JP2006235885A - Document digitization method, document digitization apparatus and document digitization program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a document digitization method, a document digitization apparatus and a document digitization program that can efficiently create appropriately signed electronic documents. <P>SOLUTION: According to the type of a document to be digitized, electronic saving requirement data is acquired from an electronic saving requirement data storage part 25. According to the electronic saving requirement data, a control part 21 of an MFP 20 decides a signature process. The MFP 20 reads under a color condition and resolution stored in the electronic saving requirement data storage part 25 to generate PDF file data. The MFP 20 then signs by the signature process decided according to the electronic saving requirement data. Specifically, a hash value is calculated and encrypted with a secret key to generate signature data. The signature data is attached to the PDF file data. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a document digitizing method, a document digitizing apparatus, and a document digitizing program for electronically saving a document that has been conventionally saved on paper.

  Various documents are often stored on paper media. In particular, forms, financial statements, and minutes of meetings of the Board of Directors are required to be stored in paper by the Commercial Code and Tax Law, which has been an impediment to streamlining business operations. On the other hand, with the spread of computer technology, a paper document may be scanned, digitized as image data, and stored as an electronic document. Electronic documents can reduce printing, distribution, and storage costs, and can improve operational efficiency.

  However, since electronic documents are easier to falsify than paper documents, tampering prevention measures are necessary. Therefore, in order to solve such a problem, a technique is known in which scan data of a paper document is managed by adding information indicating that the data is indeed data scanned from a paper document (for example, Patent Document 1).

In Patent Document 1, a paper document is converted into electronic data by a scanner, and an electronic signature calculated based on the converted electronic data is stored in the data management server as a conversion processing result together with the converted electronic data. This makes it possible to guarantee the relationship between the paper document and the scan data.
JP 2002-230202 A (first page)

  Today, with the progress of the information society, even documents that had been obligated to be stored on paper have been legally allowed to be stored using electronic data (for example, “ The “Technology Law”, the so-called “e-Document Law”, etc., is being developed. In addition, the degree of request for requirements (tamper prevention measures, etc.) for ensuring authenticity and visibility varies depending on the content and nature of the document. For this reason, necessary requirements (for example, addition of an electronic signature) may be defined depending on the type of electronic document. However, there are many types of documents, and it is cumbersome to store the documents while considering the storage requirements of each document. On the other hand, if uniform authentication technology and storage technology are used, the storage capacity and the like become large, and an electronic document cannot be created and stored efficiently.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a document digitizing method, a document digitizing apparatus, and a document electronic that can efficiently create an electronic document with an appropriate signature. Is to provide a computerized program.

In order to solve the above-described problems, the invention described in claim 1 includes an electronic storage requirement data storage unit that stores data relating to an electronic storage requirement according to a document type, a reading unit, and a control unit that controls these. A document digitizing method for creating an electronic document using a document digitizing apparatus comprising: the control means, based on the document type of the document, from the electronic storage requirement data storage means. An acquisition step of acquiring data relating to the electronic storage requirement of the document type, and a file data creation step of generating a document file data by reading the document using the reading unit and converting it into digital data based on the electronic storage requirement, Identifying the type of electronic signature included in the electronic storage requirement, obtaining signature data generated using private key data for generating the electronic signature, A signature processing step of performing the signature process to be added to the book file data, and be required to perform a recording step for recording the document file data added with the signature data.

  According to a second aspect of the present invention, in the document digitization method according to the first aspect, when there are a plurality of types of electronic signatures included in the electronic storage requirement, the control means determines the type of electronic signature. Accordingly, each signature process is specified and executed, and a summary display stage for displaying a progress status of each process is provided during execution.

  According to a third aspect of the present invention, in the document digitizing method according to the first or second aspect, the document digitizing apparatus holds data relating to a secret key unique to the document digitizing apparatus, and the signature processing step includes If the device signature used for digitization is included as the type of electronic signature included in the electronic storage requirement, the gist is to create signature data using a secret key unique to the document digitizing device .

