Vehicle-mounted program file encryption method and device

A program file and encryption method technology, which is applied to encryption devices with shift registers/memory, secure communication devices, computer security devices, etc. Tampering, etc.

Active Publication Date: 2018-07-27
컨템포러리엠퍼렉스테크놀로지씨오리미티드
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The format of the program file downloaded by the electronic control unit is open, and the content is plain text, which is relatively easy to be tampered with
After the electronic control unit downloads the program file, it is impossible to judge whether the program file has been tampered with
If the electronic control unit downloads the tampered program file, it will cause hidden dangers to the safety of the car and reduce the safety of car control

Method used

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  • Vehicle-mounted program file encryption method and device
  • Vehicle-mounted program file encryption method and device
  • Vehicle-mounted program file encryption method and device

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Embodiment Construction

[0022] Features and exemplary embodiments of various aspects of the invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by showing examples of the present invention. The present invention is by no means limited to any specific configurations and algorithms presented below, but covers any modification, substitution and improvement of elements, components and algorithms without departing from the spirit of the invention. In the drawings and the following description, well-known structures and techniques have not been shown in order to avoid unnecessarily obscuring the present invention.

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Abstract

The invention provides a vehicle-mounted program file encryption method and device, related to the field of electronic and electrical. The vehicle-mounted program file encryption method comprises thefollowing steps: dividing the data in the vehicle-mounted program file into more than one data fragment; obtaining message authentication codes of the more than one data fragment according to the morethan one data fragment; using a key and the advanced encryption standard AES to encrypt the more than one data fragment; generating more than one encrypted sub-file based on the more than one encrypted data fragment and the message authentication codes of the more than one data fragment, wherein each encrypted sub-file includes one encrypted data fragment and the message authentication code of one data fragment; and combining the more than one encrypted sub-file to obtain the encrypted vehicle-mounted program file according to the more than one encrypted sub-file. The vehicle-mounted programfile encryption method and device provided by the embodiment of the invention can improve the security of vehicle control.

Description

technical field [0001] The invention relates to the field of electronics and electricity, in particular to a method and device for encrypting vehicle-mounted program files. Background technique [0002] Electronic Control Unit (ECU) is widely used in automobiles. The electronic control unit can perform calculations according to the collected parameter information in combination with the program stored in the electronic control unit. The result of the calculation is converted into a control signal, so as to realize the overall control of the vehicle by the electronic control unit. [0003] In order to meet various requirements of users for vehicle control functions, the electronic control unit needs to download various programs. The format of the program file downloaded by the electronic control unit is open, and the content is plain text, which is relatively easy to be tampered with. After the electronic control unit downloads the program file, it cannot be judged whether...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L9/06H04L9/08G06F21/62
CPCG06F21/6218H04L9/0631H04L9/0863H04L63/0428
Inventor 陈其锋黄信
Owner 컨템포러리엠퍼렉스테크놀로지씨오리미티드
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