JP3521837B2 - Location information service system and method, and storage medium storing location information service program - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a location information service system and method, and a storage medium storing a location information service program, and more particularly, to a location of a calling terminal (or a receiving terminal) such as a public telephone. Taxi dispatch / road service / lost child who can notify the called terminal (or called terminal) and guarantee the security of location information
The present invention relates to a position information providing service for wandering elderly people search, peripheral information guidance, and the like, and a position information service system and method provided for billing processing to the same and a storage medium storing a position information service program.

[0002]

2. Description of the Related Art In a conventional system for providing position information of a calling terminal, whether the position information is retrieved from the telephone number of the calling terminal obtained by the caller number notification function at the called terminal,
In a relay server that receives a call from a calling terminal once and then relays the call to the called terminal, the positional information is retrieved from the telephone number of the calling terminal and the like is provided to the called terminal.

Further, conventionally, as a service for providing location information such as the sender's address to the called party, there has been proposed a calling place introduction service for the called party having a special telephone number such as a police or fire line (special feature). Kaihei 08-204835).
In this service, the center acquires position information by using the telephone number of the calling terminal or the terminal ID of the called party and provides the called party with the position information.

Further, Japanese Unexamined Patent Publication No. 08-204841 discloses a public telephone position information system in which a caller can notify the other party of his / her current position by using a public telephone and the caller himself / herself can also obtain the current position information. Has been done. In this system, the caller sends the telephone number or identification code of a public telephone to a base station (center), the base station searches for location information based on the information sent from this caller, and the search result is received by the receiving station. Send to. Specific examples of the location information include a location name and a map display.

Further, by using the caller number notification service started in recent years, it becomes possible to know the caller's telephone number even outside the switching network. Therefore, the telephone number and position information related to the telephone number are known. It becomes possible to provide the location information of the sender by constructing a database or the like in which is associated with.

[0006] On the other hand, in order to operate the location information service smoothly, not only can the user provide the appropriate information, but it is generally considered that appropriate billing for the service is required. Further, in order to properly charge the service charge, information security technology such as improvement of confidentiality of information related to the service and prevention of falsification of information is important.

According to the invention described in Japanese Patent Application No. 10-326075, for example, as a charging system for the location information service in the prior art, a digital public telephone compatible with an IC card is used to store in the vicinity of the public telephone. In the method of providing the destination guidance service, the call charge when dialing from the public telephone to the service center is settled from the IC card or cash.

Further, there is no mechanism for providing position information in response to a request from a called party (position information receiver) and charging for providing the position information.

[0009]

However, in the above-mentioned conventional system for retrieving location information by the called terminal, in the case where the telephone number of the calling terminal is private or non-public, the location information is retrieved. There is a problem that the telephone number cannot be used.

Further, in the system in which the relay server retrieves the position information, the relay server is required to have a function of relaying a communication call, and two telephone calls are required.

Further, in order to confirm whether the terminal is a contracted terminal, in the conventional authentication processing, the procedure for performing authentication between the terminal and the position information management center is performed by the terminal and the position information management center. Required for both parties.

When the terminal ID of the calling terminal of the caller, for example, the telephone number can be known, by constructing the position information database using the telephone number as an index, the calling terminal can be used both inside and outside the switching network. It is possible to provide position information regarding the installation location of the. However, the telephone number of the calling terminal is generally information that the called party cannot know unless the calling number notification service is used, and in fact, many subscriber terminals do not notify or keep the telephone number private. Exists. Furthermore, the public telephone number is not disclosed.

The present invention has been made in view of the above points, and the telephone number of the calling side is kept secret from the calling side and the called party, and the manager of the position information data tells the user of the position information to the user. It is an object of the present invention to provide a storage medium that stores a location information service system and method and a location information service program that can perform billing by means of charging.

A further object of the present invention is to provide a location information service system and method capable of authenticating whether the terminal is a valid destination terminal when providing location information to the destination terminal, and a storage medium storing a location information service program. Is to provide.

A further object of the present invention is to provide a location information service system and method that does not require an authentication function for both the receiving terminal and the location information management center, and a storage medium storing the location information service program. .

A further object of the present invention is not limited to a network for acquiring position information, but a position information service system and method capable of providing position information and billing processing, and a storage medium storing a position information service program. Is to provide.

[0017]

FIG. 1 is a block diagram of the first principle of the present invention.

[0018] The present onset Ming, outgoing fixed terminal (hereinafter, simply calling
Terminal 100) and an incoming fixed terminal (hereinafter, simply called
And referred) 300 terminals, a switching network 200 to set a call between the communication means between the terminal, the receiving terminal 300 the location information indicating the location of the originating terminal 100 connected to the switching network 200
A location information service system including a location information management center provided to the transmitting terminal 100, wherein the transmitting terminal 100 generates an encryption key, encrypts the location information using the key, and generates an encrypted location information. Means 110 and encryption means 110
The receiving terminal 300 has a transmitting terminal communication means 120 for transmitting the encrypted position information encrypted by the transmitting terminal to the receiving terminal 300 via the exchange network. The receiving terminal 300 communicates with the transmitting terminal 100 and the position information management center 400. Incoming terminal communication means 310 to perform
And a position information acquisition unit 320 that transfers the encrypted position information received from the transmitting terminal 100 to the position information management center 400 and acquires the decoded position information from the position information management center 400, and a position information acquisition unit 320. The location information management center 400 has a display means 330 for displaying the location information acquired in step 1, and the location information management center 400 requests the center communication means for communicating with the receiving terminal 300 and a request for decryption of the encrypted location information from the receiving terminal. Decryption means for obtaining the location information, decrypting the encrypted location information using the key used in the encryption means of the originating terminal to generate location information, and providing the location information to the receiving terminal via the center communication means. 410 and a charging unit 420 for charging a service charge for providing the location information to the receiving terminal 300 .

[0019] The onset Ming, used in the encryption unit of the transmitting terminal, and means for generating a word <br/> over click key is different each time encryption key for each encrypted by the random number, the master key for encryption And a means for encrypting the work key, and the decryption means of the position information management center uses the decryption master key corresponding to the encryption master key of the encryption means to encrypt the work key. Using the means for decrypting and the decrypted work key,
And means for decrypting the encrypted position information.

[0020] The onset Ming, the encryption unit of the transmitting terminal, means for generating a work key for encrypting the random number seed specific data, the positional information by using the work key for encrypting the cryptographic The decryption means of the position information management center has means for generating a work key for decryption using the data obtained by synchronizing the specific data of the encryption means as a seed, and the work key for decryption. And means for decrypting the encrypted position information using.

[0021] The present onset Ming, the encryption unit of the transmitting terminal, in addition to the key for encryption, means for generating an encrypted location information by encrypting the location information using the inbound telephone number to call In addition, the decryption means of the location information management center decrypts the encrypted location information using the incoming telephone number and the key used in the encryption means.

[0022] The onset Ming, the encryption unit of the transmitting terminal, in addition to the location information comprises means for generating an encrypted encrypted position information verification data for verifying in decoding, the location information management center, verifying extracted with decoded location information verification data by decoding means, compares the extracted and the verification data the verification data, consistent with long as the decoding is assumed to be legitimate Further has means.

