JP2004086804A - Ic card and ic card issuance system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an IC card and an IC card issuance system by which issuance is performed so as to satisfy requested items of each of card users in the case of secondary issuance, the card users are informed of start of new service when starting the new service and card users who desire addition of the new service can easily add the new service at an agency, etc. <P>SOLUTION: In the IC card, it has a DF deleting function for deleting a DF based on a DF deletion command to be inputted from the outside and re-creation of the deleted DF and an EF serving under the DF is made possible. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an IC card having an IC chip having a control element such as a writable / rewritable nonvolatile memory and a CPU, and having means for inputting / outputting data from outside, and an IC card having the same. The present invention relates to an IC card issuance system for performing secondary issuance after primary issuance of a card.
[0002]
[Prior art]
2. Description of the Related Art In recent years, a portable storage medium has a writable and rewritable non-volatile data memory and a CPU (Central Processing Unit) for controlling the same, and performs external data input / output. An IC card having a built-in IC chip equipped with the above is used in various industrial fields.
[0003]
In recent years, this kind of IC card has become expensive due to the security that is strongly required, and the cost per card is unavoidable. Under such circumstances, in order to reduce costs, it is effective to extend the validity period of the IC card or to distribute an IC card to which a new service can be easily added.
[0004]
Therefore, in recent IC cards, a method of supporting many functions by creating a large number of files in a memory in an IC chip and constructing a file structure has been adopted.
[0005]
[Problems to be solved by the invention]
In recent years, IC cards have been required to have high security and a variety of services. However, conventionally, at the time of primary issuance of an IC card, the service content of the IC card is determined (generated), so that a service corresponding to each user cannot be provided. That is, for example, even if the user A has the services X and Y (the service Z is unnecessary) and the user B has the services X and Z (the service Y is unnecessary), the IC cards of the users A and B are Commonly, IC cards equipped with fully supported services X, Y, and Z have been issued and distributed.
[0006]
In addition, in order to provide an IC card that supports all the requests of each user, cards that have been issued using the memory area of the IC card as much as possible have been distributed. However, if a new service starts within the validity period of the IC card, the new service cannot be added to the IC card, so the card supplier distributes the new card to card users who want to use the new service. The existing card must be discarded.
[0007]
Therefore, in the present invention, at the time of secondary issuance, issuance is performed to satisfy each requirement of the card user, and when a new service starts, the card user is notified of the start of the new service, and the addition of the new service is performed. An object of the present invention is to provide an IC card and an IC card issuing system that a desired card user can easily add at an agency or the like.
[0008]
[Means for Solving the Problems]
An IC card according to the present invention includes a communication unit for transmitting and receiving data to and from an external device, a memory for storing data, a file construction unit for creating a plurality of files in the memory to construct a file structure, When the data received via the communication means is a file deletion command, a file search means for searching the memory for a file specified by the file deletion command, and a file searched by the file search means can be reused. File deletion means for deleting the data from the memory.
[0009]
An IC card issuing system according to the present invention is an IC card issuing system for issuing an IC card by writing personal data for each application to each of the files of the IC card having a memory in which a plurality of files are created. A first communication unit for transmitting and receiving data to and from the memory, a memory for storing the data, a file construction unit for creating a plurality of files in the memory to construct a file structure, and the first communication unit. If the data received through the file is a file delete command, the file search means for searching the memory for a file specified by the file delete command, and the file search means so that the file searched by the file search means can be reused. An IC card comprising file deleting means for deleting from a memory; Second communication means for communicating via the first communication means, personal data storage means for storing a plurality of personal data in advance, and personal data reading for reading desired personal data from the personal data storage means Means, file issuing / deleting recognizing means for recognizing a file to be issued and a file to be deleted from the personal data read by the personal data reading means, and the personal data reading means based on the recognition result of the file issuing / deleting recognizing means. Generates an issuance command from the personal data read out by the user, and issues an issuance command transmission means for transmitting the issuance command to the IC card via the second communication means, and generates a file deletion command based on the recognition result of the file issuance / deletion recognition means And a file deletion command transmitting means for transmitting to the IC card via the second communication means. It is equipped with.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 schematically shows a configuration of an IC card according to the present embodiment. The present IC card 100 includes a magnetic stripe section 101 provided on the card surface, a communication section 102 as communication means for transmitting and receiving data to and from an external device (card reader / writer), and one (or more) IC chip 103.
