JP2001260580A - Bills as well as valuable papers mounting ic chip and preventing method of unfair utilization of them - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide valuable papers, capable of preventing unfair utilization by discriminating the cheating of the same and capable of reutilizing the papers when the papers can be taken back to a regular control source, and the preventing method of unfair utilization of them. SOLUTION: A fine IC chip 104 is mounted on valuable papers 103, such as bills, stocks or the like, while the memory device of the IC chip 104 stores a lock information 511 and a lock key. The lock information 511 retains a condition of either one of lock/unlock. A business server 105 reads the condition of the lock information 511 through an IC chip reading device 407 and will not start a business process when the condition is not under the condition of unlock. A control server 101 communicates with the IC chip 104 through an IC chip reading and writing device 307 to certify that the lock key 513 is right and, thereafter, changes the condition of the lock information 511 if necessary.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to finance / service /
Securities that are subject to handling such as the transportation business and methods for preventing their unauthorized use, and in particular securities such as bills, gift certificates, stock certificates, bonds, bills, checks, etc.
(Referred to simply as "securities") when storing or transporting securities, making securities that have been illegally acquired by theft, etc. unusable, or applying it to an unauthorized use prevention system that certifies the validity of legitimately acquired securities. It is about effective technology.

[0002]

2. Description of the Related Art Conventionally, payment of transactions, exchange of goods, investment in a stock company, acquisition of business funds from a third party, promise of payment, payment of money, etc. Securities that express various promises and rights with various values are circulating in the world.

[0003] When these securities are temporarily stored or transported, a safe or a trunk with a physically locked key is locked, or a guard is placed to prevent theft. However, securities are not subjected to any particular processing, and are currently usable as they are.

In recent years, unattended ATMs placed on the streets
/ CD terminals can be destroyed using heavy equipment such as a power shovel, etc., and the stored cash can be exploited. There is a technique to record the fact of being stolen by spraying.

[0005]

However, such a conventional method has the following problems. In other words, once stolen securities are indistinguishable from legitimate ones, they can be used illegally, marked with ink, etc., and recovered by the legitimate owner. Also cannot be reused. It is also possible that ink will not reliably reach the full number of securities being exploited.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, to prevent the stolen securities from being illegally used, and to be able to reuse stolen securities when they are returned to an authorized management source, and to prevent the illicit use of the securities. It is to provide a method.

[0007]

SUMMARY OF THE INVENTION According to the present invention, for securities that are stored or transported, information on an IC chip mounted on the securities must be read and used as unauthorized exploitation. This makes it possible to identify whether or not it can be used as an authorized transfer.

In the present invention, whether or not securities can be used is identified by registering identification information on whether or not the securities can be used in an IC chip mounted on the securities. In recent years, development of a non-contact communication type IC chip (RFID) having a size of several mm (2 to 3 mm) square has been announced in newspapers and the like.
If such fine IC chip manufacturing technology advances further,
IC chips that can be attached to bills, securities, and the like have appeared. In the present invention, a fine IC chip is mounted on such a thin medium such as paper on each of the securities described in the present invention, information on the validity of each security is given, and the information is read. It is possible to identify.

Reading and writing to an IC chip mounted on securities can be performed by a management unit of a corporation or business office that manages storage / transportation of the securities, and also manages security related to writing information on the IC chip. . Therefore, when someone else exploits securities that are stored or transported by a legitimate management source, it is necessary to indicate that the information on the IC chip mounted on the securities is in an unusable state. By reading this information, it is possible to identify that the securities have been illegally exploited, and by refusing to use them in this state, it is possible to prevent unauthorized use. IC mounted on securities
The chip information should be read by an IC chip reader when securities are used for business processing.

On the other hand, writing of information to an IC chip mounted on securities can be performed only by a management computer that holds such control information by using security control information (a password, an encryption key, etc.). In this way, a third party who does not know the control information cannot rewrite the information of the IC chip.

