CN112464181B - Method and system for preventing electronic signature printing paper document from counterfeiting - Google Patents

Abstract

The application discloses an anti-counterfeiting method for an electronic signature printing paper file, which comprises the steps of obtaining the characteristics of an electronic signature, and generating an optical hidden digital anti-counterfeiting code according to the characteristics of the electronic signature; arranging the optical hidden digital anti-counterfeiting code in an area where the electronic signature is located; acquiring an electronic signature printing paper file, and scanning an optical hidden digital anti-counterfeiting code in the electronic signature printing paper file; acquiring corresponding electronic signature electronic document information according to the optical hidden digital anti-counterfeiting code; and comparing the electronic signature electronic document information with the electronic signature in the electronic signature printing paper file, and alarming when the electronic signature information and the electronic signature printing paper file are inconsistent. The method can improve the identification speed and effect of the electronic signature document, and improve the accuracy and convenience of the printing anti-counterfeiting verification of the electronic signature. The application also discloses an electronic signature printing paper file anti-counterfeiting system.

Description

Method and system for preventing counterfeiting of electronic signature printed paper document

Technical Field

The invention belongs to the technical field of file anti-counterfeiting, and particularly relates to an anti-counterfeiting method and system for a paper file printed with an electronic signature.

Background

With the rapid development of information technology, the application of electronic signatures in OA office systems is more and more extensive, the electronic signatures are an expression form of electronic signatures, namely, the electronic signature operation is converted into a visual effect the same as the paper document stamping operation by using an image processing technology, meanwhile, the authenticity and integrity of electronic information and the undeniability of signers are guaranteed by using the electronic signature technology, and the electronic signatures can effectively prevent the files in the OA office systems from being tampered, so that the integrity and the safety of the electronic files are guaranteed. However, the electronic signature technology can only ensure the security of the electronic document (electronic data), when the electronic document is printed and output as a paper file, all electronic signature data with legal effectiveness disappear, and only one paper file with a red seal can be seen, and a picture in which the red seal is legally printed through a system or directly scanned cannot be distinguished. Based on the situation, an anti-counterfeiting mark and an anti-counterfeiting method of the electronic signature need to be designed to ensure the authenticity and the safety of the printed electronic signature.

At present, anti-counterfeiting means for printing paper documents with electronic signatures mainly comprise perforation seal anti-counterfeiting, optical digital watermark anti-counterfeiting and two-dimensional bar code anti-counterfeiting. The seal perforation is an important function required when a paper file is required to be output in public security business, and is divided into the following two types according to the characteristics of the public security business and the traditional seal using habit in China: the first type is that the two sides of the perforation seal are split, namely every two pages are added with one perforation seal, so that the left side and the right side of each page are provided with one half-edge seal except the first page and the last page; the second type is a multi-page perforation seal on one side, which is a perforation seal added in the traditional contract and is added on the right side only, and the seals on all pages are spliced to form a complete seal, and the perforation seal can be added at different positions of the page in different directions through parameters, and can also be added with different types of perforation seal forms through parameters to meet different requirements.

The optical digital watermark anti-counterfeiting is the leading-edge field of the current anti-counterfeiting technology, can be divided into qualitative anti-counterfeiting and quantitative anti-counterfeiting, can choose the appropriate anti-counterfeiting scheme according to different application requirements, wherein, the qualitative anti-counterfeiting is to utilize the digital watermark technology to add the invisible watermark information in the particular position of the output paper file, this kind of information is invisible to the human eye, can only see through the special light source, the watermark information can't be copied through taking a picture, scanner, can distinguish the true and false of the paper file through the special light source apparatus in this way; the quantitative anti-counterfeiting method is characterized in that an optical digital watermarking technology is utilized, key information of a document is encrypted and converted into discrete invisible watermarking information through a digital watermarking algorithm, the information cannot be seen by naked eyes after being printed, and only after a paper document is scanned through a scanner, hidden watermarking information is obtained through special digital watermarking extraction software, so that the authenticity of the paper document is identified.

The two-dimensional bar code anti-counterfeiting technology is a portable data storage technology mainly used in the field of logistics, a unique two-dimensional bar code anti-counterfeiting printing module is developed by combining an information encryption technology, a digital signature technology and a two-dimensional bar code technology, the requirement of using a two-dimensional bar code in electronic documents of national administrative authorities can be met by adopting the two-dimensional bar code anti-counterfeiting technology, the qualitative anti-counterfeiting digital watermark printing anti-counterfeiting technology can also be replaced under partial conditions, the two-dimensional bar code anti-counterfeiting technology has the advantage that the two-dimensional bar code can be extracted conveniently, the two-dimensional bar code information can be extracted directly through a handheld two-dimensional bar code scanning gun, and then key information can be obtained through decryption.

