RU2482542C2 - Method of authenticating original paper documents - Google Patents

Abstract

FIELD: physics.

SUBSTANCE: method involves one step - a procedure for obtaining and recording the original document for certification, and a second step - a procedure for authenticating said document when presented as proof of the original quality.

EFFECT: simple authentication without applying identification features and high reliability of protective properties of documents due the dual nature of elements of physical and digital information, one of which is reference to the other, which cannot be corrected due to the risk of losing proof.

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Description

The development of electronic technologies has led to the emergence of electronic document management and multifunctional programs for creating documents, their movement and control over execution. At the same time, paper documents are still of great value, and “electronic archives” form a duplicate system. The transition to a unified electronic document management system necessitates the establishment of the authenticity of a paper document subject to movement, its electronic original. The scope of the present invention is a system for establishing the similarity (authenticity) of a paper document when it is received by the executor for reviewing a digital copy of its original, agreed upon, signed and approved by the responsible persons, the original, once entered into the electronic database.

Currently, to establish the authenticity of documents, they are used as traditional ways of protecting documents - watermarks, barcodes, holograms [Larionov V.G. How to protect yourself from fake? (Overview of technological means of protecting securities, documents and branded goods from fraud and counterfeiting); patent EP 0161181], as well as more advanced methods of protection based on the use of authenticity markers [Arkhipov O.P., Arkhipov P.O., Borodina L.N. Technology for creating unique rasters. - M .: IPI RAS, 2006. - 76 p .; patent FR 2765014] and special principles of printing, for example bubble printers [patent No. EP 1252616].

The main disadvantage of traditional methods and means of protecting documents is the ability to reproduce the attribute used to protect the document and falsify information (the content of the document). The main disadvantages of methods that use authenticity markers include: the need to use specialized equipment for accurate scanning and recognition of both black-and-white and color markers; in the case of using color markers - the use of printers only with new cartridges, since after refilling they change the color tone. The main disadvantage of methods using special printing principles is the need to use specialized, expensive software products and scanners.

The closest in technical essence to the claimed method and selected as a prototype is a method of certification and subsequent authentication of the originals of paper and digital documents for evidence (RF patent No. 2409861: IPC G06K 9/00), which consists of the following steps :

the original document or information, the integrity of the contents of which is certified by the publisher, associatively associates with a unique and non-reproducible authenticator composing the seal, previously registered in the centralized database BD1 of a reliable third party and indicating the ownership of the publisher or its beneficiary to the original document or information that must be certified;

the aforementioned original of a document or information associated with the aforementioned unique and irreproducible authenticator is digitized using an optoelectronic device that allows in one operation to link the contents of the document or information with the aforementioned unique and irreproducible authenticator, the reader being connected directly or via a network to a secure, local or remote computer recording system BD2, where all added information is marked with strain date / time, after which it is inaccessible to change and overwrite;

the original document or information and the authenticator associated with it are sent and registered in the registration system DB 2;

in order to subsequently prove the authenticity of the original document or the original information, a comparison is made between the aforementioned originals and their logical copies stored in an archived form in the BD2 registration system at the address of an associated authenticator, or by comparing the compressed total product obtained as a result of applying the hash -functions integrating the contents, date and ownership stored in an archived form in the database or for isyvayuschey system can not be changed, and overwrite the copy with the original document;

in this case, the associative unique and non-reproducible authenticator is a bubble seal.

With such a combination of the described elements and relationships, it is impossible for the attacker to reproduce the document, since the applied bubble seal is unique and not repeatable.

However, the prototype device has the following disadvantages:

1) the need to apply a bubble seal to the document that violates the integrity of the document from a legal point of view;

2) the need to use specialized expensive devices for applying bubble printing and scanners to read them.

The widespread use of conventional (flatbed) scanners and laser printers actualizes the task of researching methods for establishing the similarity (authenticity) of documents without applying special identification features and using them as additional means of protecting paper documents from forgery in operational document management.