[0011] In addition, when securities managed by one management source are legally transferred to another management source, a new management source needs to rewrite the information of the IC chip mounted on the securities to be transferred. By removing the restriction on rewriting control information using the control information set by the old management source so that the control information can be changed to the control information of the old management source, the control information can be changed to the control information managed by the new management source. Thus, the new management source can rewrite the information of the IC chip mounted on the securities as needed using the security control information under its own management.

[0012] Thus, even securities once exploited illegally,
If the information can be returned to the management source having valid security control information capable of rewriting the information of the original IC chip, the information of the IC chips of the securities which have been in the unusable state can be returned to the usable state, and there is no problem. It can be reused.

As described above, according to the securities and the method for preventing unauthorized use of the same according to the present invention, it is possible to reliably read and write information on the availability of securities for all management units equipped with IC chips by non-contact communication. Exploited securities can be identified, fraudulent use thereof can be prevented, and it is possible to return them to a usable state once they are returned to the authorized owner.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention;

FIG. 1 is a diagram showing a schematic configuration of the present embodiment. On the securities 103, a fine IC chip 104 is mounted. The IC chip 104 is inserted between two sheets of paper constituting the securities 103, or the IC chip 1
04 is attached to the securities 103 by a method such as bonding a seal to the securities 103. In any case, the IC chip 104 is attached to the securities 103 in such a manner that the IC chip 104 cannot be separated from the securities 103 without being damaged so as to render the securities 103 unusable. Lock information 511 and lock key freeze information 5 are stored in a storage device in the IC chip 104.
12 and the lock key 513 are recorded. Lock information 51
1 has one of a locked state and an unlocked state. The locked state is a state where the securities 103 cannot be used for business processing, and the unlock state is a state where the securities 103 can be used for business processing. The lock key 513 includes lock information 511 and lock key freeze information 51.
2 is a bit string serving as a key (password, encryption key, etc.) necessary to change the lock key 513 itself.
The lock key freeze information 512 has one of a lock key freeze state and a lock key freeze release state. The locked state of the lock key is a state in which the lock key 513 is frozen and cannot be updated.
3 can be updated.

The management server 101 has lock information 511,
A computer that has the authority to update the lock key freeze information 512 and the lock key 513, manages the lock key 513, and connects to the IC chip read / write device 307. The management server 101 reads information on the IC chip 104 mounted on the securities 103 in a non-contact manner via the IC chip reading / writing device 307, changes the lock information 511, changes the lock key freeze information 512, and locks. The key 513 is updated.

The business server 105 is a computer that performs business processing related to the securities 103, and the IC chip reader 4
07. The business server 105 accesses the lock information 511 on the IC chip 104 of the securities 103 via the IC chip reader 407, and if the lock information 511 is in an unlocked state, performs a business process for handling the securities 103 and locks. If it is in the state, no business process is performed.

FIG. 2 is a view for explaining an example of a procedure for using the securities 103 having the IC chip 104 mounted thereon. I
The securities 103 with the C chip 104 attached thereto are securities 1
It is assumed that the securities 103 entered from the manufacturing process of No. 03 are used first, or are managed by another management server, and are initially managed by the management server 101. , Lock information 511 is in a locked state, and lock key freeze information 512 is in a lock key freeze state.

FIG. 2A shows a step in which the management server 101 unlocks the lock key freeze information 512 for the IC chip 104 on the securities 103 and updates the lock key 513 to a lock key managed by itself. is there.
FIG. 2 (b) shows that the management server 101
In this step, the lock information 511 of the C chip 104 is locked, and the lock key freeze information 512 is changed to the lock key freeze state. FIG. 2C shows a step of storing or transporting the securities 103 in this state.
The securities 103 in this state cannot be used for business processing. Further, the lock key 513 cannot be unduly updated to a lock key under its own control by another management server.