[0023] The onset Ming, the encryption means of the originating terminal, in addition to the location information comprises means for generating an encrypted location information by encrypting the time stamp, the decoding means of the position information management center , Including a means for decrypting the encrypted location information using the key used in the encryption means, and extracting the location information and time stamp decrypted by the decryption means,
It further comprises a time stamp verification means for verifying whether the time stamp is within a predetermined time from the current time.

The present onset bright, in the receiving terminal has means for transmitting the seed data to generate the key for encryption to the originating terminal, the encryption means of the transmitting terminal is, seed data acquired from the receiver terminal The location information management center acquires seed data for generating a key for decryption from the receiving terminal by means of generating a key for encryption of location information by a random number using A means for generating a decryption key with a random number using the seed data as a seed and decrypting the encrypted position information is included.

[0025] The present onset Ming, in the position information management center,
It further comprises means for authenticating the receiving terminal.

[0026] The present onset Ming, in the position information management center,
A location information providing period is set in advance with the user of the receiving terminal, and when the encrypted location information is acquired from the receiving terminal, the decrypted location information is provided if it is within the location information providing period. Further has means.

[0027] The present onset Ming, outgoing fixed terminal (hereinafter, simply calling
And referred to as the terminal), the incoming fixed terminal (hereinafter, simply and terminating terminal
And referred), a switching network for setting up a call between the communication means between the terminal, in a system comprising a position information indicating the location of the originating terminal connected to the switching network from the location information management center that provides to the receiving terminal In the position information service method, the transmitting terminal generates an encryption key, encrypts the position information using the key to generate encrypted position information, and receives the encrypted position information via the exchange network. Send to the terminal, the receiving terminal,
The encrypted location information received from the calling terminal is transferred to the location information management center, and the location information management center acquires a request for decryption of the encrypted location information from the receiving terminal and is used by the encryption means of the sending terminal. The key is used to decrypt the encrypted location information to generate location information, which is provided to the receiving terminal, and a service charge for providing the location information to the receiving terminal is charged. The decrypted location information is acquired from and the location information is displayed.

The This onset Ming, when encrypting the location information at the originating terminal, each different encryption for each encrypted by the random number
Generating a work key that is a key use, it encrypts the work key using the master key, in the position information management center, when decrypting the encrypted location information, the master key for encryption used in the calling terminal The encrypted work key is decrypted using the decryption master key corresponding to, and the encrypted position information is decrypted using the decrypted work key.

[0029] The onset Ming, when encrypting the location information at the originating terminal, when encrypted location information by using the work key for encrypting and decrypting the encrypted position information in the position information management center to generate a work key for decoding the synchronized data with a specific data as a seed to decrypt the encrypted position information by using the work key for decoding.

[0030] The onset Ming, when encrypting the location information at the originating terminal, in addition to the key for encryption, to generate encrypted location information by using the incoming phone number to a call, the called terminal , the encrypted position information, grants call phone number, and forwards the position information management center, the location information management center, <br/> use the encrypted position information, when encrypted with the called telephone number calling terminal Decrypt using the entered key.

[0031] The onset Ming, at the originating terminal, when encrypting the location information, in addition to the position information, to generate encrypted location information obtained by encrypting verification data for verifying in decoding, positions The information management center decrypts the encrypted location information, extracts the decrypted location information and the verification data,
Comparing the verification data extracted and the verification data, decoded if the match is to be valid.

[0032] The onset Ming, at the originating terminal, in addition to the position information, to generate an encrypted location information by encrypting the time stamp, and sends to the called terminal, the position information management center, obtained from the called terminal the encrypted position information, transmission
The terminal decrypts the location information and the decrypted time stamp using the key used at the time of encryption, and verifies whether the time stamp is within a predetermined time from the current time.

[0033] The onset bright, in the receiver terminal, and transmits the seed data to generate the key for encryption to the originating terminal, at the originating terminal, the random number seed data acquired from the receiver terminal as a seed, position Generates a key for encrypting information, encrypts position information with the key for encryption and sends it out, and obtains seed data for generating a key for decryption from the receiving terminal at the position information management center. Then, a decryption key is generated by a random number using the seed data as a seed, and the encrypted position information is decrypted. This onset Ming, the location information management center authenticates the receiving terminal based on the authentication request from the receiver terminal.

[0034] The present onset Ming, in the position information management center,
A location information providing period is set in advance with the user of the receiving terminal, and when the encrypted location information is acquired from the receiving terminal, the decrypted location information is provided if it is within the location information providing period. .

[0035] The present onset Ming, outgoing fixed terminal (hereinafter, simply calling
And referred to as the terminal), the incoming fixed terminal (hereinafter, simply and terminating terminal
And referred), a switching network for setting up a call between the communication means between the terminal, the system comprising a location information indicating the location of the calling terminal connected to the switching network from the location information management center that provides to the receiving terminal , A storage medium storing a position information service program mounted on the transmitting terminal, which generates an encryption key, encrypts the position information using the key, and generates encrypted position information and step, encryption scan
The encrypted encrypted position information in step through a switching network, a calling terminal communication step of transmitting to the called terminal, the calling
A storage medium that stores a program to be executed by the communication terminal.
It

The present onset Ming, in the encryption step, a step of generating a work key each time for each more encryption random number <br/> a key for encryption, a work key using the master key for encryption the professional and a step of encrypting, to the originating terminal
It is a storage medium that stores grams.

The present onset Ming, in the encryption step, in addition to the key for encryption, step <br/> to generate encrypted location information by encrypting the location information using the inbound telephone number to call Is a storage medium that stores a program to be executed by the sending terminal.
It is the body.

The present onset Ming, in the encryption step, the steps of generating a key der Ru work key for different encryption each time for each encrypted by the random number, encrypting the location information using the work key Is executed by the calling terminal.
It is a storage medium that stores RAM.

The present onset Ming, in the encryption step, encryption and generating a work key for encrypting the location information using the work key for encrypting the random number seed specific data step To the calling terminal.
It is a storage medium storing a program.

The present onset Ming, in the encryption step, in addition to the position information, the step of generating an encrypted location information by encrypting the verification data for verifying in decoding, calling
A storage medium that stores a program to be executed by the communication terminal.
It

Main eventMing is,encryptionStepAt
In addition to the information, the incoming telephone number and time stamp
Generate encrypted location information by encryptingStep
To, A storage medium storing a program to be executed by the transmitting terminal
It is the body.

[0042] The onset Ming, in the encryption step, the random number seed data acquired from the receiver terminal as a seed, the step of generating a key for encrypting the location information, to the originating terminal
It is a storage medium that stores a program to be executed.

[0043] The present onset Ming, outgoing fixed terminal (hereinafter, simply calling
And referred to as the terminal), the incoming fixed terminal (hereinafter, simply and terminating terminal
And referred), a switching network for setting up a call between the communication means between the terminal, the system comprising a location information indicating the location of the calling terminal connected to the switching network from the location information management center that provides to the receiving terminal , a storage medium storing the location information service program to be installed in the receiving terminal, the called terminal communication step of performing communication with the calling terminal and the position information management center, encryption position information received from the calling terminal was transferred to the position information management center, the position information acquisition step that acquires position information decoded from the location information management center
And flop, and a display step of displaying the acquired position information by the position information obtaining step, to be executed by the receiving terminal program
It is a storage medium that stores a program.

[0044] The onset Ming, Te positional information acquisition step smell <br/>, the encrypted position information, is performed to impart an incoming telephone number, the step of transferring the location information management center, the receiving terminal
It is a storage medium that stores a program that causes it.

