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Method and system for verifying legality of data in diagnostic flashing process

A legality verification and process data technology, which is applied in the legality verification method and system field of diagnostic flashing process data, can solve the problems that cannot guarantee that the files to be flashed come from legal and valid sources, function abnormally, and cannot be operated.

Inactive Publication Date: 2020-11-13
SOUEAST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, when the ECU controller updates the application program data through the bus diagnostic flashing method, or when updating the data through the OTA method, due to the influence of the storage and transfer of the flashing file, it cannot be guaranteed that the file to be flashed is reliable and is from legally sourced
If this kind of flashing file is used, even if the ECU diagnoses flashing successfully, it will have abnormal functions or even fail to operate.

Method used

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  • Method and system for verifying legality of data in diagnostic flashing process
  • Method and system for verifying legality of data in diagnostic flashing process

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Embodiment Construction

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0028] Such as figure 1 or figure 2 As shown, the present invention discloses a method for verifying the legitimacy of diagnostic brushing process data, which includes the following steps:

[0029] Step 1. On the back-end server platform, combine the file to be flashed with a randomly given random number, and use an encryption algorithm to obtain a fixed-length hash value;

[0030] Step 2, combine the fixed-length hash value with the assigned private key, and use the public key algorithm to calculate the signature;

[0031] Step 3, when the software upgrade is performed, the ECU controller receives the data file to be flashed and the corresponding signat...

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Abstract

The invention discloses a method and a system for verifying legality of data in a diagnostic flashing process. The method comprises the following steps of: performing signature processing on a to-be-flashed file at a source; and then, during diagnosis flashing, enabling an ECU controller to receive the flashing file and the signature corresponding to the correct flashing file, performing back calculation on the file data in the ECU controller to obtain a check value, and comparing the check value with the received signature; if so, indicating that the flashing file is legal, effective and error-free; otherwise, indicating that the file flashing is wrong. According to the method, data security is supplemented for diagnostic flashing, reliability and legality of ECU software upgrading are guaranteed through signature verification, and OTA platform system file data security extension is achieved.

Description

technical field [0001] The invention relates to the field of diagnostic flashing data security in vehicle application technology, in particular to a method and system for verifying the validity of diagnostic flashing process data. Background technique [0002] At present, when the ECU controller updates the application program data through the bus diagnostic flashing method, or when updating the data through the OTA method, due to the influence of the storage and transfer of the flashing file, it cannot be guaranteed that the file to be flashed is reliable and is from legally sourced. If this kind of flashing file is used, even if the ECU diagnoses that flashing is successful, it will have abnormal functions or even fail to operate. Contents of the invention [0003] The object of the present invention is to provide a method and system for verifying the legality of data in the process of diagnosing flashing. [0004] The technical scheme adopted in the present invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/08H04L9/32H04L29/06H04L29/08G06F8/654G06F21/56
CPCG06F21/565G06F8/654H04L9/0869H04L9/3247H04L63/123H04L67/06
Inventor 林营陈炜
Owner SOUEAST