However, the above-described technique has the following problems: the anti-counterfeiting verification of the electronic signature printing document is complex, and especially when the number of the documents is large, the manual verification is troublesome and labor-consuming, and the effect is not good.

Disclosure of Invention

In order to solve the problems, the invention provides an anti-counterfeiting method and an anti-counterfeiting system for an electronic signature printed paper file, which can improve the identification speed and effect of an electronic signature document and improve the accuracy and convenience of printing anti-counterfeiting verification of an electronic signature.

The invention provides an anti-counterfeiting method for a paper document printed with an electronic signature, which comprises the following steps:

acquiring the characteristics of an electronic signature, and generating an optical hidden digital anti-counterfeiting code according to the characteristics of the electronic signature;

arranging the optical hidden digital anti-counterfeiting code in the area where the electronic signature is located;

acquiring an electronic signature printing paper file, and scanning an optical hidden digital anti-counterfeiting code in the electronic signature printing paper file;

acquiring corresponding electronic signature electronic document information according to the optical hidden digital anti-counterfeiting code;

and comparing the electronic signature electronic document information with the electronic signature in the electronic signature printing paper file, and alarming when the electronic signature information and the electronic signature printing paper file are inconsistent.

Preferably, in the method for preventing counterfeit of the paper document printed with the electronic signature, the method further includes:

generating an optical hidden information label positioned at the edge of the electronic signature;

arranging the optical hidden information label at the edge of the electronic signature;

scanning to obtain the optical hidden information label;

and alarming when the optical hidden information label is not positioned at the edge of the electronic signature.

Preferably, in the method for preventing counterfeit of the paper document printed with the electronic signature, the method further includes:

generating optical hidden marks of all pages of the electronic signature printing paper file;

arranging the optical hidden marks on all pages of the electronic signature printing paper document;

acquiring an optical hidden identifier in the corresponding electronic signature electronic document information according to the optical hidden digital anti-counterfeiting code;

and comparing whether the optical hidden mark in the electronic signature electronic document information is consistent with the optical hidden mark in the electronic signature printing paper file, and alarming when the optical hidden mark in the electronic signature printing paper file is inconsistent with the optical hidden mark in the electronic signature printing paper file.

Preferably, in the method for preventing counterfeit of the paper document printed with the electronic signature, the method further includes:

generating an optical hidden shape mark enclosing the character pressed by the electronic signature;

enclosing the characters pressed by the electronic signature by using the optical hidden shape mark;

scanning to obtain the optical hidden shape mark;

and alarming when the characters pressed by the electronic signature are not enclosed by the optical hidden shape mark.

Preferably, in the method for preventing the forgery of the paper document printed with the electronic signature, the optically hidden digital anti-counterfeiting code is a two-dimensional code, a bar code or a picture code.

The invention provides an anti-counterfeiting system for electronic signature printing paper documents, which comprises the following steps:

the optical hidden digital anti-counterfeiting code generating device is used for acquiring the characteristics of the electronic signature and generating an optical hidden digital anti-counterfeiting code according to the characteristics of the electronic signature;

the optical hidden digital anti-counterfeiting code setting device is used for setting the optical hidden digital anti-counterfeiting code in the area where the electronic signature is located;

the optical hidden digital anti-counterfeiting code acquisition device is used for acquiring the electronic signature printing paper file and scanning the optical hidden digital anti-counterfeiting code in the electronic signature printing paper file;

the electronic signature electronic document information acquisition device is used for acquiring corresponding electronic signature electronic document information according to the optical hidden digital anti-counterfeiting code;

and the first alarm device is used for comparing the electronic signature electronic document information with the electronic signature in the electronic signature printing paper file and giving an alarm when the electronic signature information and the electronic signature printing paper file are inconsistent.

Preferably, in the above system for preventing counterfeit of paper document printed with electronic signature, the system further comprises:

the optical hidden information label generating device is used for generating an optical hidden information label positioned at the edge of the electronic signature;

the optical hidden information label setting device is used for setting the optical hidden information label at the edge of the electronic signature;

the optical hidden information label acquisition device is used for scanning and acquiring the optical hidden information label;

and the second alarm device is used for giving an alarm when the optical hidden information label is not positioned at the edge of the electronic signature.

