JP2007066322A - Data processor and data processing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To attain a data processor and a data processing method capable of immediately executing other processing when an application generates an access request to a device via a driver. <P>SOLUTION: The data processor 100 has a handler 14 for IC memory and a handler 15 for communication according to processing content, a handler management table 17 which stores information representing correspondence relation between a transmitting destination for transmitting a message generated by the application 11 and a handler means and a driver 12. When the message generated by the application 11 is received, the driver 12 calls the IC memory handler 14 or the handler 15 for communication corresponding to the transmitting destination based on the transmitting destination described in the message and the information representing the correspondence relation stored in the handler management table 17. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a data processing apparatus and a data processing method for executing an application capable of accessing a device such as an IC memory via a driver.

  Normally, when an application running on the apparatus tries to access an external device such as an IC memory, it can be accessed using a driver for accessing the IC memory. In other words, the application outputs an access request to the driver, the driver retrieves data from the IC memory, and performs specific processing according to a request such as writing data to the IC memory. After the processing is completed, the driver retrieves from the IC memory. Get data or get a response to writing. The driver outputs the response result by the process or the data obtained by the process to the application, so that the application can obtain the result for the access request to the IC memory.

  However, when an application makes an access request to a device such as an IC memory via a driver, the application enters a wait state until a result such as a response from the driver is obtained. After an application issues an access request to the IC memory, depending on the contents of the process, there may be a case where the original process of the application may be executed without obtaining the access result from the IC memory, but the application is in a waiting state. For this reason, there is a problem that processing inherent in the application cannot be performed and the processing speed is reduced.

  Accordingly, an object of the present invention is to realize a data processing apparatus and a data processing method capable of immediately executing another process when an application issues an access request to a device via a driver.

  In order to solve the above-described problem, the data processing apparatus of the present invention executes a device that executes a predetermined process, an application that performs a process using the device, and an access process for the device. In a data processing apparatus comprising handler means and driver means for calling the handler in response to an instruction from the application and notifying the application that the instruction has been received, a plurality of handler means according to processing contents; Storage means for storing information indicating a correspondence relationship between a destination to which a message generated by the application or the device is transmitted and handler means, and the driver means is configured to store the message generated by the application or the device. When received, the message And a structure that calls the handler means corresponding to the destination based on the information indicating a correspondence relationship stored in the storage means and the destination to be.

  Further, the data processing method of the present invention includes a device that executes predetermined specific processing, an application that performs processing using the device, a plurality of handler means that executes access processing for the device, Storage means for storing information indicating a correspondence relationship between a destination to which an application or a message generated by the device is transmitted and handler means, and calling the handler according to an instruction from the application, and instructing the application A data processing method in a data processing apparatus comprising driver means for notifying acceptance, wherein the driver means receives a message generated by the application or the device, and the message is received by the receiving step. Received A calling step for calling one handler means corresponding to the transmission destination from a plurality of handler means based on the transmission destination described in the message and the information indicating the correspondence relationship stored in the storage means. Yes.

  In the above-described configuration of the present invention, the driver means responds to an inquiry from the application, and causes the handler means to access the device in response to a request from the application, so that the driver means immediately responds to the application. The application can execute processing of the application without waiting for a response of the final processing result in the device. Further, by simultaneously performing device access processing via a handler, the application can realize quick processing without waiting for the application until the device processing ends, and without waiting for a response from the driver.

  Furthermore, since a plurality of handlers are provided, a plurality of processes can be handled, and an easy-to-use data processing apparatus can be realized.

  The data processing apparatus of the present invention further includes a communication unit that transmits and receives the message via a network, and the handler unit called by the driver unit is a transmission destination that is determined in advance using the communication unit. You may comprise so that a message may be transmitted.

  In the above-described configuration of the present invention, by calling a handler means corresponding to a destination included in a message and transmitting the message via the network, the application is particularly effective in a time-consuming process such as a process via the network. However, there is no need to wait for the processing result, and it is possible to expect a quick processing of the application.

