JPH01126786A - Ic card having auxiliary memory - Google Patents

Abstract

PURPOSE:To use the area of an auxiliary memory in multipurpose application and efficiently by blocking and controlling an auxiliary memory device. CONSTITUTION:First, an IC chip 11 is notified of a writing request for an auxiliary memory 16. At such a time, logical position information, etc., controlled by a terminal equipment 17 according to the types of writing data are sent as parameters. When the IC ship 11 receives the request, it refers to an auxiliary memory control information storing part 13, searches the physical position of a block to which data is written, and notifies the terminal equipment 17 of the control information such as the physical position of the block. According to the notified control information, at the terminal equipment 17, the desired data is written in the auxiliary memory 16 by an auxiliary memory reader/ writer 19. In addition, in the case of the reading request for the auxiliary memory 16, approximately the same process is carried out.

Description

[Detailed Description of the Invention] [Summary] This invention relates to an IC card having an auxiliary memory that is a combination of an IC card equipped with an IC chip and an auxiliary storage device such as an optical memory that is physically independent of the IC chip.

The purpose of this invention is to block the auxiliary memory of an IC card so that it can be efficiently managed, and to make the area of this auxiliary memory multipurpose for various uses of the IC card.

The IC card is provided with auxiliary storage in which an area where data is written and read by an external device is divided into blocks, and is also provided within the memory.

comprising an auxiliary storage management information storage unit that stores management information regarding the auxiliary storage, and when an external device accesses the auxiliary storage, searches the auxiliary storage management information storage unit in response to a request from the external device; The apparatus is configured to include an auxiliary storage access management section that notifies management information necessary for accessing the corresponding auxiliary storage.

[Industrial application field]

The present invention relates to an IC card equipped with an IC chip.

This IC card relates to an IC card having an auxiliary memory in which the IC chip is combined with a physically independent auxiliary memory such as an optical memory.

IC cards equipped with IC chips are being put into practical use. Such an IC card has a wide range of applications other than financial cards, and it is desired that one IC card can be used for multiple purposes.

[Prior art and its problems]

A conventional IC card has a processor and a memory of one or two chips, and the IC chips are arranged so that their external terminals are at predetermined positions. As this memory, for example, an EEPROM or the like is used.

IC cards have a built-in processor and memory, so
It can be highly functionalized and multi-functional, and its use is being considered in many fields, including fields where security is required.

However, when using an IC card for various purposes, there is a problem in that the memory capacity is limited and a large amount of data, such as image data, cannot be stored in the memory.

Therefore, in order to store a large amount of data within the IC card, the inventors of the present invention are considering mounting an auxiliary memory such as an optical memory, which is independent of the IC chip, on the IC card. In this case, to be able to use that auxiliary memory efficiently, and also.

When using the IC card for multiple purposes, it is desirable to be able to guarantee independence in the use of auxiliary memory in each of the three services and to be able to prevent unauthorized reading to some extent.

The present invention aims to solve the above-mentioned problems by dividing the auxiliary memory of an IC card into blocks so that it can be efficiently managed, and also allows the area of this auxiliary memory to be used for multiple purposes for various uses of the IC card. It is intended to be.

[Means for solving problems]

FIG. 1 is a diagram explaining the principle of the present invention.

In FIG. 1, 10 is an IC card, and 11 is an IC chip that includes a processor, memory, etc.

12 is a memory such as an EEPROM; 13 is an auxiliary memory management information storage unit that stores block position information of the auxiliary memory;
4 is an auxiliary storage access management unit; 15 is a management information notification processing unit that notifies the terminal device of management information necessary for accessing the auxiliary storage; 16 is capable of writing and reading data by magnetic means or optical means, etc. Auxiliary memory that has become.

17 is a terminal device that handles the IC card 10; 18 is an IC
An IC card interface 19 has a communication function with the card 10, and 19 represents an auxiliary storage reader/writer that inputs and outputs data to and from the auxiliary storage 16.

In the present invention, in order to compensate for the insufficient capacity of the memory 12 in the IC card 10, an auxiliary memory 16 is provided in which data can be written and read by the auxiliary memory reader/writer 19 of the terminal device 17. The auxiliary memory 16 is constituted by an optical memory in which data is written and read using, for example, a laser beam, but it may also be one that is accessed via a magnetic head. The storage area of the auxiliary storage 16 is divided into blocks when the auxiliary storage 16 is initialized or when data is written. This block is the access or management unit for the jd area.

