antitheft system authentication framework. An authentication coil and a key are connected with an engine antitheft module. A non-power control module is adopted to be connected with the engine antitheft module. When the key is inserted in an ignition switch and the ignition switch rotates, the non-power control module sends a series of random numbers A toan IMMO module, then the IMMO module sends a command to the key, a chip of the key sends a serial number to the IMMO module, after the serial number is authenticated by the IMMO module and passes theauthentication, a random number B is generated, encrypted and then sent to the key, the key encrypts the random number B on the basis, data are sent to the IMMO module and then forwarded to the non-power control module to be authenticated, and the non-power control module controls an engine control unit to start an engine according to an authentication result. A new motor vehicle antitheft conceptis provided, a power module does not participate in the antitheft authentication process, other controllers such as a body control module BCM participate in the antitheft authentication process, thepower module is notified of the authentication result through a CAN or a hard wire after authentication is finished, and the power module judges a signal so as to control starting.

Description

technical field [0001] The invention relates to an engine anti-theft IMMO, in particular to an IMMO system with authentication of an anti-theft system and a non-power control module. Background technique [0002] The current automotive engine anti-theft IMMO systems on the market are basically authenticated by the key and coil in the IMMO system, and then authenticated with the engine control unit (or power control module). The traditional engine immobilizer IMMO system certification process is as follows: figure 1 As shown, when the key is inserted into the ignition switch and turned, the power control module (the fuel vehicle is the engine control unit ECU, and the new energy vehicle is generally the power output power control module VCU, HCU, etc.) sends a string of random numbers A to the IMMO module. Then the IMMO module sends a command to the key, and the chip of the key sends the serial number to the IMMO module. After the IMMO module calculates and authenticates acc...

AI Technical Summary

Problems solved by technology

Although the anti-theft capability in this architecture is relatively high, at the same time, because domestic engine control units are basically made by companies such as BOSCH, UMC, and Continental, the development and modification involved are extremely time-consuming and laborious, and the key points are often pinched for various reasons. It is difficult to meet the rapid response requirements of the domestic market

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