WO2007034640A1

WO2007034640A1 - Provided information management system and provided information management program

Info

Publication number: WO2007034640A1
Application number: PCT/JP2006/316146
Authority: WO
Inventors: Isamu Kaneko
Original assignee: Oknack Inc.
Priority date: 2005-09-22
Filing date: 2006-08-17
Publication date: 2007-03-29
Also published as: JP2007087185A; JP4403124B2

Abstract

Sharing and diffusion of falsely provided information is effectively prevented. An information recipient device (S3) for receiving provided information in a system where provided information such as music contents is circulated over an information sharing network using communication models such as a peertopeer is characterized by comprising check information judging means (3E) for judging whether or not the check information received from a provided information management device (S1) for managing the provided information is normal check information and check means (3F) for checking identification information included in the check information with the identification information received by identification information receiving means according to the check information judged as being normal and outputting a control signal for controlling the provided information received by the provided information receiving means according to the contents of the check information.

Description

Specification

Provided information management system, provided information management program

Technical field

TECHNICAL FIELD [0001] The present invention relates to a management system that is suitably used to eliminate unauthorized provision information when disseminating provision information such as music content.

Background art

[0002] With the development of communication systems and devices typified by the Internet, information exchange using the data and real-time properties of the Internet has recently become popular. (For example, see Patent Document 1)

As such a system, for example, there is a system in which music content or the like is automatically diffused to each device in an information sharing network formed by installing specific file exchange software on each device.

Patent Document 1: Japanese Patent Laid-Open No. 5-236057

Disclosure of the invention

Problems to be solved by the invention

However, since the transmission / reception of each content in the system is directly transmitted / received between the device having the content as the provided information and the information receiver side device without going through the server, the copyright etc. It was very difficult to prevent unauthorized music content, etc., that we did not have on the network.

Means for solving the problem

[0005] Therefore, the present invention provides an information provider side device that first provides provided information such as music content on an information sharing network using a communication model such as PeertoPeer, and connection destination information of the device having the provided information. A connection destination search means for searching for, and using the information sharing network, establishes a connection with a device having provided information based on the connection destination information, receives the provided information directly, and receives the received provision A provided information management system comprising: an information receiver side device that can provide information in the information sharing network; and a provided information management device that manages the provided information, the information provider side device Identification information adding means for adding identification information such as provider identification information for identifying the information provider and provision information for identifying the provision information to the provision information provided by the device, and provision provided by the device Providing information transmitting means for transmitting information in association with the identification information, and the providing information management device creates matching information for managing the providing information based on the identification information Identification information reception means for receiving the identification information associated with the provided information, wherein the information receiver side device comprises a verification information output means for outputting the verification information created by the verification information creation means Means, receiving information receiving means for receiving providing information associated with the identification information, matching information receiving means for receiving matching information including information relating to the identification information, and The verification information received by the verification information reception unit is a verification information determination unit that determines whether the verification information is regular verification information, and the verification information that is determined by the verification information determination unit as regular verification information. Based on the identification information included in the verification information and the identification information received by the identification information receiving means, the provision information received by the provision information receiving means according to the content of the verification information Collating means for outputting a control signal for controlling information, provided information accumulating means for accumulating provided information permitted to be accumulated by the collating means and identification information associated with the provided information, and provided information accumulating means Provision information transmitting means for transmitting the provision information stored in the information when receiving the provision information request signal transmitted from the other information supplier-side device. .

[0006] This increases the number of devices that can provide provision information in the system while maintaining the effect of preventing the spread of illegal provision information, and dramatically increases the propagation efficiency for legitimate provision information. Can be improved.

[0007] Further, since the external power of the information sharing network is not a form for managing the provided information, it is possible to avoid being a target of hacking using the management form.

[0008] As a specific configuration, the information provider side device provides provider identification information adding means for adding provider identification information for identifying the information provider to the provided information provided by the information provider side device, Provision information transmitting means for transmitting the provision information in association with the provider identification information for identifying the information provider, and the provision information management device permits provision of information. A collation that creates provider identification information management means for managing provider identification information of permitted information providers and collation information including provider identification information permitted to provide information based on the provider identification information management means. Information generating means; and collation information output means for outputting the collation information created by the collation information creating means, and the information receiver side device displays the provider identification information associated with the provision information. Provider identification information receiving means for receiving information, provision information receiving means for receiving provided information associated with the provider identification information for identifying the information provider, and provider identification information of an information provider permitted to provide information Collation information accepting means for accepting collation information including information on the provider, provider identification information accepted by the provider identification information accepting means, and acceptance by the collation information accepting means. The provided information received by the provided information receiving means is verified based on the provided provider identification information to verify whether the provided information is provided by the information provider authorized to provide the information, and the information is allowed to be provided. Information provided by the information provider, the collation means for outputting the accumulation permission signal for permitting the accumulation of the provision information, the provision information permitted to be accumulated by the collation means, and the relevant information Provision information storage means for storing the provider identification information associated with the provision information, provision information request signals transmitted from other information supply / demand side devices received the provision information accumulated in the provision information storage means It is conceivable to have a provision information transmission means to send it when triggered!

[0009] Thereby, it is possible to limit the information providers who can provide information within the information sharing network, and to manage so that regular provision information is propagated.

[0010] Further, the provision information management device has a deletion instruction means for transmitting a deletion instruction of the provision information stored in the information receiver side device based on the identification information. Even if the correct provision information leaks into the system, the illegal provision information can be deleted to maintain an appropriate provision information management system.

[0011] Further, since the provision information management device has provision information storage means for storing provision information transmitted from the information provider side device, there are few devices having provision information in the system! /, Even in this case, the information receiver can reliably obtain the desired information.

[0012] The collation information creating means is provided with collation information including identification information relating to provision information prohibiting distribution in the information sharing network and information to be deleted! The identification information included in the verification information and the identification information received by the identification information receiving means based on the verification information determined by the provided information verification means to be regular verification information. If the ID matches the identification information included in the verification information, a control signal is output indicating that the provided information associated with the identification information is not received, or the identification information It is also conceivable to output a control signal indicating that the provided information associated with the information is deleted.

The invention's effect

[0013] While preventing unauthorized provision information from being shared in a system that transmits / receives provision information in each device, it effectively eliminates providers that provide unauthorized provision information from the system. be able to.

Brief Description of Drawings

FIG. 1 is an overall configuration diagram in an embodiment of the present invention.

FIG. 2 is a functional block diagram according to the embodiment.

FIG. 3 is a screen view of the information receiver side device S3 in the same embodiment.

FIG. 4 is a screen view of the information receiver side device S3 in the same embodiment.

FIG. 5 is an operation flowchart of the provided information management apparatus S1 in the embodiment.

FIG. 6 is an operation flowchart of the information provider side device S2 in the embodiment.

FIG. 7 is an operation flowchart of the information receiver side device S3 in the embodiment.

FIG. 8 is an operation flowchart of the provided information management apparatus S1 in the embodiment.

FIG. 9 is an operation flowchart of the information receiver side device S3 in the fourth embodiment.

BEST MODE FOR CARRYING OUT THE INVENTION

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

[0016] The provided information management system in this embodiment appropriately applies digital contents (provided information) such as music and movies on an information sharing network using a communication model such as so-called PeertoPeer (hereinafter referred to as P2P). As shown in Fig. 1, the information provider side device S2 as the information processing device provided on the provider side of the provision information and the receiver side of the provision information are provided. Information processing equipment An information processing system in which the receiver S3 is connected to be capable of bidirectional communication via a communication line such as the Internet, and is further connected to both devices to be capable of bidirectional communication via the communication line such as the Internet. The provision information management device S1 as a device is provided.

[0017] In the present embodiment, a case will be described in which music content or the like is handled as provided information, and the provided information management system is used in a market where the music content or the like is sold as necessary.

[0018] Here, the "information provider" in this embodiment is, for example, a music content artist, a content distributor who manages the copyright of the music content, etc. Of these, those registered as those who can use this system. In other words, the person who first makes the information he / she can receive from other information receiver side device S3 in the information sharing network of this system, or who sends it to other information receiver side device S3, V The primary information provider who is the source of the information provided.

[0019] Registration is performed using registration support means (not shown). When the unspecified information provider accesses the provided information management device S1, for example, online, the registration support means requests the information provider to input basic data of the information provider. A provider identifier (ID) as provider identification information is issued, and the basic data is stored in association with the provider identifier.

[0020] "Information recipient" refers to a person who receives information provided by an information provider or the like and who has been registered as a person who can use this equipment as well as an information provider. The registration procedure, identification information acquisition process, and the like are the same as described above, and a description thereof will be omitted.

[0021] As will be described later, the information receiver in the present embodiment is a person who can be a secondary information provider that transfers provided information received from another device to another device.

[0022] An "information sharing network" is a connection established on the basis of connection destination information of a device having provided information, and directly using a communication model such as PeertoPeer (P2P) in an equal position. A network that can send and receive information provided by each.

[0023] In the present embodiment, the network is an application built by devices having specific applications (file exchange software) on an IP network, and files released by individual devices are automatically spread. A network that goes on. Information concerned Each device that forms a shared network has predetermined file sharing software, etc., and users can connect computers to each other to maintain the system and form a network where files (provided information) can be exchanged. ing. In this embodiment, when a device is placed in a state where a file can be provided without using a server (a certain area of the information storage means), the file is automatically transferred to another device. A network that spreads. More specifically, first, in the network, search target information including a search key and connection destination information of provided information is distributed to each device in the network as information about provided information.

. The information receiver side device S3 that hesitates the provided information searches the search target information stored in each device using the search key, and receives the corresponding search target information. Then, the connection destination information having the provided information is read from the search target information, and the provided information is received by establishing a direct connection with the device.

[0024] "P2P" refers to a form of communication model in which each exchanges information on an equal footing. Specifically, each device (information provider side device S2, information receiver side device S3, etc.) ) Is a technology for building distributed applications that play a symmetric role. In other words, in the case of the P2P method, it means a method in which each other plays an equal role and each peer can be an information provider side or an information receiver side as needed. In connection with the connection, the peer can operate as either a connection accepting side or an active connection side.