The memory 12 is a memory that can be accessed by the processor in the IC chip 11, and in the present invention, an auxiliary storage management information storage unit 13 is provided therein. The auxiliary storage management information storage unit 13 is configured to store management information including block position information regarding the auxiliary storage 16 that has been divided into blocks.

The auxiliary storage reader/writer 19 inputs and outputs data to and from the auxiliary storage 16, and the area management information and the like required for access are stored in the auxiliary storage management information storage section 13. Therefore, the terminal device 17 uses the IC card interface 18.

It issues an access request to the IC chip 11 and receives its management information from the RC chip 11. In order to process the request, an auxiliary storage access management section 14 is provided, and when there is an access request, the auxiliary storage access management section 14 performs a qualification check as necessary, and the management information notification processing section 15 handles the request. Management information for access is notified via the IC card interface 18.

[Effect]

When the terminal device 17 accesses the auxiliary memory 16, communication with the IC chip 11 is performed, for example, as shown in (1) to (2) shown in FIG. 1(B).

(2) Notify the IC chip 11 that there is a write request to the auxiliary memory 16.

At this time, depending on the type of write data.

Logical position information managed by the terminal device 17 is sent as a parameter.

■ If the IC chip 11 accepts the request,
Refer to the auxiliary storage management information storage section 13.

Search for the physical location of the block to write data to.

(2) Management information such as the physical location of the block is then notified to the terminal bag W17.

(2) The terminal device 17 writes desired data into the auxiliary memory 16 using the auxiliary memory reader/writer 19 shown in FIG. 1(A) according to the management information received.

(2) Furthermore, in the case of a read request to the auxiliary storage 16, the terminal device 17 similarly notifies the rc chip 11 of logical position information and requests management information.

(2) The IC chip 11 searches the auxiliary storage management information storage section 13.

(2) Management information such as the physical location of the block to be read is then notified to the terminal bag W17.

(2) The terminal device 17 reads desired data from the auxiliary memory 16 using the auxiliary memory reader/writer 19 shown in FIG.

As described above, the auxiliary memory 16 is divided into blocks.

Since the IC chip 11 manages the area management information, the area of the auxiliary memory 16 can be used efficiently for two different purposes. Also, when the terminal device 17 uses data on the auxiliary storage 16.

Even if the data is simply read sequentially from the beginning of the auxiliary memory 16 (the data can be physically read), it cannot be recognized as data with logical meaning, so it cannot be used and it cannot be used fraudulently. It also prevents its use.

〔Example〕

FIG. 2 is an external view of an embodiment of the present invention, FIG. 3 is an explanatory block diagram of the embodiment of the present invention, and FIG. 4 is an illustration of an application example of the present invention.

The IC card 10 according to the present invention is provided with an auxiliary memory 16 in addition to the IC chip 11, for example, as shown in FIG. This auxiliary memory 16 is, for example, an optical memory accessed by laser light. Of course, something like magnetic tape may also be used, although its recording capacity is inferior.

When the area of the auxiliary storage 16 is not blocked, that is, when used format-free, only a series of data is allowed to be stored in the entire area.

In this embodiment, the auxiliary memory 16 is divided into blocks of a predetermined size (which may be variable) at the time of initial setting or data writing, for example, as shown in FIG. It is kept as an auxiliary storage directory 31 in the area.

Access to this auxiliary storage directory 31 is as follows:
This is performed by the auxiliary storage access management unit 14 executed by the processor (CPU) 30 in the IC chip.

In the block-shaped auxiliary memory 16, various data such as photos, audio, fingerprints, etc. are stored in each block B1. B2. B3. It is stored in...

The auxiliary storage directory 31 has management information including physical location information for these data.

Next, a specific application example of the present invention will be explained with reference to FIG. Note that fal~(k) in the following explanation corresponds to (al~(kl) shown in FIG. 4. In the interface between the IC card 10 and the terminal device 17 in FIG. 4, C is a command block, and R is the response
represents a block.

fel By inserting the IC card 10 into the terminal device 17, processing of the terminal device 17 starts. The terminal device 17 is
First, write the reset request command block to IC card 1.
Send to 0. In response to this, the IC card IO side executes a reset process for the system directory/system information 40, etc., and returns a response indicating that the reset is complete.

