JP2000113121A - Portable electronic equipment and method for initializing portable electronic equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a supply destination to easily and also surely perform initialization only by notifying an initialization command to the supply destination by storing initialization data stored in a program memory in an initial data area of a program memory when a deciding means decides an uninitialized state. SOLUTION: When a control element 14 receives an initialization command supplied from a terminal through a card reader/writer, the control element 14 first reads data in an initial data area of a data memory 15 and judges whether or not it is uninitialized. When it consequently judges that it is uninitialized, the control element 14 reads initialization data of an initialization data area 17, discriminates a BBC according to the length information of a data string of the read initialization data and decides whether or not the initialization data is proper according to BBC contents. When the initialization contents are judged as proper, the control element 14 writes the initialization data of the area 17 of a program memory 16 in the data area of the data memory 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a portable electronic device such as an IC card having a nonvolatile memory and a method of initializing the portable electronic device for initializing the portable electronic device.

[0002]

2. Description of the Related Art Conventionally, in an IC card as a portable electronic device, operating conditions and security conditions are determined by writing initial data into a nonvolatile memory at the time of manufacturing. At this time, initial data is written by transmitting data to be written to the IC card using a write command.

However, when supplying an uninitialized card as a product, it is necessary to notify the other party of the initialization data, and the initialization data appears to the outside, and a third party may obtain data. There is.

In this case, when a third party obtains the data, the card can be initialized by falsifying the write data or the like, and there is a drawback that a security problem occurs.

Therefore, when supplying an uninitialized IC card as a product, there is a demand for a high security IC card which can easily and reliably initialize the IC card simply by notifying the initialization command to the supply destination. Have been.

[0006]

SUMMARY OF THE INVENTION According to the present invention, when an uninitialized portable electronic device is supplied as a product, the portable electronic device can be easily and reliably supplied only by informing the supply destination of an initialization command. There is a demand for a highly secure device that can initialize the device. When supplying an uninitialized portable electronic device as a product, simply supplying the initialization command to the destination makes it easier and more reliable. It is an object of the present invention to provide a highly secure portable electronic device capable of initializing the portable electronic device and a method of initializing the portable electronic device.

[0007]

A portable electronic device according to the present invention includes a data memory having an initial data area for storing initialization data and a user data area for storing user data, a control program, and an initialization program. A program memory in which data is stored, a control element for controlling reading / writing of data from / to the data memory and reading of data from / to the data memory based on an instruction from an external device and a control program of the program memory; A determination unit configured to determine whether or not an uninitialized state is determined based on whether or not uninitialized data is stored in an initial data area of the program memory when an initialization command is supplied from the external device; When the uninitialized state is determined by the determining unit, the initialization stored in the program memory is performed. The chromatography data comprising a storage means for storing the initial data area of the program memory.

A portable electronic device according to the present invention has a data memory having an initial data area for storing initialization data and a user data area for storing user data, a control program and initialization data. A program memory, a control element for controlling reading / writing of data from / to the data memory, and reading / reading of data from the program memory based on a command from the external device and a control program of the program memory, and initialization from the external device First determining means for determining whether or not uninitialized data is stored in the initial data area of the program memory when an instruction is supplied, based on whether or not uninitialized data is stored; When the initialization instruction is supplied, the initialization data stored in the program memory is correct. A second determination means for determining whether to determine an uninitialized state by the first determination means,
And a storage means for storing the initialization data stored in the program memory in the initial data area of the program memory when the second determination means determines that the initialization data is correct.

A portable electronic device according to the present invention has a data memory having an initial data area for storing initialization data and a user data area for storing user data, a control program and initialization data. A program memory, a control element for controlling reading / writing of data from / to the data memory, and reading / reading of data from the program memory based on a command from the external device and a control program of the program memory, and initialization from the external device When the instruction is supplied, the uninitialized data is indicated in the initial data area of the program memory. "
First determining means for determining whether or not the memory is in an uninitialized state based on whether or not "FF" is stored; and storing the information in the program memory when an initialization instruction is supplied from the external device. A second determining means for determining whether or not the initialization data is correct; an uninitialized state determined by the first determining means; and a determination that the initialized data is correct by the second determining means. Storage means for storing initialization data stored in the program memory in an initial data area of the program memory.

