JPH0744425A - Ic card and ic card handling unit - Google Patents

Abstract

PURPOSE:To utilize a memory of the IC card effectively by storing a new application data file to a memory in place of an invalid application data file. CONSTITUTION:A memory area reserved once in which an application data file(ADF) with respect to a predetermined service has been stored in an IC card 2 is released by a card publication device 1 and the released area is used for a memory area for other ADF. That is, a CPU 11 of the card publication device 1 commands an invalidated ADF of the card 2 and invalidates the ADF allocated and stored in the memory. Then the CPU commands the storage of a new ADF in place of the invalidated ADF to store the new ADF to the memory in place of the invalidated ADF when the corresponding file is invalidated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an IC card and its I
The present invention relates to an IC card handling device that handles a C card.

[0002]

2. Description of the Related Art Generally, IC cards are manufactured, initialized,
It has a card life cycle of issuance, use, and disposal. In this case, the IC card allocates memory in the process of the card issuer's primary issuance process, from the time the card is manufactured until the card holder receives the service, the service is suspended, and the card is destroyed. , Application data file (ADF: Application Data) for the memory area to receive the service
File) is secured.

In such an IC card, when receiving a specific service, a file area used in the service is allocated (memory allocation) in advance, and what kind of data or key is stored within the allocated size. We are deciding whether or not to record the data, and we are allocating the data area to record the data.

That is, in all cases, a process called allocation is required before writing data.
It should be noted that the once allocated area cannot be changed or deleted (the area is released).

Therefore, even when the service is not received, the memory area of the file used by the service cannot be released, and the area for receiving the new service may not remain. Therefore, there is a drawback that the memory cannot be effectively used within the limited memory capacity of the IC card.

In the conventional IC card and IC card handling apparatus, the memory area of the IC card area once allocated by the primary issuer is released as another service even when the use of the service is stopped. It cannot be reused. Therefore, when the service is stopped, it becomes a useless area, and there is a drawback that the limited memory of the IC card cannot be effectively used.

[0007]

SUMMARY OF THE INVENTION The present invention eliminates the drawback that the memory of the IC card cannot be effectively used as described above, and an IC card and an IC card that can effectively use the memory of the IC card. The purpose is to provide a handling device.

[0008]

The IC card handling device of the present invention handles a IC card having a memory in which a plurality of application data files are respectively allocated and stored in areas of different predetermined sizes. First instruction means for instructing invalidation of the application data file, processing means for invalidating the application data file allocated and stored in the memory according to the instruction of the first instruction means, and A second instruction means for instructing storage of an application data file instead of the existing application data file, and the corresponding new file when the file corresponding to the instruction of the second instruction means is invalid. Use the data file for the invalid application And a storage means for storing in the memory instead of the data file.

The IC card of the present invention has a memory in which a plurality of application data files are respectively allocated and stored in areas of different predetermined sizes, and the predetermined application data files can be invalidated from an external device. Processing means for invalidating the application data file allocated and stored in the memory according to an instruction, and from the external device when a corresponding file is invalid according to an instruction from the external device The storage means stores the supplied new application data file in the memory instead of the invalid application data file.

[0010]

The present invention deals with an IC card having a memory in which a plurality of application data files are allocated and stored in different areas of a predetermined size in the above-mentioned configuration. , Invalidates the application data file allocated and stored in the memory according to the instruction, and instructs the storage of the application data file instead of the invalid application data file, When the corresponding file is invalid according to this instruction, the new application data file is stored in the memory instead of the invalid application data file.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an IC card issuing device as an IC card handling device of the present invention. This I
The C card issuing device 1 has a CPU 11 and an I that control the entire device.
A memory 12 in which a control program for controlling the issuance of the C card 2 and issuance management information of the IC card 2 are stored,
Display unit 1 that informs the operator of the issuing operation procedure and status
3. Keyboard 1 as an input device for operation
4, a magnetic disk 15 in which issuance data or the like as the processing content of the device is stored, and a read / write unit 16 for writing the issuance data or the like in the IC card 2 or reading the written data. .

In the IC card issuing device 1, as an option, a character or a photograph is written on the IC card 2 or the magnetic read / write unit 17 that writes or reads data to or from the magnetic stripe part provided on the IC card 2. A card printing unit 18 for printing the contents of the above is optionally provided.