Preferably, in the above system for preventing forgery of an electronic signature printed paper document, further includes:

the optical hidden mark generating device is used for generating optical hidden marks of all pages of the electronic signature printing paper file;

the optical hidden mark setting device is used for setting the optical hidden marks on all pages of the electronic signature printing paper file;

the optical hidden identifier obtaining device is used for obtaining the optical hidden identifier in the corresponding electronic signature electronic document information according to the optical hidden digital anti-counterfeiting code;

and the third alarm device is used for comparing whether the optical hidden mark in the electronic signature electronic document information is consistent with the optical hidden mark in the electronic signature printing paper file or not, and alarming when the optical hidden mark in the electronic signature printing paper file is inconsistent with the optical hidden mark in the electronic signature printing paper file.

Preferably, in the above system for preventing forgery of an electronic signature printed paper document, further includes:

an optical hidden shape mark generating means for generating an optical hidden shape mark enclosing the character pressed by the electronic signature;

the optical hidden shape mark setting device is used for utilizing the optical hidden shape mark to enclose the characters pressed by the electronic signature;

optical hidden shape mark obtaining means for scanning to obtain the optical hidden shape mark;

and the fourth alarm device is used for giving an alarm when the optical hidden shape mark does not enclose the characters pressed by the electronic signature.

Preferably, in the above system for preventing forgery of an electronic signature printed paper document, the optically hidden digital anti-counterfeit code generating device is a two-dimensional code generating device, a barcode generating device, or a picture code generating device.

As can be seen from the above description, the method for preventing counterfeit of the electronic signature printed paper document provided by the invention comprises the following steps: firstly, acquiring the characteristics of an electronic signature, and generating an optical hidden digital anti-counterfeiting code according to the characteristics of the electronic signature; then, the optical hidden digital anti-counterfeiting code is arranged in the area where the electronic signature is located; then acquiring an electronic signature printing paper file, and scanning an optical hidden digital anti-counterfeiting code in the electronic signature printing paper file; then obtaining corresponding electronic signature electronic document information according to the optical hidden digital anti-counterfeiting code; finally, the electronic signature information of the electronic signature is compared with the electronic signature in the electronic signature printed paper file, when the electronic signature information and the electronic signature printed paper file are inconsistent, an alarm is given out, the scheme can be seen that the paper file is anti-counterfeit by utilizing the invisible optical hidden digital anti-counterfeit code printed on the paper file, when the authenticity is identified, the optical hidden digital anti-counterfeit code on the paper file is obtained by utilizing a specific scanning device, the corresponding electronic signature electronic file information can be obtained, the electronic signature electronic file information is compared with the paper file, the authenticity of the paper file can be identified quickly, and therefore the scheme can improve the identification speed and effect of the electronic signature file, and the accuracy and the convenience of the printing anti-counterfeit verification of the electronic signature are improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic diagram of an embodiment of an anti-counterfeit method for printing a paper document with an electronic signature according to the present invention;

FIG. 2 is a schematic illustration of an anti-counterfeiting design of an electronic signature printed paper document;

fig. 3 is a schematic diagram of an embodiment of an anti-counterfeiting system for printing paper documents with electronic signatures according to the present invention.

Detailed Description

The core of the invention is to provide a method and a system for anti-counterfeiting of an electronic signature printing paper file, which can improve the identification speed and effect of an electronic signature document and improve the accuracy and convenience of printing anti-counterfeiting verification of an electronic signature.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 1 shows an embodiment of an anti-counterfeiting method for an electronic signature printed paper document according to the present invention, and fig. 1 is a schematic diagram of an embodiment of an anti-counterfeiting method for an electronic signature printed paper document according to the present invention, the method including the following steps:

s1: acquiring the characteristics of the electronic signature, and generating an optical hidden digital anti-counterfeiting code according to the characteristics of the electronic signature;

it should be noted that the electronic signature is an expression form of the electronic signature, and the electronic signature operation is converted into the visual effect same as the paper document stamping operation by using the image processing technology, and the authenticity and integrity of the electronic information and the undeniability of the signer are ensured by using the electronic signature technology, and an optical digital watermark anti-counterfeiting technology can be used, wherein the core of the optical digital watermark anti-counterfeiting technology is to generate an anti-counterfeiting optical code watermark, namely, the optical information coding hiding technology, the computer image processing technology and the printing imaging technology are combined to generate a micro image code which is relevant to the practical application and has a variable shape.

