AndroidAuto security communication method and system based on TrustZone Technology

Abstract

The invention provides an AndroidAuto security communication method and system based on a TrustZone Technology. The method comprises the following steps: step 1, establishing a communication channel; and step 2, real-timely extracting the communication content, wherein the step 1 includes: step 1.1, enabling a vehicle-mounted terminal to initiate a connection request to AndroidAuto through an encryption information extraction module; step 1.2, establishing a communication channel between the encryption information extraction module and AndroidAuto; and step 1.3, establishing a communication channel between the vehicle-mounted terminal and the encryption information extraction module; the step 2 includes: step 2.1, enabling the encryption information extraction module to receive and verify the communication content sent by the vehicle-mounted terminal; step 2.2, enabling AndroidAuto to receive and verify the communication content sent by the encryption information extraction module; and step 2.3, ensuring that AndroidAuto sends the data to the corresponding application for processing and the information transfer is completed. According to the AndroidAuto security communication method and system provided by the invention, all communication contents between AndroidAuto and the vehicle-mounted systems can be intercepted, and meanwhile, the real-time security audit of the communication contents can be carried out according to the user-defined security criteria.

Description

technical field [0001] The invention relates to the field of mobile platform security. Specifically, an AndroidAuto secure communication method and system based on TrustZone technology is mainly proposed. Background technique [0002] The in-vehicle system has a long history. Many common car manufacturers have built their own developed or embedded third-party in-vehicle systems in their cars. In order to make up for the many defects of traditional vehicle systems, various intelligent vehicle systems combined with smartphones have come out in recent years. This type of vehicle-mounted system connects the smartphone to the vehicle-mounted platform through WIFI or USB data lines, and provides diversified and intelligent services for the vehicle-mounted platform with the help of the smartphone. Among these in-vehicle systems, Android Auto proposed by Google in 2014 can be said to be one of the representatives. This technology connects the Android phone to the in-vehicle system...

AI Technical Summary

Problems solved by technology

[0013] 1.3.2 Shortcomings of the second prior art

[0014] The disadvantage of this technology is that it only judges whether an application is malicious through static analysis. However, for malicious applications of Android Auto, it does not directly call a series of system functions to complete malicious behaviors.

Instead, it directly sends malicious information to the vehicle terminal, thereby interfering with or even directly breaking the vehicle terminal, and this malicious information cannot be detected by static analysis before the program is installed or running, so that the solution cannot identify malicious Android Auto. application

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