CN101188649A - Communication apparatus and control method thereof - Google Patents
Communication apparatus and control method thereof Download PDFInfo
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- CN101188649A CN101188649A CNA2007101873202A CN200710187320A CN101188649A CN 101188649 A CN101188649 A CN 101188649A CN A2007101873202 A CNA2007101873202 A CN A2007101873202A CN 200710187320 A CN200710187320 A CN 200710187320A CN 101188649 A CN101188649 A CN 101188649A
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- electronic signature
- digital certificates
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F15/00—Digital computers in general; Data processing equipment in general
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
Abstract
If electronic certificate data containing a private key and public key to be used to add an electronic signature to data with timer transmission setting is deleted, no electronic signature can be added at the set timer transmission time. To accomplish this, when timer transmission and electronic signature addition using stored key information and electronic certificate are set for transmission target data (YES in S 38 ), deletion of the stored key information and electronic certificate to be used for generating an electronic signature is restricted (S 40 ).
Description
Technical field
The present invention relates to a kind of communication equipment and control method thereof, relate in particular to a kind of technology that is used for sending transmission object data with electronic signature (electronic signature).
Background technology
For the fail safe of protection information in data communication, communication data is encrypted.Especially, widely-used in recent years public-key infrastructure (Public KeyInfrastructure, encryption technology PKI) of being called as.PKI is based on common key cryptosystems such as rsa encryption or digital signature and uses by being called as certificate granting center (certificateauthority, the authentication techniques of the digital certificates that certification authority issued CA).By using digital certificates to carry out the authentication of the server and client side by network and the exchange of data encryption key.In addition, carry out the data encryption communication of using the key that is exchanged, thereby guarantee safe network service.
The SSL of normally used coded communication agreement (SecureSocket Layer in as WWW, SSL)/TLS (Transport Layer Security, Transport Layer Security) in, before the beginning coded communication, uses the server and client side's of digital signature authentication.
Not only carry out the communication equipments such as PC of above-mentioned communication, and the MFP that uses in recent years (multi-function peripheral) also has the function (Japanese kokai publication hei 11-134263 communique) that sends the electronic data of the document that is read by scanner by Email in office.In this class MFP,, will convert data formats such as PDF to by the document data that scanner reads in order to ensure the transmission of high security.MFP also has and will add to the data after the conversion based on the electronic signature of PKI and send the function electronic document sending function of electronic signature (below be referred to as to add) of these data.Utilize this function, MFP be kept in advance signing electronically the MFP that creates or user private key (priyate key) and comprise the digital certificates of PKI, and electronic signature is added to electronic data by this private key of use and digital certificates.This has illustrated which user has created electronic data by using which device (MFP).Like this can assurance device and user's authenticity, and the change of detected electrons data.The fail safe that therefore, can keep electronic data.
Figure 19 is the figure that is used for the mechanism of simple declaration conventional digital signature.
Transmitter side MFP 1901 converts document data 1902 to PDF data 1903.Use is calculated summary (digest) 1904 based on the hash function of PDF data 1903.Encrypt by 1905 pairs of summaries of use transmitter side private key 1904, thereby create digital signature 1906.The PDF data 1903 and the digital signature 1906 that are generated by combination generate transmission data 1907, and these data 1907 are sent to receiver side MFP 1911.Receiver side MFP1911 calculates summary 1913 by using the hash function identical with the hash function of transmitter side according to the PDF data division that receives data 1912.The digital signature that will receive data 1912 by the PKI 1914 that uses the sender who obtains in advance is decrypted into summary 1915.Receiver side MFP will make a summary 1913 and summary 1915 compare, thereby detect the change that receives data 1912.
At present, the data format of normally used digital certificates is based on standard x .509 in the above-mentioned functions, that is, by the standard criterion of the digital certificate of ITU (International Telecommunications Union, International Telecommunications Union) definition.X.509 the digital certificates of form comprise the due date of sequence number, the public key information of X.509 version number, digital certificates, the identifying information of issuing the certificate granting center of these digital certificates, these digital certificates, the identifying information and the extended area of main body (digital certificates are issued the destination) to be certified.
In order to make CA issue digital certificates, the main body that digital certificates are issued the destination sends the data of the certificate authority request form that is called as CSR (Certificate Signing Request, certificate signature request) to CA.CA issues certificate based on the content of describing among the CSR.As the form of CSR, use standard P KC#10 (the RFC2986 internet is certificate request message format 1.7 versions X.509).CSR generally includes by digital certificates and issues the public key information that the destination keeps and the information of main body to be certified (digital certificates are issued the destination).Even when CA when printing device is issued digital certificates, printing device also will generate the CSR of the identifying information that comprises the PKI that kept by printing device and printing device, and request CA issues certificate.
This class MFP has the timed sending function (timer transmissionfunction) as one of function that sends the electronic document that is read by scanner by for example Email.Utilize this timed sending function, MFP will temporarily be remained in the memory cell by the document data that its scanner scanned, rather than sends the document data immediately after scanning.The user specifies the transmitting time and the destination of the document data kept, thereby makes document data is at the appointed time sent to named place of destination.In this fixed time, MFP converts institute's stored document data to transmission file formats such as PDF, and sends it to named place of destination.
If realize timed sending function by the document data sending function that has added electronic signature, then following problem can occur.
In order to add electronic signature to document data, MFP or user's private key and the digital certificates that comprise with the paired PKI of this private key are essential.Therefore, the MFP private key and the digital certificates that must be kept in advance signing electronically and create.Usually, the user interfaces such as guidance panel of using MFP start key to or the operations such as generation, registration, demonstration and deletion of digital certificates in, management private key and digital certificates.Yet, when being provided with timed sending, may deleting electronic signature on the contrary with sender's intention and add required private key and digital certificates by the document data sending function that has added electronic signature.In this case, when the timed sending date of appointment arrives, owing to deleted required private key and digital certificates, thereby may not add electronic signature to document data.In order to prevent this situation, when before deleting required private key and digital certificates, being provided with timed sending, document data can be converted to the transmission file format, and can sign electronically, and this electronic signature is added to this transmission file based on the document creation after the conversion.Yet, in this case, before the transmitting time corresponding, need to keep multiple file format, thereby consumed the unnecessary memory area territory with the object document data.
