JPS6149081A - Ic card key lock system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Technical field This invention uses an IC card with a built-in IC and a card terminal, an input key, and a display section formed on the surface.
This invention relates to an IC card key lock system that can lock or unlock a key.

(1)) Prior art and its drawbacks Key lock systems that use magnetic cards have been in practical use for some time, but magnetic card key lock systems can easily read the contents of magnetic cards, and Since it can be changed, it is not desirable in terms of crime prevention and may lead to crime in some cases.

(C) Purpose of the invention The purpose of this invention is to verify the card itself and the person's personal identification number, and to use an IC card instead of a magnetic card, which has extremely high data confidentiality, and to transfer the card identification code to the IC card. This provides an IC card key lock system that has extremely high security by storing information on a card.

(d+ Structure and Effect of the Invention) To summarize, this invention includes a card reader that stores a card identification code in an IC card and also stores a password together with the card identification code, and accepts an IC card with the card reader. When the IC
The card identification codes stored in both the card and the card reader are compared, and the PIN entered from the input key provided on the IC card is compared with the PIN stored in the card reader. The key is locked or unlocked only when the double comparison results match.

According to the present invention, by configuring as described above, I
In addition to the fact that the data on the C-card itself is extremely confidential, the card verification and verification of the cardholder are performed twice, which provides extremely high security and constitutes a safer key lock system. be able to. Furthermore, since the display section and input keys are provided on the IC card itself, it has the advantage of being very easy to operate and having a compact structure.

(e) Embodiment FIG. 2 is a block diagram of an IC card key lock system which is an embodiment of the present invention. This system is IC card 1
, a card reader 2 and a key part 3.

The card reader 2 includes a CPU 20 and a ROM 21 that stores programs and the like. It is composed of a RAM 22 that stores a card identification code ID and a password, a key control section 23, and an IC card acceptance section 24. IC card acceptance section 2
4 has a recess into which the IC card 1 is inserted, and the recess has a contact that contacts a card terminal formed on the surface of the IC card 1. The IC card 1 is inserted into the recess, and data is exchanged between the card reader and the IC card in a state where the card terminal and the contactor are in contact with each other.

The poor AM 22 also has an area MA that stores a card identification code ID for identifying whether the inserted IC card 1 is an IC card that has a pair relationship with the card reader. It has an area MB for storing the PIN number of the IC card owner, and a work area for other calculations. The key control unit 23 is the CPU 20
The solenoid of the key part 3 is turned on and off in response to a lock or release command from. In part 3, the key lock is activated or released by turning the solenoid on or off. For example, a room number or the like is used as the navigation code ID. 4 is the door.

FIG. 3 is a diagram showing the configuration of the IIC card 1.

On the surface of the card body is a display section 10 consisting of an LCD (liquid crystal display). Input keys consisting of touch switches 1)
, and a card terminal 12 are formed. Further, an IC chip 13 consisting of a CPU 13a, a RAM 13b, and a RAM 13b is embedded inside. The RAM 13b is composed of a nonvolatile memory, and includes an area M1 that stores a code ID of the same data as the card identification code ID stored in the card reader 2, a buffer area M2 that stores data input from the input key 1), and a program. It has an area for storing etc. Buffer area M2 is RA
It may be provided in M13b. When the IC card 1 is inserted into the IC card receiving part 24 of the card reader with the above configuration, power is supplied from the card terminal 12 and the ROM 13 C
The program stored in will start. At this time, when a password etc. is input using the input key 1), the input data is displayed on the display section 10 and the buffer area M2 is displayed.
The data is transferred to and from the card reader 2 via the buffer.

Next, the operation of the IC card key lock system having the above configuration will be explained with reference to FIG. 4A is a flowchart showing the operation on the card reader side, and FIG. 2B is a flowchart showing the operation on the IC card side.

At step nl (hereinafter step ni will be simply referred to as ni), the card reader side waits for the IC card 1 to be inserted into the IC card receiving section 24. When IC card 1 is inserted, card identification code I is sent from the IC card side at n2.
Receive D. Next, the received card identification code ID is compared with the card identification code ID stored in the area MA, and if they do not match, the process returns to nl, and if they match, the process proceeds to the next step n4. At n4, a password is further received from the IC card side. At n5, the received password is compared with the password stored in the area MB, and if they do not match, the process returns to nl, and if they match, the process proceeds to n6. At n6, the key is locked or unlocked depending on the state at that time. That is, if the initial state is a key lock state, the key is released, and if the key is released, the key lock is performed.

On the IC card side, when the IC card 1 is first inserted into the IC card receiving section 24 on the card reader side, the program starts upon receiving power, and first inputs the card identification code ID stored in area M1 using nlo. Send. Next, it waits for the input of the password from the input key 1) at nil, and when the password is input, it transmits the password at n12. That is, when a password is input from the input key 1), the password is first transferred to the buffer area M2, and the contents of the buffer area are further transmitted to the card reader side.

When locking or unlocking the key by the above operation, the card identification code ID stored on both the card reader and iIC card side is compared, and the PIN entered from the IC card and the card reader side are The key is compared with the stored PIN number, and the key is locked or unlocked only if both numbers match.

[Brief explanation of drawings]

FIGS. 1A and 1B show the card reader side of an IC card key lock system according to an embodiment of the present invention. It is a flowchart showing each operation on the IC card side. FIG. 2 is a block diagram of the key lock system, and FIG. 3 is a block diagram of the IC card. MA-Force-Card identification code storage area on the reader side, MB-Password storage area on the card reader side, 1-IC
Card, 2-card reader Ml-card identification code storage area on IC card side, 13C-ROM (first storage section), 22-RAM (second storage section).

Claims (1)

[Claims] (1) Consists of an IC card with a built-in IC and a card terminal, an input key, and a display section formed on the surface, and a card reader that accepts this IC card and locks or unlocks the key. A first storage section that stores a card identification code, a second storage section that stores the card identification code and a PIN number, and a card identification code that is stored in both the IC card and the card reader when the IC card is accepted. a card identification code comparing means for comparing a password; a password comparing means for comparing a password input from the input key when accepting an IC card with a password stored in the second storage unit; The IC card is characterized in that the card reader is provided with means for locking or unlocking the key only when the comparison results obtained by the two comparison means, the card identification code comparison means and the PIN number comparison means, match. key lock system.