S2: arranging the optical hidden digital anti-counterfeiting code in an area where the electronic signature is located;

it should be noted that the hidden two-dimensional code can be conveniently found in the area where the electronic signature is located, for example, when a two-dimensional code mode is adopted, the hidden two-dimensional code is placed in the electronic signature, referring to fig. 2, fig. 2 is a schematic diagram of an anti-counterfeiting design of a paper document printed by the electronic signature, here, the two-dimensional code at the position a is shown for the purpose of explaining the problem, and the two-dimensional code at the position a cannot be seen by human eyes actually. During identification, relevant information can be scanned only by aligning scanning equipment to the area of the electronic signature, but the specific setting position of each time can be random, namely, the specific position of the optically hidden digital anti-counterfeiting code is different when the same electronic signature is signed each time, and the optically hidden digital anti-counterfeiting code can also be used as an anti-counterfeiting mode.

S3: acquiring an electronic signature printing paper file, and scanning an optical hidden digital anti-counterfeiting code in the electronic signature printing paper file;

in this step, the scanning device is matched with the printing device, and the optical hidden digital anti-counterfeiting code can be scanned and identified only by the scanning device corresponding to the printing device.

S4: acquiring corresponding electronic signature electronic document information according to the optical hidden digital anti-counterfeiting code;

it should be noted that the electronic document information with the electronic signature obtained in this step may be displayed on the electronic device, and the electronic document includes the information of the page with the electronic signature.

S5: and comparing the electronic signature information in the electronic signature electronic document with the electronic signature in the electronic signature printing paper file, and alarming when the electronic signature information and the electronic signature printing paper file are inconsistent.

That is, it can be verified whether the features of the electronic signature in the two documents are identical, including but not limited to the features of the position, the text direction and the pressed text of the electronic signature.

According to the description, in the embodiment of the anti-counterfeiting method for the electronic signature printed paper file, the characteristics of the electronic signature are obtained firstly, and the optical hidden digital anti-counterfeiting code is generated according to the characteristics of the electronic signature; then, arranging the optical hidden digital anti-counterfeiting code in an area where the electronic signature is located; then acquiring an electronic signature printing paper file, and scanning an optical hidden digital anti-counterfeiting code in the electronic signature printing paper file; then obtaining corresponding electronic signature electronic document information according to the optical hidden digital anti-counterfeiting code; finally, comparing the electronic document information of the electronic signature with the electronic signature in the paper document printed by the electronic signature, and alarming when the two are inconsistent, so that the scheme can utilize invisible optical hidden digital anti-counterfeiting codes printed on the paper document to perform anti-counterfeiting on the paper document, and when identifying the authenticity, a specific scanning device is utilized to obtain the optical hidden digital anti-counterfeiting codes on the paper document, so that the corresponding electronic signature electronic document information can be obtained, and the electronic signature electronic document information is compared with the paper document, so that the authenticity of the paper document can be identified quickly, and therefore, the scheme can improve the identification speed and effect of the electronic signature document, and improve the accuracy and convenience of the printing anti-counterfeiting verification of the electronic signature.

In an embodiment of the method for preventing counterfeit of a paper document printed with an electronic signature, the method may further include the following steps in addition to the steps of the embodiment:

generating an optical hidden information label positioned at the edge of an electronic signature, wherein the label is used for determining the printing position of the electronic label as the name implies, and if someone replaces a printed file page and covers the signature again after the position of the electronic label is determined by using the label invisible to human eyes, the label is difficult to cover the position which is completely the same as the original electronic signature, so that better anti-counterfeiting can be realized;

the optical hidden information label is arranged at the edge of the electronic signature, with continuing reference to fig. 2, the five-pointed star at the position b in fig. 2 is the optical hidden information label, which is not seen by human eyes, and is shown only for clarifying the problem, and the specific shape of the optical hidden information label is not limited to the five-pointed star, but can be any other shape, and the five-pointed star in fig. 2 also has solid and hollow shapes, which can be arranged according to actual needs;

scanning to obtain optical hidden information labels, wherein the scanned labels indicate the positions of the electronic signatures;

the alarm is given when the optically hidden information label is not located at the edge of the electronic signature, i.e. in this case there may be a forgery, i.e. someone has replaced the printed paper document and has re-stamped the seal.

