JP5908145B1 - Digital self-written system, digital self-written verification apparatus, method and program - Google Patents

Abstract

[PROBLEMS] To easily complete a procedure that requires a user's signature on a document and to verify that a user has signed and confirmed the document. A document generation server generates an original document PDF file in which input information is formed with a predetermined layout template, displays the original document PDF file, and accepts an input of the own document and an original document PDF A web page including the file location information is generated and transmitted to the information terminal device 200. The information terminal device 200 displays a web page, accepts input of the self-written document, calculates a hash value from the source document PDF file, generates self-written information based on the self-written document, and generates self-written information including the hash value as a document. Send to server 100. The document generation server 100 generates a self-written PDF file in which self-written information including a hash value is added to the original document PDF file, and assigns an electronic signature and a time stamp to the generated self-written PDF file. [Selection] Figure 2

Description

  The present invention relates to a digital self-writing system, a digital self-writing verification apparatus, a method, and a program.

  In recent years, it has been possible to download documents related to procedures for opening accounts at banks and securities companies, various applications, and various applications of public offices from a web page, and the efficiency of procedures has been improved. In such a web system, it is often necessary to write the signature of the person himself / herself in writing in order to secure the intention of the person in the end. It was common to mail after signing. For this reason, the procedure cannot be completed on the web, the procedure is complicated for the user, and the procedure itself may be given up on the way. Moreover, since the procedure cannot be completed for the service provider, there is a problem that the opportunity to provide the service to the user is missed.

  In order to solve such a situation, a technique for converting only the visible data portion of the structured document into image data and adding an electronic signature to the image data has been disclosed (see Patent Document 1). In this technique, since the digital signature is added after the user confirms the image data of the visible data portion of the structured document, the contents confirmed by the user can be clarified.

JP 2003-242139 A

  However, such a technique assumes that an electronic signature is added to a pre-created document such as a contract, and it seems that the person who finally confirmed the electronic document is self-written. It was difficult to confirm visually. Even if signature image data is overlaid on an electronic document and printed, it is possible to use the signature image data for other documents. It was not possible to verify afterwards whether the document was confirmed and signed.

  The present invention has been made in view of the above, and can easily complete a procedure that requires a user's signature on a document and confirms that the user has signed and confirmed the document. An object of the present invention is to provide a digital self-written system, a digital self-written verification apparatus, a method, and a program that can be verified after the fact.

  In order to solve the above-described problem, in the present invention, the document generation server generates an original document PDF file in which input information received by the information terminal device is formed with a predetermined layout template, and the generated original document PDF file Is generated, and a web page including a self-written area that accepts an input of the user's own handwritten handwriting and location information indicating a location where the original document PDF file is stored is generated, and the generated web page Is transmitted to the information terminal device, the information terminal device displays the web page transmitted from the document generation server, accepts the input of the handwriting in the handwriting area, and stores the original document PDF file stored at the location indicated by the location information The hash value is calculated from the generated self-written information based on the received self-written information, and the self-written information including the hash value is transmitted to the document generation server. Server, and generating a dictionary PDF files append the dictionary information including the hash value based on document PDF file.

  In another aspect of the present invention, the original document PDF file in which the input information is formed with a predetermined layout template is self-written information generated from the user's own handwritten handwriting and includes the hash value of the original document PDF file. It is characterized in that it is determined whether or not the hash value included in the self-written information of the self-written PDF file to which the self-written information including the self-written information matches the hash value calculated from the original document PDF file.

  According to the present invention configured as described above, it is possible to easily complete a procedure that requires the user's signature on a document, and to verify that the user has signed and confirmed the document. There is an effect that can be done.

1 is an explanatory diagram of a digital self-writing system 10 according to Embodiment 1. FIG. 1 is a block diagram illustrating a configuration of a digital self-writing system 10 according to a first embodiment. 5 is an explanatory diagram illustrating an example of a data configuration of a layout template storage unit 120. FIG. It is explanatory drawing which shows the example of a data structure of an original document PDF file, a self-document PDF file, a signature PDF file, and the display of a signature PDF file. It is a flowchart which shows the digital self-writing process procedure which the document production | generation server 100 and the information terminal device 200 perform. It is a flowchart which shows the digital self-writing process procedure which the document production | generation server 100 and the information terminal device 200 perform. It is a flowchart which shows the document verification process procedure which the information terminal device 200 performs. It is a block diagram which shows the structure of the digital self-writing system 20 concerning Example 2. FIG. It is explanatory drawing which shows an example of a data structure of the biometric information storage part. It is a flowchart which shows the digital self-write processing procedure (biometric authentication part) which the document production | generation server 300 and the information terminal device 400 perform.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. In addition, the following description is an example of embodiment and this invention is not limited to these Examples.

