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Electronic document protection method based on locked signature

A technology for electronic documents and signature files, applied in the direction of digital data protection, etc., can solve problems such as difficult to determine certificate storage, business archiving, etc.

Pending Publication Date: 2022-03-22
CHINA ELECTRONICS STANDARDIZATION INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the event of misuse or leakage, it is difficult to determine the responsibilities of all parties such as evidence storage and business archiving

Method used

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  • Electronic document protection method based on locked signature
  • Electronic document protection method based on locked signature
  • Electronic document protection method based on locked signature

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0025] The principles and features of the present invention are described below, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0026] Such as figure 1 As shown, the following steps are included in this implementation example:

[0027] The present invention comprises the following steps:

[0028] A Obtain the relevant information of the document to be signed, check whether the original document has the signature (or signature) and lock signature of the issuing authority, and whether the verification certificate corresponding to the signature (or signature) and lock signature is the same certificate or certifiable are the same person or institution;

[0029] B verifies the signature (or signature) and locked signature in the original electronic document, and creates the electronic document generation and annotation method information through the document generation system based on the ...

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PUM

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Abstract

The invention discloses an electronic document protection method based on a locked signature, and provides a method for verifying whether an electronic document remains true, complete and untampered after being sent, after a receiver receives the electronic document, not only a signature (or signature) and the locked signature in the document need to be verified, but also the electronic document is not tampered after being sent. Whether the locking signature and the last signature (or signature) are added by the same operator is checked, and only if the document has the signature (or signature) and the corresponding locking signature at the same time, the last operator (which can be generated, added or subjected to other operations) has all responsibilities on the document; the document receiver reflected in the operation is a document owner according with the original meaning of the operator, otherwise, only the signed part of the document is credible, and the signed part cannot be used as a certificate for determining whether the document receiver is a reasonable document controller and owner or not.

Description

technical field [0001] The invention belongs to the technical field of file processing, in particular to an electronic document protection method based on a locking signature. Background technique [0002] Electronic documents have become the inevitable product of the in-depth development of informatization. Format documents are a form of electronic documents. Due to the characteristics of cross-media and cross-platform, layout documents are more and more widely used in various scenarios, and their research is becoming more and more important. important. my country's independent "Electronic File Storage and Exchange Format Format Document", including file structure, basic structure, page description, graphics, images, text, video, compound objects, actions, annotations, custom indexing, extended information, digital signatures, Version, attachment, etc., the signature mechanism requires that the signature description file be derived from the signature entry file, and the sig...

Claims

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Application Information

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IPC IPC(8): G06F21/64
CPCG06F21/64
Inventor 陈亚军王雷彭革非
Owner CHINA ELECTRONICS STANDARDIZATION INST