[0011]
The communication unit 102 is configured as an antenna and a transmission / reception unit when the IC card 100 is a wireless IC card, and receives a modulated wave transmitted from a wireless card reader / writer in a non-contact manner or transmits a modulated wave to the outside. It is supposed to. In addition, a power supply and a clock pulse to be supplied to an internal circuit are generated from the received modulated wave. When the IC card 100 is a contact type IC card, the IC card 100 is configured as a contact portion, and transmits and receives data by making contact with an IC card contact terminal portion provided on a card reader / writer. Is to be obtained.
[0012]
The IC chip 103 includes a control element (for example, a CPU) 104 as control means, a data memory 105, a working memory 106, and a program memory 107 as storage means. Buried inside.
[0013]
The control element 104 executes a file creation process which will be described later, which is a point of the present embodiment, and performs various determination processes / determination processes and data processes such as writing and reading to and from a memory.
[0014]
The data memory 105 is used for storing various data such as application data, and is constituted by an erasable (rewritable) nonvolatile memory such as an EEPROM (electrically erasable and programmable read only memory). ing.
[0015]
The working memory 106 is a working memory for temporarily storing processing data when the control element 104 performs processing, and is composed of, for example, a volatile memory such as a RAM (random access memory). .
[0016]
The program memory 107 is composed of a non-rewritable fixed memory such as a mask ROM (read only memory), and stores a control program of the control element 104 including a subroutine for realizing each basic function. ing.
[0017]
In the data memory 105, for example, as shown in FIG. 2, information on a plurality of applications is stored in a file structure. This file structure has a tree structure of directories having various types of folders based on ISO / IEC7816-4, and a plurality of applications can be registered.
[0018]
As shown in FIG. 2, the top level is an MF (Master File) 201, and DFs (Dedicated File, first files) 202, 203 and 204 are provided as folders set under each application under the MF (Master File) 201. And EFs (Elementary Files, second files) 205, 206, 207, 208, 209, 210 used for storing user data actually used in the application.
Further, under the MF 201, a key EF211 used for storing a key for establishing an access right is provided.
[0019]
In this embodiment, the DF 202 (hereinafter, also referred to as DF1) has, for example, a DF name “Credit X” as an application file for the company X, and a subordinate of “DF X” There are two files EF205 (hereinafter also referred to as EF1-1) and EF206 (hereinafter also referred to as EF1-2) used in the application.
[0020]
In the DF 203 (hereinafter, also referred to as DF2), for example, the DF name is set as “service Y company” as an application file for the service Y company, and the EF 207 used by the application for the service Y company is under the DF name. (Hereinafter, also referred to as EF2-1) and EF208 (hereinafter, also referred to as EF2-2).
[0021]
Further, in the DF 204 (hereinafter, also referred to as DF3), for example, the DF name is set as “service Z company” as an application file for the service Z company, and under the DF name, the EF 209 used in the application for the service Z company is provided. (Hereinafter, also referred to as EF3-1) and EF210 (hereinafter, also referred to as EF3-2).
[0022]
FIG. 3 is a memory map in the data memory 105 based on the example of the file structure illustrated in FIG. As shown in FIG. 3, the data memory 105 has a key area 31, a directory area 32, a free area 33, and an area group 34 of the key EF 211.
The directory area 32 stores definition information 301 to 309 of DF1, DF2, DF3, EF1-1, EF1-2, EF2-1, EF2-2, EF3-1, and EF3-2. . The area group 34 includes a plurality of data areas, that is, a data area 375 of EF3-2, a data area 376 of EF3-1, a data area 377 of EF2-2, a data area 378 of EF2-1, and EF1-2. , And a data area 380 of EF1-1 are provided.