  In the present invention, the driver means responds to the inquiry from the application, and the driver means can return the response to the application immediately by causing the handler means to access the device in response to the request from the application. The application can execute the processing of the application without waiting for the response of the final processing result in the device. Further, by simultaneously performing device access processing via a handler, the application can realize quick processing without waiting for the application until the device processing ends, and without waiting for a response from the driver.

  The data processing apparatus and data processing method of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of a data processing apparatus according to the present invention.

  The data processing apparatus 100 of the present invention includes an application 11 (application of the present invention) (which holds an application handler 13 (handler means of the present invention) inside), a driver 12 (driver means of the present invention), and an IC memory handler. 14 (handler means of the present invention), communication handler 15 (handler means of the present invention), IC memory 16 (device of the present invention), handler management table 17 (storage means of the present invention), communication unit 18 (of the present invention) Communication means) and a display unit 19. Similarly, the data processing apparatus 100a, which is the communication partner of the present invention, also has an application 11a (which holds an application handler 13a therein), a driver 12a, an IC memory handler 14a, a communication handler 15a, an IC memory 16a, and handler management. It comprises a table 17a, a communication unit 18a, and a display unit 19a.

  The application 11 is activated and operates in the data processing apparatus 100, and performs a specific process. In this example, it is an application that can verify an electronic signature, and in order to request the communication partner to give an electronic signature, a request for sending a message to be attached with an electronic signature is made, and a request is made. It has a function of requesting a public key certificate from the public key authentication server, inquiring the validity verification server of the validity of the public key, and verifying the requested electronic signature based on the processed information.

  When the driver 12 accepts a message transmission request to give an electronic signature from the application 11, the driver 12 calls the IC memory handler 14 and requests the application 11 to send an encryption process for the message to be transmitted. It has a function of returning a response indicating that the request has been accepted. In addition, the communication handler 15 is called in order to transmit the encrypted message to a device for applying an electronic signature, that is, the data processing device 100a. Further, when data with an electronic signature is received from the data processing apparatus 100a, the IC memory handler 14 is called to perform the decryption process. When the decrypted data is received, the application 11 in the application 11 is used. The handler 13 is called and the electronic signature is verified.

  Note that a general driver is software that takes time when an application and hardware are connected, and a driver in the present invention is hardware in addition to software that takes time when connecting an application and hardware. The function to call the handler for connecting to is provided.

  The application handler 13 is a handler held in the application. When this handler is called, the application process is interrupted to perform a specific process. In the present invention, an electronic signature verification process is performed. The handler refers to an interrupt processing routine that is activated by an external interrupt. In the present embodiment, the handler is called by the driver 12 and is used to access a device such as the IC memory 16 or an interrupt for an application process. A program that performs processing.

  The IC memory handler 14 is a handler for accessing the IC memory 16, and when it is desired to perform message encryption processing and decryption processing within the IC memory 16, data to be encrypted by the IC memory 16 and decryption. Send data to be converted.

  The communication handler 15 is a handler that performs communication processing. It is called by the driver 12 corresponding to the transmission destination described in the message generated by processing in the IC memory 16 and performs transmission processing to a predetermined transmission destination. In the present invention, the IP address of the data processing apparatus 100a is stored in advance in a memory (not shown) as a transmission destination when encryption processing is performed, and the IP address is read out during transmission. A server for associating the transmission destination ID with the IP address may be arranged on the network in the communication handler 15, and the transmission destination ID may be transmitted to the server to obtain the IP address. .

  The IC memory 16 is a memory composed of a nonvolatile memory, is detachably mounted, and mainly performs encryption processing and decryption processing.

  The handler management table 17 calls a handler to be called corresponding to a destination (a destination specifying a device provided in the own device or an external device) described in the message sent from the application 11 or each of the above handlers. Remember. FIG. 2 is a diagram showing a specific example of the handler management table 17.

  The handler management table 17 stores a destination for specifying a device and a handler to be called in association with each other. When a message composed of three sets of <transmission source, transmission destination, and data content> is sent to the driver 12, the driver 12 is based on the transmission destination and handler management table 17 described in the sent message. Determine which handler to call and call the appropriate handler. The transmission destination is indicated by an ID for specifying a device, and each device (IC memory, application, etc.) can be specified by using this ID.

  The communication unit 18 communicates with the other party via the network under the control of the communication handler 15.

