JPS60196872A - Device for preventing ic card from illegal use - Google Patents

Abstract

PURPOSE:To prevent an IC card from illegal use by using the IC card as an effective one form transaction only when a transaction enabled code is set up on a recording area of the IC card by a card holder making a pair with the IC card. CONSTITUTION:Receiving power supply from the card holder 6, the IC card 1 waits (n1) the input of data. When card holder cipher data are received as the initial data from the card holder 6, the data are compared with data stored in a memory area MA in the IC card, and at the coincidence of the ciphers, acknowledgement is sent to the card holder (n4). Receiving the acknowledgement from the IC card 1, the card holder 6 sends a transaction enabled code for permitting the transaction or its reset data to the IC card (n6). The IC card 1 sets up (n7) the code in an area MB at the reception of the transaction enabled code, or resets (n9) the transaction enabled code already set up in the area MB at the reception of reset data. The IC card 1 sends an answer (n8 on n11) for setting or resetting the code and ends the processing.

Description

Detailed Description of the Invention t8) Technical Field The present invention relates to an IC card system comprising an IC card with an IC embedded therein and an IC card input device that accepts the IC card and exchanges data. This invention relates to a device for preventing unauthorized use of.

(b) Background of the Invention IC cards with an IC embedded therein have the potential to become widespread in the future as intelligent cards that have data processing capabilities. The major difference between an IC card and a conventional MS card (a card with a magnetic stripe surface) is that the IC card itself has intelligent functions and has a very large storage capacity. However, like the conventionally used MS cards, if an IC card is lost or stolen, there is a possibility that it will be used illegally by another person.

(C1 Purpose of the Invention The purpose of this invention is to store a code, which indicates that transactions can be made using the IC card, on the IC card by the card holder that is paired with the IC card. 10,000 - Provide an IC card unauthorized use prevention device that can prevent unauthorized use of the IC card even if the IC card is handed over to another person unless the above-mentioned code is set on the IC card. It is about providing.

(d) Structure and Effects of the Invention In summary, the present invention includes a card holder that has an IC card storage section, transmits a transaction enable code or its reset data when the IC card is stored in the IC card storage section, and A storage area for a transaction-enabled code is provided in the storage means of the card, and when the IC card is used, the IC card itself checks whether or not a transaction-enabled code is set in the memory area, and the transaction-enabled code is sent from the card holder. The use of the IC card is enabled only when the transactable code is written in the storage area, and the transactable code set data is sent and the transactable code written in the storage area is enabled. When the code is in the reset state, the IC card cannot be used.

According to this invention, the IC card can be effectively used for transactions only when the transaction enable code is set in the storage area of the IC card, so that the IC card is not involuntarily stolen by another person. Even if the money is transferred, it cannot be used illegally unless the tradable code is sent. In other words, even if your IC card is lost or stolen, unless the card holder is also lost or stolen, your IC card will not be lost or stolen.
It is possible to prevent unauthorized use of the C card. In addition, since the transactable code stored in the storage means is reset based on data sent from the card holder, once the transactable code is set, it can be reset by storing it in the card holder again. The IC card can be used continuously until the transaction is completed, which has the advantage of being extremely convenient for multiple transactions.

FAL EMBODIMENT FIG. 1 is an external view of an IC card. plastic I
An IC2 is embedded inside the C card l, and a plurality of connectors 3 connected to the IC2 are formed exposed on the card surface. Further, an emboss 4 is formed on the front surface, and a preliminary magnetic stripe 5 is formed on the back surface.

As shown in FIG. 2, the IC 2 includes a CPU 20 and a ROM 2 consisting of an electrically writable and erasable EEFROM.
1 and a RAM 22 used for work. The CPU 20 receives power supply from the terminals C4 and C8 of the connector 3, and receives a clock from the terminal C6. It also receives a reset pulse from terminal C7 and transmits data (serial data) via terminal C2. Terminal CI, C3
, C5 are spare terminals.

