JP2006279151A - Document processing apparatus, document processing program, and document processing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a document processing apparatus, a document processing program, and a document processing method for sufficiently securing the security of document data even in the case of backing up and restoring the document data. <P>SOLUTION: The document processing apparatus 10 is configured to include: a document data storage means 11 for storing the document data; a document data transfer means 12 for transferring the document data in the document data storage means 11 and unique identifier information of its own apparatus to a client apparatus 20 and making a backup means 21 of the client apparatus 20 store them; an identifier discrimination means 14 for discriminating whether or not received unique identifier information is coincident with the unique identifier information of its own apparatus upon the receipt of the document data and the unique identifier information from the client apparatus 20; and a document data reregistration means 13 for applying reregistration processing of the document data received from the client apparatus 20 to the document data storage means 11 when a discrimination result indicates coincidence. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a document processing apparatus, a document processing program, and a document processing method that handle electronic document data.

  In recent years, electronic document data that can be processed on a computer has been widely used in order to realize a paperless document. As one of document processing apparatuses that handle the document data, a scan function, a print function, and the like. There is known a multi-function machine that integrates a FAX function, a network communication function, a file server function, and the like. In a multi-function peripheral, for example, document data read by a scan function from an original document is stored and accumulated using a file server function, and desired document data is selectively extracted from the stored and accumulated data. Further, it is possible to realize a usage form in which this is output by a print function, a FAX function, or a network communication function (for example, see Patent Document 1).

  However, the file server function as described above is generally realized by a large-capacity storage device such as a hard disk, but the storage capacity has an upper limit even if the capacity is large. Therefore, the document data stored and accumulated by the file server function is transferred from the document processing apparatus to the client apparatus if the client apparatus such as a host computer is connected to the document processing apparatus via the network. Storage has been proposed (see, for example, Patent Document 2). That is, so-called backup of document data is performed on the client device side. When processing the document data, so-called restoration is performed in which the backed-up document data is re-registered in the file server function (in the large-capacity storage device) in the document processing apparatus. As a result, it is possible to deal with a large amount of document data search processing, print processing, and the like while effectively utilizing the limited storage capacity. Further, for example, even when a failure occurs in the file server function, there is an advantage that it can be easily restored.

JP-A-11-45031 Japanese Patent Laid-Open No. 5-158653

  By the way, when document data is stored and accumulated using the file server function, there may be some document data that is not desired to be disclosed to an unrelated third party, such as a confidential document. It is very important to ensure the security of such document data so that the contents are not falsified during the backup and restore process.

  Therefore, the present invention provides a document processing apparatus, a document processing program, and a document processing method capable of sufficiently securing the document data even when the document data is backed up and restored. Objective.

  The present invention is a document processing apparatus devised to achieve the above object, a document data storage means for storing and storing document data, and transferring document data in the document data storage means to a network-connected client apparatus. At the same time, the unique identifier information about the own device uniquely determined in the network is transferred along with the document data, and the document data and the unique identifier information are stored and held in the backup unit of the client device. An identifier for determining whether or not the received unique identifier information matches the unique identifier information of the own device when receiving the document data and the unique identifier information in the backup means from the client device Judgment means and unique identifier received from the client device Document data re-registration means for performing re-registration processing in the document data storage means of the document data received together with the matched unique identifier information when the information matches the unique identifier information about the own device. To do.

  Further, the present invention provides a document processing program devised to achieve the above object, wherein a computer, a document data storage means for storing and storing document data, and a document data in the document data storage means are connected to a network. And the unique identifier information about the own device uniquely defined in the network is transferred along with the document data, and the document data and the unique information are stored in the backup unit of the client device. When document data transfer means for storing and holding identifier information and document data and unique identifier information in the backup means are received from the client device, whether or not the received unique identifier information matches the unique identifier information for the own device Identifier determining means for determining whether or not the client When the unique identifier information received from the device matches the unique identifier information for the own device, the document data re-registration means performs re-registration processing in the document data storage means of the document data received together with the matched unique identifier information. It is characterized by functioning.

