JPS62102388A - Ic card - Google Patents

Abstract

PURPOSE:To improve the security of an IC card by providing a function which determines processing contents based on the combination of matching results of >=2 passwords. CONSTITUTION:The IC card 10 has an MPU 11 and a memory 12 internally and is equipped with a terminal for connecting with a terminal equipment 2. The terminal equipment 2 for using the IC card 10 connects with a read writer 3 for communication with the IC card 10, a keyboard 4 for giving operation commands, etc., to the IC card 10, and a display 5 where various pieces of information are displayed. The memory 12 of the IC card 10 has >=2 passwords and the MPU 11 determines processing contents based on the combination of matching results of those passwords.

Description

[Detailed description of the invention] [Technical field of invention] The present invention relates to an IC card having a verification function.

[Technical background of the invention and its problems]

Conventionally, when using an IC card, a password (or PIN number. Hereinafter, a password with the same function will be referred to as a password at Mokume J4F). make use of.

Are you the correct user? Check line 7. C I'm worried.

For example, as shown in Figure 4, the entered password is compared with the password stored in the IC card, and if the two match, the user is deemed to be a legitimate user and the prescribed process is performed. There are known systems that have a matching function that determines an error if the two do not match.

However, in such a system, multiple files (e.g. bank file, credit file, medical file) can be stored on one IC card? If it is installed, all files will be unable to be opened with one password,
The contents of the file can be viewed by anyone other than the person concerned, the security level is only a matter of time, and unauthorized use is common.

Also, as shown in Figure 5, the above drawbacks? To resolve it. Set two or more passwords.

Perform a certain process 7. C sea urchin has two or more no《sword h''
-Systems that require all verification and matching
'-I'm looking for suggestions.

Like this 7. In the C system, although the security is improved to some extent, the IC card cannot be operated unless all passwords match.

There are many cases where the card is inconvenient and filled with soil.

[Purpose of the invention]

Therefore, an object of the present invention is to provide an IC card that not only has high security and is extremely difficult to use illegally, but also is extremely convenient to use.

[Summary of the invention]

To achieve the above objectives 7. c′:! The present invention is an IC card having two or more passwords and having a function of determining processing contents based on a combination of the verification results of the passwords.

[Details of the invention]

The present invention will be explained in detail below with reference to the drawings.

FIG. 1 is an explanatory diagram of an IC card according to the present invention.

The IC card (10) incorporates 1 MPU (microprocessor unit) (11) and a memory +121, and is provided with a terminal (contact or non-contact) for connection to a terminal device to be described later.

On the other hand, like this 7. The terminal device (2) for using the cLC card 10) includes [a reader/writer +3 for communicating with the C card tlo+], a keyboard (4) for giving operation commands etc. to the C card (10), and Various information? A display (5) for display is connected. Further, the terminal equipment [1tdO] is connected to a host computer (1) as a central f511 control device.

The MPU of the IC card 110+ (1υ includes a ROM for storing processing programs, R to M for temporarily storing data, and a CPU that performs calculations and control according to the processing programs, and the memory α2 includes an ultraviolet ray Erasable PROM, EEPROM, and RAM with battery backup can be used.

In the EC card of the present invention, for example, as shown in FIG. 2, the ``+1'' program h--is stored in the ROhi of the MPU, and the collation operation and file upload operation are performed.

The program shown in FIG. Enter each password fiQ from the keyboard (4).The entered password is sent to the MPU (l) of the LC card (10) via the reader/writer (3).
Entered into υ h6. First, the first password R is compared with the first password R stored in the IC card. The result of password verification is stored in the register of h'-MPU.1
Next, compare the second password Q with the second password Q that is also stored in the IC card, and the comparison result will be MR.
stored in other registers of U.

Next, check the combination of the verification results of the first password and the second password, and if both passwords match, execute any processing on the file stored in the memo IJ t12). If one of the passwords is correct, only the data in the file can be read.

Will an error be displayed if both are incorrect? By providing this kind of function, which terminates the process by
- )" ?User password and system password, it is impossible for each person who has the password to write data, /l!!, etc. on line 7e5 at the same time. The above processing can be performed only when an operation is performed on the card, and unauthorized rewriting of data can be prevented.

the user or system provider owns.

Or, if you want to check the contents of a user's files on your system, you can do it alone at any time.

Also, is the EC card according to the present invention processed in seven steps as shown in FIG. It is possible to execute h″.

Figure 6 shows a 7-step collation and file management program that allows you to identify and open files when multiple files of different types are stored in the memory of one C card. There is.

The system provider (in this case, the bank for the bank file, the credit company for the credit file, etc.) uses the system (as a password for identifying files by file). , -j)-)"'--Ther is IC
C card operation Sonosward S? It is input from the keyboard (4), sent to the MPU of the card (uO), and collation processing is performed 7 times.

By kneading, you can enter a file corresponding to the regular password (for example, file identification password t).
h'-T, if T1 corresponds to file A, only file A is opened, and no other files can be read or written in one step. Furthermore, if only one of the passwords matches, according to 7, only reading of the file is possible.

Therefore, in this case, even if you store different files on one card, will it only contain the desired file? It is possible to open the file in the oven, provide high security, and easily access the file d4.

In addition to the above example, you can also use two or more passwords and process the content according to the combination. Confirmation can be done arbitrarily.

[The young fruits of invention]

According to the present invention described above, it is possible to achieve excellent effects such as first order.

That is, it is possible to set a plurality of different files in the memory of the IC card, and it is also possible to prevent intrusion into the different file area by setting a unique password for each of the files. , security is improved and unattended use can be prevented.

Able to read, write, erase data, etc.1
human? However, it is possible to improve the confidentiality of IC cards and improve the convenience of system operation.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of an IC card according to the present invention. 2 and 6 are flowcharts of a program for verification and file management, and FIGS. 4 and 5 are flowcharts of a conventional program for verification and file management. (10)... [C Card old)...MPUu2
...Memory ° Patent applicant Representative Toppan Printing Co., Ltd. Aio Suzuki 4t 5 7-1; Numa Yabu Hiyaka Kuma Procedure Ne City Official Book (Method) February 27, 1986

Claims (1)

[Claims] An IC card having two or more passwords, and having a function of determining processing contents based on a combination of verification results of the passwords.