[0045] The onset Ming, further the step of transmitting the seed data to generate the key for encryption to the originating terminal, the incoming end
It is a storage medium that stores a program to be executed at the end.

[0046] The present onset Ming, outgoing fixed terminal (hereinafter, simply calling
And referred to as the terminal), the incoming fixed terminal (hereinafter, simply and terminating terminal
And referred), a switching network for setting up a call between the communication means between the terminal, the system comprising a location information indicating the location of the calling terminal connected to the switching network from the location information management center that provides to the receiving terminal Is a storage medium storing a position information service program mounted on the device of the position information management center, which is a center communication system for communicating with a receiving terminal .
And a step, from the receiving terminal, from the verification data and position information
Get the request to decrypt the encrypted location information
Using the key used by the calling terminal, it decrypts the encryption of the location information to generate location information, a decoding step of providing to the called terminal via the center communication step, the location information to the called terminal A billing station that charges the service fee to be provided.
Is a storage medium that stores a program that causes a device of the location information management center to execute the backup .

[0047] The onset Ming, the decoding step, using a decoded master key corresponding to the encryption master key that is used for encryption in the transmitting terminal, the encrypted word over click at the originating terminal decoding a key, by using the work key is decrypted, the storage medium of step <br/> and to decrypt the encrypted position information, storing a program to be executed by the device of the position information management center Is.

[0048] The onset Ming, the steps in the decoding step, to generate a work key for decoding the synchronized data with the specific data used to generate the work key for encrypting at the originating terminal as a seed, using the work key for decoding and a step of decrypting the encrypted location information. This onset Ming,
In the decoding step, stearyl decrypted using the encryption position information used when terminating telephone number and the encryption key
Is a storage medium that stores a program that causes a device of the location information management center to execute the backup .

[0049] The onset bright extracts the verification data decoded location information decoding step, and comparing the verification data extracted and the verification data, decoding valid if the match The storage medium further stores a program for causing a device of the position information management center to execute a certain verification step .

[0050] This onset Ming, the decoding step, the position information decoded from the encrypted position information, contact to the originating terminal
The time stamp verification step that extracts the time stamp acquired from the time measuring means when the position information is encrypted and verifies whether the time stamp is within a predetermined time from the current time.
Is a storage medium that stores a program that causes a device of the location information management center to execute the backup .

[0051] The onset bright obtains the seed data to generate the key for decryption from the receiver terminal, and generates a decryption key by random number seed to seed data, the encrypted position information It is a storage medium that stores a program that causes a device of a position information management center to execute the step of decrypting.

[0052] The onset Ming, further the step of authenticating the receiving terminal, a storage medium storing a program to be executed by the device of the position information management center.

[0053] This onset bright, when the receiving terminal has acquired the encrypted position information, if it is advance in the position information providing period was Me determined between the user of the receiving terminal, the decoded position The storage medium further stores a program for causing the device of the position information management center to execute the step of providing information.

As described above, in the position information service system of the present invention, the telephone number of the calling side (public telephone) is concealed from the caller or the called party, and the position information (service) of the called party is stored. It becomes possible to charge for the provision.

Further, in the position information service system, it becomes possible to verify the validity of the receiving terminal and provide the position information when the verification result is correct.

In addition, the location information service system has a means for performing one-time encryption in the transmitting terminal, which encrypts the location information for one time and transmits it to the receiving terminal, and the receiving terminal decrypts it in the location information management center. By obtaining the position information by making a request, it is possible to reliably charge from the receiving terminal when the position information is acquired, and it becomes impossible to reuse the data.

Further, since the location information management center has means for authenticating / billing the decryption request, it becomes possible to provide information / billing according to the active request of the called party, and
Requests from non-contractors to the location information management center can be prevented.

Further, since the authentication fee is charged between the position information management center and the receiving terminal and the network service is not used, the network for acquiring the position information is not limited.

Further, the receiving terminal telephone number is used at the time of one-time encryption at the transmitting terminal, and the receiving terminal telephone number is inspected at the time of decryption at the location information management center, whereby the receiving terminal is specified, so that the receiving terminal is identified. Authentication becomes easier.

[0060]

BEST MODE FOR CARRYING OUT THE INVENTION According to the present invention, an ID or position information stored in a public telephone is encrypted and sent to a service device, and the service device requests the position information management center to decrypt it. In a telephone call from a public telephone whose telephone number is private or non-public, position information is provided to the service device, and the service device can use the position information to provide a service.

Further, it is possible to charge the receiving terminal (user) when using the service using the position information.

Further, the position information management center provides the position information only to the legitimate incoming terminal. The following methods are available for this purpose.

(1) The encrypted position information is sent from the transmitting terminal and decrypted at the position information management center.

(2) At the transmitting terminal, the position information is encrypted by using the work key generated by a random number, the work key is encrypted by using the encryption master key, and the encryption of the transmitting terminal is performed by the position information management center. The work key encrypted using the decryption master key corresponding to the master key for decryption is decrypted, and the encrypted position information is decrypted using the decrypted work key.

(3) The position information is encrypted at the transmitting terminal by using a random number based on the specific data as a seed using a work key for encryption, and the data synchronized with the specific data at the time of encryption at the position information management center. A work key for decryption is generated by using as a seed, and the encrypted position information is decrypted using the work key.

(4) The transmission terminal sends out the encrypted position information encrypted using the incoming telephone number, and the position information management center decrypts it.

(5) The transmitting terminal adds the verification data to the encrypted position information and sends it out, and the position information management center decrypts it.

(6) The transmitting terminal adds the time stamp to the encrypted position information and sends the encrypted position information. The position information management center verifies the time range of the time stamp and decrypts the time stamp if it is valid.

(7) Using the seed notified from the receiving terminal, the transmitting terminal generates an encryption key, encrypts the location information, and the location information management center also uses the seed to decrypt. The key is generated and the encrypted position information is decrypted.

(8) At the location information management center, only the encrypted location information from the receiving terminal within the predetermined contract period is decrypted.

Further, the combination of (1) to (8) verifies the validity of the receiving terminal and decrypts the encrypted position information.

[0072]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 shows the system configuration of the first embodiment of the present invention. The system shown in FIG.
Telephone switching network 200 (hereinafter referred to as switching network), receiving terminal 3
00 Call location information management center 400.

The transmitting terminal 100 has a function of concealing and holding the position information and the master key for encryption, encrypting the position information at the time of transmission, and transmitting it as encrypted position information. The communication unit 120 is included.

The encryption unit 110 has a function of using the master key to encrypt the position information for one time. The one-time encryption will be described later.

The communication unit 120 has a function of transmitting the encrypted position information encrypted by the encryption unit 110 when a call is made, in addition to the function of a normal telephone.

The switching network 200 is a network having a function of transmitting information between users, and the exchange 210 is a telephone exchange for transmitting information between users.

The receiving terminal 300 has a function of decrypting and displaying the transmitted encrypted position information using the position information management center 400, in addition to the normal telephone function, and the communication unit 3
10, a position information acquisition unit 320 and a display unit 330.

The communication unit 310 has a function of passing the encrypted position information to the position information acquisition unit 320 when the encrypted position information is received, in addition to the usual communication means of the telephone.

Upon receiving the encrypted position information from the communication unit 310, the position information acquisition unit 320 confirms the user's intention to decrypt by inputting a dial button or the like, and when the intention is confirmed, the position information acquisition unit 320 is connected to the position information management center 400. Then, by sending the encrypted position information, after obtaining the position information, it is interpreted according to the position information format and converted into a displayable format,
It is passed to the display unit 330.