  Further, the present invention is a document processing method devised to achieve the above object, and is a document processing method used in a document processing apparatus provided with document data storage means for storing and storing document data, Transferring document data in the document data storage means to a client device connected to the document processing device over a network and unique identifier information about the document processing device uniquely determined in the network accompanying the document data A document data transfer step for storing and holding the document data and the unique identifier information in the backup means of the client device, and receiving the document data and unique identifier information in the backup means from the client device, The received unique identifier information is a unique identifier for the document processing apparatus. An identifier determination step for determining whether or not it matches the child information; and when the unique identifier information received from the client device matches the unique identifier information for the own device, the document data received together with the matched unique identifier information And a document data re-registration step for performing re-registration processing in the document data storage means.

  According to the document processing device, the document processing program, and the document processing method having the above procedure, when the document data is transferred to the client device and stored in the backup unit in the client device, that is, the document data is backed up. When performing, the unique identifier information about the own apparatus which is the storage and storage source of the document data is attached to the document data. When the document data is received from the client device and the re-registration process in the document data storage means is performed, that is, when the document data is restored, the unique identifier information attached to the received document data is It is determined whether or not the unique identifier information matches, and if it matches, the re-registration process is performed. That is, the unique identifier information about the document processing apparatus that is the storage and storage source of the document data is used as an authentication key when the document data is backed up and restored. Therefore, if the authentication keys do not match, for example, even if the contents of the document data are falsified at the time of backup, the document data after the falsification will not be restored as it is, and this ensures sufficient security for the document data. You can get it.

  As described above, according to the document processing apparatus, document processing program, and document processing method of the present invention, it is possible to effectively use the storage capacity as the document data storage means by performing backup and restore of the document data, and in large quantities. It is also possible to cope with document data search processing, print processing, and the like. In addition, even when the document data is backed up and restored, the unique identifier information about the document processing apparatus is used as an authentication key when performing the backup and restore, so that the security of the document data can be sufficiently secured. . In addition, since the unique identifier information is only used as an authentication key, no complicated operation by the user (for example, an operation such as login or password input) is required to secure the security, and convenience for the user is also achieved. It will be able to secure enough.

  A document processing apparatus, a document processing program, and a document processing method according to the present invention will be described below with reference to the drawings.

First, a system configuration including a document processing apparatus according to the present invention will be described.
FIG. 1 is an explanatory diagram showing a specific example of a system configuration to which the present invention is applied. As shown in the figure, the system described here is configured such that the document processing apparatus 10 and the client apparatus 20 are connected to a network via a communication line 30. A plurality of document processing apparatuses 10 and client apparatuses 20 may exist on the communication line 30.

  The document processing apparatus 10 has a processing function for document data and a function for storing and storing the document data. Specifically, for example, there is a multifunction device that integrates a scan function, a copy function, a print function, a FAX function, a network communication function, a post-processing function, a file server function, and the like. The document processing apparatus 10 is assigned a unique identifier uniquely determined in the network, and information related to the unique identifier is registered and stored in a dedicated storage area as unique identifier information about the own apparatus. It shall be. For example, an ID number or an IP address may be used as the unique identifier.

  The client device 20 functions as a host computer for the document processing device 10, and is configured to be able to back up and restore document data with the document processing device 10. For this purpose, the client device 20 has backup means 21 composed of a mass storage device such as a hard disk.

  As long as the communication line 30 realizes a network connection between the document processing apparatus 10 and the client apparatus 20, a wide area network such as the Internet may be used regardless of whether it is a wireless or wired connection or a local area network. May be included.

Next, the functional configuration of the document processing apparatus 10 in the above system will be described. FIG. 2 is an explanatory diagram showing an example of a functional configuration of the document processing apparatus according to the present invention.
As shown in the figure, the document processing apparatus 10 includes a document data storage unit 11, a document data transfer unit 12, a document data re-registration unit 13, an identifier determination unit 14, an encryption unit 15, and a decryption unit 16. A re-registration authentication means 17, a document data output means 18, and an output authentication means 19.

