JP2004222007A - Content certification system and user terminal equipment - Google Patents

Abstract

[PROBLEMS] To provide a content certifying system that can cope with a case where there are a plurality of senders and receivers, can create and send a content certificate using a personal computer over a network, and can confirm the content using a personal computer. That is the task.
In a content certification system for electronic form document data used by a user using an IC card, a server device of a content certification service organization and a plurality of user terminals are connected via a network. A program for executing a client function provided in a terminal, when there are a plurality of form creators, enables a signature button for each person on the form entry interface, and each time the signature button is pressed, a corresponding form creator In order to solve the above-mentioned problem, the electronic signature data is added to the electronic form data to provide a function for adding an electronic signature of each entry creator when the electronic form is filled in by a plurality of persons.
[Selection] Fig. 9

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a content certification system in which a content certification service such as a content certification mail is digitized.
[0002]
[Prior art]
For services such as registration, management, and browsing of content certificates that were conventionally performed on paper, it was usually necessary for the user to visit the service provider's window to apply. In addition, although a service for only applying for a service, such as Non-Patent Literature 1, has been started through the Internet, the actual content certificate is output on paper, so the processing load on the service provider is reduced. Not necessarily.
[0003]
A technology for certifying contents of digital information exchanged over a network has also been developed. In Patent Literature 1, a content certifying organization with a computer center is interposed between a transmitting terminal device and a partner terminal device, and an encrypting program and a content certifying program are built in the sender terminal device, and e-mail transmission is performed. A transmitting means for transmitting the contents to the computer once is provided, and the content certification authority has a program capable of recording, reading, and distributing the transmitted contents from the transmitting means and appropriately issuing a certificate. It is equipped with receiving / distributing means for automatically transmitting the contents of transmission from the computer center to the other party after recording the contents transmitted from the means, and responding to the request of the parties when it becomes necessary for the parties to prove the transmission contents to the third party An electronic device having a content proof transmission unit capable of reading out the transmission content recorded in the computer center and issuing a document certifying the content. Lumpur transmission content certification system apparatus is disclosed. Patent Documents 2 to 4 also disclose similar technologies.
[0004]
In addition, a system has been developed in which operations performed conventionally through forms such as applications to government agencies, notification documents, application forms to companies, and the like are realized by electronic forms (hereinafter, electronic forms) via a network such as the Internet. Patent Literature 5 and Patent Literature 6 disclose an electronic form production apparatus, an electronic form providing apparatus, and an electronic form distribution system.
[0005]
[Patent Document 1]
Japanese Patent No. 3299928 (pages 1-8, FIG. 1-2)
[Patent Document 2]
JP 2001-189723 A [Patent Document 3]
Japanese Patent Application Laid-Open No. 2002-24177 [Patent Document 4]
Japanese Patent Application Laid-Open No. 2002-64535 [Patent Document 5]
JP-A-2002-63543 (page 1-13, FIG. 1-9)
[Patent Document 6]
JP-A-2002-123789 (Pages 1-9, FIGS. 1-4)
[Non-patent document 1]
http: // www3. hybridmail. go. jp / mpt / explain. html
(Postal Service Agency Electronic Content Certification Service Homepage)
[0006]
[Problems to be solved by the invention]
The systems disclosed in Patent Documents 1 to 4 can realize a system that allows a third party to certify the content of transmitted e-mail or created document data. Basically, when an electronic form is targeted, the electronic form may include document data of the electronic form provider (for example, a contract printed on the back of the car insurance application form). Since it is necessary to confirm whether the form itself is valid, there is a problem that it cannot be applied as it is. In addition, for example, as in the case of a marriage registration, there may be a case where a plurality of creators prepare an application or a notification document to a government office or the like, and the above-described conventional technology does not cope with such a case.
[0007]
The present invention has been made in view of such a problem, and aims to provide a system that can certify the contents of a document created by an electronic form. The contents of the electronic form can be confirmed as legitimate, it can handle multiple senders and recipients, and the sender can create and send a certificate of contents using a personal computer over the network, and receive It is an object of the present invention to provide a content certifying system in which the contents can be confirmed by a personal computer.