  According to a fourth aspect of the present invention, there is provided an electronic storage requirement data storage means for storing data relating to electronic storage requirements according to a document type, a reading means, and a control means for controlling these, and creates an electronic document. A document digitizing apparatus for obtaining the data related to the electronic storage requirement of the document type from the electronic storage requirement data storage unit based on the document type of the document; Based on the electronic storage requirement, the document is created using the reading unit and is converted into digital data to create document file data, and the type of the electronic signature included in the electronic storage requirement is specified. A signature process for obtaining signature data generated using secret key data for generating an electronic signature and executing a signature process to be added to the document file data And means, and summarized in that and a recording means for recording the document file data added with the signature data.

  The invention according to claim 5 includes an electronic storage requirement data storage unit that stores data relating to the electronic storage requirement according to the document type, a reading unit, and a control unit that controls these, and creates an electronic document. An electronic computer program for obtaining the electronic storage requirement data of the document type from the electronic storage requirement data storage unit based on the document type of the document. Based on a storage requirement, a file data creation means for creating a document file data by reading a document using the reading means and converting it to digital data, and identifying the type of electronic signature included in the electronic storage requirement A signature for obtaining signature data generated using secret key data for generating the signature and executing signature processing to be added to the document file data Physical means, and made to function as a recording means for recording the document file data added with the signature data and subject matter.

(Function)
According to the present invention, the control unit uses the electronic storage requirement of the document type acquired from the electronic storage requirement data storage unit, reads the document using the reading unit, converts the document into digital data, and creates document file data. The control means identifies the type of electronic signature included in the electronic storage requirement, acquires signature data generated using the private key data for generating this electronic signature, and adds it to the document file data. For this reason, the control means can create an electronic document corresponding to the electronic storage requirement according to the type of the electronic document.

  According to the present invention, the control means specifies and executes each signature process according to the type of electronic signature included in the electronic storage requirement, and displays the progress status of each process during the execution. For this reason, the operator can grasp the progress of computerization.

According to the present invention, the control means creates signature data using the secret key unique to the document digitizing apparatus used for digitization as the type of electronic signature. Therefore, the electronic document can be authenticated by the document digitizing apparatus that created the document file data.

  According to the present invention, it is possible to efficiently create an electronic document with an appropriate signature.

Hereinafter, an embodiment embodying the present invention will be described with reference to FIGS.
As shown in FIG. 1, a computer terminal 10 and an MFP 20 (; Multi Function Printer) are connected via a network N.

  The computer terminal 10 is a terminal used by a viewer who browses an electronic document, and includes output means such as a display and input means such as a keyboard and a mouse. A screen showing the contents of the electronic document and the contents of the electronic signature attached to the electronic document is output to the display.

  Further, the time authentication server 30 can be connected to the MFP 20 via the network N. The time authentication server 30 is a server that performs an electronic signature on the time. The time authentication server 30 generates a time signature obtained by encrypting the reception time data of the data by using the secret key of the time certificate authority, and returns it to the sender.

  On the other hand, the MFP 20 has functions such as a printer, a facsimile, a copying machine, and a scanner. The MFP 20 includes a control unit 21, an operation panel unit 22 controlled by the control unit 21, a scanner unit 23 as a reading unit, an IC card reader unit 24, and an electronic storage requirement data storage as an electronic storage requirement data storage unit. Unit 25 and file data storage unit 26. The control unit 21 includes control means (CPU), storage means (RAM, ROM, etc.), communication means, and the like. Here, the device private key data and document creation program data unique to the MFP 20 are recorded in the storage means of the control unit 21. By using this device secret key data, it is possible to identify and authenticate which MFP 20 was created using. In the document creation program data, a program for performing document creation processing described later is recorded.