The document data storage means 11 is for giving a file server function to the document processing apparatus 10 and for storing and storing document data using a large-capacity storage device such as a hard disk.
The document data is data for specifying the document, and includes attribute information for specifying the attribute of the image data in addition to the image data for specifying the image content of the document. The attribute information includes document name information, page number information, administrator information, and the like of document data. Further, the attribute information includes information for specifying the processing content for the image data. Specifically, the instruction information for outputting each page (for example, monochrome / color instruction, duplex / single-side instruction) corresponds to this.
In the document data storage unit 11, it is conceivable that the document data is classified and stored in a plurality of folders. A folder corresponds to a directory in a hierarchical directory, and each folder can store a plurality of document data. More specifically, there is one that classifies and stores document data according to the contents of attribute information, such as what is called “confidential box” that stores document data for each administrator.

  The document data transfer unit 12 transfers the document data in the document data storage unit 11 to the client device 20 connected to the network in units of folders, for example, and stores and holds the document data in the backup unit 21 of the client device 20. belongs to. In other words, the document data transfer unit 12 is for causing the client device 20 to back up the document data in the document data storage unit 11. However, the document data transfer means 12 also transfers the unique identifier information about the own apparatus to the client apparatus 20 along with the document data, and the unique identifier information is also stored in the backup means 21 together with the document data. It is supposed to let you. The document data transfer unit 12 transfers document data and unique identifier information in response to a request from the client device 20 or an instruction from a user interface (not shown) provided in the document processing device 10. Further, when there are a plurality of client devices 20 on the communication line 30, it is assumed that the client device 20 as a transfer destination is specified and registered in advance by address information (for example, an IP address) or the like.

  When the document data re-registration unit 13 receives the document data transferred in units of folders from the backup unit 21 of the client device 20, the document data re-registration unit 13 performs re-registration processing of the document data in the document data storage unit 11. That is, the document data re-registration means 13 is for restoring the document data backed up by the client device 20. However, the document data re-registration unit 13 performs re-registration processing for the received document data while following the determination result of the identifier determination unit, as will be described in detail later. This re-registration process is also performed in response to a request from the client apparatus 20 or an instruction from the user interface of the document processing apparatus 10.

  When the identifier determination unit 14 receives the document data and the unique identifier information in the backup unit 21 from the client device 20, the identifier determination unit 14 compares the received unique identifier information with the unique identifier information for the own device and determines whether or not they match. And the determination result is notified to the document data re-registration means 13. If the unique identifier information received from the client device 20 does not match the unique identifier information for the own device, the identifier determining unit 14 adds new unique identifier information on the user interface of the client device 20 or the document processing device 10. An input is requested, and it is determined whether or not the input unique identifier information matches the unique identifier information of the own device.

  The encryption unit 15 encrypts the document data that the document data transfer unit 12 transfers to the client device 20. The encryption may be performed using an encryption key based on the unique identifier information about the device itself, but is not necessarily limited to this. Further, the encryption process itself may be performed using a known technique, and thus the description thereof is omitted here.

  The decrypting means 16 is provided corresponding to the encrypting means 15 and decrypts the document data received from the client device 20. Since the decoding process itself by the decoding unit 16 may be performed using a known technique, the description thereof is omitted here.

  When the document data received from the client device 20 is encrypted, the re-registration authentication unit 17 requests and inputs information related to the encryption key on the user interface of the client device 20 or the document processing device 10. If the received information matches the encryption key used by the encryption means 15, the received document data is decrypted by the decryption means 16 and re-registered by the document data re-registration means 13. .

  The document data output unit 18 outputs the document data in the document data storage unit 11 for visualization. Specifically, print output using the print function, FAX transmission using the FAX function, display output to the user interface, and the like are performed.