The IC card 2 is, as shown in FIG. 2, a microprocessor (MPU) 2a, E for control.
Memory 2 for storing data composed of EPROM or the like
b, and a connector 2c for connecting the read / write unit 16 and the MPU 2a.

As shown in FIG. 3, the memory 2b corresponds to an initialization information storage area 21 in which initialization information is stored, a directory storage area 22 in which a directory for each file of each service is stored, and each service. It is configured by an ADF storage area 23 in which an application data file (ADF) is stored and a CDF storage area 24 in which a control data file (CDF) is stored.

As shown in FIGS. 3 and 4, each directory in the directory storage area 22 indicates a file name storage area 31 in which the file name of each service is stored, each file ID and whether the file is valid or invalid. An ID storage area 32 including a flag, a start address storage area 33 in which the start address of the target file is stored, a size storage area 34 in which the size of the target file is stored, and the like.

The file ID number is 1 to
127 is added. If the above flag is "0", the file is invalid and the flag is "1".
If, it means that the file is valid. The above flag is set to "1" at the time of allocation,
At the time of deallocation, "0" is set.

Each ADF in the ADF storage area 23 is shown in FIG.
As shown in, a directory storage area 41 in which a directory for each data storage area 42 is stored and a data storage area 42 in which actual data is stored are configured.

As shown in FIGS. 3 and 5, each directory in the directory storage area 41 has an A (area) ID storage area 51 consisting of a data storage area ID and a flag indicating whether the file is valid or invalid. Of the data storage area 42, a start address storage area 52 in which the start address of the data storage area 42 is stored, a size storage area 53 in which the size of the target data storage area 42 is stored, and the like.

As the data storage area ID, 1 to
127 is added. When the flag is "0", the area is invalid, and when the flag is "1", the area is valid. The flag is set to "1" at the time of allocation and set to "0" at the time of deallocation.

A method of releasing the memory area of the memory 2b will be described. That is, in order to release the once allocated memory area, it is necessary to satisfy all of the following conditions for protection of recorded data and security.

The service is stopped (file locked) and cannot be restarted (file unlocked). You must have a valid access authority to execute the file deletion process. A person having a legitimate access authority indicates an operator and a person who has a node who is authorized to execute the file deletion.

When all of the above conditions are satisfied, the IC card 2 causes the IC card 2 to specify the file to be deleted by the file deletion command (deallocation command) by the card issuing device 1 by the ID number.
The file directory as the management record is invalidated, the memory area is brought into an unused state, and the area is released.

When selecting a memory area, the IC card 2 determines the presence or absence of the memory area (if the memory area is invalid, the memory area does not exist) based on the file directory of the memory area and processes it.

Next, a method of securing the memory area of the memory 2b will be described with reference to FIG. That is, in order to secure the memory area, which file position is reused by the memory area creation command (allocation command, see FIG. 6) for the empty area (area that has never been used) of the memory 2b is set as the ID number. If all the following conditions are satisfied, the file directory as the invalid ADF management record is validated with new information and can be reused.

The file directory indicated by the ID number is invalid. The file size shall be within the file size of the first memory area created for an empty area (area that has never been used).

In carrying out the file creation processing, it is shown that the person has a legitimate access authority, and the operator and the person who has the node are given the legitimate access authority.
After the file is recreated in the memory area, the allocation of each data area or the like is newly allocated to new data.

The ID number indicating the file position at the time of releasing and reusing the area is automatically set in the card when a new memory area file is created for an empty area (an area that has never been used). This is the information that is specifically added.

In the card issuing device 1, the memory area in which the ADF for a predetermined service is stored in the IC card 2 is released and is reused as the memory area of the ADF for another service. Is.

Next, the issuing operation of the IC card 2 having the above-mentioned structure will be described with reference to the flowchart shown in FIG. Fig. 7 shows A once secured
The release of the DF will be described.

First, the issuer I
Insert the C card 2 into the read / write section 16 (ST
1). Then, the CPU 11 proves to the IC card 2 inserted in the read / write unit 16 that the terminal / system is a valid terminal authentication system (ST2). After that, the CPU 11 guides the input of the password of the issuer on the display unit 13. In response to this guidance, the issuer has a keyboard 1
Input the password by 4 (ST3).