  First, the outline | summary of the digital self-writing system 10 concerning Example 1 is demonstrated. FIG. 1 is an explanatory diagram of a digital self-writing system 10 according to the first embodiment. The user P is an operator of the information terminal device 200 that executes an account opening of a bank or a securities company, various applications, various applications of public offices, etc. from the web. In response to a request from the information terminal device 200, the document generation server 100 transmits a web page describing matters relating to a contract or application and an input form (1). The information terminal device 200 displays a web page, receives input information input by the user P, and transmits the received input information to the document generation server 100 (2).

  The document generation server 100 generates a PDF (Portable Document Format) file (hereinafter referred to as an original document PDF file) according to a predetermined layout template based on the input information (3). The document generation server 100 generates a web page that displays the generated original document PDF file, and transmits the generated web page to the information terminal device 200 (4).

  The information terminal device 200 displays a web page and accepts an input of its own writing (5). The information terminal device 200 receives the original document PDF file from the document generation server 200 (6). The information terminal device 200 obtains a hash value from the original document PDF file, and transmits the self-written information generated from the user P's own document and the hash value of the original document PDF file to the document generation server 100 (7).

  The document generation server 100 appends self-written information including the hash value of the original document PDF file to the original document PDF file (8). As described above, after confirming the original document PDF file displayed on the screen, the user P writes his / her own text on the confirmed content, thereby the hash value of the original document PDF file confirmed by the user P. Is added to the original document PDF file, so that the contents of the original document PDF file and the handwriting of the user can be displayed or printed together and the hash value is verified. It is possible to verify that the subsequent user P has confirmed and signed the original document PDF file.

  FIG. 2 is a block diagram of the configuration of the digital self-writing system 10 according to the first embodiment. As shown in FIG. 2, the digital self-writing system 10 includes a document generation server 100 and an information terminal device 200, and the document generation server 100 and the information terminal device 200 are connected via a network 1 so that they can communicate with each other. The network 1 is an arbitrary type of communication network, such as the Internet, an intranet, a LAN (Local Area Network), a VPN (Virtual Private Network), and a mobile communication network, whether wired or wireless.

  The document generation server 100 generates an original document PDF file obtained by shaping the input information received by the information terminal device 200 with a predetermined layout template, and converts the self-written information including the hash value of the original document PDF file into the original document PDF file. Generate a self-written PDF file with additional writing. Further, a signature PDF file in which an electronic signature and a time stamp are added to the self-written PDF file is generated. The document generation server 100 is an apparatus that determines whether or not the self-written information included in the signature PDF file has been applied to the original document PDF file, and is an example of a digital self-written verification apparatus.

  The information terminal device 200 is a personal computer, a tablet computer, a smartphone, a game machine, or the like operated by a user, and includes a web browser. The information terminal device 200 accepts input information and transmits it to the document generation server 100.

  Next, the function and configuration of the document generation server 100 will be described. The document generation server 100 includes a web page storage unit 110, a layout template storage unit 120, an original document PDF storage unit 130, a signature PDF storage unit 140, a transmission / reception unit 101, an original document PDF generation unit 102, a confirmation page generation unit 103, a character recognition Unit 104, self-written PDF generation unit 105, signature PDF generation unit 106, operation display unit 107, and document verification unit 108.

  The web page storage unit 110 stores a web page that is displayed on the information terminal device 200 in response to a user request and receives input information. The web page storage unit 110 is not necessarily provided in the document generation server 100 but may be provided in another web server.

  FIG. 3 is an explanatory diagram illustrating an example of a data configuration of the layout template storage unit 120. The layout template storage unit 120 is a document layout required for generating an original document PDF file from input information received on a web page, specifically, a title or ruled line position, an input information arrangement position, a character A layout template with a size and the like is stored. The layout template storage unit 120 stores page identification information and a layout template in association with each other.

  The original document PDF storage unit 130 stores an original document PDF file generated by generating input information according to a layout template.

  The signature PDF storage unit 140 stores a signature PDF file to which an electronic signature and a time stamp are further added to a self-written PDF file in which self-written information including the hash value of the original document PDF file is added to the original document PDF file.

  Here, the self-written handwriting is a user's handwriting accepted by the user operating a pen-type input device or fingertip on a tablet or touch panel. Generally, the user's own name is a signature or the user's own name. A mark or the like is used. Self-written information refers to various types of information generated by receiving a user's own written information. Specifically, the self-written information includes stroke data indicating the writing order, writing pressure, moving speed, etc. of the self-written text, image data of the self-written data, date / time information indicating the date / time when the self-written is received, and the information terminal that receives the self-written Position information indicating the position of the apparatus 200, text data obtained by character-converting stroke data of the handwritten text, and any other information that can be obtained from the self-written text may be used.