  The display unit 19 displays the result of verifying the electronic signature signed by the data processing apparatus 100a.

  The data processing device 100a is a device that receives an electronic signature request from the data processing device 100.

  The IC memory 16a decrypts the message transmitted from the data processing apparatus 100, and gives an electronic signature to the decrypted message. Then, the message with the electronic signature is encoded and returned to the IC memory driver 14.

  Other configurations are the same as those configuring the data processing apparatus 100. The contents stored in the handler management table 17a are different from the contents described in the handler management table 17. FIG. 3 is a specific example thereof. As shown in the figure, the handler that calls the IC memory 16a in the data processing device 100a and the communication handler 15 of the data processing device 100 are stored in association with each other so that they can be called according to the transmission destination described in the message. ing.

  A specific example in which an electronic signature is executed with the data processing apparatuses 100 and 100a configured as described above and the verification is performed will be described. FIG. 4 is a sequence diagram when performing the processing.

The application 11 accepts the ID of the IC memory 16 that performs encryption processing by the user's input operation, the ID of the IC memory 16a that assigns the electronic signature, and the data to which the electronic signature is attached, and transmits the received IC memory 16a. A request for giving an electronic signature is made to the data processing apparatus 100a, and the message m1 <ID of application 11, ID of IC memory 16, ID of IC memory 16a and data M> is output to driver 12 (S101). When the application 11 receives a response from the driver 12 in response to the request for giving an electronic signature, the application 11 starts an electronic signature verification process. First, the application 11 transmits a request message for requesting a public key certificate that is a public key certificate of the IC memory 16a to the public key certificate server, and acquires the public key certificate from the public key certificate server. (S102). A public key certificate is a certificate (Certificate Authority) that proves the connection between a user and a public key under his / her own responsibility. Address, etc.) and public key data are CA's own digital signatures.

  Further, the application 11 performs processing for inquiring the validity of the acquired public key certificate, and transmits an inquiry message to the validity verification server. The public key certificate is valid or invalid in the validity verification server. The result is obtained (S103). The public organization that manages whether or not the public key certificate is valid manages and operates the validity verification server, and returns the results managed in response to inquiries regarding validity. I am doing so.

  While the application 11 is executing these processes, the driver 12, the IC memory handler 14, and the communication handler 15 perform the following processes.

  The driver 12 responds to the application 11 with acceptance of the transmission request (S201), and calls a handler corresponding to the transmission destination described in the message received from the application 11 (S202). Here, since the ID of the IC memory 16 is described, the corresponding IC memory handler 14 is called based on the handler management table 17.

  The called IC memory handler 14 outputs the message m1 to the IC memory 16 (S203). The IC memory 16 that has received the message m1 extracts the data M in the message m1, encrypts the data M using a predetermined public key Pk2, and generates encrypted data C (S204). Then, the message m2 <the ID of the IC memory 16, the ID of the IC memory 16a, the ID of the IC memory 16a, C> is generated with the sender as the ID of the IC memory 16 and the destination as the ID of the IC memory 16a described in the data content column of the message m1 Then, the data is output to the IC memory handler 14 (S205).

  The IC memory handler 14 analyzes the message m2 and requests the driver 12 to transmit the encrypted data C to the transmission destination indicated by the ID of the IC memory 16a (S206). The driver 12 calls the communication handler 15 corresponding to the transmission destination described in the message m2 based on the handler management table 17 (S207). The called communication handler 15 is set in advance with a destination IP address. When called, the communication handler 15 is connected to the data processing apparatus 100a having the communication handler 15a specified by the set IP address. The message m2 is transmitted to the ID that specifies the IC memory 16a described in the message m2 (S208). The communication handler 15a has a server for storing the ID of the IC memory 16a and the IP address of the device having the IC memory 16a in association with each other without setting an IP address in advance. You may make it send out ID of IC memory 16a and take out a corresponding IP address.

  The communication handler 15a transmits a message m2 to the driver 12a (S209). The driver 12a that has received the message m2 calls the IC memory handler 14 corresponding to the transmission destination described in the message m2 based on the handler management table 17a (S210). The called IC memory handler 14a registers the message m2 in the IC memory 16a (S211).