(bl Next, enter your personal identification number (PIN) data,
Input from N pad 41. The terminal device 17 is.

Set the input PIN data in the command block,
Make a PIN verification request. On the IC card 10 side, PIN verification processing is executed using the PIN management information 42 registered in advance. and.

Returns the matching result as a response block.

(If the CIPINs do not match, it will be treated as an error, and if the PINs match, a secondary card authentication (AC) request will be made.I
On the other hand, on the C card 10 side.

According to the card issuer's ID management information 43, the card AC
Refer to the management information 44 and return card AC data.

(If the authentication of the dl card is OK, a file open request to be processed is made. On the IC card 10 side, in response to this request, the system AC management information 46 is sent according to the ID management information 45 compatible with the application program (APL). Check the access authority, etc., and notify the processing results.

fel In the terminal device 17, 2, for example, as preprocessing when writing data to the auxiliary storage 16.

A write request (LWritel) to the auxiliary memory 16.

Send in a command block along with write data. In this embodiment, the data to be written to the auxiliary memory 16 is encrypted, and the IC card 10 encrypts the requested data using one predetermined cryptographic management information 47. The processing result, encrypted data, and writing position information are sent as a response block.

(f) The terminal device 17 writes the encrypted data to the designated write position in the auxiliary storage 16.

(As a post-processing of writing to the phantom auxiliary memory 16.

A command block (L Wr
ite2) and send it to the IC card 10.

In the rc card IO, the result information is reflected in the auxiliary storage management file. In the embodiment shown in FIG. 4, the auxiliary storage management information storage unit 13 shown in FIG. 1 is realized by an auxiliary storage management file 48. The auxiliary storage management file 48 is
This is a memory file managed in a directory 49.

Then, the processing result is notified.

In the case of reading from the auxiliary memory 16, as in the case of writing, the terminal device 17 issues a read request (L Readl) from the auxiliary memory 16 as preprocessing.
Specify the file name to read, and use the command
Send in blocks. On the other hand, on the IC card 10 side,
The auxiliary storage management file 48 is referred to and the block position information of the specified file is extracted. The processing result and position information are sent as a response to the terminal device 17.

+11 The terminal device 17 reads the encrypted data from the auxiliary storage 16 on the IC card 10 according to the position information notified from the IC card 10 side.

(J) Regarding the encrypted data read out afterwards.

For decoding request, command block (LRead2
) and send it to the IC card 10 along with the encrypted data. The IC card 10 performs decryption processing according to the encryption management information 47. The decoding method data is returned in a response block. The terminal device 17 then executes processing according to the decoding method data.

(kl) When the data processing is completed, the terminal device 17 requests the file closing process performed in process (d). In response to this request, the IC card 10 side executes the file closing process and The processing result is returned in a response block. When all processing is completed, the terminal device I7 ejects the IC card 10.

〔Effect of the invention〕

As explained above, according to the two aspects of the present invention, auxiliary storage can be managed in blocks and used efficiently. Multiple services independently share one area of auxiliary storage.
It can be used individually and can be used for multiple purposes.

[Brief explanation of the drawing]

FIG. 1 is a diagram explaining the principle of the present invention. FIG. 2 is an external view of one embodiment of the present invention. FIG. 3 is a block explanatory diagram according to an embodiment of the present invention. FIG. 4 shows an example of application of the present invention. In the figure, 10 is an IC card, and 11 is an IC chip. 12 is a memory, and 13 is an auxiliary storage management information storage unit. 14 is an auxiliary storage access management section, 15 is a management information notification processing section, 16 is an auxiliary storage, and 17 is a terminal device. 18 represents an IC card interface, and 19 represents an auxiliary storage reader/writer.

Claims (1)

[Claims] In an IC card equipped with an IC chip, an auxiliary memory (1 block) is provided on the IC card in which an area where data is written and read by an external device is divided into blocks.
6) and an auxiliary storage management information storage unit (13) for storing management information including at least block position information regarding the auxiliary storage in a memory accessible by the processor in the IC chip, and When the auxiliary storage is accessed by an external device, the IC chip searches the auxiliary storage management information storage unit in response to a request from the external device, and notifies the management information necessary for accessing the corresponding auxiliary storage. An IC card having an auxiliary memory, characterized in that it includes an auxiliary memory access management section (14).