  The transmission / reception unit 101 transmits / receives various data to / from the information terminal device 200 operated by the user. Specifically, the transmission / reception unit 101 transmits a web page stored in the web page storage unit 110 to the information terminal device 200 in response to a request from the information terminal device 200, and receives input information transmitted from the information terminal device 200. . The transmission / reception unit 101 transmits a web page for confirming the original document PDF file generated from the input information in response to a request from the information terminal device 200 to the information processing device 200 and receives the self-written information. The transmission / reception unit 101 transmits the signature PDF file to the information terminal device 200.

  The original document PDF generation unit 102 generates and generates an original document PDF file formed in a predetermined layout using the input information transmitted from the information terminal device 200 and the layout template stored in the layout template storage unit 120. The original document PDF file is stored in the original document PDF storage unit 130.

  The confirmation page generation unit 103 displays the original document PDF file generated by the original document PDF generation unit 102 and generates a web page including a self-written area that accepts input of the self-written. The location information indicating the location of the original document PDF file stored in the document PDF storage unit 130, that is, the URL is embedded. The self-written area included in the web page may be set so as to overlap the area for displaying the original document PDF file, or may be set to an area different from the area for displaying the original document PDF file.

  The character recognizing unit 104 recognizes a character from the stroke data of the handwriting and converts the recognized character into text data.

  The self-written PDF generation unit 105 generates a self-written PDF file in which self-written information including the hash value of the original document PDF file is added to the original document PDF file.

  The signature PDF generation unit 106 generates a signature PDF file with an electronic signature and a time stamp added to the entire self-written PDF file, and stores the generated signature PDF file in the signature PDF storage unit 140.

  FIG. 4 is an explanatory diagram showing the data structure of the original document PDF file, the self-written PDF file, and the signature PDF file, and a display example of the signature PDF file. As shown in FIG. 4, a PDF file in which self-written information including the hash value of the original document PDF file is added to the original document PDF file (original document) is the self-written PDF file. A PDF file with a time stamp is a signature PDF file.

  Here, the range 41 of the original document PDF file (original document) is a range in which a hash value to be added to the original document PDF file included in the self-written information is calculated. A range in which self-written information including the hash value of the original document PDF file is added to the original document PDF file (original document), that is, a range 42 of the self-written PDF file is a range in which a hash value used in the electronic signature is calculated.

  Furthermore, an example of a print image of a signature PDF file will be described. The print image 43 is an example of a print image when a signature PDF file is printed. The input information is arranged according to the layout template (44). In addition to text data, the input information can include image data such as a photograph and other data, and the image data such as a photograph is arranged at a position defined by the layout template in the same manner as the text data (45). . The image data of the self-written information in the self-written information is arranged at the position where the input in the document is accepted or the position determined by the layout template (46), and the text data obtained by converting the stroke data of the self-written text into characters. Are arranged at the positions determined by the layout template (47).

  The operation display unit 107 includes an input device such as a keyboard and a mouse and a display device such as a display. The operation display unit 107 receives a verification instruction for the signature PDF file to be verified, and displays the verification result.

  The document verification unit 108 verifies the signature PDF file stored in the signature PDF storage unit 140 or the signature PDF file transmitted from another device. Specifically, the document verification unit 108 verifies the time stamp and the electronic signature, and further checks whether the hash value included in the self-written information matches the hash value of the original document PDF file (original document). Judging. As a result, it is possible to verify whether or not the self-written document is the original document PDF file.

  The function and configuration of the information terminal device 200 provided in the digital self-writing system 10 will be described. The information terminal device 200 includes a signature PDF storage unit 210, a transmission / reception unit 201, an operation display unit 202, a hash value calculation unit 203, a self-written information generation unit 204, and a document verification unit 205.

  The signature PDF storage unit 210 stores the signature PDF file transmitted from the document generation server 100.

  The transmission / reception unit 201 transmits / receives various data to / from the document generation server 100. Specifically, the transmission / reception unit 201 receives the web page transmitted from the document generation server 100 and transmits the self-written information including the input information received by the operation display unit 202 or the hash value of the original document PDF file. . The transmission / reception unit 201 receives the signature PDF file transmitted from the document generation server 100.

  The operation display unit 202 displays the web page transmitted from the document generation server 100 in response to a user request, and accepts input information input to the displayed web page. The operation display unit 202 displays the confirmation page transmitted from the document generation server 100, and accepts the input of the own document in the own document area included in the displayed confirmation page. The input operation of the handwriting is detected by a pointing device such as a touch panel, a pen tablet, a liquid crystal pen tablet, or a mouse provided in the operation display unit 202.