  The IC memory 16a in which the message m2 is registered decrypts the encrypted data C described in the message m2 using the secret key Sk2, and obtains data M (S212). The IC memory 16a generates an electronic signature data MS by giving an electronic signature to the data M (S213), encrypts the MS using the public key Pk1, and generates encrypted data CS (S214). ).

  The IC memory 16a uses a transmission source and a transmission destination described in the message m2, and a message m3 having encrypted data CS that is data for returning the encrypted data CS <ID of the IC memory 16a, IC memory 16 ID, CS> is generated, and the message m3 is returned to the IC memory handler 14a (S215). The IC memory handler 14a requests the driver 12a to transmit the message m3 (S216), and the driver 12a calls the communication handler 15a corresponding to the destination of the message m3 based on the handler management table 17a (S217).

  The called communication handler 15a has a destination IP address set in advance. When called, the communication handler 15a is connected to the communication handler 15 specified by the set IP address, and the IC memory 16 is specified. The message m3 is transmitted to the ID to be sent (S218). The communication handler 15a has a server for storing the ID of the IC memory 16 and the IP address of the device having the IC memory 16 in association with each other without setting an IP address in advance. The ID of the IC memory 16 may be sent out and the corresponding IP address may be taken out.

  The communication handler 15 that has received the transmission process from the communication handler 15a outputs the message m3 to the driver 12 (S219). The driver 12 calls the IC memory handler 14 corresponding to the transmission destination described in the message m3 based on the handler management table 17 (S220).

  The called IC memory handler 14 transmits the message m3 to the destination specified by the ID of the IC memory 16 described in the message m3, that is, the IC memory 16 (S221). In the IC memory 16, the encrypted data CS in the transmitted message m3 is decrypted using the secret key Sk1, and the electronic signature data MS is obtained (S222). The IC memory 16 stores the transmission source (that is, the ID of the application 11) described in the message m1 received in S203, and can pass the message m4 to the application 11 using the stored transmission source. A message m4 <ID of the IC memory 16, ID of the application 11, MS> having the electronic signature data MS is generated so that the message m4 is returned to the IC memory handler 14 (S223). The IC memory handler 14 further transmits a message m4 to the driver 12 (S224).

  The driver 12 calls the application handler 13 corresponding to the ID of the application 11 that is the transmission destination described in the message m4 based on the handler management table 17 (S225).

  The called application handler 13 interrupts the processing of the application 11 and starts (S104). Then, the activated application handler 13 verifies whether the electronic signature of the data MS of the message m4 is valid. That is, it is determined whether or not the public key obtained by applying an electronic signature to the MS and the public key described in the public key certificate determined to be valid are described in the message m4. It is determined that the electronic signature given to the data MS is a legitimate electronic signature, and if it does not match, it is determined that the electronic signature is invalid (S105). Then, the determination result is output to the display unit (S106). It is assumed that the public key certificate request and the validity verification in S102 and S103 have been completed before the calling process of the application handler 13 in S225.

  After giving the electronic signature to the data to be transmitted by the above processing and obtaining the validity of the electronic signature, the user performs processing to send the data with the electronic signature having the validity to an arbitrary transmission destination. It can be carried out.

  The effects of making a transmission request from the application 11 to the driver 12 and sending an acceptance response to the transmission request from the driver 12 to the application 11 will be described.

  The application 11 makes a transmission request to the driver 12 and receives an acceptance response from the driver 12, so that the application 11 does not need to wait until the processing result for the transmission request is received from the driver 12. This process can be executed, and an efficient process can be realized.

  Next, another embodiment using a shared memory instead of a driver will be described.

  FIG. 5 is a block diagram of a data processing apparatus 200 according to another embodiment.

  The data processing apparatus 200 of the present invention includes an application 101 (application of the present invention) (which holds an application handler 103 (handler means of the present invention), a shared memory 102 (shared memory of the present invention), and an IC memory. It comprises a handler 104 (handler means of the present invention), a communication handler 105 (handler means of the present invention), an IC memory 106, a communication unit 107, and a display unit 108. Similarly, the data processing apparatus 200a, which is the communication partner of the present invention, also has an application 101a (which holds an application handler 13a therein), a shared memory 102a, an IC memory handler 104a, a communication handler 105a, an IC memory 106a, a communication Part 107a and display part 108a.