FIG. 2D shows that the management server 101 uses the securities 103 to use the securities 103 for business processing.
This is a step of changing the lock information 511 of the upper IC chip 104 to an unlocked state. In FIG. 2E, the business server 105 is the IC chip 1 on the securities 103.
It accesses the lock information 511 of 04 and checks whether it can be used. If the lock information 511 is in the unlocked state, the business process for the securities 103 is started, and if the lock information 511 is in the locked state, the business process for the securities 103 is not performed. Therefore, the securities 103 that have been stolen during storage or transportation are not processed.

The transfer of the securities 103 from the management of one management server to the management of another management server means, for example, that the securities 103 are transferred from one financial institution to another financial institution, or between offices. It is assumed that it will be transferred. Therefore, if a security problem does not occur, the security information 1 of the IC chip 104 is unlocked and the lock key freeze information 512 is unlocked and the security key 1 is unlocked.
03 may be transferred between offices.

FIG. 3 is a diagram showing a schematic configuration of the management server 101. As shown in FIG. 3, the management server 101
PU 301, memory 302, magnetic disk device 30
3, the keyboard device 304, and the display device 30
5, a CD-ROM device 306, and an IC chip reading / writing device 307. The magnetic disk device 303 stores a lock key management table 308. The entire management server 101 may be a portable information processing device.

The CPU 301 is a device for controlling the operation of the management server 101 as a whole. The memory 302 is a storage device that stores various processing programs and data. The magnetic disk device 303 is a storage device that stores various processing programs and data. The keyboard device 304
A display device 30 for inputting data;
An apparatus 5 displays various data. CD-ROM
The device 306 is a CD-R on which various processing programs are recorded.
This is a device for reading the contents of the OM. The IC chip reading / writing device 307 is an IC chip 1 mounted on the securities 103.
It is a device that reads and writes information in a non-contact manner with the device 04.

The lock key management table 308 is a table for storing lock keys managed by the management server 101.

A lock / lock key processing unit 310 manages lock information 511, lock key freeze information 512 and lock key 513 stored in the memory 302 and recorded on the IC chip 104 of the securities 103 as shown in FIG. And is executed by the CPU 301.

The lock / lock key processing unit 310 recorded on a recording medium such as a CD-ROM
3 and then loaded into the memory 302 and executed. Note that a recording medium other than a CD-ROM may be used as a recording medium for recording this program.

FIG. 4 is a diagram showing a schematic configuration of the business server 105. As shown in FIG. 4, the business server 105
PU 401, memory 402, and magnetic disk device 40
3, the keyboard device 404, and the display device 40
5, a CD-ROM device 406, and an IC chip reading device 407.

The CPU 401 is a device for controlling the operation of the business server 105 as a whole. The memory 402 is a storage device that stores various processing programs and data. The magnetic disk device 403 is a storage device that stores various processing programs and data. IC chip reader 407
Is a device that reads the lock information 511 from the IC chip 104 mounted on the securities 103 in a non-contact manner.

The memory 402 includes a lock determination processing unit 410
And a business processing unit 411. Lock judgment processing unit 4
A program 10 reads the lock information 511 of the IC chip 104 mounted on the securities 103 and determines whether or not the securities 103 can be used. The business processing unit 411 is a processing unit that performs processing of a business application related to the securities 103 determined to be usable.

It is assumed that a program including the lock determination processing unit 410 recorded on a recording medium such as a CD-ROM is stored in the magnetic disk device 403 or the like, and then loaded into a memory and executed. Note that a recording medium other than a CD-ROM may be used as a recording medium for recording this program.

FIG. 5 is a diagram showing the internal configuration of the IC chip 104 mounted on the securities 103. IC chip 10
Reference numeral 4 denotes a fine semiconductor chip, which includes a communication antenna 501, an electromagnetic induction device 502, a power storage device 503, a control device 504, and a storage device 505 as shown in FIG.