  The hash value calculation unit 203 refers to the URL of the original document PDF file embedded in the confirmation page transmitted from the document generation server 100, and downloads the original document PDF file. The hash value calculation unit 203 calculates a hash value of the downloaded original document PDF file. As a method for calculating the hash value of the original document PDF file, a technique optimized according to the characteristics of the original document PDF file may be used in addition to a known hash function. Further, the hash value of the original document PDF file may be obtained by transmitting a request for calculating the hash value of the original document PDF file to the document generation server 100 and using the hash value calculated and transmitted by the document generation server 100 in response to the request. Good. Alternatively, the hash value calculated in advance by the document generation server 100 may be embedded in the confirmation page, and the hash value embedded in the confirmation page may be used.

  The self writing information generation unit 204 generates self writing information from the input of the self writing. Specifically, the self-written information generation unit 204 acquires stroke data including the coordinates in the self-written area and the pressure at each of the coordinates based on the input position and order of the self-written and the pressure on the touch panel. In addition, the movement speed of a pen or a finger may be added as stroke data. The self-written information generation unit 204 generates image data from the stroke data. The self-written information generation unit 204 acquires date / time information that measures the date / time when the input of the self-written is timed, and position information obtained by positioning the point where the input of the self-written is received.

  Since the document verification unit 205 executes the same functions and processing as the document verification unit 108 of the document generation server 100, description thereof is omitted here and the description of the document verification unit 108 is referred to. The information terminal device 200 is an example of a digital self-document verification device.

  A digital self-writing process executed by the digital self-writing system 10 configured as described above will be described. FIG. 5 and FIG. 6 are flowcharts showing digital self-writing processing procedures executed by the document generation server 100 and the information terminal device 200.

  The operation display unit 202 of the information terminal device 200 receives the input information input in the input field of the web page (step S501). The web page is, for example, a page for inputting necessary items regarding an application or an application that requires the signature of the person, and is received from the document generation server 100 or another web server. The web page displayed on the operation display unit 202 includes page identification information for identifying the web page. The transmission / reception unit 201 transmits the received input information and page identification information to the document generation server 100 (step S502).

  The transmission / reception unit 101 of the document generation server 100 receives the input information and the page identification information transmitted from the information terminal device 200 (step S503). The original document PDF generation unit 102 acquires a layout template associated with the page identification information from the layout template storage unit 120 (step S504).

  The original document PDF generation unit 102 generates an original document PDF file formed into a predetermined layout using the input information and the layout template (step S505). Thereby, the print image of the original document in which the input information is arranged in a predetermined layout is determined. For example, the print image excluding the portions (46, 47) related to the self-writing of the print image 43 shown in FIG. The original document PDF generation unit 102 further encrypts the generated original document PDF file.

  The original document PDF generation unit 102 stores the generated original document PDF file in the original document PDF storage unit 130 (step S506). The confirmation page generation unit 103 generates a confirmation page (step S507). The confirmation page is a web page that includes a self-written area that displays the original document PDF file as a confirmed print image without downloading and accepts the input of the self-written text. The confirmation page further includes location information indicating the location of the original document PDF file stored in the original document PDF storage unit 130, that is, a URL. Instead of the URL, the hash value of the original document PDF file may be included as described above. The transmission / reception unit 101 transmits a confirmation page to the information terminal device 200 (step S508).

  The transmission / reception unit 201 of the information terminal device 200 receives the confirmation page (step S509). The operation display unit 202 displays a confirmation page (step S510). As a result, the user can confirm on the screen the original document PDF file whose print image is fixed and cannot be altered. The operation display unit 202 accepts an input of the own writing in the own writing area (step S511). The self-written information generating unit 204 acquires the stroke data of the self-written from the input of the self-written (Step S512). Further, the self-written information generation unit 204 generates self-written image data from the stroke data of the self-written. Moreover, the date information which timed the date which received the input of the self-written by the timer part which is not illustrated, and the positional information which measured the point which received the input of the self-written by the GPS positioning part which is not illustrated are acquired. In addition to or in place of the date and time information, a time stamp described later may be added.

  The hash value calculation unit 203 refers to the URL of the original document PDF file included in the confirmation page, and downloads the original document PDF file from the document generation server 100 (step S513). The hash value calculation unit 203 calculates the hash value of the original document PDF file (step S514). Specifically, the hash value calculation unit 203 decrypts the encrypted original document PDF file and then decrypts the original document PDF file. A hash value of the document PDF file is calculated. The hash value calculation unit 203 includes the hash value in the handwritten information (step S515). Thus, the original document PDF file whose contents are confirmed by the user is associated with the self-written information, and the document generation server 100 is prevented from using the self-written information (particularly image data or stroke data) for other documents. be able to. It is also possible to verify that the user has written the original document PDF file.

