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Method and system for encryption transmission electronic control unit (ECU) objective file

An electronic control unit and target file technology, applied in the field of cryptography, can solve problems such as difficulty in guaranteeing confidentiality, and achieve the effects of low cost, rapid response and convenient operation

Inactive Publication Date: 2013-06-19
BEIQI FOTON MOTOR CO LTD
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The target file of the automotive ECU needs to go through different dissemination links from writing to release, until it is finally loaded into the ECU through the Flash (flash memory) refresh tool. In the existing dissemination process, the target file exists in plain text, and its confidentiality sex is difficult to guarantee

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  • Method and system for encryption transmission electronic control unit (ECU) objective file
  • Method and system for encryption transmission electronic control unit (ECU) objective file

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Embodiment Construction

[0020] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0021] Combine below figure 1 A method for encrypted transmission of an ECU target file according to an embodiment of the present invention is described.

[0022] like figure 1 As shown, the method for encrypting and transmitting the ECU target file according to the embodiment of the present invention includes:

[0023] Step S101, setting an encryption algorithm, generating C source code for encryption and decryption operations, and integrating the C source code and key for decryption into the ECU. Specifically, developers design the ...

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Abstract

The invention provides a method and a system for encryption transmission an electronic control unit (ECU) objective file. The method for encryption transmission the ECU objective file comprises the following steps: setting an encryption algorithm, generating a C source code which is used for encryption operation and decryption operation, and integrating the C source code of the decryption algorithm and a secret key to the ECU; when the objective file is generated, adopting an advanced encryption standard (AES) encryption algorithm which is achieved by C language to encrypt the objective file and to generate the ciphertext of the objective file; using a refreshing tool the objective file which is in a ciphertext form pass through a controller local area network controller area network (CAN) bus, transmitting the ciphertext of the objective file to the ECU; the ECU decrypts the objective file after encryption based on a deciphering algorithm and a secret key to generate the objective file, and storing the objective file into the refreshing tool. The method for encryption transmission the ECU objective file guarantees the objective file to exist in the ciphertext form in a transmission link by encrypting on the generated objective file and deciphering until the objective file is received by the ECU end, and therefore the transmission security of the objective file is greatly improved.

Description

technical field [0001] The invention relates to the field of encryption, in particular to a method and system for encrypting and transmitting an electronic control unit (ECU) target file. Background technique [0002] Automotive ECU (Electronic Control Unit, electronic control unit), also known as "driving computer", "vehicle computer", etc., is a microcontroller dedicated to automobiles. In terms of hardware, ECU usually includes microprocessors, memory, input / output interfaces, analog-to-digital converters, and large-scale integrated circuits such as shaping and driving; in terms of software, the target file is the software carrier that realizes ECU control, including addresses, instructions, etc. information, the ECU can only run normally if the target file is loaded. [0003] The target file of the automotive ECU needs to go through different dissemination links from writing to release, until it is finally loaded into the ECU through the Flash (flash memory) refresh too...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L9/06
Inventor 余军左从兵张春淮严牧
Owner BEIQI FOTON MOTOR CO LTD
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