[0023]
The definition information 301, 304, 307 of DF1 to DF3 is, for example, information having a format as shown in FIG. That is, it is composed of a file identifier 401, DF name 402, access condition information 403, access counter 404, DF unique number 405, DF unique information 406, and file check byte 407.
[0024]
The file identifier 401 is a DF file identifier including a creation number assigned in the order of creation of the file for each file type for identifying the DF. The DF name 402 is a DF name as identification information given to identify the DF. The access condition information 403 is information indicating a collation condition that is essential when accessing the DF.
[0025]
The access counter 404 stores the number of times the DF has been accessed. The DF unique number 405 is a unique number for each DF generated inside the card when the DF is created. The DF unique information 406 is information unique to each DF. In the file check byte 407, a value that becomes 00H when EX-OR from the file identifier 401 to the file check byte 407 is set in order to check the validity of the created DF.
[0026]
Each definition information 302, 303, 305, 306, 308, 309 of EF1-1, EF1-2, EF2-1, EF2-2, EF3-1, EF3-2 has, for example, a format as shown in FIG. It is information to have. That is, it is composed of a file identifier 501, DF unique number 502, EF-ID 503, size information 504, data area start address 505, access condition information 506, and file check byte 507.
[0027]
The file identifier 501 is an EF file identifier including a creation number assigned in the file creation order for each file type for identifying the EF. The DF unique number 502 is a unique number for each EF generated inside the card when the EF is created. The EF-ID 503 is an ID number as identification information assigned to identify the EF.
[0028]
The size information 504 is the size information of the EF. The data area start address 505 is a start address of the data area 34. The access condition information 506 is information indicating a collation condition essential for accessing the EF. In the file check byte 507, a value that becomes 00H when EX-OR is performed from the file identifier 501 to the file check byte 507 in order to check the validity of the created EF.
[0029]
When a file in the data memory 105 is externally accessed, for example, as shown in FIG. 6, a status flag 601 indicating that an access right has been established and a current DF are defined in the working memory 106. Current DF definition information address 602, which is the current address, current DF definition information 603 to 608, which is the current DF definition information, current EF definition information address 609, which is the address where the current EF is defined, The current EF definition information 610 to 614, which is the definition information of the EF, is stored. The status flag 601 is set by collation or authentication of a key in the key area 31.
[0030]
These current DF definition information 602 to 614 are stored from the access target DF definition information in the directory area 32 of the data memory 105 when the data memory 105 is externally accessed.
[0031]
FIG. 7 shows a format example of a DF deletion command for deleting a DF supplied from an external device (card reader / writer). The DF deletion command includes a command header 701 and a DF name 702. The control element 104 searches the directory area 32 of the data memory 105 with the DF name 702 in the DF deletion command, thereby searching for and deleting the designated DF.
[0032]
Next, the processing of the DF deletion command in the IC card 100 in the above configuration will be described with reference to the flowchart shown in FIG.
When the DF deletion command shown in FIG. 7 is received from the external device, the definition information registered in the directory area 32 of the data memory 105 is read one by one (step S101). Next, based on the file identifiers 401 and 501 of the read definition information, it is confirmed whether or not the definition information is DF definition information (step S102). As a result of this check, if it is not DF definition information, the process returns to step S101. If it is DF definition information, it is checked whether the DF name 402 of the DF definition information matches the DF name 702 specified in the DF deletion command. (Step S103).
[0033]
If the two DF names do not match, the process returns to step S101. If the two DF names match, the DF definition information is read into the working memory 106, and the file identifier 401 is invalidated. The definition information is deleted (step S104). As an invalidation method, for example, a method of rewriting the state of the memory before the definition information is written can be considered.
[0034]
Next, the next definition information is read (step S105), and it is confirmed whether or not the definition information is EF definition information based on the file identifiers 401 and 501 of the read definition information (step S106). As a result of this check, if it is EF definition information, it is checked whether the DF unique number 502 of the EF definition information matches the DF unique number 606 of the EF definition information in the working memory 106 (step S107). If the unique numbers match, EF deletion processing is performed (step S108).
