Control instruction secure transmission method and automobile anti-theft remote controller

Abstract

The invention relates to the technical field of automobile anti-theft alarm, in particular to a control instruction secure transmission method. The control instruction secure transmission method comprises the following steps of transmitting a prestored first encrypt data packet with a first encrypted secret key in response to a first key instruction; encrypting a control instruction corresponding to a second key instruction by using the prestored first secret key so as to generate a second encrypt data packet; and transmitting the second encrypt data packet. In addition, the invention further discloses an automobile anti-theft remote controller using the method. According to the invention, the anti-attack performances of signals can be enhanced, the probability that the signals are cracked due to being illegally intercepted or are interfered is reduced, and the safety of an automobile is enhanced.

Description

【Technical field】 [0001] The invention relates to the technical field of automobile anti-theft, in particular to an automobile anti-theft remote controller and a method for safely transmitting control instructions adopted therein. 【Background technique】 [0002] With the rapid development of society, cars have become the main means of transportation for people's daily travel. With the increase in the number of private cars, car theft has also become an increasingly serious social problem. [0003] At present, automobile anti-theft technology is mainly divided into two categories: mechanical and electronic. Among them, the mechanical anti-theft technology uses a specific mechanical device to lock the vehicle positioning system, or the oil supply system to achieve the purpose of anti-theft. This method is relatively direct and simple, but the anti-theft effect is poor, and it is rarely used alone. The electronic anti-theft technology usually uses a sending terminal such as a ...

AI Technical Summary

Problems solved by technology

The general application scenario is to store the fixed key and identification signal in the remote control and the host in advance, the remote control sends the ciphertext data packet formed by the identification signal encrypted by the fixed key, and the host installed on the car receives and adopts the fixed key. The key decrypts the ciphertext data packet and reads the identification signal, compares the identification signal with the pre-stored identification signal, and then performs corresponding operations such as unlocking or locking according to the comparison result, but the current electronic anti-theft technology adopts The encryption method is single, which makes the anti-interference of the ciphertext data packet poor, and the use of a fixed key without any encryption makes the ciphertext data packet easy to be intercepted and cracked by illegal devices through air capture signals and scanning and tracking methods, and the security is low

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