  As a method of including the hash value in the handwritten information, the hash value is embedded in any of the handwritten information, that is, the hash value is described in any of the handwritten information. In addition, various methods for associating the self-written information with the hash value such as holding a hash value as one of the self-written information can be adopted. The transmission / reception unit 201 transmits the stroke data of the handwriting to the document generation server 100 (step S516).

  The transmission / reception unit 101 of the document generation server 100 receives the stroke data of the handwriting (step S517). The character recognition unit 104 recognizes a character from the received stroke data of the handwritten (step S518). The character recognition unit 104 converts the recognized character into text data (step S519). The transmission / reception unit 101 transmits text data to the information terminal device 200 (step S520).

  The transmission / reception unit 201 of the information terminal device 200 receives text data (step S521). The operation display unit 202 displays the text data as a result of character conversion of the handwritten (step S522). The operation display unit 202 receives a confirmation input indicating that the character intended by the user is displayed (step S523). If an input for canceling is accepted, the process proceeds to step S511, and the input of the handwriting is accepted again. When receiving the confirmation input, the transmission / reception unit 201 transmits the self-written information to the document generation server 100 (step S524).

  The transmission / reception unit 101 of the document generation server 100 receives the self-written information (step S525). The signature PDF generation unit 105 adds the handwritten information to the original document PDF file (step S526). Specifically, the signature PDF generation unit 105 decrypts the encrypted original document PDF file, and appends self-written information including the hash value of the original document PDF file to the decrypted original document PDF file. The signature PDF generation unit 105 adds an electronic signature and a time stamp to the original document PDF file to which the self-written information is added, that is, the self-written PDF document file (step S527). Specifically, after an electronic signature is attached to the self-written PDF file, a time stamp is requested from the time certificate authority, and the issued time stamp is attached. The signature PDF generation unit 105 stores the signature PDF file with the electronic signature and the time stamp in the signature PDF storage unit 140 (Step S528). The transmission / reception unit 101 transmits the signature PDF file to the information terminal device 200 (step S529).

  The transmission / reception unit 201 of the information terminal device 200 receives the signature PDF file (step S530). The transmission / reception unit 201 stores the signature PDF file in the signature PDF storage unit 210 (step S531).

  In this way, an original document PDF file (original document) in which the input information received on the web page is formed with a predetermined layout template is generated, and the input of the own document is received to the generated original document PDF file. By appending to the original document PDF file, the original document and the self-written document can be displayed and printed as one document, so that it is possible to visually confirm that the user has approved the contents of the document.

  In addition, you can check the print image of the original document PDF file on the screen and enter your own document, so you can sign the document printed on paper and mail it without having to go through complicated procedures such as mailing. Application procedures and application procedures can be completed. In addition, since the self-written information generated based on the self-written information is included in the hash value of the original document PDF file whose contents have been confirmed by the user, the self-written information (particularly the image data of the self-written information) is included in other documents. It is possible to detect fraud such as being used or tampering with the original document PDF file confirmed by the user.

  In addition, since an electronic signature and a time stamp are assigned to the self-written PDF file, it is possible to detect alteration of the original document PDF file and the self-written information, thereby ensuring the reliability of the document with the self-written document. can do.

  Next, document verification processing executed by the digital self-writing system 10 will be described. FIG. 7 is a flowchart showing a document verification processing procedure executed by the information terminal device 200.

  The operation display unit 202 receives a verification instruction for the signature PDF file to be verified (step S701). Specifically, the operation display unit 202 accepts an input or instruction for the file name of the signature PDF file stored in the signature PDF storage unit 210. The document verification unit 205 verifies the time stamp and electronic signature of the signature PDF file (step S702). Thereby, the presence or absence of falsification of the original document and the self-written information can be verified. When the verification of the time stamp and the electronic signature is successful, that is, when it is determined that the original document and the self-written information are not falsified, the document verification unit 205 calculates a hash value of the range of the original document in the signature PDF file. (Step S703). The document verification unit 205 acquires a hash value included in the self-written information (step S704). The document verification unit 205 determines whether or not the hash value of the original document matches the hash value included in the self-written information (step S705). The operation display unit 202 displays the determination result (step S706). The determination result indicates whether or not the hash values match, that is, whether or not the original document is input to the original document.

  As described above, by executing the document verification process on the signature PDF file transmitted from the document generation server 100, whether the signature PDF file has been tampered with or not, the user has input to the original document whose contents have been confirmed. It can be confirmed whether it is a book.