  The control unit 21 performs processing described later (processing including an acquisition stage, a file data creation stage, a signature processing stage, a recording stage, a progress display stage, and the like). By executing the document digitizing program for this purpose, the control unit 21 functions as an acquisition unit, a file data creation unit, a signature processing unit, a recording unit, a progress display unit, and the like. Note that the MFP 20 of the present embodiment can execute device signature processing, personal signature processing, and time signature processing as signature processing.

  The operation panel unit 22 is a user interface for operating the MFP 20 and includes a touch panel and operation buttons. This operation button is used for the user to make various inputs. As will be described later, the touch panel provides information to the user by displaying data received from the control unit 21 on the screen, or provides an instruction from the user to the control unit 21.

  The scanner unit 23 is a unit that has a scanning function and optically reads a document or the like in order to generate image data. The image data converted by the scanner unit 23 is provided to the control unit 21. Then, the control unit 21 generates PDF (Portable Document Format) file data as digital data from the image data. The reading means is not limited to a scanner as long as it can read and digitize a document, and may be a digital camera using a CCD.

  The IC card reader unit 24 is means for reading electronic data stored in an IC card accommodated in the card reader unit. In the present embodiment, a unique identifier for identifying the IC card is recorded on the IC card inserted into the IC card reader unit 24. The unique identifier of the IC card is given to each owner of the IC card, and the owner information of the IC card can be acquired using the unique identifier of the IC card.

  The electronic storage requirement data storage unit 25 stores electronic storage requirement data necessary for each type of document to be created. For example, the electronic storage requirement defined in the e-document law is used. This electronic storage requirement data includes data relating to color conditions, resolution, and signature type. In the color condition data area, condition data relating to the color (color or black and white) when the document is read is stored. In the resolution data area, data related to the resolution for reading a document is stored. In the signature type data area, the type of signature added to the document, that is, data relating to the object to be authenticated is stored. In the present embodiment, there are “device”, “individual”, and “time” as objects to be authenticated, and a signature selected from “device signature”, “personal signature”, and “time signature (time stamp)” is electronic. Attached to document. For example, in the present embodiment, when an invoice is digitized, three types of “device signature”, “personal signature”, and “time signature” are stored as signature types of the electronic storage requirement.

  The file data storage unit 26 is used for recording various data. In the present embodiment, it is used when the PDF file data generated by the control unit 21 is temporarily stored.

  Next, processing for creating an electronic document using the MFP 20 configured as described above will be described. Here, assuming a case where an invoice is created as an electronic document, description will be made in the order of digitization processing for creating a document and verification processing for verifying the contents and signature of the created document.

(Electronic processing)
First, the case of creating an electronic document will be described with reference to FIGS. 1 to 3 and FIG.
As shown in FIG. 2, the control unit 21 of the MFP 20 displays the normal menu processing screen 200 shown in FIG. 5 on the touch panel in the standby state. The operation panel is provided with a plurality of process menu selection buttons. Here, when creating an electronic document, the “e-document” button on this operation panel is selected. As a result, the control unit 21 detects that an instruction to digitize the document is given via the operation panel unit 22.

  Upon receiving this instruction, the control unit 21 displays the document menu selection screen 210 shown in FIG. 5 on the touch panel (step S1-1). The selection screen 210 includes a document type selection button, an electronic requirement display area 212 regarding requirements for digitizing a document specified by the document type selection button, a detailed setting button, and a destination change button. The document type selection button is a button for specifying the type of electronic document to be created, and the name of the document to be digitized is displayed on each button. The digitization requirement display area 212 includes data relating to electronic storage requirement data including color conditions, resolution, and signature type related to the e-document method, and data storage destinations. The detailed setting button is selected when the color condition, resolution, signature type, etc. are changed and reset. The destination change button is selected when the storage destination of the digitized document data is changed.

Here, when digitizing the invoice, the document type selection button of “invoice” is pressed. As a result, the control unit 21 reads out the data regarding the color condition, resolution, and signature type associated with the “invoice” from the electronic storage requirement data storage unit 25 and outputs the data to the digitization requirement display area 212 on the touch panel. To do. Then, the worker who has confirmed the color condition, resolution, and signature type of the “invoice” displayed in the digitization requirement display area 212 selects the start button on the operation panel.

