JP2007087185A - Provided information management system and provided information management program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the unauthorized sharing, diffusion or the like of provided information effectively. <P>SOLUTION: The system in which the provided information, such as music contents, is circulated on an information shared network using a communication model, such as a PeertoPeer, is provided with: a collation information decision means 3E by which an information receiver side apparatus S3 for receiving the provided information decides whether or not the collation information received from a provided information management apparatus S1 for managing the provided information is regular collation information; and a collation means 3F for collating identification information included in the collation information with identification information received by the identification information reception means on the basis of the collation information decided to be the regular collation information and outputting a control signal which controls the provided information received by the provided information reception means in accordance with content of the collation information. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  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.

  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.

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

  However, since each content in the system is transmitted / received directly between the device having the content that is the provided information and the information receiver side device without going through the server, unauthorized music content without copyright etc. It was very difficult to prevent people from entering the network.

  In view of this, the present invention searches for information provider side devices that first provide 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. Having a connection destination search means, establishing a connection with a device having provision information based on the connection destination information using the information sharing network, receiving the provision information directly, and receiving the received provision information A provided information management system comprising an information receiver side device that can be provided in an information sharing network and a provided information management device that manages the provided information, wherein the information provider side device identifies the information provider Identification information adding means for adding identification information such as provider identification information to be provided and provision information identification information for identifying the provision information to the provision information provided by itself Verification information for managing the provision information based on the identification information, comprising provision information transmission means for transmitting the provision information provided by itself in association with the identification information The collation information creating means for creating the collation information and the collation information output means for outputting the collation information created by the collation information creating means. Identification information reception means for receiving information, provision information reception means for receiving provision information associated with the identification information, verification information reception means for receiving verification information including information related to the identification information, and verification information reception means The collation information determination means for determining whether the received collation information is regular collation information and the collation information judgment means determine that the collation information is regular collation information. Based on the collation information, the identification information included in the collation information is collated with the identification information received by the identification information receiving unit, and the provision information received by the provision information receiving unit according to the content of the collation information Collating means for outputting a control signal for controlling the information, provision information accumulating means for accumulating provision information permitted to be accumulated by the collation means and identification information associated with the provision information, and accumulation in the provision information accumulation means It is characterized by comprising provision information transmitting means for transmitting provision information when receiving a provision information request signal transmitted from another information supplier-side apparatus.

  As a result, while maintaining the effect of preventing the spread of unauthorized provision information, the number of devices that can provide provision information in this system can be increased, and the propagation efficiency related to regular provision information can be dramatically improved. it can.

  In addition, since the provided information is not managed from outside the information sharing network, it is possible to avoid being a target of hacking using the management form.

  As a specific configuration, the information provider side device includes provider identification information adding means for adding provider identification information for identifying an information provider to provided information provided by the information provider side device, and provided information provided by the information provider side device. Provision information transmitting means for transmitting the information provider in association with the provider identification information for identifying the information provider, wherein the provision information management device manages the provider identification information of the information provider permitted to provide the information Identification information management means, collation information creation means for creating collation information including provider identification information permitted to provide information based on the provider identification information management means, and collation created by the collation information creation means Collation information output means for outputting information, wherein the information receiver side device receives provider identification information associated with the provision information, provider identification information acceptance means, and the information provision Provision information receiving means for accepting provision information associated with provider identification information for identifying a provider, collation information acceptance means for accepting collation information including information relating to provider identification information of an information provider permitted to provide information, and 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 permits information provision. If it is provided information from an information provider who is permitted to provide information, a storage permission signal is output to permit storage of the provided information. Collation means, provision information storage means for accumulating provision information permitted to be accumulated by the collation means and provider identification information associated with the provision information, Providing information accumulated in providing information accumulation means, it is considered to have provided information transmitting means for transmitting in response to receiving the provided information request signal transmitted from another information supply side apparatus.

  As a result, information providers who can provide information within the information sharing network are limited, and management can be performed so that regular provision information is propagated.

  Furthermore, 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 information is leaked, it is possible to delete the illegal provision information and maintain an appropriate provision information management system.

  Further, since the provision information management device has provision information storage means for storing provision information transmitted from the information provider side device, even if there are few devices having provision information in the system, information The recipient can be sure of getting the information they want.

  In addition, the collation information creating means creates collation information including provision information that prohibits distribution in the information sharing network and identification information related to provision information to be deleted, and the provision information collation means. Is collated with 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 to be regular verification information, and is included in the verification information If it matches the 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 from the information storage means. It is also possible to output a signal.

  It is possible to prevent unauthorized provision information from being shared in a system that transmits / receives provision information by each device, and to effectively eliminate providers that provide unauthorized provision information from the system.

<First embodiment>
Embodiments of the present invention will be described below with reference to the drawings.