[0025] "File sharing software" refers to software for sharing files possessed by each device via, for example, the Internet. The file sharing software in the present embodiment also has a file search function. ing.

[0026] 1. Equipment configuration

Next, the equipment configuration used in constructing the provided information management system will be described. The information provider side device S2 and the information receiver side device S3 are concepts including so-called personal devices, facsimile devices, telephones, etc. In implementation, these devices may be used together. However, in the following description of the present embodiment, the case where the information receiver side device S3 and the information provider side device S2 are personal devices will be described. . These locations are not limited to domestic but may be overseas.

[0027] Further, the information provider side device S2 and the information receiver side device S3 include a keyboard and a mouse. Input device such as display, output device such as display, speaker, etc., storage device such as HD, CPU, internal memory, communication device such as communication interface, etc., and has a web browser.

The provided information management device S1 has a WEB server function, a database function, and the like, and has substantially the same device configuration as the information receiver side device S3 and the information provider side device S2. The provided information management device S1 does not matter whether it is provided in a centralized location or in a distributed manner, and the location is not limited to domestic, and may be overseas.

[0029] In the present embodiment, the provided information management device S1 mainly manages the provider identification information and plays a role for distributing music content and the like provided by the legitimate information provider. It may also serve as a billing server.

[0030] 2. General functions

Providing information management system in this embodiment with by force, as shown in FIG. 2, information to be provided to provide information such as music co Nten' first on information sharing Nettowa click using the communication model, such as p _EertoPeer A user side device S2 and a connection destination search means for searching connection destination information of the device having the provision information, and a device having the provision information based on the connection destination information using the information sharing network (SI , S2, S3) to establish a connection and receive the provision information directly, and also to provide the received provision information in the information sharing network S3 and the information receiver side device S3. A provision information management system having a provision information management device S1 to be managed, which is stored in a storage device of the information receiver side device S3, the information provider side device S2, or the provision information management device S1. did It, by the CPU and peripheral devices in their system is activated, executing various functions described below.

[0031] Hereinafter, each device will be described in detail.

[0032] As described above, the provided information management device S1 is used to manage information providers and individual provided information that can provide music content or the like as a primary provider in the system, for example, illegal copying. It plays a role in managing identification information such as provider identification information in order to prevent content from being mixed in the system.

[0033] Specifically, at least provider information receiving means 1A, identification information management means 1B, Provider identification information transmission means 1C, key generation means 1D, management collation list creation means 1E, shared collation list creation means 1F, shared collation list transmission means 1G, deletion instruction means 1H, information storage means II As a function.

[0034] The provider information accepting means 1A is mainly used in the registration procedure of the information provider, and provides information necessary for registration using a communication device such as the input device or the communication interface. Various information of the person is accepted.

[0035] The identification information management means 1B manages provider identification information of an information provider who is permitted to provide information at least in the system (in the information sharing network). Accepting provider information using the acceptance means 1A and judging whether or not it satisfies the specified registration requirement items, etc. And give a unique provider identifier to the provider who meets the requirements.

[0036] Furthermore, an information provider to which a provider identifier is assigned using an unauthorized provider information receiving means (not shown) is later an unauthorized information provider (providing unauthorized copy content). Etc.), the relevant information provider is searched from the collation list described later based on the provider identifier included in the unauthorized provider information, and provided by the unauthorized provider. An instruction signal for deleting the person identification information from the collation list is output.

[0037] In this embodiment, an information provider who is permitted to provide information is the first information provided by the information provider as the primary provider in the system (information sharing network). A person who is allowed to receive from the other information receiver side device S3 or transmits to the other information receiver side device S3, that is, a person who is permitted to be a source of provided information, Yeah. In the present embodiment, the information receiver can be the secondary information provider because it can transmit the received provided information in response to a request from another device.

[0038] The provider identification information transmitting unit 1C serves to transmit the provider identification information permitted by the identification information management unit 1B to the information provider side device S2 using the communication unit or the like.

[0039] The key generation means 1D provides a new information provision in the system (in the information sharing network). When the information provider is authorized and receives the key generation command signal from the identification information management means IB, the encryption of the information provided in the system corresponding to the provider identification information of the provider is performed. Responsible for generating a pair of private key and public key required for dredging. The private key is a public key encryption method (private key and public key) that is not disclosed to the general public and is held by the administrator and information provider. Encrypted by. On the other hand, the public key is widely disclosed to the administrator and the information recipient, and cannot be combined with the public key corresponding to the data encrypted with the secret key.

It should be noted that the secret key and the public key are set for each information provider identifier. In order to ensure that the shared collation list described later is a legitimate list, encryption information (public key, secret key) unique to the provided information management device is also set.

[0041] The public key information of the provided information management device is transmitted and spread in advance when, for example, each device in the information sharing network logs in to the provided information management device S1.

[0042] The management collation list creation means 1E has a function of creating a management collation list including provider identification information permitted to provide information based on the provider identification information management means 1B. The management verification list is list data that can list information providers who are allowed to provide information to the system, and is necessary for the administrator to manage provider identification information, etc. Is. The management verification list is used only by the administrator.

[0043] Specifically, the information provider information (provider) received from the key generation means 1D and the provider information reception means 1A upon receiving a provider permission signal from the identification information management means 1B. Name, provision qualification, connection destination information such as IP address and port number, public key, secret key, etc. as encryption information are added to the management verification list as data associated with the information provider identifier. Also, when receiving the unauthorized provider deletion instruction signal from the identification information management means 1B, the provider identification information stored in the management verification list is deleted, and the management information that always has the latest provider identification information is deleted. Create a collation list.

[0044] The shared collation list creation means 1F is based on the identification information! And manage the provided information A collation list creation means for creating a collation list for the information provider. Specifically, the collation list creation means is for information provider limited including provider identification information permitted to provide information based on the provider identification information management means 1B. A collation list is created, and a shared collation that includes provider identification information, etc., necessary for the recipient of the provided information to determine whether or not the information provided by the legitimate provider Has a function to create a list. The shared collation list is list data that can list information providers who are permitted to provide information to the system, and is shared by all users who use the system.

[0045] Specifically, similar to the management collation list creation means 1E, when receiving the provider permission signal from the identification information management means 1B, the key generation means 1D and the provider information Information receiving means 1A The above information provider information received (provider name, provision qualification, IP address and port number as connection destination information, public key etc. as encryption key information), provider identification information Is added to the shared collation list. The shared verification list does not include secret key information. In addition, the shared collation list has an administrator identifier that is management identification information and guarantees that the collation list is a legitimate list (guaranteeed that it has been tampered with, guarantee of origin). Are associated with the digital signature that has been digitally authenticated and the private key information of the provided information management device used to realize the digital signature.

[0046] On the other hand, when receiving the unauthorized provider deletion command signal from the identification information management means 1B, the provider identification information stored in the shared collation list is deleted, and the latest provider identification information is always stored. Create a shared collation list.

[0047] The shared collation list transmission unit 1G is a collation list output unit that outputs the shared collation list created by the common collation list creation unit. Specifically, the collation list transmission unit 1G creates the common collation list creation unit 1F. In the shared collation list, the administrator identifier used as management identification information and digital authentication for guaranteeing that the collation list is a legitimate list (assurance of being altered, guarantee of origin, guarantee of origin) It has a function of transmitting the shared collation list to the information receiver side device S3 in a state where a digital signature is added and encrypted with the secret key of the provided information management device. In other words, by receiving the shared collation list request signal that is the identification information request signal transmitted from the information receiver side device S3, the latest shared reference light at that time is received. The shared list is read by reading the combined list from the information storage means II described later, adding the administrator identifier, which is management identification information, and a digitally authenticated digital signature, and encrypting it with the private key of the provided information management device. In a state where the guarantee is attached, the shared verification list is transmitted to the information receiver side device S3 which is the transmission source of the request signal.

[0048] The deletion instruction means 1H has a function of deleting provided information such as music content provided by an unauthorized information provider from the system (in the information sharing network).

More specifically, the provision information identifier of the unauthorized information provider to be deleted is specified based on the provider identification information received using the unauthorized information receiving means. Then, a deletion program that instructs the information receiver side device S3 to delete the provision information associated with the provider identifier of the unauthorized information provider from the provision information already stored in the information receiver side device S3 is provided to the information receiver side device S3. The information is forcibly transmitted and the information provided by an unauthorized information provider is deleted.

[0050] For example, when the verification program receives a verification list request signal from the information receiver side device S3, the deletion program transmits a new shared verification list from which the unauthorized provider identification information has been deleted, and also the information receiver side Forcibly sending the deletion program to device S3. In that case, compare the old shared collation list stored in the information receiver side device S3 with the new shared collation list, detect the illegal provider identification information on the old shared collation list, and detect the fraud A deletion program that deletes the provision information having the provider identification information may be transmitted. In addition, when disseminating search target information, the deletion program can be disseminated at the same time.

[0051] The information storage means II stores various data such as a management collation list, a shared collation list, provided information, a program, etc. in each area.

More specifically, in the management collation list area, based on each provider identifier, the provider name, provision qualification, connection destination information (IP address, port number), encryption key information (public key, Data for the administrator collation list including provider information such as private keys is stored. In addition, a provision information identifier provided by the provider may be stored in association with the provider identifier. The management collation list data guarantees that the management identifier is an administrator identifier and that the collation list is a legitimate list. In addition to the digitally authenticated digital signature information for guarantee and origin assurance), it is stored in association with the encryption information (public key, private key) of the provided information management device.

[0053] Also, in the shared collation list area, based on each provider identifier, provider information such as the provider name, provision qualification, connection destination information (IP address, port number), public key, etc. In addition, the shared collation list data including the administrator identifier is stored. In addition, the shared collation list data guarantees that the management identifier is an administrator identifier and that the collation list is a legitimate list (guarantee that it has been tampered with, the guarantee of origin). For this purpose, it stores the digitally authenticated digital signature information and the private key information used to realize the digital signature in association with each other.