[0008]
[Means for Solving the Problems]
According to a first aspect of the present invention, a server device of a content certification service organization and a plurality of user terminals are connected to each other via a network, and electronic form document data used by a user using an IC card is provided. A content certification system,
A form acquisition unit that acquires an electronic form requested by a user from the server device, a form verification unit that verifies that the acquired electronic form data is valid electronic form data that has not been modified, and an electronic form. Forms on the screen to provide a user with a form entry interface, a digest of the contents of the created document is created, and the digest is sent to the user's own IC card. Signature stamping means for adding a signature to an electronic form document; form transmission means for transmitting the signed and stamped document data to a server of a content certification service institution; and a reception notice or delivery notice issued by the content certification service institution. Registered or distributed based on the attached URL A registration form browsing means for browsing the contents and status of documents, there is having a,
The server device of the content certification service organization manages a storage database holding electronic form data for content certification, and obtains a form providing unit for providing a requested blank electronic form to a user, and a time signature. Time signing means for adding to the electronic form data, database registration means for registering the electronic form data in the storage database, registration form notifying means for notifying a recipient or form creator of the delivery or acceptance of the electronic form, A registration form disclosure means for providing content certification information in response to a content certification request,
The IC card used by the user is recorded with a certificate of the owner and a private key, and is provided with signature creation means for encrypting the transmitted data with the private key,
The form filling means validates a signature button for each person on the form filling interface when there are a plurality of form creators, and the signature stamping means makes each time the signature button is pressed a corresponding electronic signature of the form creator. Content certification of electronic form document data, characterized in that when data is added to electronic form data, an electronic signature of each entry creator can be added when an electronic form is filled in and created by a plurality of persons. System.
[0009]
At the user terminal device, before filling in the electronic form, the form verification means checks the validity of the electronic signature attached to the obtained electronic form data. You can identify the form.
[0010]
According to a second aspect of the present invention, a server device of a content certification service organization and a plurality of user terminals are connected to each other via a network, and the electronic form document data used by a user using an IC card is provided. A user terminal device used in a content certification system,
The user terminal device includes: a form obtaining unit that obtains an electronic form requested by a user from the server device; a form verification unit that verifies that the obtained electronic form data is valid electronic form data that has not been modified; Form entry means for displaying the form on the screen and providing the user with a form entry interface, creating a digest of the contents of the created document, sending the digest to the user's own IC card, Signature stamping means for adding an electronic signature to an electronic form document, a form transmitting means for transmitting the signed and stamped document data to a server of a content certification service organization, and an acceptance notice or delivery notice issued by the content certification service organization Registered based on the URL attached to It is one that includes a registration form browsing means for browsing the contents and status of the delivery document, and
The IC card used by the user is recorded with a certificate of the owner and a private key, and is provided with signature creation means for encrypting the transmitted data with the private key,
The form filling means validates a signature button for each person on the form filling interface when there are a plurality of form creators, and the signature stamping means makes each time the signature button is pressed a corresponding electronic signature of the form creator. A user terminal device characterized in that, when data is added to electronic form data, an electronic signature of each entry creator can be added when an electronic form is entered and created by a plurality of persons.
[0011]
A third invention for solving the problem is a computer program describing a series of instructions for causing a computer including an IC card reader / writer to function as a user terminal device according to the second invention.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a content certification system 1 (hereinafter, system 1) according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram illustrating the overall configuration of the system 1. The system 1 is configured by connecting a server device 41 installed on a site 40 of a service provider A and personal computers 10 and 30 used as terminal devices of a user via the Internet 9. The personal computer 10 is a personal computer used by the sender B in FIG. The personal computer 30 is a personal computer used by the receiver C. The personal computer of the user is provided with a printer 11 or 31 and an IC card reader / writer, and the user inserts and uses the IC card 20 or 60 for authentication in the personal computer. The site 40 of the service provider A is provided with a storage database 42 for storing document data registered for the purpose of certifying other contents of the server device 41. Reference numeral 50 denotes a time notarization site. It is accessed from the server device 41 when obtaining the time certification of the document data. In FIG. 1, reference numeral 8 denotes a network of settlement financial institutions, and reference numeral 7 denotes a gateway connected to the network 8 of settlement financial institutions. The service provider A charges the user for depositing the content certification document, but in order to make the payment by electronic payment, the site 40 of the service provider A is connected to the gateway 7 connected to the network 8 of the settlement financial institution. [0013]
Next, an operation flow of the content certification service by the system 1 will be described with reference to FIGS. The description will be given with reference to the diagrams schematically showing the electronic form data of FIGS. 4 to 6 as appropriate.