The communication antenna 501 is connected to the IC chip 104
Information between the IC chip reading / writing device 307 and the IC chip reading device 407,
The electromagnetic wave for power supply as a power supply for
This is a device that receives from the C chip reading / writing device 307 or the IC chip reading device 407. The electromagnetic induction electromotive device 502 is a device that converts electromagnetic waves received by the communication antenna 501 into electric power by electromagnetic induction. Power storage device 50
Reference numeral 3 denotes a device that accumulates electric power generated by the electromagnetic induction generating device 502 and serves as a power source for driving the IC chip 104.

The control device 504 includes a microprocessor and controls the operation of the entire IC chip 104. The storage device 505 stores lock information 511, lock key freeze information 512, and management information of the lock key 513, and various programs such as an encryption / decryption program 521, a lock key validity determination program 522, a lock state reference update program 523, and a lock key update program 524. Is stored.

The lock information 511 stores 1-bit information indicating a lock / unlock state. The lock key freeze information 512 stores 1-bit information indicating lock key freeze / lock key freeze release. The lock key 513 is information managed as a key given to the IC chip 104.

FIG. 6 is a diagram for explaining the state transition of the lock information 511 and the lock key freeze information 512 recorded on the IC chip 104. There are three states of the lock information 511 and the lock key freeze information 512: a lock and lock key freeze state 601; an unlock and lock key freeze state 602; and an unlock and lock key freeze release state 603.

The state 601 is a state in which the securities 103 cannot be used and the lock key 513 cannot be updated. The transition from the state 601 to the state 602 can be made by using the correct lock key.

The state 602 is a state in which the securities 103 can be used and the lock key 513 cannot be updated. A transition from the state 602 to the state 603 can be made by using a correct lock key. The state 602 can be changed to the state 601 by using the correct lock key.

The state 603 is a state in which the securities 103 can be used and the lock key 513 can be updated. A transition from the state 603 to the state 602 can be made by using a correct lock key.

FIGS. 7A and 7B are flowcharts showing the processing flow of the lock / lock key processing unit 310 of the management server 101. Lock / lock key processing unit 310
Receives a request input from a keyboard or the like for the target securities 103 (step 701). There are four types of requests as follows. (1) The lock information 511 of the IC chip 104 mounted on the securities 103 is changed from the unlocked state to the locked state. (2) Lock information 51
1 is changed from the locked state to the unlocked state. In this request, it is necessary to specify whether the lock key freeze information 512 is in the lock key frozen state or the lock key freeze release state. (3) The lock key 513 is updated after the lock information 511 is unlocked and the lock key freeze information 512 is set to the lock key freeze release state. (4) After updating the lock key 513, the lock information 511 is locked and the lock key freeze information 512 is locked.

Next, the lock / lock key processing unit 310
Whether the lock key 513 is correct, for example, a lock key notified from an old management source, a lock key input from the keyboard 304 or the like, or a lock key registered in the lock key management table 308 and the IC chip 10
Then, it is determined whether the lock key 513 matches the lock key 513 (step 702). Here, since the lock key 513 has not been updated yet, the lock key before the update of the lock key is collated, and the lock key is notified from the lock key managed by the management server 101 or another management office. One of the lock keys. If the lock key 513 is not correct (step 702, error), the processing is terminated.

If the lock key 513 is correct, the IC
An unlocking process for changing the lock information 511 on the chip 104 to an unlocked state is performed (step 703). Next, if the update of the lock key is not requested (step 704, no), the process proceeds to step 709. If the update of the lock key is requested, it is determined whether or not the lock key 513 is correct (step 705). Here, the check in step 702 is repeated, and it is determined that the lock key 513 is correct. Next, the lock key freeze information 512 is read, and if the lock key is frozen (step 706, freeze), the lock key freeze state is released (step 707). Next, the lock key 513 on the IC chip 104 is updated to a new lock key under the management of the management server 101 with reference to the lock key management table 308 (step 708).