[0054] Further, the provision information transmitted from the information provider side device S2 is accumulated in the provision information area. In the present embodiment, based on each provision information identifier (hash value), Stored information including the file name, key information, file size, update time, and connection destination information (IP address, port number) of the information to be searched, as well as the contents of the music file itself (main unit) Or store the provider identifier!

[0055] Here, the hash value that serves as the provided information (file) identifier summarizes the entire contents of one provided information, so even if the file names are different, the hash value is the same. Can be handled as provided information of the same content.

[0056] The noh and shh values are unique data of a fixed length derived by a string array power mathematical algorithm. In this embodiment, a hash function called SHA-1 is used. The hash value is generated. Specifically, in the hash function, a 160-bit hash value is generated from the original text of 2 64 bits or less. Since the calculation method includes an irreversible one-way function with initial value sensitivity, the hash value takes a pseudo random number. Therefore, the original text cannot be reproduced based on this. When verifying that the original text has not been tampered with during communication, use the hash function at both ends of the communication path to generate hash values and compare them.

[0057] As another method for deriving a hash value, it is conceivable that 128-bit MD5 is used as a hash function, a hash value is obtained from the entire content of provided information, and used as an identifier for identifying a file. In this process, the file name and other information are not used together. The hash value of the aisle is the same as the general-purpose MD5 hash value used for checking the file contents.

[0058] Next, the information provider side device S2 uses the provider identifier assigned from the provided information management device S1, and is operated by a primary information provider that can provide music content and the like in this system. It plays the role of providing its own music content and distributing it within this system.

[0059] Specifically, provider information transmission means 2A, provider identification information reception means 2B, provision information request reception means 2C, identification information addition means 2D, provision information management means 2E, digest information management means 2F, information storage Means 2G and provided information transmission means 2H.

[0060] The information provider side device S2 has various means (not shown) similar to those of the information receiver side device S3 described later (not shown), and at the same time as the information provider side in the information sharing network. It also functions as the receiver S3.

[0061] The provider information transmitting means 2A is used to register with the provided information management device S1 and to have a unique provider identifier assigned thereto. Connection destination information, provision information, search target information, etc.) to the provision information management device S1.

[0062] The provider identification information accepting means 2B accepts a provider identifier which is provider identification information when registration is completed in the provision information management device S1, and is mainly an input unit such as a communication unit or a keyboard. To do.

[0063] The provided information request accepting means 2C receives a provided information request signal transmitted from the information receiver side device S3 of provided information. For example, the provided information request receiving means 2C provides at least a provided search key included in the search target information. The provided information identification information necessary for identifying the information and the connection destination information of the information receiver side device S3 of the provided information are received.

[0064] The identification information adding means 2D is means for creating provision information to be transmitted to the information receiver apparatus using provision information transmission means 2H described later, and at least provider identification information for identifying the information provider and It has a function of adding identification information such as provision information identification information for identifying the provision information to the provision information provided by itself. That is, based on the provision information identification information included in the provision information request signal, it is stored in the information storage means 2G described later. Read the provided information, and add the provided provider information for transmission with the provider identifier and provider information identifier (hash value) as their provider identification information, and the administrator identifier as management identification information added Has the ability to create!

[0065] Provided information management means 2E has a function of individually managing provided information provided by itself. Each provided information identifier (hash value) is attached to the provided information main body (music information). Video information, etc., as well as additional information related to the provided information (e.g. content title, playback time, artist name, album name, genre, content, and sales information when selling the provided information) Management information such as sales price, viewing frequency, viewing information such as availability of viewing).

[0066] The digest information management means 2F is a means for the information receiver to create search target information that serves as a guideline when searching for the provided information desired by the information receiver based on the provided information. It contains information that serves as a search key to be entered when the information recipient searches for provided information. The digest information management means 2F also has a function of creating the provided information identifier (no hash value), and manages each search target information in association with the provided information identifier (hash value). ing. The search target information may include file name, key information, size, update time, connection destination information (IP address, port number), and so on. Further, it has a function of generating digest information used in digital authentication by the provided information matching means 3F described later. Specifically, the hash information such as SHA-1 is used to generate digest information that is a hash value from provided information and its own provider identification information (provider identifier).

[0067] The information storage unit 2G has a provider information area, a provided information area, a program area, and the like, and stores various types of information.

More specifically, in the provider information management area, the provider name, provision qualification, connection destination information (IP address, port number), secret key, etc. are associated with the provider identifier that is the provider identification information. Stores provider information that is self-information.

[0069] In the provided information area, provided information that can be transmitted to other devices is accumulated. In association with the provided information identifier (hash value), the file name, key information, Stores size, update time, connection destination information (IP address, port number) and provides In addition to the provided information including the provided information body (music information, video information, etc., which is the content of the file itself) in association with the information identifier (hash value), additional information related to the provided information (for example, content serving as index information) (Information such as title, playback time, artist name, album name, genre, contents, sales price when selling the provided information, viewing information such as the number of viewings, availability of viewing, etc.) It is stored in association with identification information.

It should be noted that the search target information and the provided information are created using the provided information management means 2E and the digest information management means 2F.

[0071] Provision information transmission means 2H transmits its own search target information and provision information in association with the provider identification information and provision information identification information added using provider identification information addition means 2D. Take a role as a means.

[0072] Specifically, when receiving the provision information request signal, the storage means power is read based on the provision information identifier included in the provision information request signal and the requested provision information is read out. Send to side device S3. Also, search target information to be searched is transmitted (spread) to other devices.

[0073] Note that connection management means (not shown) is provided to connect to other devices in the information sharing network. The connection management means manages connection destination information of other devices and connections to the devices. Specifically, in order to connect the search link in the information sharing network, the connection destination information of other devices is collected and stored in the information storage means 2G. The connection management means manages the TCP connection (BSD socket) used for actual communication and communication buffering for asynchronous communication along with this connection destination information.

[0074] Connection destination information of other devices in the information sharing network is acquired at the following two timings. First, when the connection is established, the initial connection destination information and the connection information of other devices that have been stored once by the connected device are received and the connection destination such as the IP address, port number, connection line upload speed, etc. Get information. In addition, after connecting search links using them, the connection environment etc. is obtained directly from the other party.

[0075] Information that is passed to other devices before connection includes IP address (IPv4), port number (TC P), upload speed (in KbyteZ seconds), and is obtained from the other node after connection Information includes connection form (directly via ZNAT, no ZDDNSZ open port).

[0076] The information receiver side device S3 includes at least a shared collation list accepting means 3A, provided information search means 3B, provided information requesting means 3C, provider identification information accepting means 3D, provided information accepting means 3E, provided information collation Means 3F, information storage means 3G, provision information request acceptance means 3H, provision information transmission means 31, provision information output means 3J.

[0077] The shared collation list accepting means 3A is a means for receiving a shared collation list limited to information providers, which is collation information including at least provider identification information of an information provider who is permitted to provide information. In this embodiment, each time an information receiver connects to the system, the information receiver sends a shared collation list request signal to the provided information management device S1, and at that time, the latest shared collation list is sent to the provided information. Received from the management device S1.

[0078] The shared collation list accepting means 3A determines whether the common collation list (accepted collation information) is a legitimate shared collation list transmitted from the provided information management device. It also has a function as a means!

More specifically, for the present embodiment, the public key is used to determine the strength of a regular shared collation list using a digital signature, and when the shared collation list is received, it is received in advance. ! /, Composited using the public key of the provided information management device, attached to the shared verification list, received digital authentication using the digital signature, and the shared verification list is a legitimate shared verification list. Determine whether it is a list (determining that it has not been tampered with, determining the legitimacy of the source, etc.).

[0080] Here, when it is determined that it is a regular shared collation list, the common collation list is accepted and stored in information storage means 3G described later, and used in provided information collation means 3F described later. . On the other hand, if it is not judged that it is a legitimate shared collation list (digital authentication failed, decryption failed, etc.), the common collation list is discarded without being accumulated.

[0081] The provided information search means 3B searches the provided information desired by the information recipient from within this system (information sharing network) using a search key that is a keyword such as the title of the provided information, and provides the provided information. It is a means for knowing the connection destination information of the device having. Specifically, when a keyword such as the title of the provided information is entered in a predetermined format displayed on the screen of the information receiver side device S3, the information sharing network The search request information (search key information) is automatically sent to the devices that are connected via the network. Then, the search result information including the connection destination information of the provision information is received from the device having the provision information to be searched or the device that stores the connection destination information of the provision information! In this embodiment, the search target information of each device is searched for information corresponding to the search key, and the search target information corresponding to the search key is received as search result information. The search target information includes the connection destination information of the device having the provision information and the information provider identifier of the provision information. The devices searched here may be all of the provided information management device Sl, the information provider side device S2, the other information receiver side device S3, or any of the devices present in the system. ,.

[0082] Specifically, a search request is propagated to a remote device until a certain condition (having search target information including a search key) is satisfied, and a search key that matches the search condition is packed in a response message. And come back. When the information receiver specifies a search keyword and performs a search, the information receiver side device S3 creates search request information using file exchange software. Since the search request information includes a search condition, the search start device packs the search key in the request message and sends the search request information to the adjacent device. If the device that received the request finds a search key that hits this condition, it knocks the search key to the request and passes the request to the next device. When the number of search keys in the request is limited, the search target information including the search key of the search result is returned to the search source by going back the route.

Furthermore, the provided information search means 3B of the present embodiment uses a search link network to search the search target information including the search key information and to spread the search target information. In both cases of spread and search, the sender of the search key packs the search key in the search information and sends it out, and the receiver sends out the search key by unpacking it. For this reason, this system treats the diffusion of search keys as a kind of search. Specifically, once a spreading request is sent once every 30 seconds and a spreading request is issued to a neighboring device that has a search link, the neighboring device will search for a search message that includes a search key in the spreading request as a response message. Packs information and returns it. In this way, the search target information including the search key is distributed to the network connected by the search link.

Note that the determination of which device is adjacent is based on, for example, the line speed. The

[0085] Provided information request means 3C is used when requesting provided information to a device having provided information searched using provided information search means 3B. In the present embodiment, From the search result received using the provided information search means 3B, the connection destination information of the device having the provided information is read, and a PtoP connection is established with the device. After that, a provision information request signal is transmitted to a device having provision information. The information receiver side device S3 also has connection management means (not shown) that the information provider side device S2 has, and establishes a connection with the device having the provision information using the connection management device. To do.