  Thereby, the control unit 21 of the MFP 20 determines the signature process (step S1-2). Specifically, the control unit 21 selects a signature process associated with the signature type data set when the start button is selected. For example, in the case of digitizing a document in which “device signature”, “personal signature”, and “time signature” are set as the signature type of the electronic storage requirement data stored in the electronic storage requirement data storage unit 25 The control unit 21 selects a device signature process, a personal signature process, and a time signature process. Then, the control unit 21 performs the signature process on the selected signature process in the order of the device signature process, the personal signature process, and the time signature process, performs the reading process before the signature process, and performs the transfer process after the signature process. Set the execution order to do. Then, based on this execution order, a progress display screen 222 is displayed. As shown in FIG. 5, the progress display screen 222 displays icons of “read”, “device signature”, “personal signature”, “time signature”, and “file transfer” in this order. .

  Next, the MFP 20 performs a reading process (step S1-3). Specifically, the control unit 21 drives the scanner unit 23 using the color conditions and resolution stored in the electronic storage requirement data storage unit 25 as scanning settings. At this time, the control unit 21 displays that the “reading” process is being executed on the progress display screen 222. The scanner unit 23 scans the entire bill and optically reads the content of the bill. At this time, the scanner unit 23 performs reading according to the set resolution. The scanner unit 23 converts the image data into image data and provides the image data to the control unit 21. The control unit 21 generates PDF file data based on the image data provided from the scanner unit 23.

Next, the MFP 20 performs signature processing (step S1-4). In this signature processing, the signature process is executed for each signature process determined in step S1-2.
In this signature process, first, the control unit 21 generates a hash value from the PDF file data when starting this process. This hash value is a compressed value obtained by substituting the original data into a hash function that is a one-way function. Next, the control unit 21 generates signature data obtained by encrypting the hash value with a secret key. Further, the control unit 21 adds the generated signature data to the PDF file data. This series of processing is performed for each signature process.

  In the present embodiment, in the case of “invoice” as described above, the signature types stored in the electronic storage requirement data storage unit 25 are “device signature”, “personal signature”, and “time signature”. The signature process, the personal signature process, and the time signature process are executed in this order. Hereinafter, these three processes will be described in detail.

  First, the control unit 21 performs a device signature process. Specifically, as in the device signature process shown in FIG. 3, the control unit 21 generates a hash value from the PDF file data created in step S1-3. Then, the control unit 21 encrypts this hash value using a device secret key stored in the MFP 20 to generate signature data. Then, the control unit 21 adds the generated signature data to the PDF file data. Furthermore, device information is attached to the electronic document. During the execution of this process, the control unit 21 displays that the “device signature” process is being executed on the progress display screen 222.

Next, the control unit 21 performs a personal signature process based on the IC card associated with the individual. Specifically, the control unit 21 generates a hash value from the PDF file data to which “device signature” is attached, as in the personal signature process shown in FIG. And the control part 21 displays the message which instruct | indicates insertion of an IC card in a card reader part, and input of a PIN code on a touch panel. Thereafter, when the IC card is inserted into the card reader unit and the password is input, the password of the IC card is read and compared with the input password. If the two passwords match, the control unit 21 obtains signature data by encrypting and generating a hash value using the secret key data of the IC card stored in the IC card. Here, a hash value generated from PDF file data to which “device signature” is attached is used. Then, the control unit 21 adds the generated signature data to the PDF file data. Further, the owner information of the IC card is attached to the electronic document. During the execution of this process, the control unit 21 displays on the progress display screen 222 that the “personal signature” process is being executed.