  The application 101 is activated and operates in the data processing apparatus 200, and performs predetermined processing. In this example, it is an application capable of verifying an electronic signature, requesting transmission of a message to which an electronic signature is attached, requesting, and requesting a public key certificate from a public key authentication server, Further, it has a function of inquiring the validity verification server about the validity of the public key and verifying the requested electronic signature based on the processed information.

  The application handler 103 is a handler held in the application. This handler always monitors the shared memory 102, and when a message having an ID for identifying the application as a transmission destination is registered in the shared memory, the handler for the application is used. The handler 103 executes interrupt processing. In the present invention, an electronic signature verification process is performed. The handler in the present embodiment indicates an interrupt processing routine activated by an external interrupt, and always monitors the shared memory 102 and satisfies a predetermined condition (a predetermined transmission destination is set in a message, etc.) ) And the handler corresponding to the condition operates by interrupt processing.

  The IC memory handler 104 is a handler for accessing the IC memory 106. This handler always monitors the shared memory 102, and when a message satisfying a specific condition is registered in the shared memory 102, the IC memory handler 104 is used. The handler 104 executes an interrupt process for accessing the IC memory 106. When performing an operation of writing to the shared memory 102, the process returns to the process of performing the monitoring operation of the shared memory 102 immediately after performing the writing operation. In the present invention, when a message describing an ID with the IC memory 105 as a transmission destination is registered in the shared memory 102, the IC memory handler 104 performs an operation of acquiring this message, and the acquired message is stored in the IC memory. It outputs to 106. Then, the message is output to the IC memory 105 so as to cause the IC memory 105 to perform message encryption processing or decryption processing. In addition, when data subjected to encryption processing and decryption processing is received from the IC memory 105, processing to write to the shared memory 102 is performed.

  The communication handler 105 is a handler that performs communication processing. This handler constantly monitors the shared memory 102, and when a message that satisfies a specific condition is registered in the shared memory, the communication handler 105 performs communication. Perform interrupt processing. In the present invention, when the message registered in the shared memory 102 is described with the ID of each device included in the data processing apparatus 200a as the transmission destination, the communication handler 105 is described as the transmission destination described in the message. The IP address corresponding to the ID that has been retrieved is taken out from a memory that is separately stored, and a message is transmitted to the extracted IP address. The communication handler 105 has a memory for storing an ID described as a transmission destination and an IP address as a physical destination in association with each other, and is described as a transmission destination of a registered message. The IP address corresponding to the ID is taken out, and the transmission processing of the transmission data is executed together with the ID described as the message transmission destination addressed to the IP address. When the message received from the data processing device 200 a is received, the received message is written into the shared memory 102.

  The IC memory 106 is a non-volatile memory, is detachably mounted, and mainly performs encryption processing and decryption processing.

  The communication unit 107 communicates with the other party via a network.

  The display unit 108 displays the result of verifying the electronic signature signed by the data processing device 200a.

  Next, the configuration of the data processing device 200a will be described. The data processing device 200a is a device that receives an electronic signature request from the data processing device 200.

  The IC memory 106a decrypts the message transmitted from the data processing device 200, and gives an electronic signature to the decrypted message. Then, the message with the electronic signature is encoded and returned to the IC memory driver 104.

  Other configurations are the same as those configuring the data processing apparatus 200.

  A specific example in which an electronic signature is executed with the data processing apparatuses 200 and 200a configured as described above and the verification is performed will be described. FIG. 6 is a sequence diagram when performing the processing.

  The application 101 receives an input of the ID of the IC memory 106 and the ID of the IC memory 106a from the user in order to make a request for giving an electronic signature to the data, and uses the received ID of the IC memory 106 and the ID of the IC memory 106a. Message m1 <ID of application 101, ID of IC memory 106, ID of IC memory 106a and data M> is generated, and message m1 is written to shared memory 102 (S301).