[0035]
If the result of the confirmation in step S106 is not EF definition information, or if the result of the confirmation in step S107 is that the two DF unique numbers do not match, the definition information in which the file identifier has been invalidated in step S104 is stored. Then, the file identifier 401 of the copied definition information is invalidated (step S109).
[0036]
Next, it is confirmed whether or not the next definition information exists in the directory area 32 of the data memory 105 (step S110). If there is the next definition information, the process returns to step S105 to repeat the above operation, and there is no next definition information. If so, the process ends.
Next, the EF deletion processing in step S108 will be described in detail with reference to the flowchart shown in FIG.
First, the EF definition information whose DF unique number matches is read into the working memory 106, the EF definition information address is read, and the file identifier 501 of the read EF definition information is invalidated (step S201). Next, based on the data area start address 505 and the size 504 of the read EF definition information, data defined after the corresponding EF is moved, and the data area defined at the end is converted into an unused area. (Step S202).
[0037]
Specifically, for example, as shown in FIG. 10, when EF2-1 (data area 378) is deleted, EF2-2 is stored in data area 378 of EF2-1, and EF3-1 is stored in data area 377 of EF2-2. The data is copied and moved one after another as in the case of..., And the data area 375 of the EF 3-2 is made an unused area (empty area). FIG. 11 shows the result of performing the above-described deletion processing.
[0038]
Next, the next definition information is read (step S203), and it is confirmed whether the information is EF definition information (step S204). If the EF definition information is found to be EF definition information, the EF definition information is copied to the area storing the EF definition information whose file identifier has been invalidated in step S201, and the data area of the copied EF definition information is stored. The start address 505 is rewritten to the address moved in step S202, and the file identifier 501 is invalidated (step S205).
[0039]
If the EF definition information is not the EF definition information as a result of the confirmation in step S204, the definition information is copied to an area storing the EF definition information whose file identifier has been invalidated in step S201, and the file identifier of the copied EF definition information is copied. 501 is invalidated (step S206).
[0040]
Next, it is checked whether there is the next definition information (step S207). If there is the next definition information, the process returns to step S203 to repeat the above-mentioned operation. If there is no next definition information, the EF deletion processing ends. .
[0041]
FIG. 12 shows a result obtained when, for example, a process for a DF deletion command for deleting DF2 is performed on the data memory 105 of FIG.
[0042]
Next, an IC card issuing system that issues the IC card 100 as described above will be described.
FIG. 13 schematically shows the configuration of the IC card issuing system according to the present embodiment. In FIG. 13, this IC card issuing system includes a terminal device 800 and a card issuing device 810, both of which are connected via a cable 805. The terminal device 800 is, for example, a personal computer (PC), and includes a terminal main body 801, a hard disk device (HDD) 802 as storage means, a keyboard 803 as input means, and a display 804 as display means (output means). Have.
[0043]
The terminal main body 801 includes a CPU (Central Processing Unit) 801a as an arithmetic unit and a memory 801b as storage means. The CPU 801a controls the entire terminal device. The terminal body 801 is connected to a hard disk drive 802, a keyboard 803, and a display 804, respectively.
[0044]
The hard disk device 802 has a first personal data file F11 storing a plurality of personal data, a second personal data file F12 also storing a plurality of personal data, and a first IC storing IC command data. A command data file F13, a second IC command data file F14 also storing IC command data, and the like are stored.
[0045]
The card issuing device 810 includes a card reader / writer 806, a card printer 807, a magnetic encoder 808, a card supply unit 811, and a stacker 812. The primary issue IC card 100 set in the card supply unit 811 is sent to the card issuing device 810. The IC card 100 is fetched one by one, the fetched IC card 100 is passed through the card issuing device 810, and then discharged to the card stacker 812.
[0046]
The card reader / writer 806 of the card issuing device 810 exchanges various data with the IC card 100 via the communication unit 102 of the IC card 100. The card reader / writer 806 also magnetically records various data on the magnetic stripe unit 101 of the IC card 100 and reads various data magnetically recorded on the magnetic stripe unit 101.
[0047]
The card issuing device 810 has the following functions [1] to [4].