  Then, the control unit 21 performs a time signature process. Specifically, the control unit 21 generates a hash value from the PDF file data with the “personal signature” attached, as in the time signature process shown in FIG. Next, the control unit 21 transmits a time authentication request to the time authentication server 30 via the network N. This time authentication request includes data relating to the generated hash value. In response to this request, the time authentication server 30 encrypts the received hash value using the held time certificate authority private key data and generates signature data. Then, the time signature is transmitted to the MFP 20 via the network N. At this time, the time authentication server 30 also transmits to the MFP 20 public key data for decrypting the encrypted signature data. The MFP 20 adds the received signature data to the PDF file data. Further, time information is attached to the electronic document. During the execution of this process, the control unit 21 displays on the progress display screen 222 that the “time signature” process is being executed.

  When each signature process is completed, the control unit 21 adds data relating to the type of signature attached to the file data and public key data for decrypting the signature encrypted in the signature process to the PDF file data. . In this embodiment, since the device signature, the personal signature, and the time signature are added, each public key data for decrypting the device signature, the personal signature, and the time signature is included in the PDF file data.

Then, when all the signature processes are completed, the control unit 21 of the MFP 20 performs a file transfer process (step S1-5). At this time, the control unit 21 displays that the “file transfer” process is being executed on the progress display screen 222. Specifically, the control unit 21 acquires data at a preset storage location, and transfers PDF file data with a necessary signature to the storage destination.
As described above, when the digitization processing of the document ends, the control unit 21 of the MFP 20 ends the display of the progress display screen 222 and displays that the processing is completed.

(Verification process)
Next, a case where an electronic document created by the above-described document creation process is verified will be described with reference to FIGS. In the present embodiment, the electronic document is verified using the computer terminal 10.

  First, the document browsing software is activated, and a list of titles of document files that can be browsed is displayed on the display of the computer terminal 10. Here, selection of a PDF file desired to be browsed is received from the title list (step S2-1). Then, the computer terminal 10 acquires public key data based on the signature type data added to the selected PDF file data.

Next, the computer terminal 10 performs a time signature authentication process for the selected document file (step S2-2). Specifically, the computer terminal 10 decrypts the encrypted hash value using the public key data of the time certificate authority. Then, the computer terminal 10 generates a hash value from the PDF file data with the device signature and the personal signature, compares the decrypted hash value with the generated hash value, and determines whether or not they match. (Step S2-3).

  If the two hash values match (in the case of “YES” in step S2-3), the personal signature authentication process is performed (step S2-4). Specifically, the computer terminal 10 decrypts the hash value of the encrypted personal signature using the public key data of the personal signature. Then, the computer terminal 10 generates a hash value based on the PDF file data to which the device signature is attached, compares the hash value with the decrypted hash value, and determines whether or not they match (step). S2-5).

  Here, when the hash values of the two match (in the case of “YES” in step S2-5), the computer terminal 10 performs a device signature authentication process (step S2-6). Specifically, the encrypted hash value is decrypted using the public key data of the device signature. Then, the computer terminal 10 generates a hash value based on the PDF file data, compares the hash value with the decrypted hash value, and determines whether or not they match (step S2-7).

  If the hash values match (“YES” in step S2-7), the computer terminal 10 outputs a display indicating that the signature is valid as shown in FIG. 5 (step S2). -8). Specifically, the computer terminal 10 displays a validity confirmation display 330 indicating that the document is valid on the display. The display screen 300 displays the content 320 of the document file and the signature content 310 attached to the document file.

  On the other hand, when the decrypted hash value does not match the hash value calculated from the PDF file data in each of the time signature, personal signature, and device signature authentication processes (steps S2-3, S2-5, S2-). 7 is “NO”), it is displayed on the display screen 300 that the document is invalid (step S2-9). Note that the computer terminal 10 does not perform the authentication process for the signature not added to the PDF file data, and performs the following process. Thus, the document file verification process is completed.

