JPH0338396A - Next generation ic card - Google Patents

Abstract

PURPOSE:To develop high security effect and to increase an access speed by mounting an IC chip, wherein a signal transmitting/receiving exclusive circuit and a memory capable of writing read/write possible and impossible password function and data memory function at the time of the publishment of a card are fused, in the board of the card. CONSTITUTION:A single IC chip wherein a gate array 2 becoming a data signal transmitting/receiving exclusive circuit and a memory 3 are fused is mounted in the card board 1 of an IC card and sheet-like electromagnetic coils (4A) - (4D) mutually transmitting a data signal between a reader/writer and said coils through electromagnetic force are mounted in said card board 1. A white card 1A is formed at the time of manufacturing and the writing of a password for recovering password function, the allotment of a function password and the allotment of the memory at every function are performed in a card publishing stage and the writing of the function password is performed. The card 1 is inserted in the reader/writer to give the function password and, when said password coincides with the written function password, the reading/ writing of the allotted memory is performed. In case of non-coincidence, the number of errors is counted and, when the count value exceeds a set value, read/write becomes impossible.

Description

[Detailed Description of the Invention] (Industrial Applicability!?) This invention can be applied to, for example, prepay carts, medical cards, credit cards, bank cards, corporate i-cards, national cards, etc.
The present invention relates to IC cards that require high security, such as various types of IJJ cards.

(Conventional technology) One of the conventionally known IC carts in the Riko Building has an IC chip that combines a CPU and memory built into a card board. The control circuit that controls procedures etc. is a general-purpose CPU
However, no matter how much effort was made to create a security system that operated under the control of the CPU, it was impossible to protect the secret of its performance, and it was beyond the realm of general-purpose use. In other words, the control element is a combination of general-purpose CPU hardware and software such as I9 security procedures, and is pre-installed at a semiconductor manufacturer or the like.

Further, access between the IC card and the reader/writer was of a contact type.

(Problems to be Solved by the Invention) As described above, conventional IC cards are configured to use the CPU for the identification function to improve security. Although the security effect is higher than that of magnetic cards, which were the mainstream of cards, the use of cards by people on the card manufacturer's side, such as producers of software programs such as security procedures and engineers involved in repairing and modifying systems, is effective. It is not possible to completely prevent the leakage of secrets, and as a result, there is a need for a card with higher security.

In addition, access is by contact force type.

It has the drawback that data transfer is prone to abnormalities due to dust adhesion to the terminal, poor contact due to wear, and unexpected pickup of static electricity.

This invention was made in view of the current situation, and is a next-generation IC that can exhibit extremely high security effects and increase access speed.
The purpose is to provide cards.

Another object of the present invention is to make it possible to maintain the CI in a normal state during data transfer with the read/writer for a long period of time.

(Means for solving departmental problems) In order to achieve the object of item L, the following (1) generation IC card according to the present invention has at least a circuit for transmitting and receiving a card and a circuit for transmitting and receiving the card. Published last year/U.F. II
- RG・IC that integrates the secret function including password verification and data storage function + "(functional memory)"
It is characterized by a built-in chip.

In addition, the following t (1st generation I) related to the invention stated in claim 12
The C card has a plurality of built-in electromagnetic coils on the card board side for transmitting data signals via electromagnetic force between the lead and the back.

(Function) In the second generation IC card according to the present invention, the security function is not installed on the PS at the time of cart manufacturing, but the predetermined security function is written by the user when the cart is issued. There is no fear of leakage of the secret of the functional password through the medium of
Card security can be further improved.

Furthermore, since the access processing is performed using a dedicated circuit, the access speed can be extremely high.

Furthermore, according to the invention described in claim 2, the data signal is transmitted between the IC card reader/writer and the IC card reader/writer via magnetic force. This can be done without contact, and it is possible to prevent IE from abnormalities in data transfer speed due to poor contact or static electricity pickup.

In addition, 'd' is used to transmit data signals between an IC card and a reader/writer without contact via electromagnetic force.
By using a sheet-like coil as the im coil, the IC card can be made thinner and a cart with excellent portability can be obtained. .