1) An electronic form to be used for the content certificate (a form before entry; hereinafter, an “empty form”) is registered in the server device 41 in advance (the empty form includes an electronic form issuer or service provider). It is also possible to sign the person A). The electronic form distribution server may be provided as a server different from the server device 41. FIG. 4 is a schematic diagram showing an example of blank form data. In the case of FIG. 4, the empty form data 100 is composed of a clause 110 with a digital signature 111 of the form issuer and a form body 120.
2) The sender B and the receiver C store the certificates of B and C managed by the service provider A and their private keys in the IC cards 20 and 60, respectively, in advance. (That is, in this case, A also has a function as a certificate authority.)
3) First, the caller B accesses the service provider A's HP from the personal computer 10 connected to the Internet 9 and inserts the IC card 20 into the card reader / writer of the personal computer 10, thereby making the service provider A's site available. Get user authentication. Next, the required electronic form is called up and an empty form is displayed on the screen (Fig. 2 (1)).
4) Caller B fills in empty form on PC 10 with necessary data. When the sender B fills in the content, there is no need to input the personal information, such as the address and name of B, since it is already registered in the IC card and the content is transcribed to each field on the cover of the electronic form. . The contents to be described include the text of the electronic form (text for filling in required items and text for non-essential items), the name of the recipient (destination) (name for an individual), e-mail address (required), This is the destination information such as the address and telephone number.
5) Finally, using the secret key of sender B in the IC card, an electronic signature for the entire form including this description is generated and stored in the signature field. If there are multiple senders, the first sender will sign the digital signature, and then insert the IC cards of the other senders in order to transfer / input personal information to the cover and add a signature. Do this for each sender. At this time, sender information is added.
6) After confirming the contents, by pressing the send button on the electronic form entry interface screen, the contents certification form is sent to the server device 41 of the service provider A (FIG. 2 (2)). Fig. 5 schematically shows the completed data sent at this time. This is document data in which necessary items are entered in the blank form 100 and the electronic signature 101 of the sender is attached to the entire state with the destination information 102 attached.
7) The service provider A verifies the signature 101 of the sender B, obtains the reception date and time from the time notarization site 50, embeds it in the form, adds an electronic signature using A's own private key, and adds the common key R And the data is stored in the storage database 42 (FIG. 2 (3)). FIG. 6 schematically shows data 140 stored in the storage database 42. Reference numeral 104 denotes time signature data of the reception time obtained from the time notarization site 50. Reference numeral 103 denotes signature data (acceptance signature) of the service provider A indicating that the service provider A has accepted the data and registered the data in the storage database 42 at the time indicated by the time signature 104. The bold line indicates that the whole is encrypted by the common key R.
8) The service provider A notifies the receiver C by e-mail that the content proof electronic form has been received from the sender B. At this time, the URL in which the content certification electronic form is stored is described in the e-mail, and the electronic certificate of (A) and the electronic certificate of (A) B (if there are a plurality of B, A plurality of certificates) and (c) the common key R encrypted with the recipient C's public key are attached (FIG. 2, (4)). The present invention can cope with a case where there are a plurality of recipients. In such a case, each receiver prepares (C) a common key R encrypted with a public key, and sends the above notification mail to each receiver (A) the electronic certificate of (A); ) Attached with B's digital certificate.
9) At the same time, the service provider A also notifies the sender B by e-mail that the content proof electronic form has been accepted. At this time, the mail contains the URL where the electronic form is stored, and (A) the electronic certificate of A and (D) the common key R encrypted with the sender B's public key. Is attached (Fig. 3 (5)).
10) Receiving the above notification, the recipient C accesses the URL by receiving the personal authentication based on the recording data of his / her IC card, and calls the content certification form 140 (FIG. 3, (6)). Next, after decrypting the encrypted common key R attached earlier with the secret key of the receiver C, the encrypted electronic form 140 is decrypted using the common key R, and Using the public key of A and the public key of sender B, the validity of the digital signature added to the content certificate is verified. Thus, the receiver C can confirm that the content proof is definitely sent from the sender B and the service provider A guarantees the validity.