The digital certificates that are used to sign electronically have due date, can guarantee the validity of digital certificates before this due date.Because this reason, do not have validity by the electronic signature itself of using the digital certificates that also do not begin effective time or overdue digital certificates to create.If the scheduled date/time beyond the effective time of digital certificates has sent the document data with electronic signature by timed sending function, then the document data are sent out with invalid electronic signature.
Summary of the invention
The present invention can realize a kind of when at the appointed time sending the data with electronic signature, sends the communication equipment of the data with suitable electronic signature in this fixed time.
One aspect of the present invention provides a kind of communication equipment, and described communication equipment has the function that at the appointed time sends data, comprising: memory cell is used for storage and generates the employed generation information of electronic signature; The signature generation unit is used for by using described generation information to generate described electronic signature; Delete cells is used to delete described generation information; Send the reservation unit, be used to preengage transmission data with the described electronic signature that generates by described signature generation unit; And limiting unit, when being used for the transmission when the data of having preengage the electronic signature that generates having by described transmission reservation unit, the generation information of the electronic signature that limit deleting adds institute's reservation data.
Another aspect of the present invention provides a kind of communication equipment, and described communication equipment has the function that at the appointed time sends data, comprising: memory cell is used for storage and generates the employed generation information of electronic signature; The signature generation unit is used for by using described generation information to generate electronic signature; Send the reservation unit, be used for reservation and send, at the appointed time to send data with the described electronic signature that generates by described signature generation unit; Judging unit is used to judge that the described fixed time is whether in the effective time of described generation information; And notification unit, being used in described judgment unit judges is to warn to user notification not in described effective time the time the described fixed time.
The control method that a kind of communication equipment is provided on the one hand again of the present invention, described communication equipment has the function that at the appointed time sends data, described control method comprises: be stored in the memory and generation information that be used to generate electronic signature by use, generate electronic signature; Delete described generation information; The transmission of the data of the electronic signature that reservation generates having; And when the transmission of the data of having preengage the electronic signature that generates having, the generation information of the electronic signature that limit deleting adds institute's reservation data.
Another aspect of the present invention provides a kind of control method of communication equipment, described communication equipment has the function that at the appointed time sends data, described control method comprises: be stored in the memory and generation information that be used to generate electronic signature by use, generate electronic signature; Reservation sends, and has the data of the electronic signature that is generated at the appointed time to send; Judge that the described fixed time is whether in the effective time of described generation information; And, warn to user notification when being judged as the described fixed time not in described effective time the time.
By below with reference to the explanation of accompanying drawing to exemplary embodiments, further feature of the present invention will be apparent.
Description of drawings
Fig. 1 is the figure that illustrates according to the configuration of the network system of the embodiment of the invention;
Fig. 2 is the block diagram that the hardware configuration of the printing device (MFP) according to this embodiment is shown;
Fig. 3 is the block diagram that illustrates according to the hardware configuration of the server apparatus of this embodiment or client device;
Fig. 4 illustrates the figure of formation according to the configuration of the guidance panel of the UI of the MFP of this embodiment;
Fig. 5 A～B is the flow chart that is used to illustrate according to the operation of the electronic document sending function that has added electronic signature of the MFP of first embodiment of the invention;
Fig. 6 illustrates the figure that is used to be provided with according to the user interface windows example of the electronic document sending function that has added electronic signature of the MFP of this embodiment;
Fig. 7 illustrates with the content of tabulation explicit address book and selects the figure of the state of address 701;
Fig. 8 is the figure that the state of selecting document (AAA) 801 from the tabulation of shown document title is shown;
Fig. 9 illustrates to be through with the destination and to send the appointment of object document and the figure of the example of the input wait window demonstration that theme is imported;
Figure 10 is the figure that is illustrated in the demonstration example of the digital certificates details window when pressing certificate detail the Show Button;
Figure 11 is the figure of demonstration example that the state of selection will be used to sign electronically from the tabulation of shown key and certificate information key and certificate information is shown;
Figure 12 is the figure that the window example that is used to be provided with timed sending is shown;
Figure 13 is used for illustrating private key, the PKI that deleted representation is used to sign electronically at the MFP according to first embodiment and the operation of key/certificate information of the digital certificates that comprise PKI and the flow chart of action;
Figure 14 is the figure that the state that shows a plurality of key/certificate informations and selection information 1401 is shown;
Figure 15 A～B is used to illustrate according to the operation of the electronic document sending function that has added electronic signature of the MFP of second embodiment of the invention and the flow chart of action;
Figure 16 A～B is used to illustrate according to the operation of the electronic document sending function that has added electronic signature of the MFP of third embodiment of the invention and the flow chart of action;
Figure 17 illustrates to be used for being provided with the figure that whether upgrades according to the window example of the digital certificates of the MFP of third embodiment of the invention;
Figure 18 is illustrated in according to the digital certificates among the step S63 of the 3rd embodiment to upgrade the flow chart of handling example; And
Figure 19 is the figure that the mechanism of conventional digital signature simply is shown.
Embodiment
Description describes the preferred embodiments of the present invention in detail.Should be noted that relative arrangement, numeral expression formula and the numerical value of the assembly of explanation do not limit the scope of the invention in these embodiments, unless stated otherwise.
Fig. 1 is the figure that illustrates according to the configuration of the network system of the embodiment of the invention.
This network system comprises MFP (printing device) 110, server apparatus 120 and client device 130.MFP 110, server apparatus 120 and client device 130 are connected by network 100, so that their swap datas mutually.Fig. 1 only illustrates a MFP110 and a client device.Yet this system can comprise a plurality of MFP and a plurality of client device.MFP 110 with scanner can be used as the photocopier and the network printer.
The electronic document storage that MFP 110 can receive with the electronic document that read by scanner or by network 100 is in its memory cell (HDD).MFP 110 with email client (Email transmission) function can send to other network equipment by the electronic document that Email will be stored in its memory cell.MFP110 has the public key encryption parts that will be used to sign electronically etc.MFP 110 can also keep using MFP 110 the user private key, PKI and comprise the digital certificates of PKI.To be stored in electronic document in the memory cell by Email when sending to other network equipment, MFP 110 also has by using private key, PKI and comprising the digital certificates of PKI add function from electronic signature to this electronic document.MFP 110 can also generate the solicited message of issuing of the digital certificates that comprise the PKI that is kept by MFP itself, and asks issuing of digital certificates to the server apparatus 120 of carrying out certificate granting service (CA service) on network.MFP 110 can obtain and keep the digital certificates issued in response to this request by server apparatus 120.