[0048]
[1] A function of transmitting IC command data sent from the terminal device 800 to the card issuing device 810 to the control element 104 via the communication unit 102 of the IC card 100 (card reader / writer 806).
[0049]
[2] A function of transmitting a response sent from the control element 104 of the IC card 100 from the card issuing device 810 to the terminal device 800 via the communication unit 102 (card reader / writer 806).
[0050]
[3] A function of printing the print data sent from the terminal device 800 to the card issuing device 810 on the surface of the IC card 100 (card printer 807).
[0051]
[4] A function of magnetically recording magnetically encoded data sent from the terminal device 800 to the card issuing device 810 on the magnetic stripe unit 101 of the IC card 100 (magnetic encoder 808).
[0052]
FIG. 14 shows an example of the contents of the first personal data file F11 (second personal data file F12). The first personal data file F11 (second personal data file F12) is composed of, for example, print data and IC command data. In the example of FIG. 14, print data is defined in items 1 and 2, and IC command data is defined in items 3, 4, 5, and 6. That is, as shown in FIG. 14, the kanji name of the card holder (item 1), member number (item 2), credit X member number (item 3), expiration date of service Y (item 4), and service Z It is composed of a record group (personal data group) in which personal data such as a member number (item 5) and a password of the service Z (item 6) are one record.
[0053]
In the example of FIG. 14, for example, “Write Record # 1 000007” is defined as item 5 of personal data 1, and “IC3 = Non (undefined)” is defined as item 5 of personal data 2. .
[0054]
FIG. 15 shows an example of the contents of the first IC command data file F13 (second IC command data file F14). The first IC command data file F13 (second IC command data file F14) includes IC command data transmitted to the IC chip 103 (control element 104) of the IC card 100. In the example of FIG. 15, a DF selection command for selecting credit X is defined as the first command. As the second command, the command of item 3 of the personal data file is defined, and “Write Record # 1 FFFFFF (invalid data writing)” is defined as a process when the command is not defined in the personal data file. As the third command, a DF selection command for selecting service Y is defined. As the fourth command, the command of item 4 of the personal data file is defined, and as a process when the command is not defined in the personal data file, a "service Y-DF deletion command" is defined.
[0055]
As the fifth command, a DF selection command for selecting the service Z is defined. As the sixth command, the command of item 5 of the personal data file is defined, and as a process when the command is not defined in the personal data file, a "service Y-DF deletion command" is defined. As the seventh command, the command of item 6 of the personal data file is defined, and as the eighth command, the issue end command is defined.
[0056]
Next, in such a configuration, an IC card issuing process (secondary issuing process) will be described with reference to a flowchart shown in FIG.
First, the terminal device 800 displays a file name input screen as shown in FIG. 17 on the display 804 (step S301). This file name input screen is provided with an input area E1 for a personal data file name, an issue start button P1, and an end button P2.
[0057]
The operator inputs the file name of the personal data file storing the personal data of the IC card to be issued based on the contents displayed on the display 804, and then clicks the issuance start button P1 to execute the issuing process. Is started and all the processes are ended by clicking the end button P2. That is, when the issuance start button P1 is clicked, the terminal device 800 displays an in-issue processing screen as shown in FIG. 18 on the display 804 (step S302).
[0058]
Upon displaying the in-progress processing screen, the terminal device 800 instructs the card issuing device 810 to take in the IC card 100 (step S303). When the IC card 100 is taken in, the IC command data shown in FIG. The IC command data in the file F13 (F14) is read one by one (step S304).
[0059]
Next, it is confirmed whether or not the read IC command data defines an item of the personal data file F11 (F12) (step S305). The data of the corresponding item of the file is read (step S306). As a result of the confirmation in step S305, if the item of the personal data file is not defined, the data of the IC command data file read in step S304 is transmitted to the IC card 100 (step S307).
[0060]
Next, it is confirmed whether IC command data is defined in the read data (step S308). If IC command data is defined, the IC command data of the personal data file is transmitted to the IC card 100. (Step S309). If the IC command is not defined in the personal data file as a result of the confirmation in step S308, the command in the case where the personal data file is not defined in the IC command data file is transmitted (step S310).