11) When the service provider A confirms that the content certification form 140 has been called by the receiver C, the service provider A obtains the calling time from the time notarization site as a delivery confirmation time and attaches it to the form (FIG. 3A). 7 ▼). FIG. 10 schematically shows content proof data stored in the storage database 42 with the delivery time signature 106 obtained from the time notary site and the delivery signature 107 of the service provider A added.
12) The sender B can use the IC card for authentication at any time and access the above URL to confirm his / her content certificate. At this time, the encrypted common key R attached earlier is decrypted with the secret key of B, and the content certification form 140 is decrypted using the common key R. Further, by verifying the signature with the public key of the service provider A, it is possible to confirm that the content proof electronic form 140 transmitted by the user is surely accepted by the service provider A together with the description contents thereof ( (8). Further, by verifying the delivery time signature 106 and the delivery signature 107, it can be confirmed that the receiver C has received the form at that time.
[0014]
Next, how the content certifying system 1 performing the above operation is realized will be described. The server device 41 and the user terminal devices 10 and 30 of the service provider A are connected via the Internet 9. Therefore, the system 1 can be constructed based on the WWW (World Wide Web) technology. That is, the server device 41 is provided with WWW server software (hereinafter referred to as a Web server), and the user terminal devices 10 and 30 are provided with WWW browsers (hereinafter referred to as browsers). (HyperText Transfer Protocol). The data to be exchanged uses an SSL (Secure Socket Layer), which is an encrypted data transmission / reception function provided as standard in the Web server and the browser as necessary.
[0015]
FIG. 7 is a block diagram illustrating the configuration of the user terminal device 10 of the present system. The user terminal device 10 obtains the electronic form requested by the user from the service site by using the form obtaining means 12. If the obtained electronic form has the electronic signature of the form provider, the electronic form data is used by using the electronic signature. Form verification means 13 for verifying whether or not the alteration has been made and displaying the electronic form on the screen when it is determined that the electronic form has not been altered. Form entry means 14 for providing a dialogue interface, signature sealing means 15 for attaching the creator's digital signature to the entire electronic form data, form transmission means 16 for sending the created electronic form document to service provider A, service provider A registration form viewer who browses document data registered in the storage database 42 of A It can be configured by 17.
[0016]
The form acquisition unit 12 is realized by a function of a browser provided in the user terminal device 10. For example, the URL of the server device 41 of the service provider A in which the Web server and the FTP server are installed may be set from a browser, an HTML page for downloading an electronic form may be displayed on the browser screen, and the download may be performed. The form verification unit 13 is a program for verifying a digital certificate and a digital signature attached to electronic form data downloaded by a user. This program is an existing technology and can be realized by those skilled in the art. For example, FIGS. 7, 8 and [0058] to [0075] of Patent Document 5 specifically describe a specific example of a method for an end user to verify a digital certificate and a digital signature attached to an electronic form. A person having ordinary skill in the art can create a program for verifying a digital certificate and a digital signature by exerting ordinary creativity.
[0017]
The form entry means 14, the signature sealing means 15 and the form transmission means 16 can be realized as one application program started by the form verification means 13, for example. The form entry means 14 can be realized as a program having an interactive input interface function having a function of generating data entered by the creator as data in an XML (extensible Markup Language) format suitable for expression of an electronic form. FIG. 9 shows an example of the interactive screen interface 200 provided by the form entry means 14. An embodiment of the form entry unit 14 will be described with reference to the interactive screen interface 200 of FIG.
[0018]
In the example of FIG. 9, it is possible to fill in each leaf with respect to a plurality of electronic forms. First, in a state where the cover page 220 is displayed in the body display field of 209, the user inputs information of a form creator (sender) and a form destination (recipient). When there are a plurality of senders or receivers, pressing the add button 221 adds an entry field and scrolls it, so that it is possible to add as many as necessary. The sender's data is registered in each sender's IC card, and when each sender inserts the IC card into the card reader / writer in order and presses the add button 221, the contents are transferred to each field. When there are a plurality of senders, an additional signature button is created as needed as necessary on the right of the signature button 210 and becomes valid. Each signature button corresponds to a registered sender. Next, by appropriately selecting the previous page button 201 and the next page button 202, a desired page can be displayed in the body display field of 209, and information can be entered in the electronic form. When the electronic form is completed, the sender's IC card is inserted into the card reader / writer, and the signature button 210 is pressed to create the corresponding sender's electronic signature data. Appended to form data. If there are a plurality of senders, inserting the IC card of the next sender and pressing the corresponding signature button is repeated as necessary. The sender's electronic signature data generated by the IC card is added to the electronic form data as a signature tag. In the present system, in the case of a plurality of senders (creators), a plurality of signature buttons are prepared, so that a plurality of signature tags are created and added.