In this embodiment, control and the communication protocol relevant with Email transmission/reception between MFP 110, server apparatus 120 and the client device 130 are standard agreement SMTP (Simple Mail Transfer Protocol, Simple Mail Transfer protocol) and POP (Post Office Protocol, post office protocol).Yet, can use any other communication protocol to communicate.For electronic document being sent to the device on the network, MFP 110 can use by for example SMB (the ServerMessage Block beyond the Email, Server Message Block) file transfer of agreement or HTTP (HyperText Transfer Protocol, HTML (Hypertext Markup Language)) or the communication protocol of FTP (File TransferProtocol, file transfer protocol (FTP)) etc.
Fig. 2 is the block diagram that the hardware configuration of the printing device (MFP) 110 according to this embodiment is shown.
CPU (CPU) 201 carries out the apparatus control program that is stored in ROM (read-only memory) 202 or the hard disk (HD) 209, thereby controls the unit that is connected with system bus 205 comprehensively.RAM 203 is as main storage or the service area of CPU 201.NVRAM 204 keeps the various configuration informations of MFP 110 and the nonvolatile memory of state information.Hardware units (device) such as scanner relevant with printing function 207 and Printer Engine 212 are read in Setup Controller (DVC) 206 controls with for example image of MFP 110.Disk controller (DKC) 208 controls are to the visit of hard disk 209.Hard disk 209 storage spooled print data and in order to final controlling element control with according to the application program of the function of this embodiment.Hard disk 209 also store M FP 110 or use MFP 110 the user private key, PKI and comprise the digital certificates of PKI.Each program that is stored in the hard disk 209 is loaded into RAM 203, and carries out described each program.Network interface unit (NIC) 210 is by LAN (local area network (LAN)) 100 and the network printer or other network equipment two-way exchange data.UI (user interface) 211 with touch panel displays screen and various button and button can indicate MFP 110 to carry out and be provided with and print, or sends the electronic document with electronic signature by Email.
Fig. 3 is the block diagram that illustrates according to the hardware configuration of the server apparatus 120 of this embodiment or client device 130.In this embodiment, server apparatus 120 and client device 130 have the same hardware structure, and this structure is identical with the hardware configuration of common PC, but the control program difference.
Fig. 4 illustrates the figure of formation according to the configuration of the guidance panel of the user interface 211 of the MFP 110 of this embodiment.
Provide the instruction of handling according to the electronic document transmission of this embodiment etc. by operating touch panel 401 and button.
Fig. 5 A～B is the flow chart that is used to illustrate according to the operation of the electronic document sending function that has added electronic signature of the MFP 110 of this embodiment.In ROM 202 or hard disk 209, and under the control of CPU 201, carry out this program in order to the procedure stores of carrying out this processing.
Want to press the service button S of MFP 110 user interfaces from the user that MFP 110 sends electronic document.Demonstrate the electronic document sending function action pane that has added electronic signature shown in Figure 6.The user is by touching touch panel 401 or pressing various buttons and come executable operations.
In this embodiment, MFP 110 can send to the Email with electronic document of electronic signature the server apparatus 120 as e-mail server.The e-mail client application of client device 130 can receive this Email.In the MFP 110 that sends this Email, carry out in advance with the Email of MFP 110 and send relevant various settings (the smtp server address of server apparatus 120 and the information that authenticates about SMTP).In being provided with, the button R that is provided with that the user presses user interface 211 is provided with window to show Email on touch panel 401, and according to this window is set various information are set.
Fig. 6 illustrates the figure that is used to be provided with according to the example of the user interface windows of the electronic document sending function that has added electronic signature of the MFP 110 of this embodiment.
With reference to figure 6, the user is to the destination of hurdle 601 input Emails.The user presses load button 602 to import destinations to hurdle, destination 601.When the user presses load button 602, on touch panel 401, show keyboard in order to input character etc.The user presses the button 603 with named place of destination in address book.When the user presses the button 603, explicit address book on touch panel 401.The user specifies the destination that is included in the address book, thereby finishes to the input of the destination on hurdle, destination 601.The user specifies the electronic document in being stored in memory cell (hard disk 209) in hurdle 604 and sends the object document.When the user presses electronic document reference buttons 605, the tabulation that is stored in the electronic document in the memory cell is presented on the touch panel 401.The user can specify to send the object document by specifying the particular electronic document in the shown electronic document list.When the user presses the file format button, with pull-down menu display file form.The user can select the file format that will send.For file format, as shown in Figure 6, can set in advance default value.The title (theme) that the user will send the object document is input to theme input field 607.The user presses load button 608 sends the object document with input title.The function of load button 608 is identical with the function of above-mentioned load button 602.Press the button 609 to indicate to sending object document interpolation electronic signature.Button 610 is used to specify timed sending.The user presses and sends executive button 611 to send the document immediately.
Follow operation with reference to the flowchart text MFP 110 among figure 5A～B.
Suppose that MFP 110 shows the electronic document sending function action pane that has added electronic signature when this processing beginning.At step S1, the input that MFP 110 waits for from user interface 211.If imported the information (having carried out input operation) of some type, then handle and enter step S2.At step S2, MFP 110 judges the type of input operation.Carried out the destination input operation if be judged as, then handled entering step S3 being stored among the RAM 203 as the e-mail address of destination information input.When the destination input is finished dealing with, handle the input that turns back to step S1 and wait for.
In order to import destination information in step S3, the user presses the load button 602 among Fig. 6.Then, on touch panel 401, show soft keyboard.The user can be by using soft keyboard input destination e-mail address.In this embodiment, e-mail address can be remained in the address book.Therefore, the e-mail address that remains in the address book can also be appointed as destination information.The e-mail address that remains in the address book is stored in NVRAM 204 or the hard disk 209, and reads this information when needed.For the e-mail address that selects your destination from address book, the user presses the button 603.When supressing button 603, read the e-mail address that is stored in NVRAM 204 or the hard disk 209, and the tabulation of the e-mail address read is presented on the touch panel 401.When the user has selected to be designated as the e-mail address of destination, selected e-mail address is chosen as the destination from shown thus email address list.
