Signature of file as well as calibration method and device of file

A verification method and signature device technology, applied in the field of information security, can solve problems such as the inability to guarantee the security and integrity of firmware programs, and achieve the effect of reducing the risk of systemic crashes and ensuring security and integrity

Inactive Publication Date: 2018-09-28
ZHEJIANG CHINT INSTR & METER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above analysis, the embodiment of the present invention proposes a file signature and verification method and device to solve the problem that the existing technology cannot guarantee the security and integrity of the installed firmware program

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  • Signature of file as well as calibration method and device of file
  • Signature of file as well as calibration method and device of file
  • Signature of file as well as calibration method and device of file

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Embodiment Construction

[0027] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "first", "second" and so on are only used for descriptive purposes, and should not be understood as indicating or implying relative importance.

[0029] In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as there is no conflict with each other.

[0030] The embodiment of the present invention provides a method for signing f...

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Abstract

The embodiment of the invention provides a signature of a file as well as a calibration method and device of the file. The method comprises the following steps: adding a private key of the file into ato-be-signed file to generate a temporary file including the private key of the file, and calculating the temporary file so as to acquire first digital signature information; adding the acquired first digital signature information into the to-be-signed file so as to generate the file with signature information; acquiring a to-be-calibrated file with the first digital signature information; addingthe private key of the file into the to-be-calibrated file, generating the to-be-calibrated file including the private key of the file, and calculating the to-be-calibrated file including the privatekey of the file to obtain second digital signature information; and comparing the second digital signature information with the first digital signature information, and judging that the to-be-calibrated file is an available file when the second digital signature information is identical to the first digital signature information. Through signature and calibration of the file, the security and thecompleteness of an installed firmware program are ensured, and the risk causing systemic collapse is reduced.

Description

technical field [0001] The invention relates to the technical field of information security, in particular to a file signature and verification method and device. Background technique [0002] The energy meter is an important part of the power grid. The normal operation of the energy meter is the basis for the normal operation of the power grid. The security protection of the firmware program of the energy meter is the guarantee for the normal operation of the energy meter. [0003] At present, most electric energy meters directly install and run the firmware program, and the version of the installed electric energy meter firmware program can only be verified by reading the parameters of the electric energy meter during operation. It can be seen that the above process is only for the installed firmware program Performing security checks may easily cause other companies' firmware programs or our company's firmware programs that have been tampered with to be installed in our c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/60G06F21/64
CPCG06F21/602G06F21/64
Inventor 张龙朱丹阳
Owner ZHEJIANG CHINT INSTR & METER
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