FIG. 3 is an external view of the card holder. The card holder main body 6 is made of plastic and has approximately the same size as the IC card. The surface of the card holder main body 6 includes a numeric keypad 7, a liquid crystal display 8. A solar battery cell 9 is arranged. The numeric keypad 7 is used to reset the transaction code on the IC card or to enter other data. The display 8 displays human data, etc. The solar battery cell 9 constitutes the power source of the card holder itself, and further supplies power to the IC card when the IC card is stored. An IC card insertion slot 10 is provided on the side of the card holder main body 6. This is the IC card.
The C card is inserted through the C card insertion slot 10 and stored inside. Inside the card holder main body 6, there is provided a storage section for storing this IC card, and further inside this storage section, an IC card is stored.
A contact terminal is attached to contact the terminal 3 of the C card.

FIG. 4 is an internal block diagram of the card holder. The contact terminals 30 have the same configuration as the terminals of the connector terminals 3 of the IC card. The solar cell 9 is connected to contact terminals C4 and C8, and the CPU 31 receives power supply from the pins connected to the contact terminals C4 and C8. A clock circuit 32 is also connected to the contact terminal C6, and the CPU 31 receives a clock from the pin connected to the contact terminal C6.

The CPU 31 further sends out a reset pulse from the contact terminal C7. Further, data is serially transferred to and from the IC card via the contact terminal C2. The main data sent from the card boulder side is the tradable code or its reset date. 33 is a ROM that stores a program that defines the operation procedure of the card holder, and 34 is a RAM that includes a data work area and the like.

FIG. 5 is a schematic external view of an ATM (automatic transaction processing device) equipped with an IC card input device. The front surface of the main body 40 is provided with a CRT 41 for displaying messages, etc., an input key 42 for performing transaction operations, an IC card insertion slot 43 for inserting an IC card, and a slot 44 for counting slips and bills.

FIG. 6 is a block diagram of the control section of the ATM. The main control unit 50 includes an IC card input device 51. CRT control section 52
．． Numeric keypad control section 53. Slip issuing machine 541 Bill discharging machine 5
51 and a line control unit 56 respectively. Each element is divided into blocks and has a master-slave control system configuration with the main control section 50. IC card man saw device 5
1 accesses the IC card input through the IC card insertion slot 43 and exchanges data. The CRT control unit 52 controls the display of the CRT 41. The numeric keypad control section 53 receives input data operated by the human keypad 42 and sends it to the main control section 50. The slip issuing machine 54 takes out the slip with transaction data printed thereon at the takeout port 44 at the end of the transaction.
released into the The banknote dispensing machine 55 discharges a desired amount of banknotes into the outlet 44 when a payment transaction is performed. The line control unit 56 performs transmission control with a center equipped with a large-capacity data file.

FIG. 7 is a partial configuration diagram of the ROM 21 included in the IC2. A code for identifying an IC card is stored in a cardholder code storage area MA that constitutes a code storage area. As will be described later, in this embodiment, the IC card and the card holder are compared using a code. Access from the card holder to the ROM of the IC card is made after the code is verified. The area MB stores a transaction permission code, which is data that permits transactions using the IC card. The transaction enable code is sent from the card holder. When the IC card receives this code, it sets the code in the area MB. On the other hand, when receiving the tradable code set data, the set tradable code is reset.

Transaction data is stored in the area MC. Area MC can be accessed by the card input device, ie, the ATM side, but not by the card holder. The card holder can only access the area MB.

FIG. 8 shows the operating procedure on the IC card side.

When IC card 1 receives power supply from the ATM side or card holder,
Wait for data input at nl (referred to as i). When data is received from the ATM side, the process proceeds from 02 to n12, and when data is received from the card holder, the process proceeds from n2 to n3. n3
Now, since the first data sent is the cardholder code, the cardholder code is verified. The code sent from the card holder is verified by matching it with the code stored in the area MA. If the comparison does not match, return to nl. By verifying the cardholder code in this way, the pairwise relationship between the IC card and the cardholder can be specified. That is, it is not possible to use other card holders. On the cardholder side, the cardholder code is R.
It is stored in advance in OM-33.