In addition, although the method of the above embodiment can prevent the forgery of the electronic signature, the method cannot effectively prevent the content of the electronic document from being tampered and replaced after printing, and based on this, on the basis of the embodiment of the method for preventing the forgery of the electronic signature printing paper document, the method may further include the following steps:

generating optical hidden marks on all pages of the electronic signature printed paper document, wherein the specific marks can be various marks at positions represented by d in fig. 2, the marks are random in appearance, and the setting positions of the marks are random, so that the marks can be better prevented from being counterfeited, because the marks set at each time are different from the marks set at other times, the step is to set at least the optical hidden marks on each page of the paper document, the shapes of the optical hidden marks are not limited, the optical hidden marks can be figures, symbols, characters or any other marks, and the setting positions are random, so that the anti-counterfeiting effect is enhanced;

the optical hidden marks are arranged on all pages of the electronic signature printed paper document, so that each page of the paper document is provided with the optical hidden mark, the specific types and positions of the optical hidden marks are random, and the optical hidden marks cannot be observed by human eyes, so that if anyone page is replaced by another page, the preset optical hidden marks do not exist any more, and the document counterfeiting condition is easily identified;

the optical hidden mark in the corresponding electronic signature electronic document information is obtained according to the optical hidden digital anti-counterfeiting code, namely, the electronic signature electronic document information can be obtained by scanning the optical hidden digital anti-counterfeiting code, and the appearance and the position of the optical hidden mark in each page can be shown;

whether the optical hidden identification in the contrast electronic signature electronic document information is consistent with the optical hidden identification in the electronic signature printing paper file, alarm when the two are inconsistent, namely, even if some pages in the printed file are replaced by others and the optical hidden identification is set, the optical hidden identification set by others is different from the appearance and the position of the optical hidden identification set in advance, so that the situation that the printed paper file is forged can be identified, alarm is carried out, and the anti-counterfeiting effect is better realized.

The application also provides a preferred embodiment of the anti-counterfeiting method for the electronic signature printing paper document, which comprises the following steps besides the steps in the embodiment:

generating an optically hidden shape mark enclosing the text to which the electronic signature is pressed, such optically hidden shape mark may be as in position c in fig. 2;

the characters pressed by the electronic signature are enclosed by the optical hiding shape marks, referring to fig. 2, the three characters of 'examining', 'person' and 'person' are enclosed by the electronic signature, the three characters are also enclosed by the optical hiding shape marks, the shapes of the optical hiding shape marks are random, like the characters of 'examining' enclosed by triangles, the characters of 'person' enclosed by circles and the characters of 'person' enclosed by rectangles in fig. 2;

scanning to obtain an optical hidden shape mark, namely displaying the appearance and the position of the optical hidden shape mark which is invisible to human eyes by a scanning device;

when the optical hidden shape mark does not enclose the characters pressed by the electronic signature, an alarm is given, namely, when the optical hidden shape mark does not enclose the characters pressed by the electronic signature as before, the position of the electronic signature is proved to be possibly changed, which indicates that the paper document is possibly forged and replaced by others, and then the alarm is given for subsequent processing, so that a better anti-counterfeiting effect is achieved.

It can be understood by those skilled in the art that, in each embodiment of the above method for preventing forgery of an electronic signature printed paper document, the optically hidden digital anti-counterfeit code may be selected from a two-dimensional code, a barcode or a picture code, that is, any one of the three anti-counterfeit codes can be used to achieve an effective anti-counterfeit effect, and may be selected according to actual requirements.

Fig. 3 shows an embodiment of an anti-counterfeit system for an electronic signature printed paper document, where fig. 3 is a schematic diagram of an embodiment of an anti-counterfeit system for an electronic signature printed paper document, provided by the present invention, and the system includes:

an optical hidden digital anti-counterfeiting code generating device 301, configured to obtain a feature of an electronic signature, and generate an optical hidden digital anti-counterfeiting code according to the feature of the electronic signature, where it is to be noted that the electronic signature is an expression form of an electronic signature, and an electronic signature operation is converted into a visual effect the same as a paper document stamping operation by using an image processing technology, and meanwhile, the electronic signature technology is used to ensure authenticity and integrity of electronic information and undeniability of a signer, and an optical digital watermark anti-counterfeiting technology may be used here, and a core thereof is to generate an anti-counterfeiting optical code watermark, that is, an optical information encoding hiding technology, a computer image processing technology and a printing imaging technology are combined to generate a micro image code which is related to actual application and has a variable appearance, and it is also noted that a pattern and a character printed by the optical digital watermark anti-counterfeiting technology cannot be recognized by human eyes, and the optical hidden digital anti-counterfeiting code can be generated by using the technology, and the optical hidden digital anti-counterfeiting code can be scanned by human eyes after being printed on a paper document, and the anti-counterfeiting code cannot be viewed by human eyes, and the anti-counterfeiting code can be scanned by a specific anti-counterfeiting scanning device, wherein the anti-counterfeiting code can be scanned by human eyes;