Next, referring to FIG. 7B, the lock / lock key processing section 310 determines whether or not the lock key is frozen (step 709). If lock key freeze is specified in requests (1), (4) and (2), it is necessary to freeze the lock key. If the lock key is not frozen, go to step 712. Next, it is determined whether or not the lock key 513 is correct (step 710). When the lock key is updated in step 708, the lock key management table 30
8 is determined to match the updated lock key 513, and the lock key 513 is naturally determined to be correct. If the lock key has not been updated in step 708, the check in step 702 is repeated, and it is determined that the lock key 513 is correct. If the lock key is correct (step 710, correct), the lock key freeze information 512 is set to the lock key frozen state (step 711).

Next, the lock / lock key processing unit 310
It is determined whether or not to lock the lock information 511 (step 712). For the requests (1) and (4), the lock information 511 needs to be locked.
When locking (Step 712, Yes), it is determined again whether the lock key 513 is correct (Step 71).
3). Step 702 for requests (1) and (4)
And the checks in step 710 are repeated, and it is determined that the lock key 513 is correct. If the lock key is correct (step 713, correct), the lock key freeze information 512 is in a frozen state (step 71).
4, freeze), and when the lock information 511 is in the unlocked state (step 715, unlock), the lock information 511
Lock processing to change the lock state to the locked state (step 7)
16).

If there is an error in the lock key in step 710, and if the lock is not locked in step 712,
If there is an error in the lock key in step 13, the lock key freeze information 5 inconsistent with the determination in step 709 in step 714.
If 12 is in the lock key freeze release state, or if the lock information 511 is in the locked state in step 715, the process is immediately terminated.

In the above embodiment, whether or not the lock key 513 is correct is determined by determining whether the lock key under another management or the lock key on the lock key management table 308 and the lock key 513 on the IC chip 104 are different. Although it was determined whether or not they match, the management server 101
IC chip 104 via chip reading / writing device 307
To send the lock key in plaintext to the IC chip 1
When the lock key is transmitted as plain text from the server 04 to the management server 101, there is a high risk of security being broken. For example, if an electromagnetic wave transmitted from the IC chip reading / writing device 307 is wiretapped, a lock key transmitted between the management server 101 and the IC chip 104 can be known. In order to avoid such danger, it is desirable to use the lock key as an encryption key without directly transmitting the lock key and transmit a numerical value encrypted with the lock key. For example, a lock key registered in the lock key management table 308 is used as a public key, and a lock / lock key processing unit 310 generates a random number. The generated random number is encrypted with the public key, and the encrypted random number is compared with the original random number. The data is transmitted to the IC chip 104. When the lock key right / wrong judgment program 522 of the IC chip 104 receives the lock key right / wrong judgment command, the encryption / decryption program 521 decodes the random number encrypted by the lock key 513 stored as a secret key,
The lock key validity determination program 522 compares the decrypted random number with the original random number to determine the validity of the lock key, and notifies the result (positive or negative) to the lock / lock key processing unit 310 of the management server 101. It is possible. In this case, the lock key under another management or the lock key on the lock key management table 308 and the IC chip 10
The lock key 513 on No. 4 has a public key pair correspondence relationship and generally does not have the same value. Therefore, in general, the lock key under any management and the lock key 513 on the IC chip 104 do not need to have the same value, but may be a numerical value having a predetermined correspondence.

When the lock status reference update program 523 on the IC chip 104 receives a command requesting reference to the lock information 511 from the management server 101 or the business server 105, the lock key is determined to be correct or not. Regardless, the contents of the lock information 511 are transmitted to the request source. However, when receiving a command requesting the update of the lock information 511, unless the lock key validity determination program 522 determines that the lock key is correct, it does not respond to this request. When receiving a command requesting reference or update of the lock key freeze information 512, the lock state reference / update program 523 makes this request unless the lock key validity determination program 522 determines that the lock key is correct. Do not respond to