A portable electronic device according to the present invention has a data memory having an initial data area in which initialization data is stored and a user data area in which user data is stored; A program memory for storing initialization data to which a check code is added, a control program, and reading / writing data from / to the data memory based on an instruction from an external device and a control program for the program memory; The control element that controls the reading of data from the program memory, and whether an uninitialized data is stored in the initial data area of the program memory when an initialization command is supplied from the external device, First determining means for determining whether or not the apparatus is in an initialization state; When the initialization data stored in the program memory is correct, whether the initialization data is correct or not is determined by the data length assigned to the leading end of the initialization data and the trailing end portion of the initialization data based on this data length. A second judging means for judging the uninitialized state by the first judging means, and judging that the initialization data is correct by the second judging means. Storage means for storing initialization data stored in the program memory in an initial data area of the program memory.

A portable electronic device according to the present invention has a data memory having an initial data area for storing initialization data and a user data area for storing user data, a data length at a leading end, and a data length at a trailing end. A program memory for storing initialization data to which a check code is added, a control program, and reading / writing data from / to the data memory based on an instruction from an external device and a control program for the program memory; Whether a control element that controls reading of data from the program memory and “FF” indicating uninitialized data are stored in the initial data area of the program memory when an initialization command is supplied from the external device. First judging means for judging whether or not it is in an uninitialized state,
When an initialization command is supplied from the external device, whether or not the initialization data stored in the program memory is correct is determined by the data length given to the leading end of the initialization data and this data length. A second determining means for determining based on a check code given to a rear end portion of the initialization data; an uninitialized state determined by the first determining means; and an initialization performed by the second determining means. Storage means for storing initialization data stored in the program memory in an initial data area of the program memory when the data is determined to be correct.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the overall configuration of an IC card processing device 1 for processing an IC card 2 according to the present invention.

The IC card processing device 1 is provided with a terminal 3 for controlling the entire device. The terminal 3 enables connection between the IC card 2 and the terminal 3, a card reader / writer 4 for exchanging data with the IC card 2, a keyboard 5 for inputting commands and other data, and a CRT for displaying various data. A display 6, a printer 7 for printing and outputting various data, and a floppy disk device 8 for storing various data are connected respectively. The card reader / writer 4 exchanges data with the IC card 2 by a contact type such as a connector or a wireless type using an antenna.

FIG. 2 is a block diagram schematically showing the function of the IC card 2. That is, the IC card 2 includes a part for executing basic functions such as a reader / writer unit 11, a password setting / password collation unit 12, and an encryption / decryption unit 13, and a supervisor 14 for managing these basic functions. ing.

The reader / writer 11 is connected to the terminal 3
It reads and writes data from a data memory 15 or a program memory 16, which will be described later, based on commands, data, and the like supplied from the PC via the card reader / writer 4.

The password setting / password collation unit 12 sets a password and verifies the password.

The encryption / decryption unit 13 is provided with the terminal 3
It encrypts the data supplied to the terminal 3 and decrypts the encrypted data supplied from the terminal 3.

The supervisor 14 interprets and executes a function code supplied from the terminal 3 via the card reader / writer 4 or a function code to which data is added.

As shown in FIG. 3, the IC card 2 is provided with a control element
, A data memory 15 and a program memory 16.

The data memory 15 is used for storing various data and is composed of an EEPROM. The program memory 16 is configured by a mask ROM, and stores a control program and initialization data in advance. The initialization data has an arbitrary predetermined number of bytes, and is stored in the initialization data area 17.

FIG. 4 is a diagram showing a configuration of the data memory 15. That is, the data memory 15 includes two areas: an initialization data area 15a and a user data area 15b. The initialization data area 15a includes initial values of fixed data and variable data that are essential for the operation of the IC card 2. The initialization data stored in the initialization data area 17 of the program memory 16 may be all or a part of the initial values of the fixed data and the variable data stored in the initialization data area 15a. The user data area 15b is an area that the card user (user) can freely use.