According to this embodiment, the following effects can be obtained.
In the present embodiment, the control unit 21 is connected to an electronic storage requirement data storage unit 25 that stores electronic storage requirement data defined by the e-document law for each type of document to be created. When the type of the document to be created is selected, the control unit 21 reads data relating to the signature type associated with the selected document, and determines the signature process (step S1-2). The control unit 21 performs a reading process for converting the document into electronic data, a selected signature process (a device signature process, a personal signature process, and a time signature process) and a transfer process. In each signature process, the control unit 21 generates a hash value from the PDF file data, generates signature data obtained by encrypting the hash value with a secret key, and adds the signature data to the PDF file data. Further, the computer terminal 10 compares the hash value obtained by decrypting the signature with the hash value used for the signature, and displays whether or not the electronic document is valid. Therefore, the control unit 21 can generate document file data with an appropriate electronic signature according to the type of document. In addition, the effectiveness of the electronic document can be grasped efficiently.

In the present embodiment, the electronic storage requirement data storage unit 25 records not only the signature type data to be added to the document but also data related to color conditions and resolution as electronic storage requirement data. When the type of document to be created is selected, the control unit 21 reads out data relating to the color condition and resolution associated with the selected document, and digitizes the document with the color condition and resolution that match these settings. . For this reason, it is possible to efficiently specify storage requirements necessary for electronically storing a document and to perform digitization satisfying these requirements.

  In this embodiment, device secret key data unique to the MFP 20 is recorded in the control unit 21. When performing the device certification process, the control unit 21 encrypts a hash value generated from the PDF file data using the device secret key data and assigns the hash value to the PDF file data. Therefore, it is possible to specify the MFP 20 that has created the document recorded on the paper in the electronic document file data. Therefore, it is possible to authenticate where the digitization has been performed.

  In the present embodiment, the control unit 21 displays on the document menu selection screen 210 an electronic requirement display area 212 relating to requirements for digitizing the document specified by the document type selection button, a detail setting button, and an address change button. To display. In the digitization requirement display area 212, data relating to electronic storage requirement data including color conditions, resolution, and signature type related to the e-document method and data storage destinations are output. For this reason, it is possible to instruct execution of a document after confirming the digitization requirements of the document to be digitized. In addition, since there are detailed setting buttons for changing and resetting color conditions, resolution, signature type, etc., an electronic document can be saved by adding a further signature to the signature specified as the digitization requirement. It is also possible to further improve the reliability. Further, since there is a destination button for changing the storage destination of the digitized document data, the storage destination can be changed as appropriate.

  In this embodiment, the control unit 21 displays a progress display screen 222 in which icons of “read”, “device signature”, “personal signature”, “time signature”, and “file transfer” are arranged in this order. . Then, using the progress display screen 222, the control unit 21 displays that the reading process, the device signature process, the personal signature process, the time signature process, and the file transfer process are being executed. Therefore, the worker can grasp the progress of the digitization process. Furthermore, even when the signatures to be assigned differ depending on the document, the process is selected according to the document, and the progress display screen 222 is generated based on the selection process. Therefore, it is possible to more accurately grasp the progress of the processing performed in the electronic processing.

  In the present embodiment, the control unit 21 encrypts the hash value using the device secret key or the IC card secret key. Further, the control unit 21 transmits the hash value to the time authentication server 30, receives the signature encrypted with the time certificate authority private key, and acquires the public key. When the signature process is completed, the control unit 21 adds public key data for decrypting the signature encrypted by the signature process to the document file data. For this reason, the computer terminal 10 can confirm whether the signature given to the PDF file is valid by using the public key included in the PDF file data.

Moreover, you may change the said embodiment as follows.
In the above embodiment, the control unit 21 adds signatures to the PDF file data in the order of device signature, personal signature, and time signature. The order of signatures is not limited to this. Usually, when a multiplexed signature is added, a signature with a long validity period is often added last.

  In the above embodiment, the control unit 21 specifies the type of document to be created by selecting the document type selection button displayed on the selection screen 210, and sets the electronic storage requirement corresponding to this document type as the electronic storage requirement. Electronic storage requirement data was obtained from the data storage unit 25. Alternatively, the document type may be specified in association with the destination where the file data is stored. For example, when a dedicated storage location for storing an invoice is selected, the document file data may be created based on the electronic storage requirement of the invoice. As a result, the document type can be selected at the same time as the storage destination.

