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A tamper-proof method for paper documents

A paper document, tamper-proof technology, applied in electromagnetic radiation induction, using a printer for visual demonstration, etc., can solve problems such as verifying that paper documents have been tampered, and achieve the effect of ensuring security and wide development prospects.

Inactive Publication Date: 2015-11-25
HENAN UNIVERSITY
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Problems solved by technology

[0003] The purpose of the present invention is to solve the existing problems of anti-tampering of paper documents, and propose an efficient method for anti-tampering of paper documents, which utilizes key technologies such as data coding, two-dimensional barcodes, and image recognition to design safe and reliable paper documents. The document anti-tampering model can effectively solve the problem of verifying that paper documents have been tampered with, greatly improving the reliability of paper documents

Method used

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specific Embodiment approach

[0030] refer to figure 1 , figure 2 . This paper invents a tamper-proof method for paper documents, which is mainly used to verify the problem of paper documents being tampered with, so that the reliability of paper documents has been greatly improved. The specific implementation process is as follows:

[0031] 1) Set the structure information of the data protection area, define a binary group PA, the binary group is composed of the protected area identifier Pfi and the coordinate information set Psi of the protected area, Pfi is the i-th protected area, and Psi is the i-th protected area The coordinate set, denoted as {Pfi,Psi}, is used to store the identification and coordinate information set of important data;

[0032] 2) Encrypt the important data specified in the protected area information {Pfi, Psi} with the encryption rule E1 to obtain the encrypted data ENC of the protected area;

[0033] 3) Divide the binary byte stream string of the encrypted data ENC into group...

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Abstract

The invention relates to an efficient temper-proofing method of a paper document, and is applied to a temper-proofing verification system of the paper document. The method of the invention comprises first building a paper document printing module, setting a data protection area, encrypting and encoding data in the protection area, carrying out a binary negative code summation on the encoded data in the protection area to generate a check code, generating a two-dimensional bar code for the paper document, printing out the paper document, when the paper document is verified, scanning the paper document to obtain an image file of the paper document, reading information of the two-dimensional bar code, acquiring information of the protection area, identifying and acquiring important data in the paper document by using an OCR technology, acquiring the check code from the two-dimensional bar code, and verifying the data. The data verification method provided by the invention has quite high efficiency and preparation, satisfactorily solves the problem that the important information in the paper document is tempered, and promises the data security of the paper document.

Description

technical field [0001] The invention relates to an efficient anti-tampering method for paper documents, which is suitable for an anti-tampering verification system of paper documents. Background technique [0002] In recent years, with the application of computers, the development of Internet and multimedia information technology, and the increasing degree of informatization, documents have been gradually applied to various fields of society, and document security has become more and more important. The authenticity verification requirements of document content also increased. In order to prevent tampering, electronic documents often adopt methods such as digital authentication or digital watermarking. Digital watermark technology is a hot research in the field of international information security. It is to embed digital watermark in multimedia information to provide a new solution for anti-counterfeiting, anti-tampering, authentication, data security and integrity guarant...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K15/02G06K7/10
Inventor 宋亚林武相军季超庞子龙张缨
Owner HENAN UNIVERSITY
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