Method and device for tampering authentication of paper documents

A paper-based document and paper-based technology, applied in character and pattern recognition, instruments, calculations, etc., can solve problems such as slow speed, low accuracy, and inability to accurately locate tampered positions, achieving fast speed, high accuracy, and easy operation The effect of simple process

Active Publication Date: 2018-11-13
北京数科网维技术有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a method and device for tampering and authenticating paper documents based on text digital watermarking, which uses a robust text watermarking algorithm to embed key document information in each character of each page of paper documents to achieve paper document T

Method used

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  • Method and device for tampering authentication of paper documents
  • Method and device for tampering authentication of paper documents
  • Method and device for tampering authentication of paper documents

Examples

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Embodiment Construction

[0046] figure 1 It is a schematic flow chart of the implementation of a paper document tampering authentication method described in the embodiment.

[0047] S101. Extract and store key sensitive data information in the electronic document.

[0048] Important paper documents such as general financial business contracts and legal documents will contain a lot of key sensitive data information, including the unique ID information of electronic documents, page number information, sensitive digital information, the name of Party A and Party B, and one of the contract dates. or more. This information is very important. Once it is illegally tampered with, it will directly lead to excessive economic losses and conflicts. In order to quickly and accurately check whether the key sensitive data information has been tampered with, it needs to be stored in advance, that is, the sensitive data information extracted from the electronic document is stored in the background audit information ...

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Abstract

The invention relates to a method and device for tampering authentication of paper documents. The method comprises the steps of: extracting key sensitive data information from an electronic document and storing; carrying out anti-counterfeiting processing on a seal image in the electronic document; printing and outputting the electronic document and embedding watermark information in the printed and output paper document at the same time; when authenticating the paper document, digitally processing the paper document to obtain digital image content data and carrying out the tampering authentication by utilizing the key sensitive data information and the watermark information; and judging whether the paper document is an original document or not by authenticating the seal image of the paperdocument, wherein the tampering authentication comprises preliminary tampering authentication and deep tampering authentication. Through the method disclosed by the invention, the technical problemsthat the accuracy the low, the speed is low, the tampering position cannot be accurately located, the authentication of the paper documents cannot be accurately carried out and the like in the currentpaper document tampering authentication field are solved.

Description

technical field [0001] The invention belongs to the field of document protection, and relates to a method and device for authenticating paper document tampering. Background technique [0002] With the prosperity and development of financial business, important documents such as paper-based financial business contracts and legal documents (subsequently referred to as paper documents, and corresponding electronic documents as electronic documents) are widely used as contract proofs. But at the same time, with the rapid popularization of digital printing and image reproduction equipment, the authenticity and integrity of important paper documents have also been challenged unprecedentedly. Every year, due to the illegal tampering of paper documents, the cases of financial entities being held accountable and causing huge losses occur from time to time, which has brought bad effects on social organizations and individuals. [0003] Under normal circumstances, the ways that paper ...

Claims

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Application Information

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IPC IPC(8): G06T1/00G06K9/20
CPCG06T1/0092G06V10/22
Inventor 李晓妮
Owner 北京数科网维技术有限责任公司
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