  When outputting the document data by the document data output unit 18, the output time authentication unit 19 requests input of unique identifier information at the output request source (user interface of the client device 20 or the document processing device 10), and inputs it. If the received unique identifier information matches the unique identifier information accompanying the document data output by the document data output means 18, the document data output means 18 outputs the document data, and the input unique identifier information is If they do not match, the preset authentication failure image data is added to the document data to be output and output to the document data output means 18.

  Each of these means 11 to 19 is realized by an operation program installed in the document processing apparatus 10 operating hardware resources of the document processing apparatus 10. However, the operation program is not installed in advance but may be provided by being stored in a computer-readable storage medium or distributed via a wired or wireless communication means. May be. That is, the functional configuration of the document processing apparatus 10 described above can also be realized by a document processing program that causes a computer to function as a document processing apparatus.

  Next, an example of processing operation in a system configuration including the document processing apparatus 10 configured as described above, that is, an example of a procedure of the document processing apparatus according to the present invention will be described.

[Storing and storing document data]
In the document processing apparatus 10, when image data is input by a scan function, a FAX function, a network communication function, etc. realized by the document processing apparatus 10, and storage and storage of the image data is instructed from the user interface, The attribute information of the image data is extracted from the information at the time of input, the instruction content, etc., and the image data and the attribute information are stored and stored in the document data storage means 11 as document data. At this time, in the document data storage means 11, the image data is stored as an image data file, and the attribute information is stored as an attribute / instruction file, which constitutes the document data. Further, the document data is classified into one of the confidential boxes that are folders existing in the document data storage unit 11 and stored in the confidential box. A plurality of document data may be stored in one confidential box.

[Back up document data]
Thereafter, when either the document processing apparatus 10 or the client apparatus 20 receives a data backup instruction input from the user interface, the document processing apparatus 10 and the client apparatus 20 store the document data stored in the confidential box related to the instruction input. Start backup of.

  FIG. 3 is a flowchart illustrating an exemplary procedure of a processing operation example during backup. As shown in the figure, in the document processing apparatus 10, at the time of backup, first, the document data transfer means 14 takes out the document data related to the instruction input, that is, the document data to be backed up from the document data storage means 11 (step 101). The following steps are abbreviated as “S”). When the document data transfer means 14 takes out the document data, the encryption means 15 next determines whether or not the document data is to be encrypted (S102). This determination may be made according to whether or not an encryption instruction is input together with a data backup instruction input in the document processing apparatus 10 or the client apparatus 20.

  As a result, when it is determined that the data is to be encrypted, the encryption unit 15 issues an encryption key (S103), and encrypts the document data extracted from the document data storage unit 11 (S104). The encryption key issued at this time corresponds to a public key in the public key method, and may be generated based on, for example, unique identifier information about the own device.

  Thereafter, the document data transfer means 12 combines the document data (if encrypted, the encrypted data) and the unique identifier information about the own device, and if the document data is encrypted, the encryption key is also added to the network. The data is transferred to the connected client device 20 (S105). This transfer may be performed using a network communication function. In the client device 20, when document data is transferred from the document processing device 10, the document data is received and stored in the backup unit 21. As a result, the document data in the document data storage unit 11 of the document processing apparatus 10 is encrypted together with the unique identifier information about the document processing apparatus 10 as necessary, and backed up in the backup unit 21 of the client apparatus 20. Will be.

[Restore document data]
When restoring the document data backed up by the procedure as described above, the document processing apparatus 10 and the client apparatus 20 perform the following processing operations. FIG. 4 is a flowchart illustrating an example of a processing operation at the time of restoration.

  When either the document processing apparatus 10 or the client apparatus 20 receives a data restore instruction input from the user interface, the client apparatus 20 stores the document data related to the instruction input, that is, the document data to be restored, as the document. Along with the unique identifier information backed up along with the data, it is taken out from the backup means 21 and transferred to the document processing apparatus 10.

  When the document data and the unique identifier information are received from the client device 20 (S201), in the document processing device 10, the identifier determination unit 14 compares the received unique identifier information with the unique identifier information for the own device, It is determined whether or not they match each other (S202).