[0086] The provider identification information accepting means 3D has a function of receiving and accepting at least information related to the provider identification information associated with the provision information provided by the information provider. In the form, provider identification information associated with search target information sent together with the search result is also included.

[0087] Provided information receiving means 3E is means for receiving provided information requested using provided information requesting means 3C. In the present embodiment, as described above, with the PtoP connection established with the information provider side device S2, in addition to the provision information requested by itself, the search target information and the like are also included in the provider identification information. Receive in the associated state.

[0088] The provided information collating means 3F is based on the collation information determined to be regular collation information! /, The identification information included in the collation information, and the identification information received by the identification information receiving means. And a control means for outputting a control signal for controlling the provided information received by the provided information receiving means in accordance with the contents of the matching information.

Specifically, based on the provider identification information received by the provider identification information receiving unit 3D and the provider identification information received by the collation information receiving unit, the provider information receiving unit accepts it. If the provided information is the information provided by the information provider authorized to provide information, and the information provided by the information provider authorized to provide the information is This is a verification means for outputting a storage permission signal indicating permission, and has the function of verifying the received information provided by an appropriate information provider. [0090] In the present embodiment, when receiving provision information and an information provider identifier associated with the provision information from an apparatus having provision information, the provision information and provision are provided using the hash function. The digest information is created from the person identifier. Next, a public key associated with the provider identifier is searched from the shared matching list, and the public information and the digest information are used to search for the provided information in an authentication server such as a provided information management device. Upon receiving digital authentication, if the digital authentication is successful, a storage permission signal indicating that storage of the provided information is permitted is output.

[0091] The information storage means 3G stores a shared collation list, provided information, a program, and the like divided into various areas.

More specifically, in the shared collation list area, based on each provider identifier, provider information such as the provider name, provision qualification, connection destination information (IP address, port number), public key, etc. In addition, the shared collation list data including the manager identifier and the like is stored.

[0093] In the shared collation list area, only the common collation list for which the collation information determination unit determines whether the collation information is regular is stored.

[0094] In addition, provided information received from other devices is accumulated in the provided information area, and in the present embodiment, the search target information is based on each provided information identifier (hash value). Stores file name, key information, file size, update time, connection destination information (IP address, port number) of provided information, and stores the provided information (file contents themselves). In addition, the search target information and the provided information are associated with the provider identifier of the providing information provider that is the transmission source!

The provided information request accepting means 3H is a means for receiving provided information request information transmitted from another information receiver side device S3. Specifically, the provided information request accepting means 3H is provided from another information receiver side device S3. By receiving the provided provision information request signal, the retrieval target is searched from the retrieval target information and provision information stored in the provision information area based on the provision information identifier or the like.

The provision information transmitting means 31 transmits provision information stored in the provision information area when receiving a provision information request signal transmitted from another information receiver side device S3. is there. More specifically, the provided information request receiving means 3H provides its own provided information area. As a result of searching the information in the area, if the information requested by another device matches the provided information stored in its own provided information area, the matching search target information and provided information are requested in a state associated with the provider identifier. Then send it to the device. Note that information is directly transmitted to and received from the receiving apparatus using the connection management means. Further, the distribution of search target information and the like are executed using the provided information transmitting means 31.

Provided information output means 3J is an output means for outputting provided information based on the collation result of provided information collating means 3F, and triggered by receiving an output enable signal by provided information collating means 3F. Then, using a dedicated playback program or a general-purpose playback program, an image is displayed on the display screen of the information receiver side device S3 as shown in FIG. 3 or FIG. 4, and music is played back.

Next, the operation of each device will be described with reference to the flowcharts of FIGS.

(1) Register provided information person identifier, etc. (Create collation list)

First, as shown in FIG. 5, the provided information management device S1 uses the provider information receiving means 1A, the registration means (not shown), etc., and registration request information from the information provider side device S2 that is newly desired to be registered. Is received (step S1: Y), a format for receiving various provider information necessary for registration is transmitted to the information provider side device S2, and the provider information is received according to the format (step S2). Then, the identification information management means 1B determines whether or not the received provider information satisfies a predetermined registration requirement item, thereby giving a provider identifier that is provider identification information. A permission decision is made to determine whether or not the request is satisfied, a unique provider identifier is given to a provider who satisfies certain requirements, and a key generation command signal is output to the key generation means 1D. Then, in response to the key generation command signal, the key generation means 1D generates a public / private key pair for the provider identifier (step S3). Then, the management collation list creation means 1E receives various management information (provider name, provision qualification) in association with the provider identifier when receiving the management collation list creation signal from the identification information management means 1B. Then, add the IP address and port number as the connection destination information (public key, secret key, etc. as encryption key information) to the administrator list to create the latest management verification list (step S4).

[0099] The provider identifier added to the management verification list is registered together with the secret key. Is sent to the information provider side device S2 that has been sent (step S5).

[0100] Next, based on the management collation list or the like, the shared collation list creating means 1F adds a new information provider to the common collation list, and the recipient of the provider-provided information is authorized. The latest shared collation list including the provider identification information necessary for determining whether the information provided by the provider is correct or not is created (step S6).

[0101] Then, after adding authentication information to the shared collation list (step S7), the shared collation list file is shared with the information sharing network (step S8).

[0102] Here, "to share on the information sharing network" means that the information sharing network is used to disclose various information (files) that the device itself has and other devices can receive the information. That means.

[0103] In this embodiment, all the devices constituting the information sharing network share the same file exchange software, and share files on the information sharing network using a communication method such as P2P. Realize.

(2) Providing newly provided information within the information sharing network

As shown in FIG. 6, when the information provider side device S2 determines that there is new provision information by accumulating new provision information in the provision information area (step S101), the digest management means uses the digest management means. The search target information that serves as a guideline for searching for the provided information desired by the user is created from the provided information, and the provided information is created using the provided information management means 2E (step S102).

[0104] Specifically, the digest information management means 2F first creates the provision information identifier (hash value), and then adds the name information of the file to the provision information identifier (hash value), One search target information is created for one provided information by associating the index information such as the IP address indicating the size, update time, and connection destination information of the provided information body with the port number.

[0105] In addition to the provided information body (music information, video information, etc.), the provided information management means 2E also provides additional information related to the provided information (for example, content title, index time, artist name as index information) , Album name, genre, content, sales price when selling the provided information, viewing information such as viewing frequency, viewing availability, etc. ) Is associated with the provision information identifier (hash value) to create one provision information.

[0106] Furthermore, the provided information collating means 3F, which will be described later, generates digest information used for digital authentication. Specifically, the hash information such as SHA-1 is used to generate digest information that is a hash value from the provided information and its own provider identification information (provider identifier).

Next, when digital authentication is performed on the digest using the secret key and the digest information (step S103), the search target information and the like are stored in the provided information area, and other devices It is disclosed and shared in a state where it can be transmitted in accordance with a powerful connection (step S104).

(3) Request information provided

First, as shown in FIG. 7, the information receiver side device S3 requesting the provision information connects to the provision information management device S1 and logs in (step S201: Y), and receives the latest shared collation list (step S201). S 202) Then, using the collation information determining means of the common collation list receiving means 3A, it is determined whether or not the common collation list is a regular list. Specifically, the shared collation list is composited using the public key of the provided information management apparatus that has been received in advance, and is added to the common collation list and is not shown using a digital signature. Digital authentication is performed on the shared collation list via the authentication server, and it is determined whether the shared collation list is a legitimate shared collation list (determination of tampering, legitimacy of origin) Etc.). Then, the authorized shared collation list for which authentication has been approved is stored in the information storage means 3G (step S203: Y). If the authentication is not approved (not in the regular shared collation list), the shared collation list is discarded (step S205), and a new shared collation list is received again.

[0108] Next, based on the search target information spread to each device, the provided information desired to be downloaded is searched (step S204).

[0109] Specifically, first, connection is made to an information sharing network, and search is performed using the P2P file sharing software. The name (or part of the file) you are looking for is entered in the [Search word] text box displayed on the display means of the information receiver device S3, and the search key is pressed when the [Search] button is pressed. Accept. Each device in the information sharing network Since it is connected in a network, it sends file search request data to other neighboring devices. If that device does not have a search key, the search destination device is repeatedly requested (sent) for the search request data to the next device. Then, the search request data is transmitted to all devices connected to the information sharing network, and individual devices can be searched. In this way, the search request is propagated through several devices, and the search target information having the search key together with the search match data is received as the search result information from the device having the search target information matching the search key. The search ends when

[0110] The information receiver side device S3 displays a list of files that meet the conditions specified based on the received search match data and the like on the display means.

[0111] After that, the information receiver side device S3 downloads the provided information found by the search, and uses the P2P method with the device having the provided information based on the connection destination information included in the search target information. A direct connection is made and a provision information request signal is transmitted (step S206).

[0112] Then, when the provided information and the information provider identifier associated with the provided information are received (step S207), the provided information and the provider identifier power also create digest information using the matching means. To do. (Step S208). Next, a public key associated with the provider identifier is searched from the shared collation list, and using the public key, authentication information (not shown) of the provided information management device S1 is used to provide the provided information. When the digital authentication is received and the digital authentication is successful (step S209: Y), the output means of the information receiver side device S3, such as playing music using the output means or displaying the video, is used. Output advertisement information. Further, the provision information is accumulated in the provision information area (step S211), and the provision information is shared on the information sharing network (step S213). On the other hand, if the authentication fails, the received data such as provided information is deleted (step S212).

(4) Send provided information

On the other hand, when the device having the provision information requested by the information receiver side device S3 is directly connected to the information receiver side device S3 by P2P and receives the provision information request signal, it is included in the provision information request signal. Provision information requested from the storage means based on the provision information identifier The information is read and transmitted to the information receiver side device S3.

(5) Delete provided information person identifier, etc.