In response to the input of this secret code, the CPU 11
By exchanging a secret code or the like with the IC card 2, it is proved that the operator is the proper issuer himself (ST4). Then, after this certification, the operator specifies the file ID number to be deleted by the keyboard 14
U11 sends a file deletion command (deallocation command) having the file ID number to the IC card 2
It is transmitted to the internal MPU 2a (ST5).

As a result, the MPU 2a in the IC card 2 is
Executes file deletion processing according to the received file deletion command (ST6). When normal termination is supplied from the IC card 2 to this file deletion processing (ST7), the CPU 11 records the file deletion in the issue management information in the memory 12 (ST8). After this recording, I
The C card 2 is ejected from the read / write section 16 (ST
9).

When an abnormality is supplied from the IC card 2 in step 7 above, the CPU 11 performs error processing.
Next, the file deletion process of the IC card 2 will be described with reference to the flowchart shown in FIG.

First, the MPU 2a analyzes the file deletion command from the read / write unit 16 (ST11). Then, the MPU 2a searches the memory 2b for a file in which a file ID number matching the file ID number in the file deletion command is stored, and the file is locked by the flag in the ID storage area 32 corresponding to the searched file. (Stopping use of the file corresponding to service work) is determined (ST12), and access authority unlocked (valid node and valid operator) is determined (ST13).

If the judgment results in steps 12 and 13 are correct, the MPU 2a sets the flag in the ID storage area 32 of the file and the flag in the AID storage area 51 to "1".
From 0 to “0”, the file directory and area directory of the ADF corresponding to the file ID number are invalidated, the memory area in which the ADF is stored becomes unused, and the memory area is released (S
T14, 15).

Next, the reuse of the memory area that has become unused due to the release of the ADF will be described with reference to the flowchart shown in FIG. First, the issuer
The IC card 2 having the memory area which is in the unused state due to the release of the ADF is inserted into the read / write section 16 (ST21). Then, the CPU 11 proves to the IC card 2 inserted in the read / write unit 16 that the terminal / system is valid by node authentication verification (S).
T22). After that, the CPU 11 guides the input of the password of the issuer on the display unit 13. In response to this guidance, the issuer inputs the password with the keyboard 14 (ST23).

In response to the input of this secret code, the CPU 11
By exchanging a secret code or the like with the IC card 2, it is proved that the operator is the proper issuer himself (ST24). Then, after this certification, the operator specifies the file ID number and size to be reused by the keyboard 14, so that the CPU 11 issues a file creation command (allocation command) having the file ID number to the I command.
It is transmitted to the MPU 2a in the C card 2 (ST25).

As a result, the MPU 2a in the IC card 2 is
Executes the file creation processing according to the received file creation command (ST26). When normal termination is supplied from the IC card 2 to this file creation processing (ST27), the CPU 11 records the file creation in the issue management information in the memory 12 (ST28). After this recording, the IC card 2 is ejected from the read / write section 16 (ST29).

When an abnormality is supplied from the IC card 2 in step 27, the CPU 11 performs error processing. Next, the file creation processing of the IC card 2 will be described with reference to the flowchart shown in FIG.

First, the MPU 2a analyzes the file creation command from the read / write section 16 (ST31). Then, when the file ID number in the file creation command is "00", the MPU 2a determines that it is new creation (additional writing) (ST32), and executes new creation processing (ST3).
3).

In step 32, the MPU 2a sets the file ID number in the file creation command to "0".
If it is not "0", it is determined to be reused (ST32), and the process proceeds to step 34.

Next, the MPU 2a searches the memory 2b for a file in which a file ID number matching the file ID number in the file creation command is stored, and a flag in the ID storage area 32 corresponding to the searched file. The invalid file is judged by (ST3
4) determine whether the size of the searched file is equal to or larger than the size in the file creation command (ST35),
By determining whether the access authority has been unlocked (a legitimate node and a legitimate operator) (ST36), it is determined whether or not reusable.

When the reusability is judged, the MPU 2a
Is the ID storage area 3 corresponding to the file ID number
The flag in 2 and the flag in the AID storage area 51 are changed from “0” to “1” (ST37), and each content of the memory area corresponding to the file ID number is also set to the current A
Rewrite with DF data.