[0019]
If you want to temporarily stop the work during the description of the content certificate or when adding and signing information of a plurality of senders, press the save button 203 on the outer frame of the electronic form to input the information until then. The saved data can be saved in an arbitrary folder of the personal computer 10, and when resuming the input, the electronic form (empty form) is called again and the read data 204 is pressed by pressing the read button 204 in the outer frame of the form. It is possible to resume the continuation after taking in and interrupting. In addition, a print button 205 for data to be displayed, a confirmation button 206 for entry data, and a transmission button 207 for the entered electronic form data are provided as interfaces.
[0020]
The signature stamping means 15 is activated when a signature button 210 is clicked on the interactive screen interface 200. A hash value is calculated by a hash function for a portion of the electronic form data to which a writer wants to add a signature (in the example of FIGS. 4 and 5, the entry contents and destination information for the terms and conditions portion 110 and the form portion 120). To the IC card 20 inserted in the personal computer 10 together with a digital signature creation command. The IC card 20 receives this hash value, and performs predetermined processing on the data combined with the owner certificate 23 recorded in the internal nonvolatile memory by using the owner private key 22 also recorded in the internal nonvolatile memory. To create a digital signature of the form creator. The signature stamping means 15 reads out the created electronic signature data from the IC card 20 and adds it to the electronic form data, thereby creating the filled-in electronic form data schematically shown in FIG. The form transmitting unit 16 may transmit the data to the server 41 using the HTTP protocol after encrypting the data by SSL.
[0021]
The registration form browsing means 17 provides a function of requesting content proof for the electronic form created or received by the user from the storage record of the storage database 42 and acquiring the content proof information. If the process of decrypting the content certification information with the common key R is manually performed, it can be realized by the function of the browser provided in the user terminal device 10.
[0022]
The server device 41 is a WWW server software that distributes required data to a server computer by the HTTP protocol, and an application program called from the WWW server software, such as a form providing unit 43, a time signature unit 44, and database registration. This can be realized by including a unit 45, a registration form notification unit 46, and a registration form disclosure unit 47.
[0023]
The form providing means 43 is a program for selecting empty form data according to a user's request and requesting the WWW server software for distribution. The time signature unit 44 is a program that accesses the time notarization site 50 to obtain a time signature, and adds the time signature together with either the acceptance signature or the delivery signature to the completed electronic form data. The database registration unit 45 is a program that encrypts the electronic form data that has been filled and the electronic signature is attached with the common key R, and registers the encrypted electronic form data in the storage database 42. The registration form notification means 46 creates a notification that the filled electronic form has been sent to the recipient and a notification that notifies the sender that the completed electronic form has been accepted and registered in the storage database 42. And a program for notifying the receiver and the sender, respectively. The registration form disclosing means 47 discloses and creates the electronic form data stored in the storage database 42 when the creator (sender) and the receiver make a content certification request. This is a program that provides information proving the person, the destination, and the delivery time. Without the common key R, these information cannot be browsed.
[0024]
The server device 41 may be provided with an electronic payment means in order to charge a user for a registration fee or a management fee for electronic form data, or to charge a service fee every time content certification is performed, and to perform this by electronic payment. It is possible. The user of this service needs to have the service provider A issue a certificate in advance, but at that time, the service provider A holds the master data including the account information of the user's financial institution, etc. It is assumed that In this case, a message is called at the time of data registration or content proof request, and a message for requesting a user's account of the requesting user to pay a usage fee is created and transmitted to the gateway 7 connected to the network 8 of the financial institution. The program may be prepared as an electronic payment means.