the optical hidden digital anti-counterfeitingcode setting device 302 is configured to set an optical hidden digital anti-counterfeiting code in an area where an electronic signature is located, and it should be noted that the optical hidden digital anti-counterfeiting code can be found conveniently in the area where the electronic signature is located, for example, when a two-dimensional code mode is adopted, the hidden two-dimensional code is placed in the electronic signature, the two-dimensional code at the position a is shown in fig. 2, and the two-dimensional code at the position a cannot be seen by human eyes in practice, and when identifying, related information can be scanned by only aligning a scanning device with the area of the electronic signature, but each specific setting position may be random, that is, each specific position of the optical hidden digital anti-counterfeiting code is different when the same electronic signature is signed, which can also be used as an anti-counterfeiting mode;

an optical hidden digital anti-counterfeitingcode acquisition device 303, configured to acquire an electronic signature printed paper document, scan an optical hidden digital anti-counterfeiting code therein, where an adopted scanning device is matched with a printing device, and the scanning device corresponding to the printing device can scan and identify the optical hidden digital anti-counterfeiting code;

an electronic signature electronic documentinformation obtaining device 304, configured to obtain corresponding electronic signature electronic document information according to the optically hidden digital anti-counterfeit code, where the obtained electronic signature electronic document information may be displayed on an electronic device, and the electronic document includes information of the page with the electronic signature;

thefirst warning device 305 is used for comparing the electronic signature in the electronic signature electronic document information and the electronic signature in the electronic signature printing paper file, and warning when the two are inconsistent, that is, it can be verified whether the characteristics of the electronic signature in the two files are completely the same, including but not limited to the characteristics of the position, the character direction and the pressed characters of the electronic signature.

In summary, the system can improve the identification speed and effect of the electronic signature document and improve the accuracy and convenience of the printing anti-counterfeiting verification of the electronic signature.

In an embodiment of the above system for preventing counterfeit of a paper document printed with an electronic signature, the method may further include:

the optical hidden information label generating device is used for generating an optical hidden information label positioned at the edge of an electronic signature, and the label is used for determining the printing position of the electronic label, and if a person replaces a printed file page and covers the signature again after the position of the electronic label is determined by using the label invisible to human eyes, the label is difficult to cover the position which is completely the same as the original electronic signature, so that better anti-counterfeiting effect can be realized;

the optical hidden information label setting device is used for setting the optical hidden information label on the edge of the electronic signature, with continued reference to fig. 2, the pentagon at the position b in fig. 2 is the optical hidden information label, which is certainly invisible to human eyes and is shown only for clarifying the problem, and the specific shape of the optical hidden information label is not limited to the pentagon and can be any other shape, and the pentagon in fig. 2 also has solid and hollow shapes, which can be set according to the actual needs;

the optical hidden information label acquisition device is used for scanning to obtain an optical hidden information label;

and a second alarm device for giving an alarm when the optically hidden information label is not located at the edge of the electronic signature, that is, in this case, there may be a forgery phenomenon in which someone replaces the printed paper document and re-stamps.

It should be noted that, although the above-mentioned embodiment can prevent the forgery of the electronic signature, it cannot effectively prevent the content of the electronic document from being tampered and replaced after printing, and based on this, on the basis of the above-mentioned embodiment of the system for preventing forgery of the electronic signature printing paper document, the system may further include:

the optical hidden mark generating device is used for generating optical hidden marks on all pages of the electronic signature printed paper file, the specific marks can be various marks at positions represented by d in fig. 2, the marks are random, and the setting positions of the marks are also random, so that the marks can be better prevented from being forged, because the marks set at each time are different from the marks set at other times, namely, the optical hidden marks are at least arranged on each page of the paper file, the shapes of the optical hidden marks are not limited, the optical hidden marks can be figures, symbols, characters or other random marks, and the setting positions are also random, so that the anti-counterfeiting effect is enhanced;

the optical hidden mark setting device is used for setting the optical hidden marks on all pages of the electronic signature printed paper document, so that each page of the paper document is provided with the optical hidden mark, the specific types and positions of the optical hidden marks are random, and the optical hidden marks cannot be observed by human eyes, so that if anyone of the pages is replaced by others, the preset optical hidden marks do not exist any more, and the counterfeit condition of the document can be easily identified;

optical hidden mark obtaining device, which is used to obtain the optical hidden mark in the electronic signature electronic document information according to the optical hidden digital anti-counterfeiting code, that is, the electronic signature electronic document information can be obtained by scanning the optical hidden digital anti-counterfeiting code, and the appearance and position of the optical hidden mark in each page can be displayed;

the third alarm device is used for comparing whether the optical hidden mark in the electronic signature electronic document information is consistent with the optical hidden mark in the electronic signature printing paper file or not, and alarming when the optical hidden mark and the optical hidden mark are inconsistent, namely, even if someone replaces some pages in the printing file and sets the optical hidden mark, the optical hidden mark set by the someone is different from the preset optical hidden mark in appearance and position, so that the counterfeit condition of the printing paper file can be identified and alarming is carried out, and the anti-counterfeiting effect is better realized.