The initialization data stored in the initialization data area 17 will be described with reference to FIG. That is, the initialization data includes the length information of the entire data string of the initialization data, the area definition information in the memory, the serial number, the initial value of the random number used for encryption / decryption, and the writing to the user data area 15b. It is composed of key data to be executed, a BCC (block check character) as a check code for the entire data string, and the like.

The length information of the data string is arranged at the beginning (front end) of the initialization data, and the BCC is arranged at the end (rear end) of the initialization data. BCC is, for example, 1
Byte (16 bits) configuration, BCC from the beginning of data
Code for checking whether the result of adding each bit of the data string up to the point before the byte unit and the value of each corresponding bit of the BCC match (whether the calculation result of the BCC is correct) It is.

The control element 14 includes the data memory 1
5, the data of all or a part of the area in the initial data area 15a is read, and whether or not the data of each byte unit of the data is all “FF” (all the bits are “1”) is determined. It is determined whether or not initialization is performed (whether or not initialization data is written). That is, 'F
If it is F ', it is determined that it has not been initialized, otherwise it is determined that it has been initialized.

The control element 14 reads the initialization data in the initialization data area 17, determines the BCC based on the length information of the data string of the read initialization data, and determines the contents of the determined BCC and the initialization. BC from beginning of data
By checking whether or not the contents of the data string up to the point before C match, it is determined whether or not the initialization data is valid (correct).

The control element 14 determines that the initialization has not been performed and, when determining that the initialization data is valid,
The initialization data in the initialization data area 17 is stored (written) in the initialization data area 15a of the data memory 15.

When the control element 14 determines that the initialization has been completed, it returns an initialized status to the terminal 3,
When it is determined that the initialization data is not valid, the terminal 3
A normal termination status is returned to the terminal 3 after the storage of the initialization data in the initial data area 15a of the data memory 15 is completed.

Next, the initialization process of the IC card 2 in the above configuration will be described with reference to the flowchart shown in FIG.

First, when the control element 14 receives the initialization command supplied from the terminal 3 via the card reader / writer 4 (ST1), all or one of the data in the initial data area 15a of the data memory 15 is read. The data in the area is read, and whether or not the data in each byte unit of the data is all “FF” (all the bits are “1”) is determined as to whether the data is uninitialized (initialized data is written). Is determined (ST2).

As a result, when it is determined that the data is all “FF” and not initialized, the control element 14 reads the initialization data in the initialization data area 17 and reads the data string of the read initialization data. BCC is discriminated based on the length information, and it is checked whether or not the contents of the discriminated BCC and the contents of the data string from the beginning of the initialization data to the position immediately before the BCC match. (ST3).

As a result, when the control element 14 determines that the initialization data is valid, the control element 14 converts the initialization data of the initialization data area 17 of the program memory 16 into the data area 15a of the data memory 15, as shown in FIG. (ST4).

After completion of the writing, the control element 14 returns a normal end status to the terminal 3 (ST5).

If it is determined in step 2 that the data is other than 'FF' and has been initialized, the control element 14 outputs an initialized status to the terminal 3 (ST6).

If it is determined in step 3 that the initialization data is not valid, the control element 14 outputs an initialization data abnormal status to the terminal 3 (ST 3).
7).

As described above, when an uninitialized IC card is supplied as a product, initialization can be performed only by informing the supply destination of an initialization command.

Thus, initialization can be performed easily and reliably.
High safety.

Further, since it is only necessary to write the contents of the program memory to the data memory, the processing time for initialization can be reduced.

[0039]

As described in detail above, according to the present invention, when supplying an uninitialized portable electronic device as a product, the supply destination can be easily and simply supplied with an initialization command. A highly secure portable electronic device and a method for initializing the portable electronic device that can securely initialize the portable electronic device can be provided.

[Brief description of the drawings]

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

FIG. 2 is a block diagram schematically showing functions of the IC card.