  Furthermore, since the signature PDF file transmitted from the document generation server 100 is a PDF file, the user can display it with a widely distributed PDF reader without preparing special software, and the contents of the document. In addition, the user's handwriting that represents the handwriting of the user can be easily confirmed.

  In the above-described processing, the signature PDF file can be verified also in the document generation server 100 by performing the same processing in the operation display unit 106 and the document verification unit 107 of the document generation server 100. As a result, it is possible to verify that the signature PDF file stored in the signature PDF storage unit 140 of the document generation server 100 has not been tampered with, for example, by replacing its own document. Furthermore, it is possible to verify that the signature PDF file transmitted from other devices including the information terminal device 200 is not falsified.

  In the above-described embodiment, generation and verification of a PDF file including a process for giving an electronic signature and a time stamp to the self-written PDF file have been described. However, a process for giving an electronic signature and a time stamp is not essential. Therefore, by comparing the hash value calculated from the original document PDF file with the hash value included in the self-written information, only whether or not the user has written the original document PDF file is verified. Good. In addition, one of the electronic signature and the time stamp may be added to the self-written PDF file.

  Next, a second embodiment in which the user's biometric information is acquired and the user is authenticated with the acquired biometric information when receiving the input of the self-document will be described with reference to the accompanying drawings. The digital self-writing process according to the second embodiment will be described with a focus on differences from the first embodiment.

  FIG. 8 is a block diagram of the configuration of the digital self-writing system 20 according to the second embodiment. The document generation server 300 includes a web page storage unit 110, a layout template storage unit 120, an original document PDF storage unit 130, a signature PDF storage unit 140, a biometric information storage unit 350, a transmission / reception unit 101, an original document PDF generation unit 102, and a confirmation page. A generation unit 103, a character recognition unit 104, a self-document PDF generation unit 105, a signature PDF generation unit 106, an operation display unit 107, a document verification unit 108, and a biometric authentication unit 309 are provided. In addition, the same number is attached | subjected about the part which has the same function as Example 1, and description here is abbreviate | omitted.

  FIG. 9 is an explanatory diagram illustrating an example of a data configuration of the biological information storage unit 350. The biometric information storage unit 350 stores biometric information used for authenticating a user who operates the information terminal device 400. The biometric information storage unit 350 stores user identification information for identifying a user and biometric information indicating physical characteristics unique to the user in association with each other. The biometric information is information that can identify a user by physical characteristics such as a fingerprint, a palm print, an iris, and a vein.

  The biometric authentication unit 309 performs biometric authentication of the user. Specifically, the biometric authentication unit 309 searches the biometric information storage unit 350 for biometric information associated with the user identification information, and uses the retrieved biometric information and the biometric information transmitted from the information terminal device 400. Match.

  The information terminal device 400 includes a signature PDF storage unit 210, a transmission / reception unit 201, an operation display unit 402, a hash value calculation unit 203, a self-written information generation unit 204, and a document verification unit 205. In addition, the same number is attached | subjected about the part which has the same function as Example 1, and description here is abbreviate | omitted.

  In addition to the functions described in the first embodiment, for example, in the case of a pen-type input device, the operation display unit 402 reads the user's fingerprint using a sensor provided at a portion where the fingertip of the pen-type input device touches. In the case of a touch panel, biometric information is received by reading a user's fingerprint from the fingertip with a sensor built in the touch panel. In addition, by capturing a user with a camera including a CCD sensor (not shown), biometric information is acquired by various methods such as reading a face and an iris.

  A digital self-writing process for performing biometric authentication will be described. FIG. 10 is a flowchart showing a digital self-writing processing procedure (biometric authentication part) executed by the document generation server 300 and the information terminal device 400. The digital self-writing process of the second embodiment is the biometric authentication shown in FIG. 10 between steps S510 and S511 of the processes of FIGS. 5 and 6 (steps S501 to S531) that are the digital self-writing processes of the first embodiment. Add processing and execute.

  The operation display unit 402 receives biological information (step S1001). The transmission / reception unit 201 transmits user identification information and biometric information to the document generation server 300 (step S1002). Here, the user identification information includes the name and user ID received as input information, the My number which is a unique identification number assigned to each individual by the government, and the information terminal device 400 and input device used by the user. This is information that uniquely identifies a user that can be associated with the user, such as device identification information.

  The transmission / reception unit 101 of the document generation server 300 receives the user identification information and the biometric information (step S1003). The biometric authentication unit 309 acquires the biometric information associated with the user identification information from the biometric information storage unit 350, and collates the acquired biometric information with the biometric information transmitted from the information terminal device 400 (step S1004). . Specifically, it is determined whether or not the biological information stored in the biological information storage unit 350 matches the biological information transmitted from the information terminal device 400. Thereby, biometric authentication of a user is performed. The transmission / reception unit 101 transmits the collation result to the information terminal device 400 (step S1005).

