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Safety control method of automatic driving carrier based on TrustZone

A technology of automatic driving and safety control, applied in the direction of control device, automatic starting device, image enhancement, etc., can solve the problems of affecting the safety of passengers and others, unable to make evasive response, unable to detect network attacks, etc., to reduce work Quantity, reduce the possibility of loss of control, and ensure the effect of safety

Inactive Publication Date: 2020-05-29
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the existing technology cannot detect that it is being attacked by the network, so that it cannot make any evasive response
In more serious cases, safety issues that affect the safety of passengers and others

Method used

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  • Safety control method of automatic driving carrier based on TrustZone
  • Safety control method of automatic driving carrier based on TrustZone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A security control method for an autonomous driving vehicle based on TrustZone, such as figure 1 shown, including the following steps:

[0047](1) Collect data in real time and send it to an untrusted domain; data refers to the real-time data obtained by sensors and the control data of the network control center. The control data refers to the control request command issued by the network control center, including timestamp and res; for example, the image information obtained by multiple cameras at a certain moment, and the position information of the camera that obtained the image on the vehicle.

[0048] In step (1), the data is collected in real time by a data collection device, and the data collection device refers to a sensor, a sensor camera, a millimeter-wave radar and a laser radar.

[0049] (2) In the non-trusted domain, perform preprocessing and persistence operations on the data sent in step (1) in sequence;

[0050] The main purpose of the preprocessing op...

Embodiment 2

[0067] According to the security control method of a TrustZone-based self-driving vehicle described in Embodiment 1, the difference is that:

[0068] Step (4), comprising steps as follows:

[0069] a. Whenever the vehicle receives a message, res is obtained according to the timestamp sent by the network control center and the nonce, length, and signature information in the vehicle memory. The calculation formula of res is shown in formula (I):

[0070] res=MD5(nonce[timestamp%length]+signature)(I)

[0071] In formula (I), MD5 is an encryption algorithm; signature refers to the unique identifier of the vehicle, and nonce refers to a set of random numbers generated using signature as a random number seed, and both the vehicle and the server have the same copy. length refers to the length of a set of random number nonce;

[0072] b. Compare the res obtained in step a with the res sent by the network control center. If they are consistent, it is confirmed that the message comes ...

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Abstract

The invention relates to a safety control method of an automatic driving carrier based on TrustZone. The safety control method comprises the following steps: (1) acquiring data in real time and sending the data to an untrusted domain; (2) in a non-trusted domain, performing preprocessing operation and persistence operation in sequence; (3) performing encryption in the non-trusted domain, adding adata source verification identifier, and sending the data source verification identifier to the trusted domain; (4) in the credible domain, verifying the data source according to a data source verification algorithm, judging whether the data is safe or not: if so, entering the step (5), and otherwise, sending an alarm by the credible domain to require a user to manually operate or park to avoid risks; (5) in the credible domain, decrypting the data, and controlling the automatic driving carrier through the decrypted data. According to the invention, the possibility that the automatic driving vehicle is out of control when being attacked by a network is reduced; the energy consumption of the automatic driving carrier is reduced to a great extent; and the calculation efficiency of the systemis practically guaranteed.

Description

technical field [0001] The invention relates to a safety control method, in particular to a safety control method of an automatic driving vehicle based on TrustZone. Background technique [0002] TrustZone conceptually divides hardware and software resources running a trusted execution environment into secure and non-secure worlds, and all operations that need to be kept secret are performed in the secure world (such as fingerprint identification, password processing, data encryption and decryption, security authentication, etc.) , and the rest of the operations are performed in the non-secure world (such as the user operating system, various applications, etc.), and the secure world and the non-secure world are converted through a mode called Monitor Mode. At present, trustzone is mainly applied to mobile devices such as mobile phones and tablets. Since the automatic driving technology gradually tends to adopt the low-power arm architecture, it is possible to use trustzone ...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L29/08G06K9/00G06T5/00B60W50/00B60T7/12
CPCH04L63/0435H04L63/1416H04L63/123H04L63/126H04L67/12B60W50/0098B60T7/12B60W2050/0043G06V40/103G06V20/58G06T5/00
Inventor 戴鸿君李彬
Owner SHANDONG UNIV