As shown in FIG. 8, the provided information management device S1 uses the unauthorized provider information receiving means 1A (not shown), for example, unauthorized information regarding an unauthorized information provider that provides illegal copy content, etc. When the provider information is received and accepted (step S301), the corresponding information provider is searched from the management collation list based on the provider identifier included in the unauthorized provider information (step S302). Then, the provider identification information of the unauthorized provider is deleted from the management verification list (step S303), and the provider identification information of the unauthorized provider is deleted from the shared verification list (step S304). After that, authentication is added to the new shared collation list from which the provider identification information of the illegal provider has been deleted (step S305), and the shared collation list is shared on the information sharing network (step S306).

[0113] On the other hand, the provided information management device S1 uses the unauthorized provider information receiving means 1A (not shown), for example, to provide unauthorized information related to an unauthorized information provider that provides illegal copy content, etc. When the user information is received and accepted, the provision information such as music content provided by an unauthorized information provider is deleted from the system (in the information sharing network) using the deletion instruction means 1H or the like.

[0115] With the above configuration, while preventing unauthorized distribution of information from being distributed, the number of devices capable of providing the information provided in the system is increased, and the propagation efficiency of legitimate information provided is dramatically improved. Can do.

[0116] Also, the provider identification information received by the provider identification information receiving unit 3D and the provider received by the shared collation list receiving unit 3A by the information receiver side device S3. Based on the identification information, the provided information received by the provided information accepting means 3E is collated to confirm whether the provided information is provided by the information provider authorized to provide the information, and the information permitted to provide the information In the case of the provision information provided by the provider, the provision information collating means 3F that outputs an accumulation permission signal for permitting accumulation of the provision information, and the provision information permitted to be accumulated by the provision information collating means 3F And the information storage means 3G for storing the provider identification information associated with the provided information, and the provided information stored in the information storage means 3G, the provided information request signal transmitted from the other information receiver side device S3. The provision of the provision information transmission means 31 for transmission upon reception allows the information receiver side device S3 to allow only the provision information provided by the information provider authorized to provide the information. , Incorrect proposal Sharing and diffusion of information can be effectively prevented.

[0117] Also, the provider identification information management means 1B for managing the provider identification information of the information provider permitted to provide information, and the provision of which information provision is permitted based on the provider identification information management means 1B Provided information management device S1 comprising: a shared collation list creation means 1F for creating a collation list including user identification information; and a shared collation list transmission means 1G for outputting the collation list created in the shared collation list creation means 1F Therefore, it is possible to appropriately manage the collation list and prevent distribution of illegal provision information more effectively.

[0118] Furthermore, the provision information management device S1 has a deletion instruction means 1H that transmits a deletion instruction of the provision information stored in the information receiver side device S3 based on the provider identification information. In the unlikely event that illegal provision information leaks into the system, the provision information management system can be maintained by deleting the provision information.

[0119] In addition, since the provision information management device S1 includes provision information storage means II for storing provision information transmitted from the provider side device, there are few devices having provision information in the system. ! In any case, information recipients can get the information they want.

[0120] In addition, the information provider side device S2 transmits management identification information for identifying the provided information management device S1 in association with the provided information or the provider identification information, so that the information provider side device S2 transmits the management identification information in the system. It is also possible to manage the flowing information in a batch.

[0121] Further, provided information receiver side device S3 has connection destination search means for searching connection destination information of a device having provided information, and an information sharing network using a communication model such as PeertoPeer By establishing a connection with a device having provision information based on the connection destination information using a work and directly transmitting / receiving the provision information, it is possible to improve provision efficiency of the provision information.

In the first embodiment, information is provided in the information sharing network by running a collation list for information providers only, including the identification information of the providers permitted to provide information, in the information sharing network. The information providers who can be managed were limited and the provided information was managed.

[0122] In the second embodiment, contrary to the first embodiment, the information must be distributed in the information sharing network !, Kena! /, (Prohibit distribution) Provided information identification information and the provided information are transmitted When the identification information such as the provider identification information of the information provider is managed as a collation list for automatic deletion and matches the identification information included in the collation list, the information receiver side device S3 Describes a configuration in which the provision information associated with the identification information is ignored without being received, or the provision information stored in the information storage means 3G is deleted.

[0123] Hereinafter, the points of difference between the schematic functions of the devices and the first embodiment will be described in detail.

[0124] The provided information management device S1 manages a collation list for automatic deletion, which is collation information for excluding illegal provision information from the information sharing network.

[0125] When the management collation list creation means 1E of the provided information management device S1 receives information on an illegal information provider or illegal provision information from an unauthorized information reception means (not shown), the unauthorized information provider And a function to create a management collation list that includes identification information related to illegally provided information. The management collation list, which is a deletion collation list, is list data that can list information providers and information to be prohibited or deleted from distribution to this system. It is necessary for management. Further, only the administrator uses the management verification list.

[0126] Specifically, when receiving information (identification information), etc., regarding the illegal provider and illegal provision information, the identification information and the identification information included in the management collation list stored in the information storage means 1H And compare. If there is no identification information that is subject to deletion or prohibition in the existing management collation list, the information provider to be deleted or information (identification information) related to the information to be deleted is added, so that it is always up-to-date. Create a collation list for management. The management verification list may include only the identification information or the information provider information ( Provider name, provision qualification, IP address and port number as connection information, public key and secret key as encryption information, etc.) may be held as data associated with information provider identifier.

In the present embodiment, the management collation list is created mainly based on the hash value that is the provided information (file) identifier.

[0128] Here, the hash value that becomes the provision information (file) identifier summarizes the entire contents of one provision information, so even if the file names are different, the hash value is the same. Can be handled as provided information of the same content.

[0129] Power! The management collation list creation means 1E outputs a deletion command signal for deleting the provision information stored in the provision information area accumulated in the information accumulation means 1H based on the identification information. Specifically, the identification information included in the management collation list is collated with the identification information of the provision information stored in the provision information area stored in the information storage means 1H. Outputs a command signal for deleting the provision information associated with the identification information.

[0130] Shared collation list creation means 1F is collation list creation means for creating a collation list for managing the provided information based on the identification information. Specifically, the illegal collation information reception means Based on the information sharing network, and creates a collation list for automatic deletion that includes identification information about the information provider and provision information to be deleted. However, it has a function to create a shared collation list for automatic deletion including identification information necessary for determining whether or not the information is provided by an unauthorized provider. Note that the shared collation list for automatic deletion is list data that can list information providers that are prohibited from providing information to this system and information that is prohibited from being distributed. Share with all users.

[0131] Specifically, similar to the management collation list creation means 1E, when receiving information (identification information, etc.) related to unauthorized providers and unauthorized information, the identification information and the information storage means 1H are stored. The identification information included in the shared collation list that has been stored is compared. If there is no identification information that is subject to deletion or prohibition in the existing shared collation list, the information provider to be deleted or information (identification information) related to the provision information is added, and the latest information is always updated. share Create a collation list. The shared collation list may contain only identification information, or the information provider information (provider name, provision qualification, IP address as connection destination information, port number, etc.) (A public key that becomes information) may be held as data associated with the information provider identifier.

In the present embodiment, a shared collation list for automatic deletion is created mainly based on the hash value that is the provided information (file) identifier.

[0133] Here, the hash value that serves as the provided information (file) identifier summarizes the entire contents of one provided information, so even if the file names are different, the hash value is the same. Can be handled as provided information of the same content.

[0134] In addition, the shared collation list includes an administrator identifier as management identification information and a guarantee that the collation list is a legitimate list (has been tampered with! ) And the information on the private key of the provided information management device used for the digital signature.

The shared collation list transmission unit 1G is a collation list output unit that outputs the shared collation list created by the common collation list creation unit.

[0136] In the present embodiment, information on the entire shared matching list is output to the information receiver side device S3 that has logged in for the first time. However, after the second time, information is added from the existing shared matching list. Only the changed part is output as the change information of the shared collation list.

[0137] Specifically, the identification information (newly prohibited identification information, etc.) that is the changed part of the shared collation list changed by the shared collation list creation means 1F includes an administrator identifier that becomes management identification information, A digitally authenticated digital signature is added to guarantee that the verification list is a legitimate list (guaranteeed that it has been tampered with, and the origin is guaranteed), and is added to the private key of the provided information management device S 1 In the encrypted state, the information receiving side device S3 has a function of transmitting information for changing the shared collation list of the information receiving side device S3. That is, by receiving the shared verification list request signal that is the identification information request signal transmitted from the information receiver side device S3, the latest shared verification list at that time is read from the information storage means II described later, and The shared verification list is added to the information receiver side device S3, which is the transmission source of the request signal, with information that can determine that the shared verification list is legitimate. Send a strike.

The information storage means II stores various data such as a management collation list, a common collation list, provided information, a program, etc. in each area.

More specifically, the management collation list area mainly stores the management collation list created based on the above-mentioned provided information (file) identifiers! And In addition to the provided information identifier, the information provider identifier of the information provider that is subject to deletion or prohibition is stored. Based on each information provider identifier, the provider name, provision qualification In addition, it stores data for the administrator collation list including provider information such as connection destination information (IP address, port number), and encryption key information (public key, private key). In addition, the provided information identifier provided by the provider is also stored in association with the provider identifier.

[0140] The management collation list data includes an administrator identifier as management identification information and a guarantee that the collation list is a legitimate list (guarantee that tampering has not occurred, source guarantee In addition to the digitally authenticated digital signature information, the encrypted information (public key, private key) of the provided information management device is stored and stored.

[0141] Also, in the shared collation list area, the above-described shared collation list for automatic deletion created based on the hash value V, which serves as the provided information (file) identifier, is accumulated! / , Ru In addition to the provided information identifier, it stores information provider identifiers that are subject to deletion or prohibition. Based on each provider identifier, the provider name, provision qualification, connection destination information (IP Stores shared collation list data including administrator identifiers in addition to provider information such as addresses and port numbers) and public keys. In addition, the data of the shared collation list shall be provided with an administrator identifier as management identification information, and a guarantee that the collation list is a legitimate list (guaranteeed that it has been tampered with, guarantee of origin) The digitally authenticated digital signature information and the private key of the provided information management device S 1 are stored in association with each other!