Fig. 7 is the figure that the content of explicit address book is shown and selects the state of e-mail address 701.
When the user presses confirming button 702, selected e-mail address 701 is defined as the destination.Show to turn back to home window (Fig. 6), and in hurdle, destination 601 explicit address " sato@aaa.co.jp ".
Carry out Manuscript scanner if in step S2, be judged as to have indicated, then handle entering step S4 so that Setup Controller 206 gated sweep devices 207 by scanner 207.Scanner 207 scannings original copy placed on it.RAM 203 keeps the electronic data (below be referred to as electronic document) of the original copy that scanned.When finishing dealing with among the step S4, handle turning back to step S1.
In order to provide the instruction that is used for scan manuscript, the user is positioned over original copy on the scanner 207 of MFP110, and presses start button 403.In this embodiment, MFP110 with the electronic document of the original copy that scanned or by network 100 from electronic document storage that external device (ED) received hard disk 209.The user can also specify the electronic document that remains among the MFP110 as sending the object document.
Specify the operation that sends the object document if in step S2, be judged as to have carried out, then handle entering step S5 reading specified electronic document, and it is stored among the RAM 203 as transmission object document.Send the object document in order to specify, the user presses the reference buttons 605 among Fig. 6.When pressing reference buttons 605, MFP 110 reads the tabulation that is stored in the electronic document in the hard disk 209, and this tabulation is presented on the touch panel 401.MFP 110 according to this embodiment not only keeps electronic document itself, but also the index informations such as document title, paper size, number of pages and date saved/time that keep each electronic document are as management information.When showing electronic document list, MFP can read and the corresponding index information of each electronic document, and shows this index information.
Fig. 8 is the figure that the state of having selected electronic document (document title is " AAA ") 801 from shown thus electronic document list is shown.
When the user has specified electronic document to be sent and supressed confirming button 802 from shown electronic document list, specify this electronic document as transmission object document, and demonstration turn back to home window shown in Figure 6.In this case, the electronic document that the document title of specified electronic document is presented among Fig. 6 is specified in the hurdle 604.Afterwards, when the user pressed the file format button, as sending file format, the user can select one of them with drop-down menus'display PDF, TIFF and JIF.File format is not limited to PDF, TIFF and JIF.
Carried out the theme input operation if in step S2, be judged as, then handled entering step S6 and remain among the RAM203 will represent the information of importing theme (theme of Email).When this is finished dealing with, handle the input that turns back among the step S1 and wait for that window shows.In order to import theme in step S6, the user presses load button 608.Then, on touch panel 401, show soft keyboard.The user is by pressing the button input theme of soft keyboard.
Fig. 9 illustrates to be through with the destination and to send the appointment of object document and the figure of the example of the input wait window demonstration that theme is imported.Among Fig. 9 with Fig. 6 in identical Reference numeral represent same section.
In this example, in hurdle, destination 601, be provided with address specified among Fig. 7.Specify the document title that is provided with selected electronic document in Fig. 8 in the hurdle 604 at electronic document.In addition, in theme input field 607, be provided with " document " of expression document.
Specified electronic signature button 609 if in step S2, be judged as, then handled entering step S7.As mentioned above, MFP 110 can be used for private key, the PKI that signs electronically to the electronic document interpolation and remain on NVRAM 204 or hard disk 209 digital certificates that comprise PKI a plurality of.
At step S7, when the user has specified the key that is used to sign electronically and digital certificates, the electronic signature of adding to electronic document to be sent is set.When having specified the key that is used to sign electronically and digital certificates, RAM 203 is kept for discerning the information of key and digital certificates.When this is finished dealing with, handle the wait window input that turns back among the step S1.
In order to provide the instruction of adding electronic signature, the user presses the electronic signature button 609 among Fig. 6.When supressing electronic signature button 609, read the key and the digital certificates that are stored in NVRAM204 or the hard disk 209.Based on key of being read and digital certificates, on touch panel 401, show key/list of cert.
Figure 11 is the figure that the demonstration example of key/list of cert is shown.In this embodiment, the title (key title), Key Tpe (public key algorithm) and the key bit length (key length) that in this tabulation, show every pair of private key and PKI.Details the Show Button is added to this tabulation, to show the details of each digital certificates relevant with PKI with a pair of private key.
Figure 10 is the figure that is illustrated in the demonstration example of the digital certificates details window when pressing details the Show Button.
In this embodiment, version, sequence number and the issuer of digital certificates, title and many information such as the from date of effective time and due date of certificate authority destination in digital certificates details window 1001, have been shown.When the user presses confirming button 1002, show to turn back to key/list of cert.
Figure 11 is the figure that the demonstration example of the state of having selected the key that will be used to sign electronically and digital certificates from shown key/list of cert is shown.
As shown in figure 11, key and digital certificates 1101 have been selected.When the user specified confirming button 1102, selected key and digital certificates were set to key and the digital certificates that will be used to sign electronically, and showed and turn back to previous window (Fig. 6 or 9).At this moment, MFP 110 information that will be used for discerning selected key and digital certificates remains on RAM 203.Key and digital certificates represent to generate the generation information of electronic signature.
Supress timed sending button 610 with the indication timed sending if in step S2, be judged as the user, then handle and enter step S8, with the date (time) of incoming timing transmission.RAM 203 keeps the information of expression input date.When this is finished dealing with, handle the wait window input that turns back among the step S1.
In order to provide the instruction of timed sending, the user presses the timed sending button 610 among Fig. 6.When pressing timed sending button 610, show that on touch panel 401 timed sending shown in Figure 12 is provided with window.
Figure 12 is the figure of example that the window of the date that is used to be provided with timed sending is shown.
The user imports date of shipping/time by the numeric keypad 402 that uses user interface 211 to this window.The date of input is presented in the input field 1201.When the Close Date/when input time, the user presses button 1202 is set.The date of input is set in order to carry out the date of timed sending.Processing turns back to step S1, and demonstration turns back to home window.