  If the determination results match, the document data backed up from the own apparatus to the client apparatus 20 is restored. Therefore, in the document processing apparatus 10, the document data re-registration means 13 continues to restore the client apparatus 20. Whether the document data is encrypted or not (S203). If the document data is not encrypted, the document data re-registration means 13 stores the document data received from the client device 20 in the document data storage means 11 as it is. (S204). As a result, the document data is re-registered and restored in the document data storage means 11 as before the backup.

  However, when the document data received from the client device 20 is encrypted, the re-registration authentication unit 17 requests input of information regarding the encryption key on the user interface of the client device 20 or the document processing device 10. In step S205, it is determined whether the input information matches the encryption key used by the encryption unit 15, that is, whether the encryption key related to the input information is correct. (S206). At this time, the information regarding the encryption key input from the user interface includes, for example, unique identifier information of the document processing apparatus 10 that is the basis of the encryption key. For the encryption key that can be specified from the input information, the encryption key transferred to the client device 20 together with the document data when the document data is backed up is received from the client device 20 for comparison. It may be determined whether or not it is correct.

  As a result, if the encryption key relating to the input information is correct, the re-registration authentication unit 17 causes the decryption unit 16 to decrypt the document data received from the client device 20 (S207). . Then, the document data re-registration unit 13 stores and stores the decrypted document data in the document data storage unit 11 (S204). As a result, the document data is re-registered and restored in the document data storage means 11 as before the backup.

  On the other hand, if the encryption key is not correct, the re-registration authentication means 17 does not permit the decryption by the decryption means 16 and the re-registration process of the document data by the document data re-registration means 13, and the client device 20 or the document Information indicating that document data cannot be restored is displayed and output on the user interface of the processing apparatus 10, and the user is notified of this (S208).

  If the unique identifier information received from the client device 20 and the unique identifier information about the own device do not match (S202), the backup source document processing device 10 and the restore destination document processing device 10 are connected. Therefore, in the document processing apparatus 10 serving as the restore destination, the identifier determination unit 14 requests a new input of unique identifier information on the user interface of the client apparatus 20 or the document processing apparatus 10 (S209). . When the unique identifier information is input in response to the request, the identifier determination unit 14 determines whether or not the input unique identifier information matches the unique identifier information for the own device (S210).

  If the determination results match, the unique identifier information of the restore destination is clearly specified even if the backup source and the restore destination are different. Therefore, in the document processing apparatus 10 that is the restore destination, the access is made. It is determined that the request is a legitimate restore request from the authorized user, and the document data in the document data storage unit 11 is re-registered in the same procedure as described above (S203 to S207). However, at this time, the document data re-registration unit 13 also stores and accumulates the unique identifier information received from the client device 20 in the document data storage unit 11 along with the document data. If the determination results do not match, the document data re-registration means 13 cannot restore the document data to the user interface of the client device 20 or the document processing device 10 without permitting the re-registration processing of the document data. Information is displayed and output, and a notification to that effect is sent to the user (S208).

[Output document data]
When the document data restored in the above procedure is output using the print function, FAX function, or the like, the document processing apparatus 10 performs the processing operation described below. FIG. 5 is a flowchart showing an example of processing operation when outputting document data.

  When an output job for document data stored and stored in the document data storage unit 11 is received, the document processing apparatus 10 outputs the document data at the document data output unit 18 and the output time authentication unit 19 The unique identifier information stored and accumulated in the document data storage means 11 accompanying the document data, that is, the unique identifier information stored in the document data storage means 11 is compared with the unique identifier information about the own device. It is determined whether or not they match each other (S301). If the determination results match, the document data backed up and restored between the self apparatus and the client apparatus 20 is output by the self apparatus, so that the document data output means 18 outputs the output job. The document data according to the above is taken out from the document data storage means 11 and outputted as a normal image as it is (S302).