[0142] Further, in the provided information area, provided information transmitted from the information provider side device S2 is accumulated. In the present embodiment, based on each provided information identifier (hash value), Stores the search target information file name, key information, file size, update time, connection destination information (IP address, port number) of the provided information, and the provided information body ( It stores provided information including the music data file itself) and provider identifiers.

[0143] The configuration other than the above is the same as that of the first embodiment.

[0144] The information providing apparatus S2 has the same configuration as that of the first embodiment.

[0145] The information supply / demand side device S3, as a premise, prohibits provided information having identification information (provider identification information or provided information identification information) that matches the identification information included in the automatic verification shared collation list. (Not transmitted / received) Also, in the case of the provided information stored in the information storage means II, it has a function (program) for deleting the provided information.

[0146] The shared collation list accepting means 3A of the information supply / demand side apparatus S3 is a means for accepting a shared collation list (deletion collation list) that is collation information including identification information of provision information to be prohibited or deleted. Each time the system is connected, a shared collation list request signal is transmitted to the provided information management device S1, and the latest shared collation list at that time is received from the provided information management device S1.

In the present embodiment, the entire shared collation list is received for the first time, but thereafter, only information on the changed part of the shared collation list is received.

[0148] The shared collation list accepting means 3A, the collation information (accepted collation information), collation information for determining whether the information is related to the regular shared collation list transmitted from the provided information management device. It also has a function as a determination means.

More specifically, for the present embodiment, the public key is used to determine the strength of a regular shared collation list using a digital signature, and when the shared collation list is received, it is received in advance. ! /, Composited using the public key of the provided information management device, attached to the shared verification list, received digital authentication using the digital signature, and the shared verification list is a legitimate shared verification list. Judge whether it is a list (judgment that it has not been tampered with, judgment of legitimacy of origin, etc.).

[0150] Here, when it is determined that it is a regular shared collation list, the common collation list is accepted and accumulated in information storage means 3G described later.

[0151] In the present embodiment, the information receiver side device S3 performs information storage means 3 described later.

The shared collation list already stored in G and the common collation list acceptance means 3A The change information related to the shared collation list determined to be legitimate is compared. If the change information has, for example, identification information that is newly deleted or prohibited, the identification information is added to the common collation list. Change the data.

[0152] On the other hand, if it is not judged that the regular shared collation list is none (digital authentication failure, decryption failure, etc.), the common collation list is discarded without being accumulated.

The identification information receiving means 3D has a function of receiving and receiving at least identification information such as provider identification information and provision information identification information.

The provided information collating means 3F is based on the collation information determined to be regular collation information! /, Based on the identification information included in the collation information, and the identification information received by the identification information receiving means 3D. And a control means for outputting a control signal for controlling the provided information received by the provided information receiving means 3 E according to the contents of the matching information.

[0155] Specifically, identification information such as provider identification information or provision information identification information received by the provider identification information receiving means 3D is compared with identification information included in the shared verification list, and the shared information If it matches the identification information included in the collation list, a control signal is output indicating that the provided information associated with the identification information is not received.

In the present embodiment, identification and management are mainly performed based on the distribution information (file) identifier based on the hash value.

[0157] Also, identification information such as provider identification information and provision information identification information already associated with the provision information stored in the information storage means 3G is collated with the identification information included in the shared collation list. If it matches the identification information included in the shared collation list, a control signal is output to delete the provision information associated with the identification information from the information storage means 3G.

[0158] The information storage means 3G stores a shared collation list for automatic deletion, provided information, a program, and the like divided into various areas.

More specifically, in the shared collation list area, the shared collation list created based on the information and the hash value is mainly stored as the provided information (file) identifier. In addition to the provided information identifier, information provider identifiers to be deleted or prohibited are stored. Based on each provider identifier, the provider name, provision qualification, connection destination information ( IP Stores shared collation list data including administrator identifiers in addition to provider information such as addresses and port numbers) and public keys. In addition, the shared collation list data also stores the public key information of the provided information management device S1 in order to determine whether the collation list is a regular list.

[0160] In the shared collation list area, only the common collation list for which the collation information determination unit determines whether the collation information is regular is stored.

[0161] In addition, the provided information area stores the provided information received by other devices, and in the present embodiment, the information to be searched is based on each provided information identifier (hash value). Stores file name, key information, file size, update time, connection destination information (IP address, port number) of provided information, and stores the provided information (file contents themselves). In addition, the search target information and the provided information are associated with the provider identifier and the provided information identifier of the providing information person who is the transmission source.

In the first embodiment and the second embodiment, the mode in which the information receiver side device S3 actively acquires the provided information using the information sharing network has been described.

[0162] In the third embodiment, a matching list for automatic download is made to flow in the information sharing network, and the information receiver side device S3 in the information sharing network matches the identification information included in the matching list. Describes a configuration that automatically (passively) downloads provided information.

[0163] The differences between the schematic functions of the respective devices and the first embodiment will be described in detail below.

[0164] The provided information management device S1 generates a collation list for automatic download including identification information of provided information to be automatically (passively) downloaded to the information receiver side device S3 in the information sharing network. to manage.

[0165] The management collation list creation means 1E possessed by the provided information management device S1 uses the provided information diffusion accepting means (not shown) to automatically (passively) download provided information to the information receiver side device S3. When the identification information is received, it has a function of creating a management collation list including the information provider concerning the provision information to be automatically downloaded and the identification information concerning the provision information. To automatically (passively) download the provided information The collation list for management, which is the collation list of the list, is list data that can list provided information that is automatically downloaded to the information receiver side device S3, and is necessary for the administrator to manage the provider information, etc. It will be. The management verification list is used only by the administrator.

[0166] Specifically, when the information provider of the provision information to be automatically downloaded and information (identification information) related to the provision information to be downloaded are received from the provision information diffusion acceptance means, the identification information and the information storage means 1H Compare with the identification information stored in the management verification list. If there is no current identification information in the existing management collation list, the new identification information is added and the latest management collation list is always created. The management verification list may contain only identification information, or the information provider information (provider name, provision qualification, IP address and port number as connection information, etc.) Public key, secret key, etc.) may be held as data associated with the information provider identifier.

[0167] In the present embodiment, the management collation list is created mainly based on the hash value that is the provided information (file) identifier.

[0168] Here, the hash value that serves as the provided information (file) identifier summarizes the entire contents of one provided information, so even if the file names are different, the hash value is the same. Can be handled as provided information of the same content.

[0169] The shared collation list creation means 1F is a collation list creation means for creating a collation list for automatic download for managing the provided information based on the identification information. This is to create a collation list for automatic download that includes information providers of information to be downloaded and information related to the information to be downloaded (identification information). It has a function to create a shared collation list that includes identification information necessary to determine whether or not. Note that the shared collation list for automatic download is list data that can list provided information to be automatically downloaded, and is shared by all users who use this system.

[0170] Specifically, as with the management collation list creation means 1E, the information provider of the provision information to be automatically downloaded from the provision information diffusion acceptance means, information (identification information) about the provision information, etc. When received, the identification information and the information storage means 1H The identification information included in the shared collation list for automatic download is compared. If there is no such identification information in the existing shared collation list, information (identification information) on the provided information that can be automatically downloaded is added, and the latest shared collation list is always created. Note that the shared collation list may have only identification information, or the information provider information (provider name, provision qualification, IP address and port number as connection destination information, etc.) May be held as data associated with the information provider identifier.

[0171] In the present embodiment, the shared collation list is created mainly based on the hash value that is the provided information (file) identifier.

[0172] Here, the hash value that becomes the provision information (file) identifier summarizes the entire contents of one provision information, so even if the file names are different, the hash value is the same. Can be handled as provided information of the same content.

[0173] In addition, the shared collation list includes an administrator identifier serving as management identification information, and a guarantee that the collation list is a legitimate list (warranted! ) Is associated with a digitally authenticated digital signature and private information of the provided information management device.

[0175] In the present embodiment, the information of the entire shared collation list is output for the first time, but only the part that has been changed from the existing shared collation list is changed for the second and subsequent times. Output as information.

[0176] Specifically, management information that becomes management identification information is added to identification information (identification information related to provided information to be newly downloaded automatically) that is a changed part of the shared verification list changed by the shared verification list creation means 1F. And a digital signature that is digitally authenticated to guarantee that it is a legitimate list of the collation list (tampering, guarantee of origin, guarantee of origin). It has a function of transmitting information for changing the shared collation list of the information receiver side device S3 to the information receiver side device S3 in a state encrypted with the secret key. That is, the identification information transmitted from the information receiver side device S3 is required. By receiving a shared collation list request signal that is a solicitation signal, the latest shared collation list at that time is read from the information storage means II described later, and information that can be used to determine that the shared collation list is legitimate. In the added state, the shared verification list is transmitted to the information receiver side device S3 which is the transmission source of the request signal.

[0177] The information storage means II stores various data such as a management collation list, a common collation list, provided information, a program, etc. in each area.

[0178] More specifically, the management collation list area is mainly subject to download automatically! /, Provided information (file) identifier, based on the value of The management collation list created in this way is stored. In addition to the provided information identifier, an information provider identifier of provided information that is automatically downloaded is stored. Based on each provider identifier, the provider name, provision qualification, connection It stores the collation list data for administrators including provider information such as destination information (IP address, port number) and encryption information (public key, private key). In addition, the provided information identifier provided by the provider is stored in association with the provider identifier.

[0179] The management collation list data includes an administrator identifier as management identification information and a guarantee that the collation list is a legitimate list (guarantee that tampering has not occurred, source guarantee In addition to the digitally authenticated digital signature information, the encrypted information (public key, private key) of the provided information management device is stored and stored.

[0180] Also, in the shared collation list area, the shared collation list created based on the provision information (file) identifier that is to be dynamically downloaded is based on the value and the hash value. Has accumulated. In addition to the provided information identifier, the information provider identifier of the provided information to be automatically downloaded is stored. Based on each information provider identifier, the provider name, Stores the shared collation list data including the administrator identifier in addition to the provider information such as provision qualification, connection destination information (IP address, port number), and public key. In addition, the data in the shared collation list is used to guarantee that the collation list is an authorized list (guaranteeed that the collation list has been tampered with, the guarantee of origin). The digitally authenticated digital signature information and the private key of the provided information management device S1 are stored in association with each other. [0181] Furthermore, automatically provided offer information is accumulated in the offer information area. In this embodiment, the file name that is the search target information is based on each offer information identifier (hash value). , Key information, file size, update time, connection destination information (IP address, port number) of the provision information, provision information including the provision information main body (the file content itself) and provider identifier And so on!