If the codes match, an authentication response is sent to the cardholder at n4. An authorized response means that the cardholder is
This is data that is responded to when the card holder is recognized as having a pair relationship with the C card. The card holder is I
Upon receiving this authorization response from the C card, a transaction permitting code or its reset data for permitting the transaction is sent to the IC card. The transactable code or its reset data is sent by operating the numeric keypad 7. The IC card is n5.until it receives these codes from the card holder. Wait at n6. When receiving the tradeable code, use nl to set the code in area MB. nl constitutes a tradable code cent instrument. When the reset data is received, the tradable code already set in the area MB is reset at n9. n9 constitutes a tradable code reset means. Furthermore n8. A nil response is made to the card holder and the process ends. The above operation cents or resets the tradable code for the area MB.

On the other hand, if data is received from the ATM side (card input device) at n2, the process proceeds from n2 to n12. At n12, it is determined whether the transaction is in a withdrawal mode. The mode is determined based on the content of data sent from the ATM side. Note that until this stage, of course, A
The operator specifies the withdrawal mode on the TM operation panel. If it is not in the withdrawal mode, proceed to nll'n14. If it is the withdrawal mode, the process advances from n12 to n13. In the latter case, it is determined whether a tradable code is set in the area MB. Not sent (
If it is in the reset state), it ends. If it is in the (Sef) state, proceed to n13. n13 is a step for executing the corresponding transaction processing. In the above processing for n12 and below, n14
corresponds to the transaction processing execution means of the present invention.

The above operation allows access to the area MC from the ATM side only when the transaction enable code is sent to the area MH. On the other hand, when the tradable code of area MB is reset, access to area MC becomes impossible unless cents are sent again. Furthermore, access to the area MC becomes possible only when the transaction mode is a withdrawal mode, which is a specific transaction process.

Therefore, even if the IC card is lost or stolen, fraud by using the card can be prevented as long as the transaction permitting code is not sent to the area MB. Furthermore, in this embodiment, the card holder code is verified even when the card holder is used, so even if the card holder is lost or stolen along with the IC card, it will not be used fraudulently. It has the advantage of being preventable.

[Brief explanation of drawings]

Figure 1 is an external view of the IC card, Figure 2 is a block diagram of the IC, Figure 3 is an external view of the card holder, Figure 4 is a block diagram of the card holder, and Figure 5 is an ATM equipped with an IC card input device. 6 is a block diagram of the control section of the ATV, FIG. 7 is a block diagram of the main parts of the ROM of the IC card, and FIG. 8 is a flowchart showing the operation of the IC card. 1-IC card, 2, IC, 6-card holder body,
MB - Tradable code storage area. Applicant Tateishi Electric Co., Ltd. Agent Patent Attorney Hisao Komori 1st Section Figure 2 Figure 3 Figure 4 Figure 5 Figure 1J7

Claims (1)

[Claims] +11 In an IC card system comprising an IC card with an IC embedded therein and an IC card input device that accepts the IC card and transfers data between the IC card and the , having a storage means for a transaction permitting code that permits transactions using the IC card, and having a storage section for the IC card;
A card boulder 1 is provided which sends a transactable code or its reset data to the IC card when the IC card is stored in the storage section, and further, when receiving the transactable code from the IC card, the code is stored in the storage means. transaction-enabled code setting means for setting the transaction-enabled code to the IC card; transaction-enabled code reset means for resetting the transaction-enabled code stored in the storage means when receiving transaction-enabled code Noriset data from the IC card; and the IC card input device. to IC
means for determining whether or not a transactable code is set in the storage means when a card is input; and a transaction processing execution means for executing the transaction processing only when the transactable code is set. A device for preventing unauthorized use of an IC card, characterized in that it is provided in the tC card. (2) The IC card unauthorized use prevention device according to claim 1, wherein the transaction processing execution means executes a specific transaction processing only when a transaction code is entered.