CN102722737A - Temper-proofing method of paper document - Google Patents
Temper-proofing method of paper document Download PDFInfo
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- CN102722737A CN102722737A CN2012101567833A CN201210156783A CN102722737A CN 102722737 A CN102722737 A CN 102722737A CN 2012101567833 A CN2012101567833 A CN 2012101567833A CN 201210156783 A CN201210156783 A CN 201210156783A CN 102722737 A CN102722737 A CN 102722737A
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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
The present invention relates to a kind of efficient paper document tamper resistant method, be applicable to the anti-tamper verification system of paper document.
Background technology
In recent years; Along with the development of computer application, internet and multimedia information technology and continuing to increase of the level of informatization; Document is applied to fields of society gradually, and it is more and more important that document security seems, the authenticity verification demand of document content also increases thereupon.Electronic document is distorted in order to prevent, often adopts modes such as digital signature or digital watermarking.Digital watermark technology is a hot research of international information security fields; Be embed digital watermark in multimedia messages, for aspects such as false proof, anti-tamper, authentication, data security guarantee and the integrity ensuring of digital medium information provide a kind of new solution route.But also do not prevent the method that paper document is distorted at present, cause the authenticity of paper document, reliability to reduce greatly.
Summary of the invention
The objective of the invention is to problem to the existing anti-tamper existence of paper document; A kind of efficient paper document tamper resistant method is proposed; It utilizes gordian techniquies such as digital coding, two-dimensional bar, image recognition; Design the anti-tamper model of safe and reliable paper document, can solve the problem that the checking paper document is distorted effectively, made the reliability of paper document be greatly improved.
The technical scheme that the present invention adopted:
A kind of paper document tamper resistant method is at first set up the paper document print module, and the data protection zone is set; The protected location data are carried out scrambled, and the protected location data behind the coding are carried out the one's complement summation and are generated check code, generate the two-dimensional bar in the paper document; The printout paper document, during the verification paper document, scanning obtains the paper document image file; Read two-dimensional bar information, the area information that is protected uses the identification of OCR technology to obtain the significant data in the paper document; From described two-dimensional bar, obtain check code, carry out data check.The anti-tamper implementation procedure of described paper document is following:
1) data protection plot structure information is set, defines a doublet, doublet is made up of the coordinate information set of protected location sign and protected location, is used for storing the sign and the coordinate information of significant data;
2) data designated in the protected location is carried out scrambled with a kind of encryption rule;
3) encrypted encoded data is carried out 24 one's complement summations, obtain the check code of document;
4) use data protection plot structure information, encrypted encoded data and check code to generate two-dimensional bar;
5) printout paper document;
6) the scanning paper document obtains image file;
7) the be protected enciphered message of plot structure information, check code and protected location data of two-dimensional bar information in the reading images file can obtain the raw data of information through deciphering;
8) use the protected location structural information, utilize the identification of OCR technology to obtain the significant data information in the paper document, identical scrambled rule is carried out scrambled with document printing the time;
9) utilize the data encryption coding obtain and the check code in the two-dimensional bar to carry out verification;
10) if verification is unsuccessful, the protected location primary data information (pdi) that uses deciphering to obtain carries out the manual secondary verification.
The tamper resistant method of described paper document carries out one's complement summation to the protected location data, to result's sign indicating number of negating, generates check code, and this check code generative process is following:
1) with the byte stream string of protected location data encryption coding, is divided into one group to per 24 an of high position, is designated as a word, 24 high-order benefits 0 of less than by low level;
2) all binary words are carried out additive operation, and the carry of most significant digit is to lowest order;
3) obtain with carry out the negate computing, obtain check code.