[0182] The configuration other than the above is the same as that of the first embodiment.

[0183] The information providing apparatus S2 has the same configuration as that of the first embodiment.

[0184] The information supply and demand side device S3, as a premise, provides provision information having identification information (provider identification information or provision information identification information) that matches the identification information included in the shared collation list (automatic download collation list). It has a function (program, etc.) for automatically retrieving and receiving information using the provision information search means 3B, provision information request means 3C, etc., and accumulating provision information that matches the shared collation list.

[0185] The shared collation list accepting means 3A of the information supply / demand side device S3 is an automatic download for collation information including at least provision information identification information of provision information permitted to be automatically downloaded. A means for accepting a shared collation list, each time a connection is made to the system, a shared collation list request signal is transmitted to the provided information management device S1, and the latest shared collation list is sent from the provided information management device S1 at that time. Receive.

[0187] The shared collation list accepting means 3A determines whether the information is related to the regular collation list (acknowledgment information received) or the regular shared collation list transmitted from the provided information management device. It also has a function as a determination means.

More specifically, for the present embodiment, the public key is used to determine the strength of a regular shared collation list using a digital signature, and when the shared collation list is received, it is received in advance. ! /, Composited using the public key of the provided information management device, attached to the shared verification list, received digital authentication using the digital signature, and the shared verification list is a legitimate shared verification list. Determine whether it is a list (determining that it has not been tampered with, determining the legitimacy of the source, etc.). [0189] Here, if it is determined that it is a regular shared collation list, the common collation list is accepted and stored in the information storage means 3G described later.

[0190] In the present embodiment, the information receiver side device S3 receives the shared collation list already stored in the information storage means 3G described later and the common collation list reception means 3A, Compared to the change information related to the shared collation list that is determined to exist, if the change information has, for example, identification information that is newly subject to automatic download, the identification information is added to the common collation list, etc. Make data changes.

[0191] On the other hand, if it is not judged that the regular shared collation list is none (digital authentication failed, decryption failed, etc.), the common collation list is discarded without being accumulated.

[0192] The identification information receiving means 3D has a function of receiving and receiving at least identification information such as provider identification information and provided information identification information.

[0193] The provided information collating means 3F is based on the collation information determined to be legitimate collation information! /, Based on the identification information included in the collation information, and the identification information received by the identification information receiving means 3D. And a control means for outputting a control signal for controlling the provided information received by the provided information receiving means in accordance with the contents of the matching information.

[0194] Specifically, based on the provider identification information received by the provider identification information receiving means 3D and the provider identification information received by the collation information receiving means, it is received by the provided information receiving means. If the provided information is the information provided by the information provider authorized to provide the information, and if the provided information indicates automatic download, a storage permission signal indicating that storage of the provided information is permitted The received provided information has a function of verifying the appropriate provided information power instructed for automatic download.

In the present embodiment, when receiving provision information and an information provider identifier associated with the provision information from a device having provision information, using the hash function, the provision information and the provider identifier are used. Create digest information. Next, when the public key associated with the provider identifier is searched from the shared matching list, digital authentication of the provided information (digest information) is performed using the public key, and the digital authentication is successful. An accumulation permission signal for permitting accumulation of provided information is output. [0196] The information accumulating means 3G stores the shared collation list, provided information, programs, etc. in various areas.

More specifically, in the shared collation list area, the common collation list created based on the information and the hash value is mainly stored as the provided information (file) identifier. In addition to the provider information identifier, based on each provider identifier, the provider information such as provider name, provision qualification, connection destination information (IP address, port number), public key, etc. Stores shared collation list data including identifiers and the like.

[0198] The data of the shared collation list includes the administrator identifier that is the management identification information, and a guarantee that the collation list is a legitimate list (guaranteeed that it has been tampered with, the guarantee of origin) The digital signature information for digital authentication and the private key of the provided information management device S1 are stored in association with each other.

It should be noted that only the shared collation list determined by the collation information determination means to determine whether the collation information is regular or not is stored in the shared collation list area.

[0200] In the provided information area, provided information received by other devices is stored, and in this embodiment, search target information (key) is based on each provided information identifier (hash value). (Information) file name, file size, update time, connection destination information (IP address, port number) of provided information, and the provided information (file contents themselves) is stored. In addition, the search target information and the provided information are associated with the provider identifier of the providing information provider that is the transmission source!

The provided information management system shown in the first embodiment provides information in the information sharing network by flowing a collation list for limiting the information provider including the identification information of the provider permitted to provide information in the information sharing network. It is configured to manage information provided by limiting the number of information providers who can provide information.

[0201] The provided information management system shown in the second embodiment is not allowed to flow through the information sharing network !, Kena! / ヽ (Distribution prohibited) Provided information identification information and the provided information are transmitted. When the identification information such as the provider identification information of the information provider is managed as a collation list and matches the identification information included in the collation list, the information receiver side device S3 The associated provision information is ignored without being received, or the provision information stored in the information storage means 3G is deleted.

[0202] In the provided information management system shown in the third embodiment, a collation list for automatic download is made to flow in the information sharing network, and is included in the collation list for the information receiver side device S3 in the information sharing network. It is configured to automatically (passively) download provided information that matches the identification information.

[0203] In the fourth embodiment, a system having all the configurations of the first to third embodiments will be described. The configuration of each device is as described above.

[0204] In this system, (1) Shared collation list for information providers only (2) Shared collation list for automatic deletion (3) Shared collation list for automatic download is doing.

[0205] Hereinafter, a process in which the information receiver side device S3 requests provision information using the provision information management system shown in the fourth embodiment will be described with reference to FIG.

[0206] First, the information receiver side device S3 requesting the provided information connects to the provided information management device S1 and logs in (step S401: Y), and the latest shared collation list (shared for information providers only). A collation list, a shared collation list for automatic deletion, and a common collation list for automatic download are received (step S402).

[0207] Then, using the collation information determination means of the common collation list acceptance means 3A, it is determined whether or not the above-mentioned common collation list is a regular list (step S403). Specifically, the shared verification list is duplicated using the public key of the provided information management apparatus that has been received in advance, and is added to the shared verification list and is not illustrated using the digital signature. The digital verification is performed on the shared collation list, and it is determined whether the shared collation list is a legitimate shared collation list (determination that it has not been tampered with, determination of legitimacy of the source, etc.).

[0208] Then, when the authentication is approved (step S403: Y), if it is the first shared collation list received, the regular common collation list is accumulated in the information accumulating means 3G. If there is an already shared collation list, the information storage means 3G reads the already shared collation list (step S404) and relates to the existing collation list and the common collation list that is determined to be legitimate. For example, if the change information has new identification information, the data change such as adding the identification information to the shared collation list is performed.

[0209] It should be noted that the shared collation list that is not authenticated (is not a regular shared collation list) is discarded (step S405), and a new shared collation list is received again.

[0210] After that, based on the shared collation list for automatic download, search and reception of provided information is automatically started (S409).

[0211] Specifically, the information that has the identification information in the shared collation list for automatic download is first used to connect to the information sharing network, and the P2P file sharing software is used. To search.

[0212] In the present embodiment, since each device in the information sharing network is connected in a network, the identification information of the provided information (file) that is automatically downloaded to other adjacent devices. Search request data using as a search key is transmitted. If the device does not have a search key, the search destination device is repeatedly requested (transmitted) for the search request data to the next device. Then, search request data is transmitted to all devices connected to the information sharing network, and individual devices can be searched. In this way, the search request is propagated through a number of devices, and the search target information having the search key together with the search match data is received as the search result information from the device having the search target information that matches the search key. The search ends when

[0213] The information receiver side device S3 displays a list of files that meet the conditions specified based on the received search match data and the like on the display means.

[0214] After that, the information receiver side device S3 downloads the provided information found by the search, based on the connection destination information included in the search target information, and the P2P method with the device having the provided information Connect directly and send a provision information request signal.

[0215] Then, when the provision information is received from the apparatus having the provision information, the power information is collated with the provisional information that the provision information matches with the provision information held in the automatic deletion shared collation list.

Specifically, identification information such as provider identification information and provision information identification information received by the provider identification information receiving means 3D, and identification information included in the shared verification list for automatic deletion are included. The identification information included in the shared verification list for automatic deletion If it matches the information (step S411: Y), the provision information associated with the identification information is not received and a control signal is output (step S415).

[0217] Also, identification information such as provider identification information and provision information identification information already associated with the provision information stored in the information storage means 3G is collated with the identification information included in the shared collation list. If it matches the identification information included in the shared collation list (step S411: Y), a control signal is output to delete the provision information associated with the identification information from the information storage means 3G. (Step S415).

[0218] Next, when it does not match the automatic verification shared collation list, it collates with the shared collation list limited to the provided information person (step S412).

[0219] Specifically, the collation means is used to create digest information from the provided information and the provider identifier. Next, the public key associated with the provider identifier is searched from the shared verification list, and provided using the authentication means (not shown!) Of the provided information management device S1 using the public key. If the digital authentication of the information is received and the digital authentication is successful, the provided information can be obtained using the output means of the information receiver side device S3, such as playing music using the output means or displaying images. Output. In addition, the provided information is stored in the provided information area (step S414).

[0220] The provided information is shared on the information sharing network. On the other hand, if the authentication fails (step S413: N), the received data such as provided information is deleted (step S415).

[0221] In addition, as shown in the first embodiment, this embodiment also has provision information search means 3B. Therefore, instead of automatic download, it searches for and receives provision information desired by itself. It is also possible. The steps after reception are the same as the steps after S410.

[0222] The specific configuration of each part is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.

[0223] For example, in the first to fourth embodiments, different collation lists have been described. However, a system that combines all functions or a system that combines arbitrary functions is also conceivable.