Send execution command if in step S2, be judged as to have imported, then handle entering step S9, to judge whether to have imported all the required information that send.Among the step S9 many judge that object information comprise the destination information among the step S3 and the information of the transmission object document among step S4 or the S5.At step S10,, then handle and enter step S11 if in step S9, be judged as all the required information that send of having imported.If input does not send all required information, then handle and enter step S23 to show wrong window.Processing turns back to step S1.In this case, mistake window display message " you still need to import the required information that sends ", and show required item.For example, display message " please be imported the destination ".When the user supresses confirming button in this window, show to turn back to the input window shown in Fig. 6.
At step S11, judge whether in step S7, to be provided with the electronic signature interpolation or in step S8, be provided with timed sending.If arbitrary processing is not set, then read and be designated as the electronic document that sends the object document from hard disk, convert this electronic document the file format of appointment in step S5 to, and hold it among the RAM 203.Processing enters step S20.If be provided with one of them processing, then handle and enter step S12.At step S20, be provided with and be stored in the information among the RAM 203 according to smtp protocol with before step S20, send the Email that has as the electronic document of annex.At step S21, judge whether Email sends successful.If send successfully, then end process.If send failure, then handle entering step S22 showing wrong window, and end process.This mistake window display message " sends failure " as wrong content.
At step S12, judge whether to be provided with electronic signature is added and timed sending the two.If only be provided with one of them, then handle and enter step S13.If be provided with the two, then handle and enter step S16.At step S13, judge whether to be provided with timed sending.Be provided with timed sending if be judged as, then handle entering step S14 temporarily to stop this processing, till date specified in step S8.In this designated date/time, read the electronic document that is designated as transmission object document from hard disk, convert this electronic document to file format specified in step S5, and hold it among the RAM 203.Processing enters step S20 with send Email.If be judged as at step S13 timed sending be not set, then read and be designated as the electronic document that sends the object document from hard disk, convert this electronic document to file format specified in step S5, and hold it among the RAM 203.Processing enters step S15 to generate the electronic signature of giving this electronic document with adding.After adding electronic signature to data for electronic documents, handle and enter step S20 with send Email.
If being provided with that electronic signature is added and timed sending the two, then processing enters step S16 to open the sign that the timed sending of the electronic document with electronic signature is being carried out in expression.Based on the value of statistical indicant among the NVRAM 204, limit the deletion of the digital certificates relevant with PKI with a pair of private key.Processing enters step S17 temporarily stopping this processing, in step S8 till the specified date.In this designated date/time, read the electronic document that is designated as transmission object document from hard disk, convert this electronic document to file format specified in step S5, and hold it among the RAM 203.At step S18,, generate the electronic signature of electronic document to be sent by using selected key and digital certificates (in order to generate the generation information of electronic signature) in step S7.After add giving electronic document, handle entering step S19 to remove at the set value of statistical indicant of step S16 and to be stored in key and certificate in the presumptive area of RAM203 with this electronic signature.Processing enters step S20 with send Email.
Figure 13 is used for illustrating private key, the PKI that deletion is used to sign electronically at the MFP 110 according to this embodiment and the operation of the digital certificates that comprise PKI and the flow chart of action.Will be in ROM 202 or hard disk 209 in order to the procedure stores of carrying out this processing, and under the control of CPU 201, carry out this program.
The user who wants to delete key and digital certificates presses the service button S of the user interface 211 of MFP 110.MFP 110 shows key/digital certificates tabulation.
Figure 14 illustrates the figure that has shown key/digital certificates tabulation and selected the state of information 1401.
At step S31, MFP 110 reads key and the digital certificates that are stored in NVRAM 204 or the hard disk 209.MFP 110 according to this embodiment can keep a plurality of keys and digital certificates.Therefore, the processing among repeating step S31 and the S32 is till getting access to all keys and digital certificates that kept in step S32.When having obtained all keys and digital certificates, handle to enter step S33, with based on the information of being read display list 1400 (Figure 14) on touch panel 401 from step S32.Although in Figure 14, selected key and digital certificates (information 1401), in home window, do not shown selection.
In this embodiment, the title (key title), Key Tpe (public key algorithm) and the key length that in this tabulation, show every pair of private key and PKI.When the user presses details the Show Button in this tabulation, can in digital certificates details window shown in Figure 10, show the details of the respective electronic certificate relevant with PKI with a pair of private key.
In this embodiment, in digital certificates details window 1001, show version, sequence number and the issuer of digital certificates, title and many information such as the from date of effective time and due date of certificate authority destination.When the user presses confirming button 1002, show to turn back to key/digital certificates tabulation.
Processing enters step S34 to wait for the input from touch panel 401.When having carried out operation, handle entering the type of step S35 with decision operation.If in step S35, carried out key and digital certificates assigned operation, then selected specified key and digital certificates, as shown in figure 14.In Figure 14, shown in 1401, show the selection of key and digital certificates.The input that processing turns back among the step S34 is waited for.On the other hand, supress delete button 1402, then handle entering step S37 to judge whether to have selected key and digital certificates as deleting object if in step S35, be judged as.If selected key and digital certificates, then handle and enter step S38 as the deletion object.If do not select the deletion object, then handle entering step S40.At step S40, by fault processing display message " non-selected key/electronic information ".When the user presses confirming button in this mistake window, handle the processing that turns back among the step S33.
If selected key and digital certificates, then handle and enter step S38 as the deletion object.At step S38, MFP 110 is with reference to the information that is provided with and is stored in the value of statistical indicant among the NVRAM 204 and is kept in the step S7 of Fig. 6 in the step S16 of Fig. 5 A～B, with identification key and digital certificates.Judge whether to be provided with the timed sending of use selected key and digital certificates in step S36.If be judged as the timed sending that is provided with use selected key and digital certificates in step S36, then handle and enter step S40 to show wrong window.Show the message that removes restrictions " owing to be provided with the timed sending of this information of use, thereby can not delete this key/digital certificates information " by fault processing.When the user presses confirming button in this mistake window, handle the processing that turns back among the step S33.
If be judged as the timed sending that use selected key and digital certificates in step S36 are not set, then handle and enter step S39, be stored in key and digital certificates in NVRAM 204 or the hard disk 209 with deletion, and finish this processing.