  The provided information management system in this embodiment appropriately distributes digital content (provided information) such as music and movies on an information sharing network using a communication model such as so-called Peer to Peer (hereinafter referred to as P2P). As shown in FIG. 1, the information provider device S2 is an information processing device provided on the provider side of the provision information and the information processing device provided on the receiver side of the provision information. An information processing apparatus in which the information receiver side device 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 a communication line such as the Internet. The provision information management device S1 is provided.

  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.

  In this embodiment, the “information provider” is, for example, an artist of music content, a content distributor that manages copyrights of the music content, and the like. Refers to those registered as available users. In other words, a person who first makes his / her provision information receivable from another information receiver side device S3 or transmits it to another information receiver side device S3 in the information sharing network of this system, so-called The primary information provider who is the source of the information provided.

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

  “Information recipient” refers to a person who accepts provision information from an information provider or the like, and refers to a person who is registered as a person who can use this facility, like the information provider. The procedure for registration, the process of obtaining identification information, and the like are the same as described above, and a description thereof will be omitted.

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

  An “information sharing network” is a connection established on the basis of connection destination information of a device having provision information, and each of the provision information etc. that each directly has in an equal position using a communication model such as Peer to Peer (P2P) A network that can transmit and receive.

  In the present embodiment, the network is an application network created by devices having specific applications (file exchange software) on an IP network, and a file in which files published by individual devices are automatically diffused. Say. Each device that forms the information sharing network has predetermined file sharing software, etc., and users can connect computers to each other to maintain the system and form a network in which files (provided information) can be exchanged. is doing. 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 and spread. Network. More specifically, first, in the network, search target information including a search key and connection destination information of the provided information is distributed to each device in the network as information about the provided information. The information receiver side device S3 searching for 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 provision information is read from the search target information, the direct connection with the apparatus is established, and the provision information is received.

  “P2P” refers to one form of a communication model in which information is exchanged on an equal footing. Specifically, each device (information provider device S2, information receiver device S3, etc.) is symmetrical. It is a technology for building distributed applications that play a role. That is, 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.

  “File sharing software” refers to software for sharing files held by each device via the Internet, for example, and the file sharing software in the present embodiment also has a file search function.

1. Device Configuration Next, the device 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, and the like. In the 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, and may be overseas.

  The information provider side device S2 and the information receiver side device S3 are communication devices such as an input device such as a keyboard and a mouse, an output device such as a display and a speaker, a storage device such as an HD, a CPU, an internal memory, and a communication interface. It is equipped with a device and has a WEB browser and the like.

  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. Note that the provided information management device S1 is not limited to be provided in a centralized location or distributed, and the location is not limited to domestic, and may be overseas.

  In the present embodiment, the provided information management device S1 mainly manages provider identification information and plays a role for distributing music content provided by a legitimate information provider. And so on.

2. As shown in FIG. 2, the provision information management system according to the present embodiment first provides provision information such as music contents on an information sharing network using a communication model such as PeertoPeer. S2 and an apparatus (S1, S2, S3) having connection destination search means for searching for connection destination information of the apparatus having the provision information and having the provision information based on the connection destination information using the information sharing network ) And an information receiver side device S3 that can receive the provided information directly and provide the received provided information in the information sharing network, and a provided information management device that manages the provided information A provision information management system comprising S1 and storing the information receiver side device S3, the information provider side device S2 and the provision information management device S1. In accordance with a predetermined program stored in the device, the CPU and peripheral devices in the device operate to exhibit the following various functions.

  Hereinafter, it explains in full detail for every apparatus.

  The provided information management device S1 is for managing an information provider and individual provided information that can provide music content or the like as a primary provider in the system as described above. For example, illegal copy content is stored in the system. It plays a role of managing identification information such as provider identification information in order to prevent them from being mixed.

  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, and shared collation list creation Means 1F, shared collation list transmission means 1G, delete instruction means 1H, and information storage means 1I.

  The provider information accepting means 1A is mainly used in the registration procedure of the information provider, and various information providers necessary for registration using the communication device such as the input device or the communication interface. Accept information.

  The identification information management unit 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), and uses the provider information reception unit 1A. By receiving the provider information and determining whether or not the predetermined registration requirement items are satisfied, etc., and determining whether or not to grant the provider identifier that is the provider identification information. A unique provider identifier is assigned to each provider.

  Furthermore, it is assumed that the information provider to which the provider identifier is assigned using an unauthorized provider information receiving means (not shown) is an unauthorized information provider (providing unauthorized copy content later). When the unauthorized provider information is accepted, the corresponding information provider is searched from a collation list described later based on the provider identifier included in the unauthorized provider information, and the provider identification information of the unauthorized provider is obtained. An instruction signal to be deleted from the collation list is output.

  In this embodiment, the information provider who is permitted to provide information is the first provider in the system (information sharing network), and the other provider of the information provided as the primary provider. A person who is allowed to receive from the apparatus S3 or transmits to another apparatus S3 on the information receiver side, that is, a person who is permitted to be a transmission source of provided information. In the present embodiment, the information receiver can be a secondary information provider because the received information can be transmitted in response to a request from another device.