The objective of the invention is to develop a method for establishing the authenticity of the originals of paper documents, which allows to establish the authenticity of documents without applying special identification features.

This problem is solved by the fact that in the method of establishing the authenticity of the originals of paper documents, which includes the following steps:

the original document, the integrity of the contents of which is certified by the publisher, associatively associates with a unique and non-reproducible authenticator previously registered in the centralized database BD1 of a reliable third party and indicating the ownership of the publisher or its beneficiary to the original document that must be certified;

the aforementioned original document associated with the aforementioned unique and irreproducible authenticator is digitized using an optoelectronic device, the reader connected directly or via a network to a secure, local or remote computer recording system BD2, where all added information is marked with a date / time stamp, after which It is inaccessible to change and overwrite;

the original document and the authenticator associated with it are sent and registered in the registration system DB2;

in order to subsequently prove the authenticity of the original document, a comparison is made between the aforementioned original and its logical copies stored in an archived form in the DB2 registration system at the address of an associated authenticator, or by comparing the compressed total product obtained as a result of applying the hash function, integrating the contents, date and ownership of the data stored in an archived form in a database or recording system, not admission altering, overwriting and copying, with the original document;

according to the invention, after the original document is digitized additionally by means of a reader, the number of lines, the number and arrangement of paragraph lines, the number and arrangement of incomplete lines, the number of words and their arrangement along lines, the number of short words and their arrangement along lines, the number of vertical elements and holes in the letters of the text of the document and their placement in the document; and as an associative unique and irreproducible authenticator, a combination of parameters is used: the number of lines, the number and arrangement of paragraph lines, the number and location of incomplete lines, the number of words and their arrangement along lines, the number of short words and their arrangement along lines, the number of vertical elements and holes in the letters of the text of the document and their placement in the document.

The listed new set of essential features provides the ability to establish the authenticity of the original paper documents without applying special identification features based on morphological processing of images presented in graphic format.

The analysis of the prior art made it possible to establish that analogues that are characterized by a combination of features that are identical to all the features of the claimed method of establishing the authenticity of the originals of paper documents are absent, which indicates the compliance of the invention with the condition of patentability “novelty”.

Search results for known solutions in this and related fields of technology in order to identify features that match the distinctive features of the claimed object from the prototype showed that they do not follow explicitly from the prior art. The prior art also did not reveal the popularity of the impact provided by the essential features of the claimed invention, the transformations on the achievement of the specified technical result. Therefore, the claimed invention meets the condition of patentability "inventive step".

The inventive method is illustrated by drawings, which show:

figure 1 is a generalized scheme for establishing the authenticity of documents;

figure 2 is a comparison chart of the content of two copies of the document;

figure 3 - the results of comparing the content of two copies of the document according to the proposed method.

When implementing the inventive method (figure 1), two independent databases are used. The first database BD1 (9) is a reliable third-party database in which the confirming parts of the unique authenticator are recorded, which will be associated with the original documents (3) or with information that requires authentication, with a possible assignment to a person and / or organization (institution). Another DB2 database is a protected, local or remote computer recording system (10), in which all added information is stamped with a date / time stamp, after which it is inaccessible to change and overwrite.

The scanning optoelectronic device (7) of the scanning type makes it possible to simultaneously obtain a physical document that is made by employees (2) and certified by the publisher (1), and a unique authenticator associated with it.

A set of parameters is used as an associative unique and irreproducible authenticator assigned to a document when it is scanned: number of lines, number and arrangement of paragraph lines, number and location of incomplete lines, number of words and their arrangement along lines, number of short words and their arrangement across lines, the number of vertical elements and holes in the letters of the text of the document and their placement in the document.

The assistant (4) of the publisher (1) places the original document (3) in the first reader optoelectronic device (7) connected to BD1 (9) in order to transmit a unique authenticator, which is used for the document or for information that must be certified . The second reader optoelectronic device (11) is connected to the DB2 (10) in order to transmit the original documents (3) or copies of the document (5) received by the responsible managers (8) from the courier (6), and unique authenticators associated with them, read and certified, in order to record and stamp the date / time stamp.