The display section 330 is a display device having a function of displaying the position information and the intention confirmation message received from the position information acquisition section 320.

The location information management center 400 uses the receiving terminal 3
The encrypted position information is decrypted in accordance with the encrypted position information decryption request from 00. At this time, the requester is identified, and the identified requester is charged (for example, prepaid charging). The decryption unit 410 and the charging unit 4 are included.
20 and a prepaid frequency DB 3430.

The decryption unit 410 decrypts the encrypted position information received using the stored master key, confirms the telephone number of the receiving terminal 300, and receives the receiving terminal 30.
0, or by authenticating an IC card or the like connected to the receiving terminal 300 and confirming the requester ID / password, the requester is identified, and the identified requester (requester I
When the billing unit 420 succeeds in billing D), it has a function of returning the decrypted position information to the receiving terminal 300. Authentication of IC cards and the like will be described later. Billing unit 4
20 uses the prepaid frequency DB 430 to search for the requester ID received from the decryption unit 410, and requester I
The registered prepaid frequency is subtracted from D, and whether the subtraction succeeds or fails is returned to the decoding unit 410. The prepaid frequency DB 430 stores the prepaid frequency for the requester ID (the frequency of the request paid in advance).
Is a registered database.

FIG. 3 is a sequence chart in the system of the first embodiment of the present invention. The operation of the above configuration will be described with reference to FIG.

At the calling terminal 100, the caller dials the telephone number of the called terminal 300 (step 50).
1).

When the telephone number is dialed, the encryption unit 1
10, the receiving terminal 30 dialed with the master key
The location information is encrypted for one time using the telephone number of 0 (step 502). The one-time encryption will be described later. After that, the called terminal 300 is called and the encrypted position information is transmitted (step 503). When ISDN is used for transmission, it can be transmitted by UUI (user / user information) at the time of setup.
If it is other than SDN, it is transmitted by a modem signal, a DTMF signal, out-channel (outside voice band) communication, or the like. When it is necessary to send the one-time encrypted work key, it is also sent.

Switching network 200 transmits the encrypted position information received from transmitting terminal 100 to receiving terminal 300 (step 504).

Upon receipt of the encrypted position information at the receiving terminal 300, the called party goes off-hook (step 505), and the receiving terminal 300 returns a response signal to the switching network 200 (step 506).

When the exchange 200 receives the response signal, the call is connected between the calling terminal 100 and the called terminal 300 (step 507).

A display for confirming the acquisition of the position information is displayed on the display unit 330 from the position information acquisition unit 320 of the receiving terminal 300, the callee is prompted to input, and the intention to decrypt the position information is confirmed (step 508). ). There is no need to do it if there is a default setting. In the following description, a case where there is an intention to decode the position information will be described.

In order to decrypt the received encrypted position information, the position information acquisition unit 320 of the receiving terminal 300 connects to the position management center 400 via a telephone exchange network, the Internet, a dedicated line, etc., and stores the encrypted position information. It is transmitted (step 509). If it is necessary to transmit the work key encrypted by the one-time encryption, it is also transmitted. The receiving terminal 300 reads the ID of the inserted card (prepaid card) (step 510), and transmits the card ID and the encrypted position information from the position information acquisition unit 320 to the position information management center 400 (step 511).

In the position information management center 400, in order to authenticate the card, a random number is generated using a random number generation function (step 512), and the incoming terminal 30 is issued as an authentication request.
0 (step 513). At the receiving terminal 300, the secret data corresponding to the ID and the transmitted random number are input, and response data is generated using the same one-way function (MD5 etc.) as the location information management center 400 (step 514), the response data is returned to the position information management center 400 as an authentication response (step 515). In the location information management center 400,
Authentication response received from card and location information management center 4
On the 00 side, the one-way function is used to compare with the static data to check whether they are the same (step 51).
6).

At the location information management center 400, the encrypted location information received by the decryption unit 410 is decrypted using the master key and the telephone number of the receiving terminal 300 (step 51).
7).

In the billing unit 420, the card ID of the receiving terminal 300 registered as the requester ID is used as an index to search the prepaid frequency DB 430, and if there is a frequency that can be charged, subtract it to obtain the decrypted position information. It is returned to the receiving terminal 300. If it is not registered or there is no frequency, an error is returned to the receiving terminal 300 (step 518).

The location information management center 400 transmits the decrypted location information to the receiving terminal 300 (step 5).
19).

In the receiving terminal 300, the positional information acquisition unit 32 receives the positional information sent from the positional information management center 400.
It is received at 0 and is displayed on the display unit 330 including a display or the like provided in the receiving terminal 300 (step 520).

The above "one-time encryption" will be described. “One-time encryption” is an encryption method that can be decrypted and obtains different encryption results each time when certain specific data is encrypted and transmitted.

FIG. 4 is a diagram for explaining one-time encryption in the first embodiment of the present invention. The numbers in the circles in the figure correspond to the numbers in the following description.

In the one-time encryption, data is encrypted by using a different encryption key (work key) generated by a random number and a master key each time, so that a different encryption result is obtained each time. Decryption is a "key distribution method"
Another key (master key) on the transmission side is used by the method known as "(Introduction to Cryptographic Theory), Eiji Okamoto, Kyoritsu Shuppan, and" Public Telephone Position Information Utilization System Device "Japanese Patent Application No. 11-253640) This can be realized by encrypting the encryption key (work key) by using it and delivering it to the receiving side. other,
By using a random number generated by using data (clock or the like) synchronized on the transmitting side and the receiving side as an encryption key (work key), different encryption results can be obtained each time, and decryption can be realized. Further, in the case of encrypting the position information at the transmitting terminal 100, the position information is encrypted based on the work key generated by and the position information, and at the position information management center 400, the encrypted position information is decrypted. The position information is acquired by decrypting using the work key and the encrypted position information that were acquired when it was decrypted by.

[Second Embodiment] In this embodiment, the receiving terminal can be authenticated only by transmitting the information received from the calling terminal and the telephone number of the receiving terminal to the location information management center. Will be explained.

The present embodiment has the same configuration as that of the first embodiment described above, but the location information management center 400 is different in the authentication processing of the receiving terminal 300. Therefore, the system configuration diagram in this embodiment is omitted.

FIG. 5 is a sequence chart of the second embodiment of the present invention.

At the calling terminal 100, the caller dials the telephone number of the called terminal 300 (step 60).
1).

When the telephone number is dialed, the encryption unit 1
10, the receiving terminal 30 dialed with the master key
The location information is encrypted for one time using the telephone number of 0 (step 602). The one-time encryption will be described later. Then, the called terminal 300 is called and the encrypted position information is transmitted (step 603). When ISDN is used for transmission, it can be transmitted by UUI (user / user information) at the time of setup.
If it is not SDN, it is transmitted by a modem signal, a DTMF signal, out-channel (outside voice band) communication, or the like. When it is necessary to send the one-time encrypted work key, it is also sent.

Switching network 200 transmits the encrypted position information received from transmitting terminal 100 to receiving terminal 300 (step 604).

Upon receipt of the encrypted position information at the receiving terminal 300, the called party goes off-hook (step 605), and the receiving terminal 300 returns a response signal to the switching network 200 (step 606).