As described above, the allocated area of the application data file for which the service of the IC card has been stopped is released to be an unused area, which can be reused as a memory area for application data files of other services. It was done like this.

As a result, when the file allocated for receiving the application service is stopped, it becomes possible to perform deallocation, and when receiving another application service, the file is allocated again in the deallocated memory space. Other allocation information can be written.

Therefore, in the conventional IC card, the area reserved for receiving a certain service is a useless area because the memory space is not released even if the service is not received, but the file delete command (deallocation command) is used. ) Is newly supported and the file creation command (allocation command) is reviewed, the area that is no longer serviced is not wasted and can be reused as a memory area for using other services.

[0047]

As described above in detail, according to the present invention,
An IC card and an IC card handling device capable of effectively utilizing the memory of the IC card can be provided.

[Brief description of drawings]

FIG. 1 is a block diagram showing the overall configuration of a card issuing device according to an embodiment of the present invention.

FIG. 2 is a block diagram illustrating a configuration of an IC card.

FIG. 3 is a diagram for explaining a memory configuration of an IC card.

FIG. 4 is a diagram for explaining a memory configuration of an IC card.

FIG. 5 is a diagram for explaining a memory configuration of an IC card.

FIG. 6 is a diagram for explaining a memory configuration of an IC card.

FIG. 7 is a flowchart for explaining the operation of the card issuing device.

FIG. 8 is a flowchart for explaining a file deletion process in a card.

FIG. 9 is a flowchart for explaining the operation of the card issuing device.

FIG. 10 is a flowchart for explaining a file deletion process in a card.

[Explanation of symbols]

 1 ... IC card issuing device (IC card handling device) 2 ... IC card 2a ... MPU 2b ... Memory 11 ... CPU 12 ... Memory 13 ... Display unit 14 ... Keyboard 16 ... Read / write unit

Claims (4)

[Claims] 1. An IC card handling device for handling an IC card having a memory in which a plurality of application data files are allocated and stored in different areas of a predetermined size, and a method for instructing invalidation of a predetermined application data file is provided. 1 instructing means, processing means for invalidating the application data file allocated and stored in the memory in accordance with the instruction of the first instructing means, and a substitute for the invalid application data file Second instruction means for instructing the storage of the application data file and the corresponding file according to the instruction of the second instruction means are invalid, the new application data file is invalidated. The application data file IC card handling device, characterized by comprising a storage means for storing the directory. 2. An IC card handling device that handles an IC card having a memory in which a plurality of application data files are allocated and stored in different areas of a predetermined size, and a method for instructing invalidation of a predetermined application data file is provided. 1 instructing means, processing means for invalidating the application data file allocated and stored in the memory in accordance with the instruction of the first instructing means, and a substitute for the invalid application data file Second instructing means for instructing storage and storage size of the application data file, and determining that the storage size instructed by the second instructing means is smaller than the size of the invalid application data file. And the judgment means When it is determined that the size is smaller than the size of the invalid application data file and the corresponding file is invalid according to the instruction of the second instruction unit, the new application data file is deleted. An IC card handling device, comprising: a storage unit that stores in the memory instead of the invalid application data file. 3. An IC card handling device for handling an IC card having a memory in which a plurality of application data files are allocated and stored in different areas of a predetermined size, and a method for instructing invalidation of a predetermined application data file is provided. 1 instructing means, a processing means for invalidating a flag in the memory corresponding to an application data file allocated and stored in the memory according to the instruction of the first instructing means, Second instruction means for instructing storage of an application data file instead of the invalid application data file, and a flag in the memory of the corresponding file invalidated in response to the instruction of the second instruction means And the judgment means to judge that If it is the cross-sectional, IC card handling device, characterized by comprising a storage means to be stored in the memory in place of the application data file that is the new application data file void above. 4. An IC card having a memory in which a plurality of application data files are respectively allocated and stored in areas of different predetermined sizes, and in response to an instruction to invalidate a predetermined application data file from an external device. The processing means for invalidating the application data file allocated and stored in the memory, and the new file supplied from the external device when the corresponding file is invalid according to the instruction from the external device. An IC card, comprising: storage means for storing a different application data file in the memory instead of the invalid application data file.