Supress " cancellation " button 1403 if in step S35, be judged as, then finish this processing immediately.
As mentioned above,, should add electronic signature, and when having imported deletion and being used for the indication of the key of this electronic signature and digital certificates, limit this deletion processing to electronic document that will timed sending according to first embodiment.Prevent from like this to delete to electronic document that will timed sending and add electronic signature required private key and digital certificates.Therefore can prevent following any situation: owing to deleted required private key and digital certificates, thereby can not add electronic signature in set timed sending date.
Second embodiment
Figure 15 A～B is used to illustrate according to the operation of the electronic document sending function that has added electronic signature of the MFP 110 of second embodiment of the invention and the flow chart of action.Among Figure 15 A～B with the flow chart of above-mentioned Fig. 5 A～B in identical number of steps represent identical processing, and will omit its explanation.Will be in ROM 202 or hard disk 209 in order to the procedure stores of carrying out this processing, and under the control of CPU 201, carry out this program.MFP 110, server apparatus 120 and client device 130 according to second embodiment have the identical hardware configuration with above-mentioned first embodiment, and will omit its explanation.
At step S12, judge whether to be provided with electronic signature is added and timed sending the two.If only be provided with one of them, then handle and enter step S13.If be provided with the two, then handle and enter step S51.At step S51, select to be used to generate the digital certificates of electronic signature the digital certificates in being stored in NVRAM 204 or hard disk 209, and obtain the due date of selected digital certificates.Set timed sending date is compared the due date with the digital certificates that obtained.Drop in the effective time of these digital certificates if be judged as the timed sending date, then handle entering step S17, to carry out normal timed sending at step S52.On the other hand, drop on outside the effective time of digital certificates, then handle entering step S55, with error process if be judged as the timed sending date at step S52.
In fault processing, " you are that the specified date of timed sending is outside the effective time of the digital certificates that are used to sign electronically to touch panel 401 display messages.Please select other key and certificate or other date is set for timed sending ", thus make be provided with invalid.
At step S17, temporarily stop this processing, till specified timed sending date.In this designated date/time, read the electronic document that is designated as transmission object document from hard disk, convert this electronic document to file format specified in step S5, and hold it among the RAM 203.Processing enters step S18, so that the electronic document that will send is generated electronic signature.After adding electronic signature to electronic document, handle and enter step S20 with send Email.
As mentioned above, according to second embodiment, when the timed sending date drops on outside effective time of the digital certificates that are used to sign electronically, can present warning (warning shows) to the user.Therefore can prevent following any situation: owing to expire at timed sending date digital certificates, thereby the electronic signature of digital certificates is invalid.
The 3rd embodiment
Figure 16 A～B is used to illustrate according to the operation of the electronic document sending function that has added electronic signature of the MFP 110 of third embodiment of the invention and the flow chart of action.Among Figure 16 A～B with the flow chart of above-mentioned Figure 15 A～B in identical number of steps represent identical processing, and will omit its explanation.Will be in ROM 202 or hard disk 209 in order to the procedure stores of carrying out this processing, and under the control of CPU 201, carry out this program.MFP 110, server apparatus 120 and client device 130 according to the 3rd embodiment have the identical hardware configuration with above-mentioned first embodiment, and will omit its explanation.Here the processing that is different from the flow chart among Fig. 5 and Figure 15 will mainly be described.
At step S12, judge whether to be provided with electronic signature is added and timed sending the two.If only be provided with one of them, then handle and enter step S13.If be provided with the two, then handle and enter step S51.At step S51, select to be used to generate the digital certificates of electronic signature the digital certificates in being stored in NVRAM 204 or hard disk 209, and obtain the due date of selected digital certificates.At step S52, with set timed sending date and compare the due date of these digital certificates.Drop in the effective time of these digital certificates if be judged as the timed sending date, then handle entering step S17, have the timed sending that electronic signature is added with execution.
On the other hand, in step S52, if the timed sending date dropped on outside the effective time of these digital certificates, then handle entering step S61, whether upgrade the window of the digital certificates that are used to generate electronic signature on touch panel 401, to show as shown in figure 17 selection.
Figure 17 illustrates to be used for being provided with the figure that whether upgrades according to the window example of the digital certificates of the MFP of third embodiment of the invention.
The user presses "Yes" button 1701 to upgrade digital certificates.Otherwise the user presses "No" button 1702.
At step S62, judge the button of being pressed.If supress "Yes" button 1701, then handle and enter step S63.If supress "No" button 1702, then handle the fault processing that enters among the step S67.In the fault processing of step S67, " the renewal of cancellation certificate of touch panel 401 display messages.In order to send, please to select other key and digital certificates or other date is set for timed sending ".When the user supresses confirming button in this window, handle turning back to step S1.
In order to upgrade digital certificates, upgrade the digital certificates that are used to sign electronically at step S63, and processing enters step S64.At step S64, judge whether the renewal of digital certificates is successful.If upgraded digital certificates, then handle and enter step S65.If the fault processing that enters among the step S67 is then handled in the renewal of digital certificates failure.In this case, at step S67, " the renewal failure of digital certificates of touch panel 401 display messages.In order to send, please to select other key and digital certificates or other date is set for timed sending ".When the user presses confirming button in this window, handle turning back to step S1.
At step S65, temporarily stop to handle, till specified timed sending date.In specified date, read the electronic document that is designated as transmission object document from hard disk, convert this electronic document to file format specified in step S5, and hold it among the RAM 203.Processing enters step S66, generates the electronic signature of electronic document to be sent with the digital certificates after upgrading by use.After adding electronic signature to this electronic document, handle and enter step S20 with send Email.
Figure 18 illustrates according to the digital certificates among the step S63 of the 3rd embodiment to upgrade the flow chart of handling example.
In the 3rd embodiment, the server apparatus 120 on the network 100 is carried out the CA service and is issued request to receive digital certificates, issues request based on this and issues digital certificates, and upgrade this digital certificates.MFP 110 request CA service to be upgrading digital certificates, and the online digital certificates that obtain after the renewal.