  When the application 101 registers a request for applying an electronic signature in the shared memory 102 in the shared memory 102, the application 101 starts a signature verification process. First, the application 11 transmits a request message for requesting a public key certificate that is a public key certificate of the IC memory 16a to the public key certificate server, and acquires the public key certificate from the public key certificate server. (S102). A public key certificate is a certificate (CA) that proves the connection between a user and a public key under its own responsibility. The identity of the user (name, affiliation, e-mail address, etc.) And the public key data are CA's own digital signatures.

  Further, the application 11 performs processing for inquiring the validity of the acquired public key certificate, and transmits an inquiry message to the validity verification server. The public key certificate is valid or invalid in the validity verification server. The result is obtained (S103). The public organization that manages whether or not the public key certificate is valid manages and operates the validity verification server, and returns the results managed in response to inquiries regarding validity. I am doing so.

  While the application 101 executes these processes, the IC memory handler 104 and the communication handler 105 perform the following processes.

  When the message m1 in which the ID of the IC memory 106 is described as the transmission destination is written in the shared memory 102, the IC memory handler 104 detects that the message m1 including the ID of the IC memory 106 is registered, The message m1 is extracted (S401) and output to the IC memory 106 (S403). In the IC memory 106, the data M included in the message m1 is encrypted using the public key Pk2 that is held in advance, and data C is generated (S404). Then, a message m2 <ID of the IC memory 106, ID of the IC memory 106a, ID of C> is generated from the message m1 with the transmission source as the ID of the IC memory 106 and the transmission destination as the ID of the IC memory 106a. Is returned to the handler 104 (S405).

  The IC memory handler 104 writes the message m2 in the shared memory 102 (S406). When the communication handler 105 detects that the message m2 in which the ID of the IC memory 106a is described as the transmission destination is registered in the shared memory 102, the communication handler 105 extracts the message m2 (S407). The communication handler 105 has a destination IP address set in advance. When interrupt processing is executed, the communication handler 105 is connected to the data processing apparatus 200a having the communication handler 105a specified by the set IP address. The extracted message m2 is transmitted to the ID specifying the IC memory 106a (S408). The communication handler 105a does not set an IP address in advance, but installs a server that stores the ID of the IC memory 106a and the IP address of the device having the IC memory 106a in association with each other. The ID of the memory 106a may be transmitted to extract the corresponding IP address.

  Next, the communication handler 105a of the data processing device 200a writes the received message m2 to the shared memory 102a (S409). The IC memory handler 104a constantly monitors the shared memory 102a. When it detects that the message m2 in which the ID of the IC memory 106a is described as the transmission destination is registered in the shared memory 102a, the IC memory handler 104a retrieves the message m2 ( (S410), the data is sent to the IC memory 106a (S411).

  The IC memory 106a decrypts the encrypted data C included in the message m2 using the secret key Sk2, generates data M (S412), adds an electronic signature to the data M, and forms an electronic signature data MS Is generated (S413). Then, the encrypted data CS is generated by encrypting the electronic signature data MS with the public key Pk1 (S414).

  The IC memory 106a uses a transmission source and a transmission destination described in the message m2, and a message m3 having encrypted data CS that is data for returning the encrypted data CS <ID of the IC memory 106a, IC memory 106, ID> CS> is generated, and the message m3 is returned to the IC memory handler 104a (S415). Then, the IC memory handler 104a writes the message m3 into the shared memory 102a (S416). When the communication handler 105a detects that the message m3 in which the ID of the IC memory 106 is described as the transmission destination is registered in the shared memory 102, the communication handler 105a extracts the message m3 (S417).

  In the communication handler 105a, the IP address of the transmission destination is set in advance, and when interrupt processing is executed, the communication handler 105a is connected to the data processing apparatus 200a having the communication handler 105 specified by the set IP address, The extracted message m3 is transmitted to the ID specifying the IC memory 106 (S418). The communication handler 105a has a server for storing the ID of the IC memory 106 and the IP address of the device having the IC memory 106 in association with each other without setting an IP address in advance. The ID of the IC memory 106 may be sent out and the corresponding IP address may be taken out.

  When receiving the message m3, the communication handler 105 writes the message m3 in the shared memory 102 (S419).