Similarly, when the lock key update program 524 on the IC chip 104 receives a command requesting the update of the lock key 513, the lock key update program 524 must determine that the lock key is correct by the lock key validity determination program 522. If you do not respond to this request. When a public key pair is used as the lock key, the lock / lock key processing unit 310 sends the lock key 513 to the IC chip 104.
After the update request command is transmitted and a response is obtained, the updated lock key (private key) is encrypted with the old lock key (public key) and transmitted to the IC chip 104. The lock key update program 524 decrypts the encryption information received via the encryption / decryption program 521 with the old lock key (private key) stored in the lock key 513, and
13 is replaced with the decrypted new lock key (secret key). When a common key is used instead of a public key pair as a lock key, the lock / lock key processing unit 3
10 encrypts the new lock key (common key) with the old lock key (common key) and transmits it to the IC chip 104, and decrypts the encrypted information received by the lock key update program 524 with the old lock key (common key). , Lock key 51
3 is replaced with the obtained lock key.

The lock key correct / incorrect determination program 522 includes:
The storage device 505 has a lock key right / wrong determination flag,
The result (positive or negative) of the lock key determination is stored. Then, the processing of step 703 (unlock processing),
Step 708 (lock key update), step 711 (lock key freeze processing) and step 7
At the end of each of the sixteen processes (lock process), the lock key right / wrong judgment flag is reset to the initial state (no). With this configuration, in any of the requests (1) to (4), this flag is reset to a negative state at the end of the process.

In the above embodiment, the lock key freeze information 512 is provided on the IC chip 104, and the lock key 513 can be updated only when the lock key freeze information 512 is in the lock key freeze release state.
The present invention can also be implemented in a reduced form so that the lock key 513 can always be updated when the lock key is correct irrespective of the state of the lock information 511. In that case, there are three types of requests (1) and (2) and (3) or (4), and steps 706, 707, 709, 710,
The processes of 711 and 714 are excluded.

The identification number (I) such as the serial number of the IC chip 104 is stored in the storage device 505 of the IC chip 104.
D), the lock key management table 308 is provided with a correspondence table between the ID and the lock key, and the securities 10 having the IC chip 104 mounted on the pair of the ID and the lock key.
3 may be managed. If the IC chip 104 is used merely for the purpose of preventing theft during storage or transportation, all the securities 1 managed by the management server 101 are controlled.
It is also possible to assign the same lock key to the 03 IC chip 104 and manage it. Only the management server 101 can unlock the securities 103 mounted with the IC chip 104 in the locked state recovered from theft or the like.

Alternatively, as a modified example of the above-described embodiment, if a value indicating the invalidity of the lock key 513 specified specially in advance is set in the lock information 511 of the IC chip 104, the unlocking state cannot be permanently restored. If this is done, the securities of the present invention can be electronically discarded in the same manner as, for example, cutting (discarding) processing so that a used gift certificate cannot be reused.

As described above, various modifications can be made in the implementation of the present invention, so that the hardware of the IC chip 104 and the IC chip 104 are added to the balance between the necessary security and the cost of the IC chip 104. Store I
The function of the program executed by the C chip 104 may be determined.

As described above, in the present embodiment, the business server determines whether or not the business process can be performed on the security based on the information of the IC chip mounted on the security without inquiring the management server of the management server via an online network or the like. It is possible to properly perform business processing and prevent unauthorized use. Applying the method of the present invention,
When the unusable securities that have been once exploited can be recovered under the control of a legitimate management server, it can be reused.

As described above, according to this embodiment,
Since it is possible to judge whether or not the securities can be used by using information on the IC chip mounted on the securities, it is possible to identify on the spot whether or not the securities have been illicitly exploited, thereby preventing unauthorized use. is there.

[0055]

According to the present invention, an IC mounted on securities is provided.
Since the securities that have been illegally exploited can be identified using the information of the chip, it is possible to prevent unauthorized use and to return to a reusable state when it can be returned to a valid management source.

[Brief description of the drawings]

FIG. 1 is a diagram showing a schematic configuration of an embodiment.

FIG. 2 is a diagram illustrating a procedure for using securities on which the IC chip of the embodiment is mounted.

FIG. 3 is a diagram illustrating a schematic configuration of a management server 101 according to the embodiment.

FIG. 4 is a diagram illustrating a schematic configuration of a business server 105 according to the embodiment.