At step S71, MFP 110 is connected with the CA service.If S72 is judged as successful connection in step, then handles and enter step S73.At step S73, the CSR that MFP 110 generates as formatted data is to ask digital certificates to be updated.Generate successfully if be judged as CSR, then handle entering step S75, the CA that the CSR that is generated in step S73 with the request that will upgrade and issue digital certificates (below be referred to as to issue request) sends in the server apparatus 120 serves.Send successfully if be judged as the request issued, then handle entering step S77 at step S76.At step S77, MFP 110 will with issue the request of obtaining of the corresponding digital certificates of request and send to server apparatus 120.Send successfully if be judged as the request of obtaining, then handle from step S78 and enter step S79.At step S79, the digital certificates that MFP 110 obtains after the renewal/issues.Processing enters step S80.If the digital certificates that are judged as after the renewal/issue obtain success, then finish this processing.
On the other hand, handle failure, then handle the fault processing that enters among the step S81,, and finish this processing with the connection of disconnection CA service if be judged as in the step in step S72, S74, S76, S78 and S80.
In this embodiment, suppose certificate management protocols such as using CMP as with MFP110 and server apparatus 120 between the relevant control/communication protocol of digital certificates management, wherein, communication protocols such as CMP use HTTP or FTP are transmitted.Yet the present invention is not limited to this.Can use any other existing or unique digital certificates management control/communication protocol to communicate.
As mentioned above, this embodiment remains among the MFP 110 and digital certificates that be used to generate a pair of private key and the PKI of electronic signature and comprise PKI by preventing to delete, and makes it possible to have reliably the timed sending of the data of electronic signature.
Also can be in the timed sending setting by suppressing data are added invalid signature, new valid timing date of shipping/time is set and upgrades invalid digital certificates prevent that invalid electronic signature from adding in, timed sending has the data of electronic signature.
Other embodiment
More than describe embodiments of the invention in detail.The present invention is applicable to system that comprises multiple arrangement or the equipment that comprises single assembly.
By directly or from remote site providing software program, and make the computer of this system or equipment read and carry out the program that is provided, also can realize the present invention in order to the function that realizes the foregoing description to system or equipment.In this case, always the present invention needn't adopt the form of program, as long as have the function of this program.
Therefore, be installed in and be used in the computer realize that the program code of function treatment of the present invention itself also realizes the present invention.That is to say that claim of the present invention also comprises the computer program of realizing function treatment of the present invention.In this case, as long as have the function of this program, this program can adopt any form, the program of carrying out as object code, by interpretive program or offer operating system (Operating System, script data OS).
Provide the example of the recording medium of program that floppy disk (Floppy ), hard disk, CD, magneto optical disk, MO, CD-ROM, CD-R, CD-RW, tape, Nonvolatile memory card, ROM and DVD (DVD-ROM and DVD-R) are arranged.
Can also use following procedure that method is provided.Client computer can be connected to homepage on the internet by browser, so that program is downloaded to recording mediums such as hard disk from this homepage.In this case, can download computer program of the present invention itself or comprise the compressed file of automatic installation function.The user program code that is comprised in the program of the present invention can be divided into a plurality of files, so that can download these files from different homepages.That is to say that claim of the present invention also comprises the www server that makes a plurality of user's download realize the program file of function treatment of the present invention.
Can encrypt program of the present invention, it is stored in the storage mediums such as CD-ROM, and be distributed to the user.Any user who satisfies predetermined condition can download in order to decipher the key information of this program from homepage by the internet.The user can carry out encrypted program by using this key information, and this program is installed in the computer.
When computer is carried out this program of reading, realized the function of the foregoing description.For example, when on computers OS of operation based on the operation part of this program or when carrying out actual treatment fully, also can realize the function of the foregoing description.
When the program that will read from recording medium writes in the memory of the functional expansion unit that inserts the expansion board the computer or be connected with computer and carries out this program, also can realize the function of the foregoing description.That is to say that the CPU of this expansion board or functional expansion unit can partly or entirely carry out actual treatment.
According to the present invention, when at the appointed time transmission has the data of electronic signature, can have the data of suitable electronic signature in this fixed time transmission.
Although the present invention has been described, should be appreciated that the present invention is not limited to disclosed exemplary embodiments with reference to exemplary embodiments.The scope of appended claims meets the wideest explanation, to comprise all these class modifications, equivalent structure and function.
Claims (14)
1. communication equipment, it has the function that at the appointed time sends data, and described communication equipment comprises:
Memory cell is used for storage and generates the employed generation information of electronic signature;
The signature generation unit is used for by using described generation information to generate described electronic signature;
Delete cells is used to delete described generation information;
Send the reservation unit, be used to preengage transmission data with the described electronic signature that generates by described signature generation unit; And
Limiting unit, when being used for the transmission when the data of having preengage the electronic signature that generates having by described transmission reservation unit, the generation information of the electronic signature that limit deleting adds institute's reservation data.
2. communication equipment according to claim 1 is characterized in that, described transmission reservation unit is used for reservation and sends, and makes at the appointed time to send the data with the described electronic signature that is generated by described signature generation unit.
3. communication equipment, it has the function that at the appointed time sends data, and described communication equipment comprises;
Memory cell is used for storage and generates the employed generation information of electronic signature;
The signature generation unit is used for by using described generation information to generate electronic signature;
Send the reservation unit, be used for reservation and send, at the appointed time to send data with the described electronic signature that generates by described signature generation unit;
Judging unit is used to judge that the described fixed time is whether in the effective time of described generation information; And
Notification unit, being used in described judgment unit judges is to warn to user notification not in described effective time the time the described fixed time.
4. communication equipment according to claim 3 is characterized in that, also comprises the warning display unit, and it is the described fixed time to show warning not in the effective time of described generation information the time that this warning display unit is used in described judgment unit judges.
5. communication equipment according to claim 3 is characterized in that, described generation information is digital certificates.
6. communication equipment according to claim 5 is characterized in that, also comprises updating block, and it is the described fixed time to upgrade described digital certificates not in described effective time the time that this updating block is used in described judgment unit judges.