[0061]
Next, it is confirmed whether the processed data is the last command of the IC command data file F13 (F14) (step S311). If the result of this check is that the command is not the last command, the operation returns to step S304 to repeat the above operation. If the command is the last command, the print data of the personal data file F11 (F12) is transmitted to the card issuing device 810, and Printing is performed on the front surface of the card 100 (step S312).
[0062]
Next, it is confirmed whether the processed data is the last print data of the personal data file F11 (F12) (step S313). If it is determined that the print data is not the last print data, the process returns to step S312 to repeat the above-described operation. If the print data is the last print data, an instruction to eject the IC card 100 is issued (step S314).
[0063]
Next, it is confirmed whether the next personal data exists in the personal data file F11 (F12) (step S315). As a result of this check, if there is the next personal data, the process returns to step S303 to repeat the above operation. If there is no next personal data, a normal end screen as shown in FIG. An end button P3 is provided in the normal end screen, and all processing ends when the operator clicks the end button P3.
[0064]
By transmitting the personal data writing command or the DF deletion command to the IC card 100 according to the contents of the personal data file F11 (F12) at the time of the secondary issuance processing, the file structure of each IC card 100 is changed. Can be optimized.
[0065]
FIG. 20 shows an example of a file structure after the issuance of the personal data 1, and FIG. 21 shows an example of a file structure after the issuance of the personal data 2. In the personal data 2, when the service Z is deleted at the time of issuance, a free area is created. When the IC card 100 is distributed to an individual and a new service W starts during use, a file of the new service W is stored in the free area. Since it can be created, it is not necessary to update the IC card.
[0066]
【The invention's effect】
As described in detail above, according to the present invention, at the time of secondary issuance, issuance is performed to satisfy each requirement of the card user, and when a new service starts, the card user is notified of the start of the new service. A card user who wishes to add a new service can provide an IC card and an IC card issuing system that can be easily added by an agency or the like.
[Brief description of the drawings]
FIG. 1 is a block diagram schematically showing a configuration of an IC card according to an embodiment of the present invention.
FIG. 2 is a conceptual diagram of a file structure when a plurality of applications are configured in a data memory.
FIG. 3 is a diagram showing a memory map of a data memory.
FIG. 4 is a diagram for explaining the configuration of DF definition information.
FIG. 5 is a view for explaining the configuration of EF definition information.
FIG. 6 is a diagram showing a configuration of a working memory.
FIG. 7 is a view for explaining the configuration of a DF deletion command.
FIG. 8 is a flowchart illustrating a processing operation when a DF deletion command is received in the IC card.
FIG. 9 is a flowchart illustrating EF deletion processing.
FIG. 10 is a diagram showing a memory map of a data memory for describing a specific example of EF deletion processing.
FIG. 11 is a diagram showing a memory map of a data memory for describing a specific example of EF deletion processing.
FIG. 12 is a diagram showing a memory map of a data memory for describing a specific example of EF deletion processing.
FIG. 13 is a block diagram schematically showing a configuration of an IC card issuing system according to the embodiment of the present invention.
FIG. 14 is a diagram showing an example of the contents of a personal data file.
FIG. 15 is a diagram showing an example of the contents of an IC command data file.
FIG. 16 is a flowchart illustrating IC card issuing processing (secondary issuing processing).
FIG. 17 is a view showing a display example of a file name input screen.
FIG. 18 is a view showing a display example of an issuance processing screen.
FIG. 19 is a view showing a display example of a normal end screen.
FIG. 20 is a view showing an example of a file structure after issuing personal data 1;
FIG. 21 is a diagram showing an example of a file structure after issuing personal data 2;
[Explanation of symbols]
100: IC card, 102: communication unit (communication means), 103: IC chip, 104: control element (CPU), 105: data memory, 106: working memory, 107: program memory, 800: terminal device, 801: terminal Body, 801a CPU, 801b memory, 802 hard disk device (storage means), 803 keyboard, 804 display, 206 card reader / writer, 807 card printing machine, 808 magnetic encoder, 810 card issuing device .., 811... A card supply unit, 812.