[0025]
【The invention's effect】
As described above in detail, the content certification system according to the present invention has a remarkable effect that it is possible to transmit electronic form data created by a plurality of persons with a content certification function.
[Brief description of the drawings]
FIG. 1 is a schematic diagram illustrating an entire configuration of a content certification system 1 according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating a service operation flow of the system 1.
FIG. 3 is a diagram illustrating a service operation flow of the system 1.
FIG. 4 is a schematic diagram showing blank form data.
FIG. 5 is a schematic diagram showing completed form data.
FIG. 6 is a schematic diagram showing data stored in a storage database 42;
FIG. 7 is a detailed explanatory diagram of a personal computer and an IC card as user terminals.
FIG. 8 is a detailed explanatory diagram of a server device 41.
FIG. 9 is a diagram for explaining an interactive screen interface provided by the form entry means 14;
FIG. 10 is a diagram schematically showing content proof data to which a delivery time signature 106 and a delivery signature 107 of the service provider A are added and stored in the storage database 42;
[Explanation of symbols]
1 Content Certification System 7 Gateway 8 Payment Institution Network 9 Internet 10 User Terminal (PC)
11 Printer 20 IC card 30 User terminal device (PC)
31 Printer 40 Service provider equipment 41 Server device 42 Storage database 50 Time notary site

Claims (3)

A content certification system for electronic form document data, wherein a server device of a content certification service organization and a plurality of user terminals are connected via a network, and the user uses an IC card,
A form acquisition unit that acquires an electronic form requested by a user from the server device, a form verification unit that verifies that the acquired electronic form data is valid electronic form data that has not been modified, and an electronic form. Forms on the screen to provide a user with a form entry interface, a digest of the contents of the created document is created, and the digest is sent to the user's own IC card. Signature stamping means for adding a signature to an electronic form document; form transmission means for transmitting the signed and stamped document data to a server of a content certification service institution; and a reception notice or delivery notice issued by the content certification service institution. Registered or distributed based on the attached URL A registration form browsing means for browsing the contents and status of documents, there is having a,
The server device of the content certification service organization manages a storage database holding electronic form data for content certification, and obtains a form providing unit for providing a requested blank electronic form to a user, and a time signature. Time signing means for adding to the electronic form data, database registration means for registering the electronic form data in the storage database, registration form notifying means for notifying a recipient or form creator of the delivery or acceptance of the electronic form, A registration form disclosure means for providing content certification information in response to a content certification request,
The IC card used by the user is recorded with a certificate of the owner and a private key, and is provided with signature creation means for encrypting the transmitted data with the private key,
The form filling means validates a signature button for each person on the form filling interface when there are a plurality of form creators, and the signature stamping means makes each time the signature button is pressed an electronic signature of the corresponding form creator. Content certification of electronic form document data, characterized in that when data is added to electronic form data, an electronic signature of each entry creator can be added when an electronic form is filled in and created by a plurality of persons. system. A user terminal device used in a content certification system for electronic form document data used by a user using an IC card, wherein a server device of a content certification service organization and a plurality of user terminals are connected via a network. So,
The user terminal device includes: a form obtaining unit that obtains an electronic form requested by a user from the server device; a form verification unit that verifies that the obtained electronic form data is valid electronic form data that has not been modified; Form entry means for displaying the form on the screen and providing the user with a form entry interface, creating a digest of the contents of the created document, sending the digest to the user's own IC card, Signature stamping means for adding an electronic signature to an electronic form document, a form transmitting means for transmitting the signed and stamped document data to a server of a content certification service organization, and an acceptance notice or delivery notice issued by the content certification service organization Registered based on the URL attached to It is one that includes a registration form browsing means for browsing the contents and status of the delivery document, and
The IC card used by the user is recorded with a certificate of the owner and a private key, and is provided with signature creation means for encrypting the transmitted data with the private key,
The form filling means validates a signature button for each person on the form filling interface when there are a plurality of form creators, and the signature stamping means makes each time the signature button is pressed an electronic signature of the corresponding form creator. A user terminal device, wherein, when data is added to electronic form data, an electronic signature of each entry creator can be added when an electronic form is filled in by a plurality of persons. A computer program describing a series of instructions for causing a computer including an IC card reader / writer to function as the user terminal device according to claim 2.

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