  When the IC memory handler 104 detects the message m3 describing the ID of the IC memory 106 as a transmission destination in the shared memory 102, the IC memory handler 104 extracts the message m3 (S420) and sends the message m3 to the IC memory 106 (S421). In the IC memory 106, the encrypted data CS in the received message m3 is decrypted with the secret key Sk1, and the electronic signature data MS is generated (S422). The IC memory 106 stores the transmission source (that is, the ID of the application 101) described in the message m1 received in S403, and can pass the message m4 to the application 101 using the stored transmission source. As described above, the message m4 <the ID of the IC memory 16, the ID of the application 11, the MS> having the electronic signature data MS is generated, and the message m4 is returned to the IC memory handler 14 (S423).

  The IC memory handler 104 writes the message m4 to the shared memory 102 (S424), and when the application handler 103 detects that the message m4 in which the application ID is described as the transmission destination is registered in the shared memory 102, the application memory 103 The handler 103 acquires the message m4, and the application handler 103 interrupts the processing of the application 101 and verifies whether the electronic signature of the electronic signature data MS of the acquired message m4 is valid.

  That is, it is determined whether or not the public key obtained by applying an electronic signature to the MS and the public key described in the public key certificate determined to be valid are described in the message m4. It is determined that the electronic signature given to the data MS is a valid electronic signature, and if it does not match, it is determined that the electronic signature is invalid (S304). Then, the determination result is output to the display unit (S305). It is assumed that the public key certificate request and validity verification in S302 and S303 have been completed before the calling process of the application handler 13 in S425 is performed.

  A process of sending data with a valid digital signature to any destination of the user after giving a digital signature to the data to be transmitted by the above processing and obtaining the validity of the digital signature. It can be carried out.

  The effect obtained by registering a message to be transmitted from the application 101 to the shared memory 102 and arbitrarily performing interrupt processing by each handler monitoring the shared memory will be described.

  The application 101 registers a message in the shared memory 102, performs another process after the registration, and the handler executes an appropriate interrupt process according to the message registered in the shared memory. There is no need to wait until the processing result of the message registered in 102 is received, and the application 11 can execute other processing, thereby realizing efficient processing.

It is a block block diagram of the data processing apparatus 100 and 100a of this invention. It is explanatory drawing which shows the specific example of the management table 17 in this invention. It is explanatory drawing which shows the specific example of the management table 17a in this invention. It is a sequence diagram of signal processing using the data processing devices 100 and 100a of the present invention. It is a block block diagram of the data processing apparatuses 200 and 200a of another embodiment of this invention. It is a sequence diagram of signal processing using the data processing devices 200 and 200a of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Application, 12 ... Driver, 13 ... Application handler, 14 ... IC memory handler, 15 ... Communication handler, 16 ... IC memory, 17 ... Handler management Table, 18 ... communication unit, 19 ... display unit.

Claims (3)

A device for executing a predetermined process, an application for performing a process using the device, a handler means for executing an access process for the device, and calling the handler in accordance with an instruction from the application A data processing apparatus comprising: driver means for notifying that the application has received an instruction;
A plurality of handler means according to the processing content;
Storage means for storing information indicating a correspondence relationship between a transmission destination and a handler means for transmitting a message generated by the application or the device;
When the driver means receives a message generated by the application or the device, the driver means corresponds to the destination based on the destination described in the message and information indicating the correspondence stored in the storage means A data processing device characterized by calling a handler means. A communication means for transmitting and receiving the message via a network;
2. The data processing apparatus according to claim 1, wherein the handler means called by the driver means transmits a message to a predetermined destination using the communication means. A device that executes a predetermined specific process, an application that performs a process using the device, a plurality of handler means that execute an access process for the device, and a message generated by the application or the device Storage means for storing information indicating the correspondence relationship between the transmission destination and the handler means, and driver means for calling the handler in response to an instruction from the application and notifying the application that the instruction has been accepted. A data processing method in a data processing apparatus comprising:
The driver means includes
Receiving a message generated by the application or the device;
When a message is received by the receiving step, a plurality of handler means correspond to the destination based on a destination described in the message and information indicating a correspondence relationship stored in the storage means. A data processing method comprising: a calling step for calling a handler means.

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