FIG. 3 is a block diagram schematically showing a configuration of an IC card.

FIG. 4 is a diagram showing a configuration of a data memory.

FIG. 5 is a diagram for explaining initialization data.

FIG. 6 is a flowchart for explaining an IC card initialization process.

FIG. 7 is a view for explaining a process of writing initialization data in an initialization data area of a program memory to a data memory;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... IC card processing apparatus 2 ... IC card 3 ... Terminal 4 ... Card reader / writer 11 ... Reader / writer 14 ... Control element 15 ... Data memory 15a ... Initial data area 15b ... User data area 16 ... Program memory 17 ... Initialization Data area

Claims (10)

[Claims] A data memory having an initial data area in which initialization data is stored and a user data area in which user data is stored; a program memory in which a control program and initialization data are stored; A control element for controlling the reading / writing of data from / to the data memory and the reading of data from / from the program memory based on the instruction and the control program of the program memory, and when an initialization instruction is supplied from the external device. Determining means for determining whether or not uninitialized data is stored in an initial data area of the program memory, based on whether or not uninitialized data is stored; and The initialization data stored in the program memory is stored in the initial data Portable electronic device characterized by being provided with storage means for storing the A, a. 2. A data memory having an initial data area in which initialization data is stored and a user data area in which user data is stored; a program memory in which a control program and initialization data are stored; A control element for controlling the reading / writing of data from / to the data memory and the reading of data from / from the program memory based on the instruction and the control program of the program memory, and when an initialization instruction is supplied from the external device. First determining means for determining whether or not uninitialized data is stored in the initial data area of the program memory to determine whether or not the device is in an uninitialized state; and receiving an initialization command from the external device. A second determination for determining whether the initialization data stored in the program memory is correct. And determining the uninitialized state by the first judging means, and when the second judging means judges that the initialization data is correct, the initialization data stored in the program memory to the A portable electronic device, comprising: a storage unit for storing in an initial data area of a program memory. 3. A data memory having an initial data area in which initialization data is stored and a user data area in which user data is stored; a program memory in which a control program and initialization data are stored; A control element for controlling the reading / writing of data from / to the data memory and the reading of data from / from the program memory based on the instruction and the control program of the program memory, and when an initialization instruction is supplied from the external device. First determining means for determining whether or not an uninitialized state is present, based on whether or not “FF” indicating uninitialized data is stored in an initial data area of the program memory; Determines whether the initialization data stored in the program memory is correct when an instruction is supplied A second judging means, and an uninitialized state is judged by the first judging means, and when the initialized data is judged to be correct by the second judging means, it is stored in the program memory. Storage means for storing initialization data in an initial data area of the program memory. 4. A data memory having an initial data area in which initialization data is stored and a user data area in which user data is stored, a data length is given at a leading end, and a check code is given at a trailing end. A program memory storing initialization data and a control program; reading / writing data from / to the data memory based on an instruction from an external device and a control program of the program memory; reading data from / from the program memory And a control element for controlling whether the uninitialized state is determined based on whether uninitialized data is stored in an initial data area of the program memory when an initialization command is supplied from the external device. First determining means for determining, and when the initialization command is supplied from the external device, the program Whether or not the initialization data stored in the initialization data is correct is determined by the data length given to the leading end of the initialization data and the check code given to the trailing end of the initialization data based on this data length. A second judging means for judging; and an uninitialized state judged by the first judging means, and when the initialized data is judged to be correct by the second judging means, stored in the program memory. Storage means for storing initialization data in an initial data area of the program memory. 5. A data memory having an initial data area in which initialization data is stored and a user data area in which user data is stored, a data length is given at a leading end, and a check code is given at a trailing end. A program memory storing initialization data and a control program; reading / writing data from / to the data memory based on an instruction from an external device and a control program of the program memory; reading data from / from the program memory And a control element for controlling the non-initialization, when the initialization instruction is supplied from the external device, whether or not "FF" indicating the uninitialized data is stored in the initial data area of the program memory is determined. First determining means for determining whether the state is the state or not, and when an initialization command is supplied from the external device, Whether the initialization data stored in the program memory is correct or not is determined by a data length given to the leading end of the initialization data and a check code given to the trailing end of the initialization data based on this data length. And a second determining means for determining the uninitialized state by the first determining means, and when the second determining means determines that the initialized data is correct, the data is stored in the program memory. Storage means for storing the initialization data in the initial data area of the program memory. 