  The transmission / reception unit 201 of the information terminal device 400 receives the collation result (step S1006). In step S511 of FIG. 5 to be executed next, it is determined that the biometric information stored in the biometric information storage unit 350 matches the biometric information transmitted from the information terminal device 400, that is, the user's biometric information has been authenticated. In the case, the process of accepting the input of the handwriting is executed. The biometric information stored in the biometric information storage unit 350 and the biometric information transmitted from the information terminal device 400 do not match, and the biometric information of the user cannot be authenticated, that is, it is determined that the operation is not an authorized user. If it does, an error message is displayed and the process is terminated without accepting the handwritten.

  In this way, it is possible to prevent improper application or application by impersonation by acquiring user's biometric information and checking it with pre-registered user's biometric information before accepting the input of own book can do.

  As another embodiment, the stroke data and image data of the user's own writing are stored as the biological information in the biological information storage unit 350 of the document generation server 300, and the input of the own writing is accepted. By generating the stroke data and image data of the self-writing and collating the generated stroke data and image data of the self-writing with the stroke data and image data of the self-writing stored in the biometric information storage unit 350 of the document generation server 300 Biometric authentication may be performed.

  Further, the biometric information collated by the document generation server 300 is not limited to authenticating with one piece of biometric information, and may be authenticated using a plurality of pieces of biometric information.

  The document generation servers 100 and 300 and the information terminal devices 200 and 400 according to the above-described embodiments include a control device such as a CPU (Central Processing Unit) that controls the entire device, and a ROM (Read Only) that stores various data and various programs. Communicates with an external computer and a main storage device such as a memory (RAM) and a random access memory (RAM), an external storage device such as an HDD (Hard Disk Drive) and a CD (Compact Disk) drive device that stores various data and various programs A communication control device for performing the above and a bus for connecting them, and has a hardware configuration using a normal computer. The CPU reads out the program from the HDD, expands it in the RAM, and operates it, thereby realizing the functions and processes described above. Each storage unit can be configured on a RAM or any commonly used storage medium such as an HDD, an optical disk, or a memory card.

  The program that realizes the above-described functions and processes that operate on the document generation servers 100 and 300 and the information terminal devices 200 and 400 is an installable format or executable format file such as a CD-ROM or DVD. It can also be provided by being recorded on a recording medium that can be read by the Internet, or can be provided by being downloaded via a network.

  The program for realizing the functions and processes described above may be provided in a usage form such as SaaS (Software as a Service) or cloud computing.

  The components of the document generation servers 100 and 300 and the information terminal devices 200 and 400 shown in the figure do not necessarily have to be physically configured as shown in the figure. That is, the specific modes of these devices are not limited to those shown in the drawings, and all or a part of them may be functionally or physically divided, integrated, or replaced in arbitrary units according to various loads or usage conditions. , Can be modified or deleted.

DESCRIPTION OF SYMBOLS 1 ... Network, 10 ... Digital self-writing system, 100, 300 ... Document generation server, 101 ... Transmission / reception part, 102 ... Original document PDF generation part, 103 ... Confirmation page generation part, 104 ... Character recognition part, 105 ... Self-writing PDF Generation unit 106 ... Signature PDF generation unit 107 ... Operation display unit 108 ... Document verification unit 309 ... Biometric authentication unit 110 ... Web page storage unit 120 ... Layout template storage unit 130 ... Original document PDF storage unit DESCRIPTION OF SYMBOLS 140 ... Signature PDF memory | storage part, 350 ... Biometric information memory | storage part, 200, 400 ... Information terminal device, 201 ... Transmission / reception part, 202, 402 ... Operation display part, 203 ... Hash value calculation part, 204 ... Self-written information generation part, 205: Document verification unit, 210: Signature PDF storage unit

Claims (10)