  However, if the determination results do not match, in the document processing apparatus 10, the output time authentication means 19 inputs unique identifier information to the job request source (client apparatus 20 or user interface of the document processing apparatus 10). Is requested (S303). Then, the output time authenticating unit 19 stores the input unique identifier information in the document data storage unit 11 along with the unique identifier information associated with the document data to be output by the document data output unit 18, that is, the document data. It is determined whether or not it matches the stored unique identifier information (S304). If the determination results match, the document data is restored to a restore destination different from the backup source, but the unique identifier information of the backup source is clearly specified. The document data output means 18 takes out the document data related to the output job from the document data storage means 11 and outputs it as a normal image as it is (S302).

  On the other hand, if the input unique identifier information does not match the stored unique identifier information, the unique identifier information of the backup source is not clearly specified. Therefore, in the document processing apparatus 10, the output time authentication means 19 is set in advance. The authentication failure image data thus added is added to the document data to be output and combined (S305), and the combined image is output to the document data output means 18 (S306). Examples of the authentication failure image data include data for outputting a character or graphic indicating that the authentication has not been correctly performed, data for outputting the unique identifier information of the backup source, and the like.

As described above, according to the document processing apparatus 10 described in the present embodiment, the document processing program used in the document processing apparatus 10, and the document processing method executed by the document processing apparatus 10, backup and restore of document data are performed. By doing so, it is possible to realize the effective use of the storage capacity as the document data storage means 11 and to cope with a large amount of document data search processing, print processing, and the like.
In addition, when backing up and restoring the document data, when the document data is backed up, the unique identifier information about the own device that is the storage and storage source of the document data is attached to the document data, and the document data is restored. In this case, it is determined whether or not the unique identifier information attached to the received document data matches the unique identifier information of the own apparatus. If they match, the re-registration process is performed. That is, the unique identifier information about the document processing apparatus 10 that is the storage and storage source of the document data is used as an authentication key when backing up and restoring the document data. Therefore, if the authentication keys do not match, for example, even if the contents of the document data are falsified at the time of backup, the document data after the falsification will not be restored as it is, thereby ensuring sufficient security for the document data. It will be possible. In addition, since the unique identifier information is only used as an authentication key, no complicated operation by the user (for example, an operation such as login or password input) is required to secure the security, and convenience for the user is also achieved. It will be able to secure enough.

  Further, according to the document processing apparatus 10, the document processing program, and the document processing method in the present embodiment, even if the unique identifier information accompanying the received document data does not match the unique identifier information about the own apparatus, When a new input of the identifier information is requested and the input unique identifier information matches the unique identifier information of the own apparatus, the re-registration process for the received document data is performed. Accordingly, when backing up and restoring document data, it is possible to make the backup source and restore destination different while ensuring sufficient security for the document data, so that the flexibility of backup and restore can be improved. As a result, the convenience for the user is increased.

  In the document processing apparatus 10, the document processing program, and the document processing method in the present embodiment, the document data to be backed up and restored is encrypted and decrypted as necessary, and further encrypted. If this is the case, authentication using an encryption key can be performed at the time of restoration, and this also makes it possible to ensure high security for document data.

  In the document processing apparatus 10, the document processing program, and the document processing method according to the present embodiment, authentication using unique identifier information can be performed when document data is output, and authentication failure image data is added as necessary. Thus, the document data is output, so that the security at the time of outputting the document data can be secured sufficiently high. Furthermore, by adding an authentication failure image, it is possible to confirm which document processing apparatus 10 stores the document data, and as a result, convenience for the user is enhanced.

  In the present embodiment, the preferred specific examples of the present invention have been described. However, the present invention is not limited to the contents, and can be appropriately changed without departing from the gist thereof. For example, in the present embodiment, the case where the document processing apparatus 10 is a multifunction peripheral is taken as an example. However, if the document processing apparatus 10 has a function as a file server for storing and storing document data, a digital copying machine or the like The present invention can be applied in exactly the same manner.