With regard to the compilation of evidence that the document is believed to be authentic, proceed as follows:

the original document (3), the integrity of the contents of which is certified by the publisher (1), associatively associates with a unique and non-reproducible authenticator, indicating the ownership of the publisher (1) or its beneficiary to the original document (3), which must be certified;

using the optoelectronic reader (7), digitize the aforementioned original document (3), select the number of lines, the number and arrangement of paragraph lines, the number and arrangement of incomplete lines, the number of words and their arrangement in lines, the number of short words and their arrangement in lines, the number of vertical elements and holes in the letters of the text of the document and their placement in the document, determine these parameters as an authenticator associated with the original document (3), send the authenticator to DB1 ( 9);

using the second optoelectronic reader (11), connected directly or via a network to a secure, local or remote computer recording system BD2 (10), send the original document (3) or a copy of the document (5) and the associated authenticator in BD2 (10) ), where all added information is recorded and stamped with a date / time, after which it is inaccessible to change and overwrite;

for the subsequent proof of the authenticity of the original document (3), a comparison is made between the above authenticators of the original and its logical copies stored in archived form in the registration system BD2 (10) at the address of the associated authenticator from BD1 (9).

The claimed method of establishing the authenticity of the originals of paper documents allows you to establish the authenticity of documents without applying special identification features.

The validity of the theoretical assumptions was checked using simulation modeling using MATLAB in the engineering calculation environment using its Image Toolbox application according to the scheme shown in figure 2, under the following conditions:

to establish the authenticity of documents, scanned images of one page of text were used - 4 paragraphs; 32 rows and 181 words (the first row of the table in figure 3);

to establish the significance of the set of parameters that make up the authenticator, a 20-fold scan of the original was carried out (the results of 5 experiments are presented in 2-6 rows of the table in figure 3);

for authentication, copies of the above document with various changes in the content were used (Fig. 3 shows the results of replacing the last sentence, the third paragraph of the tex and the joint replacement of the last sentence and the third paragraph.

The significance of these independent variables was determined relative to the similarity coefficient:

where N _copy is the total number of characters in the text of the document received and scanned by the executor (paper document);

N _Original - the total number of characters in the text of a document recorded in the organization’s database after the document has passed all approvals, signatures and approvals by responsible persons (digital copy of the original);

- число символов в тексте бумажного документа, отличающихся от символов текста цифровой копии оригинала.

- the number of characters in the text of the paper document that differ from the characters in the text of the digital copy of the original.

When forming conclusions on the correspondence of the content of the document to the original, the study used the standard error criterion.

From the above data (figure 3) it follows that the authentication of the document is possible on the basis of morphological analysis of digitized documents. The specified result is achieved for all situations under consideration, which indicates the possibility of achieving the claimed technical result.

Claims (1)

The method of establishing the authenticity of the original paper documents, namely, that the original document, the integrity of the contents of which is certified by the publisher, is associated with a unique and non-reproducible authenticator, indicating the ownership of the publisher or its beneficiary to the original document, which must be certified, characterized in that by reading optoelectronic devices digitize the aforementioned original document, highlight the number of lines in the document, the number and location of the spacing lines, the number and location of incomplete lines, the number of words and their arrangement in lines, the number of short words and their arrangement in lines, the number of vertical elements and holes in the letters of the text of the document and their placement in the document, determine these parameters as an authenticator associated with with the original document, the authenticator is sent to DB1 using a second reading optoelectronic device connected directly or via a network to a secure, local or remote computer register To the DB2 system, the original document and the associated authenticator are sent to DB2, where all added information is recorded and stamped with a date / time stamp, after which it is inaccessible for changing and rewriting, for subsequent proof of the authenticity of the original document, comparison and comparison between the above authenticators of the original and its logical copies stored in archived form in the registration system BD2 at the address of the associated authentication Ator of BD1.

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