FIG. 5 is a diagram showing an internal configuration of an IC chip 104 mounted on securities 103 of the embodiment.

FIG. 6 is a diagram illustrating a state transition of lock information 511 and lock key freeze information 512 according to the embodiment.

FIG. 7A is a flowchart illustrating a processing procedure of a lock / lock key processing unit 310 of the management server 101 according to the embodiment.

FIG. 7B is a flowchart (continued) illustrating the processing procedure of the lock / lock key processing unit 310 of the management server 101 according to the embodiment.

[Explanation of symbols]

101 management server, 103 securities, 104 IC chip, 105 business server, 308 lock key management table, 310 lock / lock key processing unit, 511
Lock information, 512: Lock key freeze information, 513: Lock key

Continuation of the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (Reference) G06K 17/00 G06K 17/00 L 5B058 F 19/07 G07D 7/02 19/00 G06K 19/00 H G07D 7/02 QF term (reference) 2C005 HA01 HA02 HB10 JA09 JB40 LB20 LB32 MA01 MA03 MA40 MB10 NA09 PA02 QA05 SA06 SA07 SA08 3E041 AA01 AA02 AA03 BA20 BB07 DB01 5B035 AA13 BA01 BB09 CA23 5B049 AA01 BB47 FF03 DD39 DD03 FF09 GG03 GG06 GG10 5B055 CC10 CC13 EE02 EE13 EE17 EE21 EE27 HA12 JJ05 KK05 KK09 KK18 PA02 PA34 5B058 CA15 KA01 KA31 KA35

Claims (5)

[Claims] Claims 1. Valuable securities, such as banknotes, gift certificates, stock certificates, and bonds, on which an IC chip that can be read and written in a non-contact manner is mounted. The IC chip determines whether the securities can be used for business processing. Characterized by having a storage device for storing rewritable information indicating information and a program executable in the IC chip for changing the information in response to an external request. Kind. 2. A method for preventing unauthorized use of valuable securities, such as banknotes, gift certificates, stock certificates, and bonds, on which an IC chip that can be read and written in a non-contact manner is provided. Rewritable lock / unlock information indicating whether or not the lock / unlock information can be used, and a program executable in the IC chip for referring to and updating the lock / unlock information in response to an external request are stored. A storage device for instructing the IC chip to set the lock / unlock information to a locked state by an external computer so as to prohibit the use of the securities; The external computer instructs the IC chip to set the lock / unlock information to the unlock state, and the external computer causes the lock on the IC chip to be set. / Refers to the unlock information, the lock / unlock information unauthorized use preventing process of securities, for mounting the IC chip, characterized in that to start the business process when unlocked. 3. The external computer for updating the lock / unlock information stores first key information in a storage device thereof, and the IC chip is paired with the first key information in the storage device. The first key information and the second key information have a predetermined correspondence between the external computer that stores the second key information and updates the lock / unlock information and the IC chip. 3. The method according to claim 2, wherein the lock / unlock information is updated by the IC chip when the IC chip is authenticated. 4. Valuable securities, such as banknotes, gift certificates, stock certificates, bonds, etc., mounted with a non-contact readable / writable IC chip, wherein said IC chip can use said securities for business processing. And a storage device for storing rewritable lock / unlock information indicating the above and a program executable in the IC chip for referring to and updating the lock / unlock information in response to an external request. Securities, a management computer for instructing the IC chip to update the lock / unlock information, and requesting the IC chip to refer to the lock / unlock information, A business processing computer for starting business processing when lock information is in an unlocked state; a system for preventing unauthorized use of securities including an IC chip; . 5. The management computer for updating the lock / unlock information stores first key information in a storage device thereof, and the IC chip is paired with the first key information in the storage device. The first key information and the second key information have a predetermined correspondence between the management computer that stores the second key information and updates the lock / unlock information and the IC chip. 5. The system according to claim 4, wherein the IC chip updates the lock / unlock information when the IC chip is authenticated.