[0224] Also, the information provider side device and the information receiver side device may provide the provided information management device. It may also serve as a device. For example, when the provided information management device also serves as the information provider side device, the source information (source) of the provided information such as each music content is used as identification information as identification information added by the identification information adding means. By using it, it becomes easy to manage each provided information.

[0225] Furthermore, in the present embodiment, as the identification information, the provided identifier of the provided information person or the provided information identifier is used. However, the identification information such as the content name or a certain relationship is used. It is also possible to use identification information that identifies items that have In addition, each embodiment mainly explains one piece of identification information such as provider identification information (for example, in the first embodiment, it has provision information person identification information that should limit the provision information person. The power mainly explained about the shared matching list) Of course, in each embodiment, other identification information may be used. (For example, in the first embodiment, etc., a shared collation list having provided information identification information is used to manage each provided information)

Of course, the identification information of the provided information used in the collation list is not limited to that described in the present embodiment, and one identification information or a plurality of identification information may be used in combination. .

[0226] In the above embodiment, the management collation list and the shared collation list are created separately. However, a shared collation list can be created based on the management collation list, or a single collation list can be created. Matching squirrel is ignored.

[0227] Furthermore, in the present embodiment, the power of using a collation list as collation information, for example, including a case where information that is a part of collation information such as information in which collation information is changed without being listed. It is.

[0228] Power! In this embodiment, the shared collation list, which is collation information, is acquired when connected to the provided information management device S 1 and logged in. However, as with the provided information, the version information A shared collation list to which information is added may be spread in the information sharing network and received at any time when the search target information is spread or when the provided information is acquired.

[0229] In that case, the information receiver side device S3 selects either the shared collation list owned by itself or the received shared collation list based on the version information added to the shared collation list. Compare if is new.

[0230] If the received shared collation list is newer and has version information, as described above, the shared collation list receiving unit 3A uses the collation information determination unit, and the shared information is stored in the shared collation list. It is determined whether or not the collation list is a regular list. Specifically, the shared collation list is composited using the public key of the provided information management apparatus that has been received in advance, and is added to the common collation list, and is not illustrated using the digital signature. Digital authentication is performed on the shared collation list via the digital authentication server, and it is determined whether the shared collation list is a legitimate shared collation list. Judgment etc.). Then, the authorized common collation list for which authentication is permitted is stored in the information storage means 3G. If the authentication is not allowed, the shared verification list (not the regular shared verification list) is discarded, and the shared verification list that it had so far is stored as it is.

[0231] Furthermore, the above-described two types of shared collation list acceptance methods, that is, a method in which the information receiver apparatus S3 receives the shared collation list from the information management apparatus S1 provided at the time of login, and the information sharing network It may be possible to use a method that receives a spread shared collation list in the same way as provided information.

[0232] In this case, for example, priority information may be programmed such that the shared collation list received from the provided information management device S1 is preferentially received and the existing shared collation list is rewritten.

[0233] In addition, as a list that can be set by the information receiver side device S3, a list having identification information of provision information to be automatically downloaded and identification information of provision information to be automatically deleted even when received are received. You may accumulate | store the list which has. In that case, a program for automatic search / reception and automatic deletion is installed in the information receiver side device S3 in advance, and the list is compared with the list, and download or deletion operation is performed according to the list.

Industrial applicability

[0234] By utilizing the present invention, it is possible to prevent unauthorized provision information from being shared within a system in which each apparatus transmits and receives the provision information, and to provide a provider who provides unauthorized provision information. It can be effectively excluded from within the system.

Claims

The scope of the claims

An information provider side device that first provides provided information such as music content on an information sharing network using a communication model such as PeertoPeer, and a connection destination search means for searching connection destination information of a device having the provided information And using the information sharing network to establish a connection with a device having the provision information based on the connection destination information, and directly receiving the provision information and receiving the received provision information in the information sharing network A provision information management system comprising an information receiver side device that can be provided within a provision information and a provision information management device that manages the provision information;

The information provider side device is:

Identification information adding means for adding identification information such as provider identification information for identifying an information provider and provision information identification information for identifying the provision information to the provision information provided by the self, provision information provided by the self, Providing information transmitting means for transmitting in association with the identification information;

The provided information management device

Based on the identification information !, collation information creating means for creating collation information for managing the provided information;

Collation information output means for outputting the collation information created by the collation information creation means,

The information receiver side device is:

Identification information receiving means for receiving the identification information associated with the provision information, provision information receiving means for receiving the provision information associated with the identification information, and collation information reception for receiving collation information including information related to the identification information And collation information determination means for determining whether the collation information received by the collation information reception means is regular collation information;

Based on the collation information determined by the collation information determination means as the regular collation information, the identification information included in the collation information is collated with the identification information received by the identification information reception means, Depending on the content of the collation information, the provided information receiving means Collation means for outputting a control signal for controlling the provided information received,

Provision information accumulating means for accumulating provision information permitted to be accumulated by the collating means and identification information associated with the provision information;

Provided information transmitting means for transmitting provided information stored in the provided information storage means when receiving a provided information request signal transmitted from another information supplier-side device is provided. Provide information management system.

The information provider side device is:

A provider identification information adding means for adding provider identification information for identifying the information provider to the provided information provided by the self;

Providing information transmitting means for transmitting the providing information provided by the user in association with the provider identification information for identifying the information provider;

The provided information management device

A provider identification information management means for managing provider identification information of an information provider permitted to provide information; and

Collation information creating means for creating collation information including provider identification information permitted to provide information based on the provider identification information management means;

The information receiver side device is:

Provider identification information receiving means for receiving the provider identification information associated with the provision information;

A provision information receiving means for accepting provision information associated with the provider identification information for identifying the information provider;

A collation information accepting means for accepting collation information including information relating to provider identification information of an information provider permitted to provide information;

Based on the provider identification information received by the provider identification information receiving means and the provider identification information received by the verification information receiving means, the provided information received by the provided information receiving means is information Information provided by the authorized information providers A verification means for outputting a storage permission signal indicating that storage of the provided information is permitted, if the information is provided by the information provider who has been permitted to provide the information; Provision information accumulating means for accumulating provision information permitted to be accumulated by the means and provider identification information associated with the provision information;

Characterized in that it has provision information transmission means for transmitting the provision information stored in the provision information storage means upon receipt of a provision information request signal transmitted from another information supplier-side device. The provided information management system according to claim 1.

[3] The provision information management device has a deletion instruction means for transmitting a deletion instruction of the provision information stored in the information receiver side device based on the identification information! Or the provided information management system described in 2.

4. The provision information management system according to claim 1, wherein the provision information management device has provision information storage means for storing provision information transmitted from the provider side device.

[5] The collation information creating means creates collation information including identification information relating to provision information prohibited from distribution in the information sharing network and provision information to be deleted.

Based on the collation information that the provided information collating unit determines to be regular collation information, the identification information included in the collation information is collated with the identification information received by the identification information receiving unit, If it matches the identification information included in the collation information, a control signal is output indicating that the provision information associated with the identification information is not received, or the provision information associated with the identification information is information. 5. The provided information management system according to claim 1, wherein a control signal for deleting the storage means force is output.

[6] Information provider side that first provides provided information such as music content on an information sharing network using a communication model such as PeertoPeer, and a connection destination that searches connection destination information of the device that has the provided information The information sharing network is used to establish a connection with the apparatus having the provision information based on the connection destination information, and the provision information is directly received, and the received provision information is An information receiver side device that can be provided in the information sharing network, a provided information management device that manages the provided information, and In a program for causing a computer used in a provided information management system to function,

The information provider side device,

Identification information adding means for adding identification information such as provider identification information for identifying an information provider and provision information identification information for identifying the provision information to the provision information provided by the self, provision information provided by the self, Function as providing information transmitting means for transmitting in association with the identification information;

The provided information management device;

Function as collation information output means for outputting the collation information created by the collation information creation means,

The information receiver side device;

Based on the collation information determined by the collation information determination means as the regular collation information, the identification information included in the collation information is collated with the identification information received by the identification information reception means, Matching means for outputting a control signal for controlling the provided information received by the provided information receiving means in accordance with the content of the matching information;

A provision information management program for causing provision information stored in the provision information storage means to function as provision information transmission means for transmitting upon receipt of a provision information request signal transmitted from another information supplier-side device. In a program for causing a computer to function,

The provider side device,

The provision information provided by the self functions as provision information transmission means for transmitting in association with the provider identification information for identifying the information provider,

The provided information management device;

The information receiver side device;

Based on the provider identification information received by the provider identification information receiving means and the provider identification information received by the verification information receiving means, the provided information received by the provided information receiving means is information Check the information provided by the information provider authorized to provide the information, and if the information provided by the information provider authorized to provide the information is permitted, allow the accumulation of the provided information. Collating means for outputting a storage permission signal indicating that the information has been provided; providing information accumulating means for accumulating providing information permitted to be accumulated by the collating means and provider identification information associated with the providing information;

The provision information stored in the provision information storage means is transmitted from another information supplier-side device. 7. The provision information management program according to claim 6, wherein the provision information management program causes the information to function as provision information transmission means for transmitting upon receipt of the provided provision information request signal.

[8] In a program for causing a computer to function, the provided information management device is used as a deletion instruction means for transmitting an instruction to delete provided information stored in the information receiver-side device based on the identification information! The provided information management program according to claim 6 or 7 for functioning.

[9] A program for causing a computer to function, wherein the provision information management device functions as provision information storage means for storing provision information transmitted from the provider side device. The provided information management program.

[10] In a program for operating a computer,

The provided information management device;

The information receiver side device is caused to function as collation information means for creating collation information including provision information forbidding distribution in the information sharing network and identification information related to provision information to be deleted.

Based on the collation information determined to be legitimate collation information, the identification information included in the collation information is collated with the identification information received by the identification information receiving means, and is included in the collation information. If it matches the identifiable identification information, a control signal is output indicating that the provision information associated with the identification information is not received, or the provision information associated with the identification information is deleted. 10. The provision information management program according to claim 6, wherein the provision information management program is made to function as provision information collation means for outputting a control signal to the effect.