7. communication equipment according to claim 6 is characterized in that, described updating block comprises:
Generation unit is used to generate the solicited message of issuing that described digital certificates are issued in request;
Transmitting element, the described solicited message of issuing that is used for being generated by described generation unit sends to the certificate granting center of issuing digital certificates; And
Acquiring unit is used for obtaining the digital certificates of being issued by described certificate granting center in response to the described solicited message of issuing.
8. the control method of a communication equipment, described communication equipment has the function that at the appointed time sends data, and described control method comprises:
Be stored in the memory and generation information that be used to generate electronic signature by use, generate electronic signature;
Delete described generation information;
The transmission of the data of the electronic signature that reservation generates having; And
When the transmission of the data of having preengage the electronic signature that generates having, the generation information of the electronic signature that limit deleting adds institute's reservation data.
9. the control method of communication equipment according to claim 8 is characterized in that, the reservation that at the appointed time sends the data with the electronic signature that is generated sends.
10. the control method of a communication equipment, described communication equipment has the function that at the appointed time sends data, and described control method comprises:
Be stored in the memory and generation information that be used to generate electronic signature by use, generate electronic signature;
Reservation sends, and has the data of the electronic signature that is generated at the appointed time to send;
Judge that the described fixed time is whether in the effective time of described generation information; And
When being judged as the described fixed time not in described effective time the time, warn to user notification.
11. the control method of communication equipment according to claim 10 is characterized in that, also is included in to be judged as the described fixed time and to show warning not in described effective time the time.
12. the control method of communication equipment according to claim 10 is characterized in that, described generation information is digital certificates.
13. the control method of communication equipment according to claim 12 is characterized in that, also comprises when being judged as the described fixed time upgrading described digital certificates not in described effective time the time.
14. the control method of communication equipment according to claim 13 is characterized in that, also comprises:
The solicited message of issuing of described digital certificates is issued in the request of generation;
The solicited message of issuing that is generated is sent to the certificate granting center of issuing digital certificates; And
In response to the described solicited message of issuing, obtain the digital certificates of issuing by described certificate granting center.
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| JP2006313597 | 2006-11-20 | ||
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| JP (1) | JP5100209B2 (en) |
| KR (1) | KR100975173B1 (en) |
| CN (1) | CN101188649A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102340399A (en) * | 2010-07-14 | 2012-02-01 | 富士施乐株式会社 | Information processing apparatus and information processing method |
| CN106507687A (en) * | 2015-07-07 | 2017-03-15 | 松下知识产权经营株式会社 | Authentication method |
| CN109039597A (en) * | 2017-06-08 | 2018-12-18 | 佳能株式会社 | Information processing unit, the control method and storage medium for controlling information processing unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5391766B2 (en) * | 2009-03-23 | 2014-01-15 | 株式会社Ｊｖｃケンウッド | Authentication method, authentication system, server device, and client device |
| JP5355487B2 (en) * | 2010-04-26 | 2013-11-27 | キヤノン株式会社 | Image transmitting apparatus and authentication method for image transmitting apparatus |
| JP2017151859A (en) * | 2016-02-26 | 2017-08-31 | 沖電気工業株式会社 | Information processing device and program |
| JP7208707B2 (en) * | 2017-02-17 | 2023-01-19 | キヤノン株式会社 | Information processing device and its control method and program |
| JP7187209B2 (en) * | 2018-06-19 | 2022-12-12 | キヤノン株式会社 | Information processing device, its control method and its program |
| JP7163083B2 (en) * | 2018-06-29 | 2022-10-31 | キヤノン株式会社 | Information processing device, control method for information processing device, and program |
| JP7262938B2 (en) | 2018-06-29 | 2023-04-24 | キヤノン株式会社 | Information processing device, control method for information processing device, and program |
| JP7015030B2 (en) * | 2020-02-20 | 2022-02-02 | 株式会社ユー・エス・イー | Information processing methods, information processing equipment and programs |
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| EP1197828A1 (en) * | 2000-10-11 | 2002-04-17 | Trustcopy Pte Ltd | Remote printing of secure and/or authenticated documents |
| JP2002215826A (en) * | 2001-01-19 | 2002-08-02 | Hitachi Ltd | Device and method for automatic certificate renewal |
| JP2005159726A (en) * | 2003-11-26 | 2005-06-16 | Canon Inc | Image forming apparatus and control method thereof, computer program, and computer readable recording medium |
| JP2005191675A (en) * | 2003-12-24 | 2005-07-14 | Murata Mach Ltd | Facsimile equipment |
| KR20050112391A (en) * | 2004-05-25 | 2005-11-30 | 삼성전자주식회사 | Printing method and apparatus by using printer jobs history |
| KR100797174B1 (en) * | 2004-07-24 | 2008-01-23 | 삼성전자주식회사 | Image forming apparatus and method for controlling an access to image forming data |
| US20060179299A1 (en) * | 2005-02-08 | 2006-08-10 | Murata Kikai Kabushiki Kaisha | E-mail communication device |
| JP4561387B2 (en) * | 2005-02-08 | 2010-10-13 | 村田機械株式会社 | E-mail communication device |
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- 2007-05-31 JP JP2007146105A patent/JP5100209B2/en not_active Expired - Fee Related
- 2007-11-20 CN CNA2007101873202A patent/CN101188649A/en active Pending
- 2007-11-20 KR KR1020070118815A patent/KR100975173B1/en active IP Right Grant
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102340399A (en) * | 2010-07-14 | 2012-02-01 | 富士施乐株式会社 | Information processing apparatus and information processing method |
| CN102340399B (en) * | 2010-07-14 | 2016-06-29 | 富士施乐株式会社 | Information processor and information processing method |
| CN106507687A (en) * | 2015-07-07 | 2017-03-15 | 松下知识产权经营株式会社 | Authentication method |
| CN109039597A (en) * | 2017-06-08 | 2018-12-18 | 佳能株式会社 | Information processing unit, the control method and storage medium for controlling information processing unit |
| US11212116B2 (en) | 2017-06-08 | 2021-12-28 | Canon Kabushiki Kaisha | Information processing apparatus, control method for controlling information processing apparatus, and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2008154196A (en) | 2008-07-03 |
| JP5100209B2 (en) | 2012-12-19 |
| KR100975173B1 (en) | 2010-08-10 |
| KR20080045656A (en) | 2008-05-23 |
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Application publication date: 20080528 |