The tamper resistant method of described paper document carries out scrambled to the data after the OCR identification and carries out one's complement with check code and sue for peace, and carries out data check, and this data check process is following:
1) with the scrambled after the OCR identification (the scrambled rule is with generating check code) 2 system byte stream strings, be divided into one group by low level to per 24 an of high position, be designated as a word, 24 high positions of less than mend 0;
2) all binary words and check code carry out additive operation, and the carry of most significant digit is to lowest order;
3) obtain with carry out the negate computing, if the result be 0 the expression pass through, non-0 the expression do not pass through;
4) if verification is failed, the backup data information that then reads in the two-dimensional bar carries out the manual secondary verification.
Useful good effect of the present invention
1, the tamper resistant method of paper document of the present invention, the data verification method that provides have suitable efficient and accuracy, can solve the problem that important information is distorted in the paper document preferably, can guarantee safety of data in the paper document.
2, paper document tamper resistant method of the present invention adopts improved 24 one's complement summation methods, make data check have high efficiency, and 24 binary word length makes the collision rate of data check reach 1/224, can satisfy the requirement of daily paper document.
3, it is big to the present invention is directed to the present level of informatization, and paper document still is widely used, but lacks the problems such as effective means to the paper document authenticity verification; Anti-tamper model towards paper document has been proposed; Protected in the paper document important information not distorted fast and effectively, the development prospect of this model is wider, on this model based; Further study, can reach the purposes such as reparation of paper document.
Description of drawings
Fig. 1: process flow diagram of the present invention;
Fig. 2: check code of the present invention generates and checking procedure figure.
Embodiment
Describe embodiment of the present invention in detail below in conjunction with accompanying drawing
With reference to Fig. 1, Fig. 2.This paper invents the tamper resistant method of paper document, is mainly used in the problem that the checking paper document is distorted, and makes the reliability of paper document be greatly improved, and its concrete implementation procedure is following:
1) data protection plot structure information is set; Define a doublet PA, doublet is made up of the coordinate information set Psi of protected location sign Pfi and protected location, and Pfi is i protected location; Psi is the coordinate set of i protected location; Note is done { Pfi, Psi}, the sign and the coordinate information set that are used for storing significant data;
2) with protected location information Pfi, the significant data of appointment is encrypted with encryption rule E1 among the Psi}, obtains scrambled ENC;
3) with the 2 system byte stream strings of scrambled ENC, be divided into one group by low level to per 24 an of high position, each group is designated as a word, 24 high-order benefits 0 of less than; All 24 binary words are carried out additive operation, and the carry of most significant digit is to lowest order; Obtain with carry out the negate computing, obtain check code CC.
4) significant data ENC and the check code CC with data protection plot structure information PA, encryption generates two-dimensional bar (QR) TBC;
5) printout paper document;
6) the scanning paper document obtains image file;
7) two-dimensional bar information TBC plot structure information PAB, check code CCB and the deciphering district primary data information (pdi) VData that is protected that is protected in the reading images file puts into memory array;
8) use coordinate information among the structural information PAB of protected location, utilize the identification of OCR technology needing in the paper document to obtain the significant data of checking, E1 encrypts with encryption rule, the data encryption coding ENC2 after obtaining discerning;
9) with the 2 system byte stream strings of the data encryption coding ENC2 after the OCR identification, be divided into one group by low level to per 24 an of high position, each group is designated as a word, 24 high-order benefits 0 of less than; All 24 binary words are carried out additive operation, carry out additive operation with check code CCB again, and during all additive operations, the carry of most significant digit is to lowest order; Obtain with carry out the negate computing, if the result equal 0 the expression pass through, non-0 the expression do not pass through.
10) if check results is not 0, i.e. verification failure uses protected location primary data information (pdi) VData to carry out the manual secondary verification.