The application also provides a preferred embodiment of the system for preventing the counterfeiting of the electronic signature printing paper document, which comprises the following devices besides the devices in the embodiment:

optical hidden shape mark generating means for generating an optical hidden shape mark enclosing a character to which the electronic signature is pressed, such optical hidden shape mark may be as in the position c in fig. 2;

an optical hidden shape mark setting device, configured to enclose characters pressed by an electronic signature with an optical hidden shape mark, referring to fig. 2, when the electronic signature presses three characters of "examine", "member" and "person", the three characters are enclosed with the optical hidden shape mark, and the shape of the optical hidden shape mark is also random, that is, the character of "examine" is enclosed with a triangle, the character of "member" is enclosed with a circle, and the character of "person" is enclosed with a rectangle in fig. 2;

optical hidden shape mark obtaining means for scanning to obtain an optical hidden shape mark, that is, the appearance and position of the optical hidden shape mark invisible to the human eye can be displayed by the scanning means;

and the fourth alarm device is used for giving an alarm when the optical hidden shape mark does not enclose the characters pressed by the electronic signature, namely, when the optical hidden shape mark cannot enclose the characters pressed by the electronic signature as before, the position of the electronic signature is proved to be possibly changed, which indicates that the paper document is possibly forged and replaced by others, and then the alarm is required to perform subsequent processing to achieve a better anti-counterfeiting effect.

In each embodiment of the above system for preventing forgery of the electronic signature printed paper document, the optical hidden digital anti-counterfeit code generating device may be a two-dimensional code generating device, a bar code generating device or a picture code generating device. That is to say, any one of the three anti-counterfeiting code generation devices can realize effective anti-counterfeiting effect, and can be selected according to actual requirements.

The above method and system are described in detail below with a specific example:

anti-counterfeiting design for printing electronic signature paper document

The anti-counterfeiting design of printing of the electronic signature paper file mainly utilizes an optical digital watermark technology, and the optical digital anti-counterfeiting watermark is hidden in a signature and a document when the electronic signature paper file is printed by a laser printer, so that the electronic signature paper file can not be identified by human eyes and can be prevented from being artificially copied and imitated, and the anti-counterfeiting mark mainly comprises the following points:

(1) When an electronic file of the electronic signature is used for printing, a hidden optical digital watermark two-dimensional code is generated and hidden in the signature, and the position of the two-dimensional code is random;

(2) When an electronic document of the electronic signature is used for printing, the information around the electronic signature is specially processed, as shown in b and c in figure 2, the positioning mark of b in figure 1 is carried out on the position of the signature, and meanwhile, the optical anti-counterfeiting information carried out on characters around the electronic signature is subjected to image recognition, so that the authenticity of the electronic signature is identified;

(3) When an electronic document with an electronic signature is used for printing, optical digital watermark information (random optical anti-counterfeiting information) with different numbers and positions can be randomly generated on each page of the electronic document and hidden in each page of the electronic document, so that the printed content of the electronic document is prevented from being tampered;

(II) authentication process of electronic signature paper document

(1) Scanning the printed paper electronic seal by using scanning equipment, and identifying two-dimensional code information hidden in the electronic seal;

(2) Through the scanned two-dimensional code information, the software system can inquire the information of the electronic signature and the corresponding electronic file information;

(3) The method comprises the steps that through picture information of an electronic signature read by scanning equipment, a software system identifies the picture information, anti-counterfeiting verification is carried out on the scanned electronic signature through position identification information (b in figure 1) of the electronic signature and optical identification information (c in figure 1) of the position around the signature, if the electronic signature is forged, electronic forgery is prompted, and meanwhile, a useless identification is printed on a paper document; otherwise, continuously verifying whether the contents of the electronic files are complete and consistent;

(4) Scanning and identifying paper files of electronic files through scanning equipment to obtain picture files of the paper files, identifying the printed contents through random hidden optical digital watermarks of the paper files by using an image identification technology, and giving a verification passing prompt after the verification passes; if the verification is not passed, giving a prompt that the verification is not passed and printing a waste mark in the paper document.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (4)