(Tip example) Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 is a perspective view showing the outline of the next generation IC card according to the present invention. In the figure, l is a cart board made of synthetic resin or other electrically insulating material, and data It has a built-in single IC chip that combines a gate array 2 and memory 3 (programmable ROM), which serve as a dedicated circuit for signal transmission and reception, and also transmits data signals to the read/writer via electromagnetic force. Four sheet-like magnetic coils (4A
), (4B), (4C), and (4D) are built-in.

For the next-generation IC card like the one mentioned above, when applying for SJ, leave it as a blank card IA as shown in Figure 2.
At the actual card issuance stage, write the PIN for PIN function recovery, allocate functional PINs (1 to 7), allocate memory for each function, and write (burn) the assigned functional PINs. At the same time, a design, etc. suitable for the purpose of use of the card is printed.

Then, when actually using the card, as shown in Figure 3, insert the cart l into the REIT/WRITER and give the functional PIN (step lO), which will match the functional PIN written on the IC card. Step 11) to determine if they match or not, and if they match, write the memory slots assigned to each functional password (Step 1.P1).
2) If not, count the number of errors (Step 13), then determine whether the driver has changed the set value to O (Step 14), and if it is over, Function 11^ is stopped, that is, read/write is disabled (step 15).

As for card 1B, which has become unreadable/writable, as shown in Figure 4, the card must be inserted into the read/writer and a vI certificate function recovery certificate is given (step 20). Step 21) Determine whether the password matches the function recovery password stored in the IC card (Step 21), and if it matches, give the function password (Step 2)
2) Determine whether it matches the functional PIN of the card or not. Step 23) L. - If it does, enable reading of the allocated memory (Step 24) On the other hand, Step 21 If they do not match, count the number of errors in step 2.
5), that callan) (III is set (step 26 to determine whether it is over a or an), when over,
Disable card paste/write (Step 27)
).

The transmission and reception of data signals between the above-mentioned IC cart and REIT/Writer is performed using four electromagnetic coils (
4A), (4B), (4G), and (4[]) and the corresponding four electromagnetic coils on the read/writer side, and this is done in a non-contact state through electromagnetic force.

Further, in the above embodiment, a gate array is used as a dedicated circuit for transmitting and receiving data signals, which can configure a wide variety of logics through simple post-processing, but the present invention is not limited to this. Any circuit may be used as long as it is possible.

(Effects of the Invention) As mentioned in January, according to this invention, the security function is not installed at the time of cart manufacture, but the security function is installed on the card issuer side, so the card manufacturer side has 74 techniques. It is possible to completely avoid leaking the secret of the function code through someone else, further increasing the security of the card. In addition, since card functions can be managed individually and centrally by each user, it is no longer necessary for manufacturers who produce extremely large numbers of cards to manage and manage programs for individual users. It is possible to avoid emphasis and widening of salaries.

Furthermore, since the access processing is a hardware process using a dedicated circuit, the access speed can be significantly increased compared to the case of software processing using a CPU as in the case of conventional IC cards.

In addition, by using a non-contact data transfer means,
Even when used for a long period of time, the predetermined data transfer can always be performed normally and accurately, and the reliability and resistance of the card can be improved.

(7) Issuance operation and REIT/ Flowchart 1 explaining writer operation
・It is.

(Explanation of symbols) 1... Cart board, 2... Dedicated circuit (gel door 1/
b), 3...Memory, 4A, 4B, 4C, 4D10.
electromagnetic coil.

-Ioriichi

Claims (3)

[Claims] (1) A single IC chip is built into the card board, which combines at least a dedicated circuit for signal transmission and reception, and a memory that can write the read/write capability, password function including password verification, and data storage function when the card is issued. A next-generation IC card that is characterized by (2) The next-generation IC card according to claim 1, further comprising a plurality of electromagnetic coils built into the card substrate side for mutually transmitting data signals via electromagnetic force between reads and writes. (3) Claim 2, wherein the electromagnetic coil is a sheet-like coil.
The next generation IC card listed.