In a digital self-written system comprising an information terminal device and a document generation server connected to the information terminal device via a network,
The document generation server
An original document PDF generation means for generating an original document PDF file obtained by shaping the input information received by the information terminal device with a predetermined layout template;
The original document PDF file generated by the original document PDF generator and the address indicating the location where the original document PDF file is stored and the self-written area for receiving the input of the user's own handwritten handwriting A confirmation page generating means for generating a web page including information;
First transmitting means for transmitting the web page generated by the confirmation page generating means to the information terminal device,
The information terminal device
Page display means for displaying the web page transmitted from the document generation server;
Self-writing acceptance means for accepting input of the self-writing in the self-writing area;
A hash value calculating means for calculating a hash value from the original document PDF file stored at the location indicated by the location information included in the web page;
Self-written information generating means for generating self-written information based on the self-written received by the self-written receiving means;
Second transmission means for transmitting the self-written information including the hash value to the document generation server,
The document generation server
A self-written PDF generation means for generating a self-written PDF file in which the self-written information including the hash value transmitted from the information terminal device is added to the original document PDF file;
A digital self-writing system characterized by comprising:   2. The digital self-writing system according to claim 1, further comprising signature PDF generation means for assigning an electronic signature and a time stamp to the self-writing PDF file. The self-written information is
3. The digital self-writing system according to claim 1, further comprising stroke data of the self-writing acquired from the input of the self-writing. The self-written information is
Furthermore, image data generated from the stroke data of the self-writing,
Self-written date and time information indicating the date and time when the input of the self-written is accepted,
Self-writing position information indicating the position where the input of the self-writing is accepted;
4. The digital self-writing system according to claim 3, further comprising at least one of text data obtained by character-converting stroke data of the self-writing. The information terminal device
Biometric information receiving means for receiving input of the user's biometric information,
The second transmitting unit transmits the biometric information received by the biometric information receiving unit and user identification information for identifying the user to the document generation server,
The document generation server
Biometric information storage means for storing the user identification information and biometric information indicating physical characteristics unique to the user in association with each other;
Biometric authentication means for judging whether or not the biometric information received by the information terminal device matches the biometric information stored in the biometric information storage means and associated with the user identification information. In addition,
When the biometric authentication unit determines that the biometric information received by the information terminal device matches the biometric information associated with the user identification information, the self-sign accepting unit The digital self-writing system according to claim 1, wherein the digital self-writing system according to claim 1 is received. In the document generation server or the information terminal device,
The original document PDF file formed from the original document PDF file including the hash value of the original document PDF file is added to the original document PDF file obtained by shaping the input information with a predetermined layout template. document verification means for verifying the dictionary PDF files, further comprising a,
The document verification means determines whether or not a hash value included in the self-written information matches a hash value calculated from the original document PDF file;
The digital self-written system according to any one of claims 1 to 5. A method executed by an information terminal device and a document generation server connected to the information terminal device via a network,
The document generation server
An original document PDF generation step of generating an original document PDF file in which the input information received by the information terminal device is formed with a predetermined layout template;
The original document PDF file generated by the original document PDF generation step, and a self-written area for receiving input of the user's own handwritten handwriting, and a location indicating the location where the original document PDF file is stored A confirmation page generating step for generating a web page including information;
A first transmission step of transmitting the web page generated by the confirmation page generation step to the information terminal device,
The information terminal device
A page display step for displaying the web page transmitted from the document generation server;
A self writing acceptance step for accepting input of the self writing in the self writing area;
A hash value calculating step of calculating a hash value from the original document PDF file stored at the location indicated by the location information included in the web page;
A self-written information generating step for generating self-written information based on the self-written received by the self-written receiving step;
A second transmission step of transmitting the self-written information including the hash value to the document generation server,
The document generation server
A self-written PDF generation step of generating a self-written PDF file in which the self-written information including the hash value added from the information terminal device is added to the original document PDF file;
A method comprising the steps of: Executed by the document generation server or the information terminal device ;
The original document PDF file formed from the original document PDF file including the hash value of the original document PDF file is added to the original document PDF file obtained by shaping the input information with a predetermined layout template. document verification step of verifying the dictionary PDF files, further comprising a,
The document verification step determines whether or not a hash value included in the self-written information matches a hash value calculated from the original document PDF file;
The method according to claim 7 . To the document generation server connected to the information terminal device via the network,
An original document PDF generation step of generating an original document PDF file in which the input information received by the information terminal device is formed with a predetermined layout template;
  The original document PDF file generated by the original document PDF generation step, and a self-written area for receiving input of the user's own handwritten handwriting, and a location indicating the location where the original document PDF file is stored A confirmation page generating step for generating a web page including information;
  A transmission step of transmitting the web page generated by the confirmation page generation step to the information terminal device;
  The original document stored in the location indicated by the location information included in the web page in the self-written information generated based on the self-written text received in the self-written region of the web page displayed on the information terminal device Receiving the self-written information including the hash value calculated from the document PDF file;
  A self-written PDF generation step of generating a self-written PDF file in which the self-written information including the hash value received by the receiving step is added to the original document PDF file;
A program characterized by having executed. The original document PDF file formed from the original document PDF file including the hash value of the original document PDF file is added to the original document PDF file obtained by shaping the input information with a predetermined layout template. A document verification step for verifying the self-written PDF file,
  10. The program according to claim 9, wherein the document verification step determines whether or not a hash value included in the self-written information matches a hash value calculated from the original document PDF file. .

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