Claims (3)
1. a paper document tamper resistant method is at first set up the paper document print module, and the data protection zone is set; The protected location data are carried out scrambled, and the protected location data behind the coding are carried out the one's complement summation and are generated check code, generate the two-dimensional bar in the paper document; The printout paper document, during the verification paper document, scanning obtains the paper document image file; Read two-dimensional bar information, the area information that is protected uses the identification of OCR technology to obtain the significant data in the paper document; From described two-dimensional bar, obtain check code, carry out data check, the anti-tamper implementation procedure of described paper document is following:
1) data protection plot structure information is set, defines a doublet, doublet is made up of the coordinate information set of protected location sign and protected location, is used for storing the sign and the coordinate information of significant data;
2) data designated in the protected location is carried out scrambled with a kind of encryption rule;
3) encrypted encoded data is carried out 24 one's complement summations, obtain the check code of document;
4) use data protection plot structure information, encrypted encoded data and check code to generate two-dimensional bar;
5) printout paper document;
6) the scanning paper document obtains image file;
7) the be protected enciphered message of plot structure information, check code and protected location data of two-dimensional bar information in the reading images file can obtain the raw data of information through deciphering;
8) use the protected location structural information, utilize the identification of OCR technology to obtain the significant data information in the paper document, identical scrambled rule is carried out scrambled with document printing the time;
9) utilize the data encryption coding obtain and the check code in the two-dimensional bar to carry out verification;
10) if verification is unsuccessful, the protected location primary data information (pdi) that uses deciphering to obtain carries out the manual secondary verification.
2. paper document tamper resistant method as claimed in claim 1 is characterized in that, the protected location data are carried out one's complement summation, to result's sign indicating number of negating, generates check code, and this check code generative process is following:
1) with the byte stream string of protected location data encryption coding, is divided into one group to per 24 an of high position, is designated as a word, 24 high-order benefits 0 of less than by low level;
2) all binary words are carried out additive operation, and the carry of most significant digit is to lowest order;
3) obtain with carry out the negate computing, obtain check code.
3. paper document tamper resistant method as claimed in claim 1; It is characterized in that described paper document tamper resistant method carries out scrambled to the data after the OCR identification and carries out one's complement with check code and sue for peace; Carry out data check, this data check process is following:
1) with the scrambled after the OCR identification (the scrambled rule is with generating check code) 2 system byte stream strings, be divided into one group by low level to per 24 an of high position, be designated as a word, 24 high positions of less than mend 0;
2) all binary words and check code carry out additive operation, and the carry of most significant digit is to lowest order;
3) obtain with carry out the negate computing, if the result be 0 the expression pass through, non-0 the expression do not pass through;
4) if verification is failed, the backup data information that then reads in the two-dimensional bar carries out the manual secondary verification.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210156783.3A CN102722737B (en) | 2012-05-13 | 2012-05-13 | A kind of paper document tamper resistant method |
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| CN201210156783.3A CN102722737B (en) | 2012-05-13 | 2012-05-13 | A kind of paper document tamper resistant method |