6. A data memory having an initial data area for storing initialization data and a user data area for storing user data, a program memory for storing a control program and initialization data, and A portable electronic device having a control element for controlling reading / writing of data from / to the data memory and reading / reading of data from / to the program memory based on the instruction of (1) and the control program of the program memory; When an instruction is supplied, it is determined whether or not uninitialized data is stored in the initial data area of the program memory. The initialization data stored in the program memory is stored in the initial data area of the program memory. Initialization method for a portable electronic device that stores, characterized in that the. 7. A data memory having an initial data area for storing initialization data and a user data area for storing user data, a program memory for storing a control program and initialization data, A portable electronic device having a control element for controlling reading / writing of data from / to the data memory and reading / reading of data from / to the program memory based on the instruction of (1) and the control program of the program memory; When the instruction is supplied, it is determined whether or not uninitialized data is stored in the initial data area of the program memory. To determine whether the initialization data stored in the program memory is correct Judging the uninitialized state and, when judging that the initialization data is correct, stores the initialization data stored in the program memory in an initial data area of the program memory. To initialize a portable electronic device. 8. A data memory having an initial data area in which initialization data is stored and a user data area in which user data is stored; a program memory in which a control program and initialization data are stored; A portable electronic device having a control element for controlling reading / writing of data from / to the data memory and reading / reading of data from / to the program memory based on the instruction of (1) and the control program of the program memory; When an instruction is supplied, it is determined whether or not an uninitialized state is present, based on whether or not “FF” indicating uninitialized data is stored in the initial data area of the program memory. When the initialization instruction is supplied, the initialization data stored in the program memory is correct. Judge whether or not the uninitialized state is determined, and if it is determined that the initialization data is correct, the initialization data stored in the program memory is stored in an initial data area of the program memory. A method for initializing a portable electronic device. 9. A data memory having an initial data area in which initialization data is stored and a user data area in which user data is stored, a data length is given at a leading end, and a check code is given at a trailing end. A program memory storing initialization data and a control program; reading / writing data from / to the data memory based on an instruction from an external device and a control program of the program memory; reading data from / from the program memory And a control element for controlling the operation of the external memory. When an initialization instruction is supplied from the external device, whether or not uninitialized data is stored in an initial data area of the program memory is determined. Determines whether the device is in the initialization state, and when an initialization command is supplied from the external device, Whether the initialization data stored in the program memory is correct or not is determined by a data length given to the leading end of the initialization data and a check code given to the trailing end of the initialization data based on this data length. When the uninitialized state is determined, and when it is determined that the initialization data is correct, the initialization data stored in the program memory is stored in an initial data area of the program memory. A method for initializing a portable electronic device, comprising: 10. A data memory having an initial data area in which initialization data is stored and a user data area in which user data is stored, a data length is given at a leading end, and a check code is given at a trailing end. A program memory storing initialization data and a control program; reading / writing data from / to the data memory based on an instruction from an external device and a control program of the program memory; reading data from / from the program memory In the portable electronic device having a control element for controlling the operation, when an initialization command is supplied from the external device, whether "FF" indicating uninitialized data is stored in the initial data area of the program memory It is determined whether the device is in the uninitialized state or not, and an initialization command is supplied from the external device. When the initialization is performed, whether or not the initialization data stored in the program memory is correct is assigned to a data length assigned to a leading end of the initialization data and a trailing end portion of the initialization data based on the data length. The initialization code stored in the program memory is initialized by determining the uninitialized state and determining that the initialization data is correct. A method for initializing a portable electronic device, wherein the method is stored in an area.