When the exchange 200 receives the response signal, the call is connected between the calling terminal 100 and the called terminal 300 (step 607).

A display for confirming the acquisition of the position information is displayed on the display unit 330 from the position information acquisition unit 320 of the receiving terminal 300, the callee is prompted to input, and the intention to decrypt the position information is confirmed (step 608). ). There is no need to do it if there is a default setting. In the following description, a case where there is an intention to decode the position information will be described.

In order to decrypt the received encrypted position information, the position information acquisition section 320 of the receiving terminal 300 connects to the position management center 400 via a telephone exchange network, the Internet, a leased line, etc. The telephone number of the receiving terminal 300 is transmitted (step 609). If it is necessary to transmit the work key encrypted by the one-time encryption, it is also transmitted.

In the receiving terminal 300, the telephone number of the own terminal (incoming terminal telephone number), the telephone number called from the transmitting terminal 100 (incoming telephone number), and encrypted position information are managed by the position information acquiring unit 320. The data is transmitted to the center 400 (step 610).

In the location information management center 400, the decryption unit 410 decrypts the encrypted location information by the same method as in the first embodiment (step 611) and verifies the decryption (step 612). The billing unit 420 performs postpaid billing processing for the receiving terminal 300 (step 613). However, if the verification result is not correct, the charging process is not performed. When the decryption verification is correct, the decryption unit 410 transmits the location information to the receiving terminal 300 (step 614), and the receiving terminal 300 acquires the location information sent from the location information management center 400. It is received by the unit 320, and is displayed on the display unit 330 including the display or the like provided in the receiving terminal 300 (step 615).

Next, the verification of the correctness of the above decoding will be described.

FIG. 6 is a diagram for explaining verification of correctness of decryption according to the second embodiment of the present invention. Shown in the figure
The numbers in the figure correspond to the numbers in the following description.

In the encryption unit 110 of the transmitting terminal 100, a random number is generated to generate a work key, the work key is encrypted using the master key, and the location information management center 40
Send to 0. The position information management center 400 decrypts the work key by using the acquired encrypted work key and master key.

In the encryption section 110 of the transmitting terminal 100,
The location information management center 400 encrypts the location information and the verification data, the incoming telephone number to be called, and the work key.
Send to. FIG. 7 shows an example of the position information frame to which the verification data at this time is added. The figure (A) shows the format of the encrypted position information frame, (B) shows an example of the type number definition, and (C) shows an example of the encrypted position information frame. As shown in the figure, the encrypted position information frame is
Number of types of position information included in the frame (fixed length), verification data for decoding verification (fixed length or check code), type number indicating the type of position information (fixed length), number of octets in the data field It is composed of the data length (fixed length) represented and the position information data (variable length) for each type. The classification number is, for example, latitude / longitude = 1, address =
2, postal code = 3, map code = 4, and customization information (building name, floor number, room number, etc.) = 5. The verification data includes, for example, latitude / longitude, address, and customization information, as shown in FIG.

At the location information management center 400, the encrypted location information received from the calling terminal 100 is decrypted using the work key and the incoming telephone number to obtain location information and verification data. The decrypted verification data is compared with the verification data held in the location information management center, and if they match, the decryption is verified as valid.

[Third Embodiment] In this embodiment, an authentication method for determining whether or not the user of the receiving terminal requests the position information within a predetermined time limit will be described. In the present embodiment, it is used when the location information is provided with a fixed contract or a limited period.

The system configuration of this embodiment is the same as that of the first embodiment described above, so the system configuration diagram is omitted.

In this embodiment, the location information management center 400
In the decryption unit 410, a predetermined fixed-term contract or a predetermined time limit is held for each called party (user), and when the encrypted position information and the called terminal telephone number are received from the called terminal 300 as an authentication request, Based on the called terminal telephone number, it is determined whether the called party is in a fixed-term contract or whether location information can be provided within a predetermined time limit. It decrypts and transmits the position information to the receiving terminal 300. The other operations are the same as those of the fifth and second embodiments described above.

[Fourth Embodiment] In the present embodiment, in addition to the position information, the encryption unit 110 of the transmitting terminal 100
Incoming terminal 300 with time stamp added and encrypted
An example of transmitting the data will be described.

At the originating terminal 100, a clock, etc. in its own terminal,
The time stamp is acquired from the time measuring means, the time stamp is added to the position information, the position information is encrypted with the master key, and the encrypted position information is transmitted to the receiving terminal 300.

The receiving terminal 300 transmits the encrypted position information including the time stamp acquired from the transmitting terminal 100 and encrypted to the position information management center 400. As a result, the decryption unit 410 of the location information management center 400
Extracts the time stamp by decrypting the encrypted position information with the master key. The present time is acquired from the time measuring means in the own device, and it is verified whether the extracted time stamp is within a predetermined time. If the verification is correct, the decrypted position information is provided to the receiving terminal 300. To do.

Although an example of using the master key for encryption and decryption has been described above, the one-time encryption method shown in FIG. 4 may be applied.

[Fifth Embodiment] In this embodiment, the "seed" used for the encryption key is transmitted from the receiving terminal 300 to the transmitting terminal 100, and the encrypting unit 110 of the transmitting terminal 100 causes the receiving terminal 100 to transmit the "seed". The position information and the verification data are encrypted using the “seed” and the master key acquired from 300 and transmitted to the receiving terminal 300 as encrypted position information.

At the receiving terminal 300, the same "seed" as that transmitted to the transmitting terminal 100 is added to the encrypted position information, and the encrypted position information is transmitted to the position information management center 400.

Decoding section 41 of location information management center 400
In 0, the encrypted position information is decrypted using the master key and the “seed” (for example, random number or mark). At this time,
The “seed” used for encryption at the calling terminal and the called terminal 300
If the “seed” sent from the device does not match, it can be seen that after the encrypted position information is sent from the sending terminal 100, a mismatch of the verification data has occurred and the information has been spoofed. The location information management center 400 does not send location information to the receiving terminal 300 unless the verification data match.

[Sixth Embodiment] In this embodiment, an example will be described in which the location information management center 300 authenticates the receiving terminal 300.

In the location information management center 400, when the encrypted location information is sent from the receiving terminal 300, a random number is generated by a random number generation function or the like and is transmitted to the receiving terminal 300, and at the same time, a one-way function (MD5, etc.). ) Is used to generate response data. The receiving terminal 300 generates response data using a one-way function (MD5 or the like) and transmits it to the position information management center 400. In the decryption unit 410 of the location information management center 400, the response data transmitted from the receiving terminal 300 and the response data generated in the own device are compared, and if they are the same, the authentication is successful and the decrypted location information is obtained. I will provide a. On the other hand, if they do not match, it is determined that the authentication has failed and the position information is not provided.

[Seventh Embodiment] In the following embodiment, the case where the operation of each device is constructed as a program will be described. In this embodiment, a program installed in the transmitting terminal will be described.

FIG. 8 is a flow chart of a program installed in the transmitting terminal according to the seventh embodiment of the present invention.

Step 701) If the user goes off-hook, the process proceeds to step 702, and if not, the process waits.

Step 702) The user inputs the telephone number of the called terminal.

Step 703) Using the master key, the position information is one-time encrypted by the above method to generate encrypted position information.

Step 704) The call is made to the called terminal and the encrypted position information is transmitted. At this time, if ISDN, it is possible to send by UUI at the time of setup.
If it is other than DN, it is transmitted by a modem signal, a DTMF signal, out-channel communication, or the like.