It is explanatory drawing which shows a specific example of the system configuration to which this invention is applied. It is explanatory drawing which shows an example of a function structure of the document processing apparatus which concerns on this invention. It is a flowchart which shows an example of the procedure of the processing operation example at the time of backup in the document processing apparatus which concerns on this invention. It is a flowchart which shows the processing operation example at the time of a restore in the document processing apparatus which concerns on this invention. It is a flowchart which shows the processing operation example at the time of the document data output in the document processing apparatus which concerns on this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Document processing apparatus, 11 ... Document data storage means, 12 ... Document data transfer means, 13 ... Document data re-registration means, 14 ... Identifier determination means, 15 ... Encryption means, 16 ... Decryption means, 17 ... Re-registration Time authentication means, 18 ... document data output means, 19 ... output time authentication means, 20 ... client device, 21 ... backup means, 30 ... communication line

Claims (8)

Document data storage means for storing and storing document data;
The document data in the document data storage means is transferred to a network-connected client device, and unique identifier information about the own device uniquely determined in the network is transferred along with the document data, and the client Document data transfer means for storing and holding the document data and the unique identifier information in the backup means of the apparatus;
Receiving the document data and unique identifier information in the backup means from the client device, an identifier determining means for determining whether or not the received unique identifier information matches the unique identifier information for the own device;
When the unique identifier information received from the client device matches the unique identifier information about the own device, the document data re-registration process for re-registering the document data received together with the matched unique identifier information in the document data storage means And a document processing apparatus. If the unique identifier information received from the client device does not match the unique identifier information for the own device, the identifier determining means requests a new input of unique identifier information, and the inputted unique identifier information is the self-identifier information. Whether to match the unique identifier information about the device,
The document data re-registration unit re-registers the document data received from the client device in the document data storage unit even when the input unique identifier information matches the unique identifier information of the own device. The document processing apparatus according to claim 1, wherein the document processing apparatus performs processing. Encryption means for encrypting document data transferred by the document data transfer means to the client device;
The document processing apparatus according to claim 1, further comprising: a decrypting unit that decrypts the document data received from the client apparatus. When the encryption means performs encryption using an encryption key based on the unique identifier information about the own device, information about the encryption key if the document data received from the client device is encrypted If the input information matches the encryption key used by the encryption means, the received document data is decrypted by the decryption means and re-registered by the document data re-registration means. 4. The document processing apparatus according to claim 3, further comprising re-registration authentication means for performing registration processing. Document data output means for outputting the document data in the document data storage means for visualization, and
Requesting input of unique identifier information when outputting document data in the document data output means, and if the input unique identifier information matches the unique identifier information accompanying the document data, the output of the document data is 5. The document processing apparatus according to claim 1, further comprising: an output-time authentication unit that causes the document data output unit to perform. If the input unique identifier information does not match, the output-time authentication unit adds preset authentication failure image data to the document data to be output and causes the document data output unit to output it. The document processing apparatus according to claim 5. Computer
Document data storage means for storing and storing document data;
The document data in the document data storage means is transferred to a network-connected client device, and unique identifier information about the own device uniquely determined in the network is transferred along with the document data, and the client Document data transfer means for storing and holding the document data and the unique identifier information in the backup means of the apparatus;
Receiving the document data and unique identifier information in the backup means from the client device, an identifier determining means for determining whether or not the received unique identifier information matches the unique identifier information for the own device;
When the unique identifier information received from the client device matches the unique identifier information about the own device, the document data re-registration process for re-registering the document data received together with the matched unique identifier information in the document data storage means A document processing program that functions as a means. A document processing method used in a document processing apparatus provided with document data storage means for storing and storing document data,
The document data in the document data storage means is transferred to a client device connected to the document processing device over a network, and a unique identifier for the document processing device uniquely determined in the network accompanying the document data A document data transfer step of transferring information, and storing and holding the document data and the unique identifier information in the backup means of the client device;
An identifier determination step for determining whether or not the received unique identifier information matches the unique identifier information for the document processing device upon receiving document data and unique identifier information in the backup means from the client device;
When the unique identifier information received from the client device matches the unique identifier information about the own device, the document data re-registration process for re-registering the document data received together with the matched unique identifier information in the document data storage means A document processing method comprising: steps.

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