Further, information regarding the document type may be acquired from another computer terminal 10 and the electronic storage requirement may be specified using the electronic storage requirement data storage unit 25 based on this information.
In the above embodiment, when the computer terminal 10 does not match the decrypted hash value and the hash value calculated from the PDF file data in each of the time signature, personal signature, or device signature authentication processes, The fact that the document is invalid is displayed on the display screen 300. However, the present invention is not limited to this, and it may be displayed in the signature content 310 which signature authentication process is invalid.

1 is a schematic diagram of a system in an embodiment. The flowchart for demonstrating the process sequence of the digitization process in embodiment. Explanatory drawing for demonstrating the state to which a signature is provided in embodiment. The flowchart for demonstrating the process sequence of the verification process in embodiment. The screen figure for demonstrating the screen in a touch panel in electronic processing. The screen figure for demonstrating the screen on which validity was displayed in the verification process.

Explanation of symbols

  21... Control section as control means, 23... Scanner section as reading means, 25... Electronic storage requirement data storage section as electronic storage requirement data storage means.

Claims (5)

For creating an electronic document by using a document digitizing apparatus having an electronic storage requirement data storage unit that stores data relating to an electronic storage requirement according to a document type, a reading unit, and a control unit that controls these units A document electronic method,
The control means is
An acquisition step of acquiring data relating to the electronic storage requirement of the document type from the electronic storage requirement data storage unit based on the document type of the document;
Based on the electronic storage requirements, a file data creation step of creating a document file data by reading a document using the reading means and converting it into digital data;
A signature that identifies the type of electronic signature included in the electronic storage requirement, acquires signature data generated using private key data for generating the electronic signature, and executes a signature process to be added to the document file data Processing stage; and
And a recording step for recording the document file data to which the signature data is added. If there are multiple types of electronic signatures included in the electronic storage requirement,
The control means specifies and executes each signature process according to the type of the electronic signature,
The document digitizing method according to claim 1, further comprising a progress display step of displaying a progress status of each process during the execution. The document digitizing apparatus holds data relating to a secret key unique to the document digitizing apparatus,
In the signature processing step, if the device signature used for digitization is included as the type of electronic signature included in the electronic storage requirement, signature data is created using a secret key unique to the document digitizing device The method for digitizing a document according to claim 1 or 2, characterized in that: A document digitizing apparatus for creating an electronic document, comprising electronic storage requirement data storage means for storing data relating to electronic storage requirements in accordance with a document type, reading means, and control means for controlling them. ,
The control means is
Based on the document type of the document, from the electronic storage requirement data storage unit, an acquisition unit for acquiring data relating to the electronic storage requirement of the document type;
Based on the electronic storage requirements, a file data creating means for creating a document file data by reading a document using the reading means and converting it into digital data;
A signature that identifies the type of electronic signature included in the electronic storage requirement, acquires signature data generated using private key data for generating the electronic signature, and executes a signature process to be added to the document file data Processing means;
A document digitizing apparatus comprising: a recording unit for recording the document file data to which the signature data is added. An electronic storage requirement data storage means for storing data relating to electronic storage requirements according to a document type, a reading means, and a control means for controlling these, a document digitization program for creating an electronic document ,
The control means;
An acquisition means for acquiring data relating to the electronic storage requirement of the document type from the electronic storage requirement data storage means based on the document type of the document;
Based on the electronic storage requirements, a file data creation unit that creates a document file data by reading a document using the reading unit and converting the document into digital data;
A signature that identifies the type of electronic signature included in the electronic storage requirement, acquires signature data generated using private key data for generating the electronic signature, and executes a signature process to be added to the document file data A document digitizing program which functions as a processing unit and a recording unit for recording the document file data to which the signature data is added.

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