Claims (7)

Communication means for transmitting and receiving data to and from an external device;
A memory for storing data,
File construction means for creating a plurality of files for this memory and constructing a file structure;
When the data received via the communication means is a file deletion command, a file search means for searching the memory for a file specified by the file deletion command,
File deletion means for deleting the file searched by the file search means from the memory so that the file can be reused;
An IC card characterized by comprising: The file deletion unit deletes the file searched for by the file search unit by invalidating a file identifier in file definition information for defining the file in the memory so that the file can be reused. The IC card according to claim 1, wherein Communication means for transmitting and receiving data to and from an external device;
A memory for storing data,
A plurality of first files as folders set for each application in the memory, and a plurality of first files located under each of the first files and used for storing data actually used by the application. File construction means for creating a second file and constructing a file structure;
When the data received via the communication means is a file deletion command, a file search means for searching the memory for a first file specified by the file deletion command;
First file deletion means for deleting the first file searched by the file search means from the memory so that the first file can be reused;
A second file deletion unit for deleting the second file located under the first file deleted by the first file deletion unit from the memory so that the second file can be reused;
An IC card characterized by comprising: The first file deletion unit reuses the first file by invalidating a file identifier in file definition information for defining the first file searched by the file search unit in the memory. 4. The IC card according to claim 3, wherein the IC card is deleted so as to be able to be used. The second file deletion unit invalidates a file identifier in file definition information for defining a second file located under the first file deleted by the first file deletion unit in the memory. 4. The IC card according to claim 3, wherein the second file is deleted so that the second file can be reused. An IC card issuing system for issuing an IC card by writing personal data for each application in the IC card having a memory in which a plurality of files are created,
First communication means for transmitting and receiving data to and from an external device; memory for storing data; file construction means for creating a plurality of files in the memory to construct a file structure; When the data received via the means is a file deletion command, the file search means for searching the file specified by the file deletion command from the memory, and the file searched by the file search means can be reused. An IC card comprising a file deletion means for deleting from the memory; a second communication means for communicating via the first communication means;
Personal data storage means for storing a plurality of personal data in advance;
Personal data reading means for reading desired personal data from the personal data storage means;
File issuing / deleting recognizing means for recognizing a file to be issued and a file to be deleted from the personal data read by the personal data reading means;
Issuing command transmitting means for generating an issuing command from the personal data read by the personal data reading means based on the recognition result of the file issuing / deleting recognizing means, and transmitting the command to the IC card via the second communication means; ,
File deletion command transmission means for generating a file deletion command based on the recognition result of the file issue / deletion recognition means and transmitting the file deletion command to the IC card via the second communication means;
An IC card issuing system comprising: An IC card issuing system for issuing an IC card by writing personal data for each application in the IC card having a memory in which a plurality of files are created,
First communication means for transmitting and receiving data to and from an external device; a memory for storing data; a plurality of first files as folders set for each application in the memory; A file construction means for creating a second file, which is located under one file and which is used for storing data actually used by the application, to construct a file structure; and via the first communication means When the received data is a file deletion command, a file search means for searching the memory for a first file specified by the file deletion command, and the first file searched by the file search means is reused. A first file deletion unit for deleting the file from the memory so that the first file deletion unit can delete the file. Via an IC card including second file deletion means for deleting the second file located under the deleted first file from the memory so that the second file can be reused, and via the first communication means. Second communication means for communicating by means of
Personal data storage means for storing a plurality of personal data in advance;
Personal data reading means for reading desired personal data from the personal data storage means;
File issuing / deleting recognizing means for recognizing a file to be issued and a file to be deleted from the personal data read by the personal data reading means;
Issuing command transmitting means for generating an issuing command from the personal data read by the personal data reading means based on the recognition result of the file issuing / deleting recognizing means, and transmitting the command to the IC card via the second communication means; ,
File deletion command transmission means for generating a file deletion command based on the recognition result of the file issue / deletion recognition means and transmitting the file deletion command to the IC card via the second communication means;
An IC card issuing system comprising:

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