1. An anti-counterfeiting method for a paper document printed with an electronic signature is characterized by comprising the following steps:

acquiring the characteristics of an electronic signature, and generating an optical hidden digital anti-counterfeiting code according to the characteristics of the electronic signature;

arranging the optical hidden digital anti-counterfeiting code in an area where the electronic signature is located;

acquiring an electronic signature printing paper file, and scanning an optical hidden digital anti-counterfeiting code in the electronic signature printing paper file;

acquiring corresponding electronic signature electronic document information according to the optical hidden digital anti-counterfeiting code;

comparing the electronic signature electronic document information with the electronic signature in the electronic signature printing paper file, and alarming when the electronic signature information is inconsistent with the electronic signature in the electronic signature printing paper file;

further comprising:

generating an optical hidden information label positioned at the edge of the electronic signature;

arranging the optical hidden information label at the edge of the electronic signature;

scanning to obtain the optical hidden information label;

alarming when the optical hidden information label is not positioned at the edge of the electronic signature;

further comprising:

generating optical hidden marks of all pages of the electronic signature printing paper file;

setting the optical hidden mark on all pages of the electronic signature printing paper file;

acquiring an optical hidden identifier in the corresponding electronic signature electronic document information according to the optical hidden digital anti-counterfeiting code;

comparing whether the optical hidden mark in the electronic signature electronic document information is consistent with the optical hidden mark in the electronic signature printing paper file, and alarming when the two are inconsistent;

further comprising:

generating an optical hidden shape mark enclosing characters pressed by the electronic signature;

enclosing the characters pressed by the electronic signature by using the optical hidden shape mark;

scanning to obtain the optical hidden shape mark;

and alarming when the optical hidden shape mark does not enclose the characters pressed by the electronic signature.

2. The method for preventing the counterfeiting of the paper document printed with the electronic signature as claimed in claim 1, wherein the optically hidden digital anti-counterfeiting code is a two-dimensional code, a bar code or a picture code.

3. An electronic signature printing paper document anti-counterfeiting system is characterized by comprising:

the optical hidden digital anti-counterfeiting code generating device is used for acquiring the characteristics of the electronic signature and generating an optical hidden digital anti-counterfeiting code according to the characteristics of the electronic signature;

the optical hidden digital anti-counterfeiting code setting device is used for setting the optical hidden digital anti-counterfeiting code in the area where the electronic signature is located;

the optical hidden digital anti-counterfeiting code acquisition device is used for acquiring the electronic signature printed paper file and scanning the optical hidden digital anti-counterfeiting code in the electronic signature printed paper file;

the electronic signature electronic document information acquisition device is used for acquiring corresponding electronic signature electronic document information according to the optical hidden digital anti-counterfeiting code;

the first alarm device is used for comparing the electronic signature electronic document information with the electronic signature in the electronic signature printing paper file and giving an alarm when the electronic signature information and the electronic signature printing paper file are inconsistent;

further comprising:

the optical hidden information label generating device is used for generating an optical hidden information label positioned at the edge of the electronic signature;

the optical hidden information label setting device is used for setting the optical hidden information label at the edge of the electronic signature;

the optical hidden information label acquisition device is used for scanning and acquiring the optical hidden information label;

the second alarm device is used for alarming when the optical hidden information label is not positioned at the edge of the electronic signature;

further comprising:

the optical hidden mark generating device is used for generating optical hidden marks of all pages of the electronic signature printing paper file;

the optical hidden mark setting device is used for setting the optical hidden marks on all pages of the electronic signature printing paper file;

the optical hidden identifier obtaining device is used for obtaining the optical hidden identifier in the corresponding electronic signature electronic document information according to the optical hidden digital anti-counterfeiting code;

the third alarm device is used for comparing whether the optical hidden mark in the electronic signature electronic document information is consistent with the optical hidden mark in the electronic signature printing paper file or not, and alarming when the optical hidden mark in the electronic signature printing paper file is inconsistent with the optical hidden mark in the electronic signature printing paper file;

further comprising:

an optical hidden shape mark generating device for generating an optical hidden shape mark enclosing the character pressed by the electronic signature;

the optical hidden shape mark setting device is used for utilizing the optical hidden shape mark to enclose the characters pressed by the electronic signature;

optical hidden shape mark obtaining means for scanning to obtain the optical hidden shape mark;

and the fourth alarm device is used for giving an alarm when the optical hidden shape mark does not enclose the characters pressed by the electronic signature.

4. The system for preventing the forgery of the paper documents printed with electronic signatures according to claim 3, wherein the optically hidden digital anti-counterfeit code generating device is a two-dimensional code generating device, a bar code generating device or a picture code generating device.

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