Step 705) If the connection with the receiving terminal is successful, the process proceeds to step 706, and if not, the process proceeds to step 709.

Step 706) The call with the receiving terminal is started.

Step 707) If a disconnection request is issued from the receiving terminal or the terminal itself, or if the terminal is on-hook, the process proceeds to step 708.

Step 708) Call disconnection processing is performed.

Step 709) If the connection with the called terminal fails, error processing is performed. In addition, in the above step 703, the encrypted position information may be generated by encrypting the incoming telephone number, the verification data and the like in addition to the position information. Further, a time stamp may be acquired from the time measuring means together with the position information, and may be transmitted to the receiving terminal together with the encrypted position information.

In step 702, if the "seed" for key generation has been acquired from the receiving terminal 300, a work key is generated by using a one-way function for the seed and the master key to generate a one-way key. Time encryption may be performed.

[Eighth Embodiment] In this embodiment, the operation of the program installed in the receiving terminal will be described.

FIG. 9 is a flow chart of a program installed in the receiving terminal according to the eighth embodiment of the present invention.

Step 801) If an incoming call is received from the calling terminal via the exchange network, the process proceeds to step 802, and if not, the process waits.

Step 802) When there is an incoming call, a ring tone sounds.

Step 803) It is determined whether the connection with the calling terminal is successful. If the connection is successful, the procedure goes to step 804, and if not, the procedure goes to step 815.

Step 804) A call with the calling terminal is started and a response signal is returned to the calling terminal. If the encrypted position information encrypted by the transmitting terminal is included, the information is also received.

Step 805) When the encrypted position information is acquired from the transmitting terminal, the process proceeds to step 806,
Otherwise, it moves to step 813.

Step 806) When the encrypted position information is acquired, the encrypted position information is extracted.

Step 807) Confirm with the user the intention to decrypt the position information. If set by default, the user is not inquired.

Step 808) If the user has the intention of decryption, the process proceeds to step 809, and if not, the process proceeds to step 813.

Step 809) Connect to the location information management center and transmit the encrypted location information and the telephone number of the receiving terminal.

Step 810) If the error is returned from the location information management center, the process proceeds to step 816, and if not, the process proceeds to step 811.

Step 811) The decrypted position information is received from the position information management center.

Step 812) The acquired position information is displayed on the display or the like.

Step 813) If a disconnection request or on-hook is issued from the calling terminal or its own terminal, the process proceeds to step 814. If not, the disconnection request or on-hook is awaited.

Step 814) The call is disconnected.

Step 815) If the connection with the calling terminal fails, a predetermined error process is performed.

Step 816) When an error is received from the position information management center, predetermined error processing is performed.

At step 801, the "seed" for generating the encryption key is sent to the transmitting terminal, and the "seed" for generating the decryption key is sent to the location information management center. You may send it.

[Ninth Embodiment] In this embodiment, the operation of the program installed in the position information management center will be described.

FIG. 10 is a flow chart of a program installed in the location information management center of the ninth embodiment of the present invention.

Step 901) When the encrypted position information and the telephone number of the called terminal (and the called telephone number of the called terminal) are received from the called terminal, the process proceeds to step 902, and when not received, stands by. To do.

Step 902) The encrypted position information obtained from the receiving terminal is decrypted. At this time, if a fixed-term contract or a contract with a limited time limit is concluded with the user of the receiving terminal, the time limit is checked, and if the time limit is exceeded, the decryption is not performed.

Step 903) The above-mentioned decryption validity is checked, and if the decryption is proper, step 9
04, otherwise, to step 907.

Step 904) Using the telephone number of the receiving terminal registered as the requester ID as an index,
The prepaid frequency DB is searched, and if there is a frequency that can be charged, it is subtracted. In addition, if a regular contract or a contract with a limited time limit is performed, postpaid billing processing is performed.

[0166] Step 905) If the charging is successful, the process proceeds to step 906, and if not, the process proceeds to step 907.

Step 906) The decrypted position information is transmitted to the receiving terminal.

In step 902 described above, as the object of decryption, in addition to the encrypted position information, it is also possible to decrypt the information (A) including the incoming telephone number in the encrypted position information. .

In step 902, when the "seed" for the decryption key is acquired from the receiving terminal 300, the work key is generated using the master key and the one-way function for the seed. , May be decrypted.

In step 903, the verification data included in the encrypted position information is compared with the verification data stored in the own device to check the validity of the decryption. It is also possible to verify the identity.

It is also possible to combine various embodiments described above, and it is possible to provide a more reliable service.

The representative embodiments of the present invention have been described above, but the present invention is not limited to the above embodiments, and various modifications and applications are possible within the scope of the claims.

[0173]

As described above, according to the present invention, it is possible to charge the called party for each location call provided to the user.

Further, when charging the called party, it becomes possible to confirm the intention to confirm the consent to the charging of the called party.

Further, the receiving terminal can display the position information provided by the exchange. Further, the reception terminal can perform the authentication by simply notifying the location information management center of the information received from the transmission terminal and the telephone number of the reception terminal, and the reception terminal does not need an authentication means.

Further, the location information service system has means for carrying out one-time encryption in the originating terminal, and the location information is encrypted in one time and transmitted to the receiving terminal, and the receiving terminal decrypts it in the location information management center. By obtaining the position information by making a request, it is possible to reliably charge from the receiving terminal when the position information is acquired, and it becomes impossible to reuse the data.

Further, since the location information management center has means for authenticating / billing the decryption request, it becomes possible to provide information / billing according to the active request of the called party, and
Requests from non-contractors to the location information management center can be prevented.

[0178] Further, since the authentication fee is charged between the position information management center and the receiving terminal and the network service is not used, the network for acquiring the position information is not limited.

Also, the receiving terminal telephone number is used at the time of one-time encryption at the transmitting terminal, and the receiving terminal telephone number is inspected at the time of decryption at the location information management center to identify the receiving terminal. Authentication becomes easier.

Further, it is possible to provide the position information with a contract period or a limited period which is predetermined with the called party (user).

[Brief description of drawings]

FIG. 1 is a principle configuration diagram of the present invention.

FIG. 2 is a system configuration diagram of a first embodiment of the present invention.

FIG. 3 is a sequence chart in the system according to the first embodiment of this invention.

FIG. 4 is a diagram for explaining one-time encryption in the first embodiment of the present invention.

FIG. 5 is a sequence chart in the system of the second embodiment of the present invention.

FIG. 6 is a diagram for explaining verification of correctness of decryption according to the second embodiment of the present invention.

FIG. 7 is an example (for verification) of encrypted position information according to the second embodiment of the present invention.

FIG. 8 is a flowchart of a program installed in a transmitting terminal according to a seventh embodiment of the present invention.

FIG. 9 is a flow chart of a program installed in an incoming call terminal according to an eighth embodiment of the present invention.

FIG. 10 is a flowchart of a program installed in the location information management center according to the ninth embodiment of this invention.