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| CN102722737B CN102722737B (en) | 2015-11-25 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102929848A (en) * | 2012-10-31 | 2013-02-13 | 上海合合信息科技发展有限公司 | Generation method and generation system of PDF (Portable Document Format) documents |
| CN103745252A (en) * | 2013-12-27 | 2014-04-23 | 广州市宝比塑料制品有限公司 | Coding line, two-dimensional coding method and two-dimensional decoding method |
| CN104298653A (en) * | 2013-07-18 | 2015-01-21 | 北大方正集团有限公司 | Method and device for identifying document attribute by changing page effect |
| CN105631348A (en) * | 2014-10-31 | 2016-06-01 | 江苏威盾网络科技有限公司 | Paper printed file secrecy method |
| CN106133679A (en) * | 2014-03-31 | 2016-11-16 | 惠普发展公司，有限责任合伙企业 | There is the acquisition of the linked version of the printing content of machine readable link |
| CN109903478A (en) * | 2019-03-15 | 2019-06-18 | 广东金赋科技股份有限公司 | Papery license self-help print method and system |
| WO2020077043A1 (en) * | 2018-10-10 | 2020-04-16 | Safenet Inc. | Method for securing a digital document |
| WO2020077048A1 (en) * | 2018-10-10 | 2020-04-16 | Safenet Inc. | Methods for securing and accessing a digital document |
| CN111178794A (en) * | 2019-12-18 | 2020-05-19 | 惠州市德赛西威汽车电子股份有限公司 | Method for checking bill of material information |
| CN112487490A (en) * | 2019-09-11 | 2021-03-12 | 株式会社理光 | Tamper recognition method, device, and medium |
| US10956590B2 (en) | 2018-10-22 | 2021-03-23 | Thales Dis Cpl Usa, Inc. | Methods for securely managing a paper document |
| US11625496B2 (en) | 2018-10-10 | 2023-04-11 | Thales Dis Cpl Usa, Inc. | Methods for securing and accessing a digital document |
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| US5912974A (en) * | 1994-04-05 | 1999-06-15 | International Business Machines Corporation | Apparatus and method for authentication of printed documents |
| CN101281581A (en) * | 2007-09-27 | 2008-10-08 | 北京数字证书认证中心有限公司 | Method for checking whether contents of paper file is distorted or not |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102929848A (en) * | 2012-10-31 | 2013-02-13 | 上海合合信息科技发展有限公司 | Generation method and generation system of PDF (Portable Document Format) documents |
| CN104298653A (en) * | 2013-07-18 | 2015-01-21 | 北大方正集团有限公司 | Method and device for identifying document attribute by changing page effect |
| CN104298653B (en) * | 2013-07-18 | 2017-11-24 | 北大方正集团有限公司 | The method and apparatus for identifying document properties by changing page effect |
| CN103745252B (en) * | 2013-12-27 | 2017-04-05 | 广州市宝比万像科技有限公司 | Coding row, two-dimentional code encoding method and Quick Response Code coding/decoding method |
| CN103745252A (en) * | 2013-12-27 | 2014-04-23 | 广州市宝比塑料制品有限公司 | Coding line, two-dimensional coding method and two-dimensional decoding method |
| CN106133679B (en) * | 2014-03-31 | 2019-10-22 | 惠普发展公司，有限责任合伙企业 | The method and apparatus for obtaining the linked version of printing content |
| CN106133679A (en) * | 2014-03-31 | 2016-11-16 | 惠普发展公司，有限责任合伙企业 | There is the acquisition of the linked version of the printing content of machine readable link |
| CN105631348A (en) * | 2014-10-31 | 2016-06-01 | 江苏威盾网络科技有限公司 | Paper printed file secrecy method |
| WO2020077043A1 (en) * | 2018-10-10 | 2020-04-16 | Safenet Inc. | Method for securing a digital document |
| WO2020077048A1 (en) * | 2018-10-10 | 2020-04-16 | Safenet Inc. | Methods for securing and accessing a digital document |
| WO2020077061A1 (en) * | 2018-10-10 | 2020-04-16 | Safenet Inc. | Methods for securely managing a paper document |
| US10970408B2 (en) | 2018-10-10 | 2021-04-06 | Thales Dis Cpl Usa, Inc. | Method for securing a digital document |
| US11625496B2 (en) | 2018-10-10 | 2023-04-11 | Thales Dis Cpl Usa, Inc. | Methods for securing and accessing a digital document |
| US10956590B2 (en) | 2018-10-22 | 2021-03-23 | Thales Dis Cpl Usa, Inc. | Methods for securely managing a paper document |
| CN109903478A (en) * | 2019-03-15 | 2019-06-18 | 广东金赋科技股份有限公司 | Papery license self-help print method and system |
| CN112487490A (en) * | 2019-09-11 | 2021-03-12 | 株式会社理光 | Tamper recognition method, device, and medium |
| CN111178794A (en) * | 2019-12-18 | 2020-05-19 | 惠州市德赛西威汽车电子股份有限公司 | Method for checking bill of material information |
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| CN102722737B (en) | 2015-11-25 |
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