[Explanation of symbols]

100 outgoing fixed terminal, outgoing terminal 110 encryption means, encryption section 120 outgoing terminal communication means, communication section 200 exchange network 210 exchange 300 incoming fixed terminal, incoming terminal 310 incoming terminal communication means, communication section 320 position information acquisition means, position Information acquisition unit 330 Display unit, display unit 400 Position information management center 410 Decoding unit, decoding unit 420 Billing unit, billing unit 430 Prepaid frequency DB

Front page continuation (51) Int.Cl. ⁷ Identification code FI H04M 17/00 H04M 17/00 (72) Inventor Shinichi Mine 2-3-1, Otemachi, Chiyoda-ku, Tokyo Inside Nippon Telegraph and Telephone Corporation (56 ) References JP-A-9-18588 (JP, A) JP-A 2000-78667 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) H04M 3/42-3/58 H04M 15 / 00-15/38 H04M 17/00-17/02

Claims (38)

(57) [Claims] 1. An outgoing fixed terminal (hereinafter simply referred to as an outgoing terminal).
And be), called fixed terminal (hereinafter, simply referred to as the called terminal)
And a location information service system comprising a switching network for establishing a call between communication means between terminals, and a location information management center for providing the receiving terminal with location information indicating the location of the calling terminal connected to the switching network. Wherein the transmitting terminal generates an encryption key, encrypts the position information by using the key, and generates encrypted position information; and an encryption unit that is encrypted by the encryption unit. A caller terminal communication means for transmitting the encrypted position information to the callee terminal via the exchange network, the callee terminal communicating with the caller terminal and the position information management center. Means, a location information acquisition means for transferring the encrypted location information received from the transmitting terminal to the location information management center, and obtaining the decrypted location information from the location information management center, and the location information acquisition means. And a display unit for displaying the position information acquired in 1., the position information management center, the center communication unit for communicating with the receiving terminal, and the decryption of the encrypted position information from the receiving terminal. Is obtained, the encrypted position information is decrypted by using the key used by the encryption means of the transmitting terminal to generate position information, and the location information is transmitted to the receiving terminal via the center communication means. location service system comprising: the decoding means for providing, and charging means for charging a service charge for providing the location information to the receiving terminal. 2. The encryption means of the transmission terminal, means for generating a different encryption work key for each encryption by a random number, and encryption of the work key using an encryption master key. The decryption means of the position information management center decrypts the encrypted work key using a decryption master key corresponding to the encryption master key of the encryption means. The position information service system according to claim 1, further comprising: means for encrypting, and means for decrypting the encrypted location information using the decrypted work key. 3. The encryption means of the transmission terminal is different every time encryption is performed by a random number using a specific data as a seed.
Means for generating a key der Ru work key for encryption that includes a means for encrypting said location information by using the work key for the encryption, the decryption means of said location information management center Means for generating a work key for decryption by using the data obtained by synchronizing the specific data of the encryption means as a seed; and means for decrypting the encrypted position information using the work key for decryption The location information service system according to claim 1, including the following. 4. The encryption means of the calling terminal includes means for encrypting position information by using a called telephone number to make a call, in addition to an encryption key, to generate encrypted position information. The decryption means of the location information management center decrypts the encrypted location information using an incoming telephone number and a key used in the encryption means.
Location information service system described. 5. The encryption means of the transmitting terminal includes means for generating encrypted position information in which, in addition to the position information, verification data for verification at the time of decryption is encrypted, and the position information. management center extracts the decrypted position information and the verification data has been in the decoding means, compares the extracted and the verification data the verification data, and decoding if the match is legitimate The position information service system according to any one of claims 1 to 4, further comprising: 6. The decryption means of the location information management center, wherein the encryption means of the transmission terminal includes means for producing encrypted location information by encrypting a time stamp in addition to the location information. Includes means for decrypting the encrypted location information using the key used in the encryption means, extracting the location information and time stamp decrypted by the decryption means, and the time stamp 5. The position information service system according to claim 1, further comprising a time stamp verification means for verifying whether it is within a predetermined time from the current time. 7. The receiving terminal has means for transmitting seed data for generating an encryption key to the transmitting terminal, and the encrypting means of the transmitting terminal acquires from the receiving terminal. The position information management center includes means for generating a key for encryption of the position information by a random number using the seed data as a seed; The position information service system according to claim 1, further comprising means for acquiring data, generating a decoding key by a random number using the seed data as a seed, and decoding the encrypted position information. 8. The position information service system according to claim 1, wherein the position information management center further comprises means for authenticating the receiving terminal. 9. The location information management center defines a location information providing period with a user of the receiving terminal in advance, and provides the location information when the encrypted location information is acquired from the receiving terminal. The position information service system according to claim 1, further comprising means for providing the decoded position information when the time is within the period. 10. CallingFixedTerminal(Hereinafter, simply referred to as the calling terminal.
You)And incomingFixedTerminal(Hereinafter, simply referred to as the receiving terminal)
And a switching network for setting up a call between communication means between terminals,
The location information indicating the location of the calling terminal connected to the exchange network is
System consisting of location information management center provided to the receiving terminal
In the location information service method in The calling terminal is Generate a key for encryption and use the key to encrypt the location information.
Encryption to generate encrypted location information, The encrypted location information is transferred to the receiving end via the exchange network.
Send at the end, The receiving terminal is The encrypted location information received from the originating terminal
Transfer to the information management center, The location information management center is Request for decryption of the encrypted location information from the receiving terminal
Key obtained and used by the encryption means of the originating terminal
To decrypt the encrypted location information to obtain the location information.
Generated and provided to the receiving terminal, The location informationThe aboveCharge the service charge provided to the receiving terminal
Money In the receiving terminal,The above Obtain the decrypted location information from the location information management center.
Got and Position information server characterized by displaying the position information
Screw method. 11. When encrypting the position information in the transmitting terminal, a work key, which is a key for encryption, which is different for each encryption is generated by a random number, and a master key is used. wherein encrypting the work key in the position information management center, when decoding the encrypted position information, using the master key for decoding corresponding to the master key for encryption used in the calling terminal Te The location information service method according to claim 10, wherein the encrypted work key is decrypted, and the encrypted location information is decrypted using the decrypted work key. 12. When encrypting the position information at the transmitting terminal, the position information is encrypted using a work key for encryption.
And, when decoding the encrypted location information at the location information management center, to generate a work key for decoding the data synchronized with the specific data as a seed, with a work key for the decryption The position information service method according to claim 10, wherein the encrypted position information is decrypted. 13. When the position information is encrypted at the calling terminal, the encrypted position information is generated by using a called telephone number to make a call in addition to an encryption key. , the encrypted position information, grants call phone number, and forwards before Symbol position <br/> location information management center, in the position information management center, the encrypted position information, the incoming and outgoing phone number At the terminal
11. Decryption using the key used at the time of encryption.
Location information service method described. 14. In the transmitting terminal, when the position information is encrypted, in addition to the position information, encrypted position information in which verification data for verifying at the time of decryption is encrypted is generated, the location information management center to decrypt the encrypted position information, decoded position information extracted verification data, comparing the verification data extracted and the verification data, if the matching decryption Claim 10 or 1 which is justified
Location information service method described in 3. 15. The transmitting terminal, in addition to the position information, generates encrypted position information in which a time stamp is encrypted and transmits the encrypted position information to the receiving terminal, and in the position information management center, the receiving terminal. The encrypted location information obtained from
11. The decryption is performed using a key used at the time of encryption at the transmitting terminal, the decrypted position information and the time stamp are extracted, and it is verified whether the time stamp is within a predetermined time from the current time. 11. The location information service method described in 11 or 12. 16. The receiving terminal transmits seed data for generating an encryption key to the sending terminal, and the sending terminal uses a random number based on the seed data acquired from the receiving terminal. Generating a key for encrypting the position information, encrypting the position information with the key for encryption and transmitting the encrypted position information, and generating a key for decryption from the receiving terminal at the position information management center 11. The position information service method according to claim 10, wherein the seed data for performing the seed data acquisition is obtained, a decryption key is generated by a random number using the seed data as a seed, and the encrypted position information is decrypted. 17. The position information service method according to claim 10, wherein the position information management center authenticates the receiving terminal based on an authentication request from the receiving terminal. 18. The location information management center defines a location information providing period with a user of the receiving terminal in advance, and provides the location information when the encrypted location information is acquired from the receiving terminal. The position information service method according to claim 10, wherein the decoded position information is provided when it is within the period. 19. CallingFixedTerminal(Hereinafter, simply referred to as the calling terminal.
You)And incomingFixedTerminal(Hereinafter, simply referred to as the receiving terminal)
And a switching network for setting up a call between communication means between terminals,
The location information indicating the location of the calling terminal connected to the exchange network is
System consisting of location information management center provided to the receiving terminal
Location information service installed on the originating terminal
A storage medium storing a program, Generate a key for encryption and use the key to encrypt the location information.
Encryption that encrypts and generates encrypted location informationStepWhen, The encryptionStepThe encrypted location information encrypted by
Is transmitted to the receiving terminal through the switching network.
End communicationStepAnd, The program to be executed by the calling terminal
Stored lambLocation information service professional characterized by
A storage medium that stores grams. 20. The method of claim 19, wherein the encryption step, the use comprising the steps of: generating a word <br/> over click key that is a key for a different encryption each time for each encrypted by the random number, the master key for encryption work vinegar to encrypt the key
20. The storage medium storing the position information service program according to claim 19, which causes the calling terminal to execute the step . 21. The encryption step, stearyl that in addition to the key for encryption to generate an encrypted location information by encrypting the location information using the inbound telephone number to call
Claim to execute-up to the calling terminal 19 or, 2
A storage medium storing the location information service program described in 0. 22. The encryption step includes a step of generating a work key, which is a key for encryption, which is different for each encryption by a random number, and the position information is obtained by using the work key. Encryption step
20. A storage medium storing a location information service program according to claim 19, which causes the originating terminal to execute a request. 23. The encryption step includes the steps of generating a work key for encrypting the random number seed specific data, encrypting the location information using the work key for the encrypted And causing the originating terminal to execute
A storage medium storing the location information service program described in item 9. 24. The encryption step, in addition to the position information, to generate encrypted encrypted location information verification data for verifying in decoding step
Claim to execute up to the calling terminal 19 or, 2
A storage medium storing the location information service program described in 0. 25. The encryption step generates encrypted position information in which, in addition to the position information, an incoming telephone number to be called and a time stamp are encrypted .
The storage medium storing the position information service program according to claim 19 or 20, which causes the calling terminal to execute a step . 26. The method of claim 25, wherein the encryption step, the random number seed to the seed data obtained from the receiving terminal generates a key for encrypting the location information step
Claim to execute up to the calling terminal 19 or, 2
A storage medium storing the location information service program described in 0. 27. CallingFixedTerminal(Hereinafter, simply referred to as the calling terminal.
You)And incomingFixedTerminal(Hereinafter, simply referred to as the receiving terminal)
And communication between terminalsmeansThe switching network that sets up the call between
The location information indicating the location of the calling terminal connected to the exchange network is
System consisting of location information management center provided to the receiving terminal
Location information service installed on the receiving terminal
A storage medium storing a program, Communication with the originating terminal and the location information management center
Incoming terminal communicationStepWhen, Received from the originating terminalDarkThe encoded position information is converted to the position information
Transfer to the information management center and decrypt from the location information management center
Location information acquisition to obtain the converted location informationStepWhen, Acquisition of the location informationStepDisplay the location information obtained in
DisplayStepAnd, The calling terminal
Characterized by storing the programLocation information service
A storage medium that stores a program. 28. The positional information acquisition step, the encrypted position information assigned incoming telephone number, a step of transferring the location information management center to the called terminal
A storage medium storing the position information service program according to claim 27, which is executed . 29. The step of transmitting seed data for generating an encryption key to the transmitting terminal, further comprising the receiving terminal.
A storage medium storing the position information service program according to claim 27, which is executed by the storage medium. 30. CallingFixedTerminal(Hereinafter, simply referred to as the calling terminal.
You)And incomingFixedTerminal(Hereinafter, simply referred to as the receiving terminal)
And communication between terminalsmeansThe switching network that sets up the call between
The location information indicating the location of the calling terminal connected to the exchange network is
System consisting of location information management center provided to the receiving terminal
Installed in the device of the location information management center
It is a storage medium that stores the location information service program.
hand, Center communication for communication with the receiving terminalStep
When, From the receiving terminal,Consists of location information and verification data
Encrypted location informationFor decryptingGet the request and said
Calling terminalsoThe encrypted location information is
The center communication is performed by decoding and generating position information.Step
TheDecoding provided to the receiving terminal via theStepWhen, The location informationThe aboveCharge the service charge provided to the receiving terminal
Billing to make moneyStepAndThe equipment of the location information management center
Stored the program to be executed byCharacterized by
A storage medium storing a location information service program. 31. The decoding step, using the master key for decoding corresponding to encryption master key that is used for encryption by the calling terminal, dark <br/> Goka by the calling terminal decoding a word over click key which is, by using the work key is decrypted, and decrypting the encrypted location information, instrumentation of the position information management center
A storage medium storing the location information service program according to claim 30, which is executed by a storage device. 32. The decoding step includes the steps of generating a work key for decoding the synchronized data with the specific data used to generate the work key for encryption by the calling terminal as a seed, the and decrypting the encrypted location information by using the work key for decoding, instrumentation of the position information management center
A storage medium storing the position information service program according to claim 30 or 31, which is executed by a storage device. 33. The decoding step, the encrypted position information, called telephone number and the position information tube the step of decoding using the key used when encrypting
A storage medium which stores the position information service program according to claim 30 , which is executed by a device of a physical center . 34. The position information and the verification data decoded in the decoding step are extracted, the verification data and the extracted verification data are compared, and if they match, it means that the decoding is valid. further, the location information management Sen verification step of
A storage medium storing the position information service program according to claim 30, 31, 32, or 33 to be executed by a data device . 35. The decryption step comprises: position information decrypted from the encrypted position information;
When the location information is encrypted at the sending terminal, it is obtained from the timekeeping means.
The time stamp verification step of extracting the obtained time stamp and verifying whether the time stamp is within a predetermined time from the current time is further performed by the device of the position information management center.
A storage medium storing the position information service program according to claim 30 or 31 to be executed by the storage medium. 36. The seed data for generating a key for decryption is obtained from the receiving terminal, a decryption key is generated by a random number using the seed data as a seed, and the encrypted position information. The step of decrypting the
A storage medium storing the position information service program according to claim 30 or 31 to be executed by an apparatus . 37. The method further comprising the step of authenticating the receiving terminal.
31. The device of the location information management center is caused to execute the operation.
A storage medium storing the described location information service program. If the 38. acquired the encrypted position information from the receiver terminal, in the case in advance the position information providing period was Me determined between the user of the called terminal, the position information decoded The step of providing the location information management session
31. A storage medium storing the position information service program according to claim 30, which is executed by a computer device .