  The provider identification information transmission unit 1C plays a role of transmitting 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.

  When a new information provider for providing information in the system (in the information sharing network) is permitted and the key generation command 1D is received from the identification information management unit 1B, the key generation unit 1D identifies the provider of the provider. Corresponding to the information, it is responsible for generating a pair of secret key and public key necessary for encryption of provided information provided in the system. The private key is not disclosed to the public and is held by the administrator and the information provider out of a pair of key pairs (secret key and public key) used in the public key cryptosystem. Encrypted by On the other hand, the public key is widely disclosed to the administrator and the information receiver, and can be decrypted only with the public key corresponding to the data encrypted with the secret key.

  The secret key and the public key are set for each information provider identifier. In addition, encryption information (public key, secret key) unique to the provided information management apparatus is also set in order to ensure that the shared collation list described later is a regular list.

  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.

  The management collation list creating unit 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 unit 1B. The management verification list is list data that can list information providers who are permitted to provide information to the system, and is necessary for the administrator to manage provider identification information and the like. It is. Further, only the administrator uses the management verification list.

  Specifically, the information provider information received from the key generation unit 1D and the provider information reception unit 1A (provider name, provision) upon receiving the provider permission signal from the identification information management unit 1B Qualification, IP address and port number as connection destination information, such as public key and secret key as encryption information) are added to the management verification list as data associated with the information provider identifier. Also, when receiving the illegal provider deletion command signal from the identification information management means 1B, the provider identification information stored in the management verification list is deleted, and the management verification always having the latest provider identification information Create a list.

  The shared collation list creation unit 1F is a collation list creation unit that creates a collation list for managing the provision information based on the identification information. Specifically, the common collation list creation unit 1F is based on the provider identification information management unit 1B. This is to create a collation list for the information provider only including the identification information of the provider who is permitted to provide the information. The recipient of the provided information judges whether it is information provided by a legitimate provider. Therefore, it has a function of creating a shared collation list including provider identification information and the like necessary for this purpose. The shared collation list is list data that can list information providers who are allowed to provide information to the system, and is shared by all users who use the system.

  Specifically, similar to the management collation list creation means 1E, it is accepted from the key generation means 1D and the provider information acceptance means 1A when receiving the provider permission signal from the identification information management means 1B. In addition, the information provider information (provider name, provision qualification, IP address or port number as connection destination information such as public key as encryption information) is associated with the information provider identifier as provider identification information, Add to shared collation list. Note that the shared collation list does not include secret key information. In addition, the shared collation list includes an administrator identifier serving as management identification information and digital authentication for guaranteeing that the collation list is a legitimate list (guarantee that tampering has not occurred, guarantee of origin). The digital signature and the information on the private key of the provided information management apparatus used for realizing the digital signature are associated with each other.

  On the other hand, when receiving the illegal provider deletion command signal from the identification information management means 1B, the provider identification information stored in the shared verification list is deleted, and the shared verification list having the latest provider identification information is always obtained. create.

  The shared collation list transmission unit 1G is a collation list output unit that outputs the common collation list created by the common collation list creation unit, and more specifically, the common collation list created by the common collation list creation unit 1F. And an administrator identifier as management identification information, and a digitally authenticated digital signature for guaranteeing that the collation list is a legitimate list (guaranteeing that it has not been tampered with, guarantee of origin) In addition, it has a function of transmitting the shared collation list to the information receiver side device S3 in a state encrypted with the secret key of the provided information management device. That is, 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 collation list at that time is read from the information storage means 1I described later, and the management identification information The information that is the source of the request signal with a guarantee for the shared verification list by adding the administrator identifier and digitally authenticated digital signature and encrypting with the private key of the provided information management device The shared collation list is transmitted to the recipient side device S3.

  The deletion instruction unit 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 for instructing deletion of the provision information associated with the provider identifier of the unauthorized information provider from the provision information already stored in the information receiver side apparatus S3 is provided to the information receiver side apparatus S3. The information is forcibly transmitted and the information provided by an unauthorized information provider is deleted.

  The deletion program, for example, when a verification list request signal is received from the information receiver side device S3, transmits a new shared verification list from which the illegal provider identification information has been deleted, and also to the information receiver side device S3. On the other hand, it is conceivable to forcibly transmit the deletion program. At that time, the old shared collation list stored in the information receiver side device S3 is compared with the new shared collation list, the unauthorized provider identification information on the old shared collation list is detected, and the illegal provision is made. A deletion program for deleting the provision information having the person identification information may be transmitted. It is also conceivable that the deletion program is simultaneously spread when the search target information is spread.

  The information storage means 1I 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 information (public key, secret key), etc. The administrator collation list data including the provider information is stored. In addition, a provision information identifier provided by the provider may be stored in association with the provider identifier. In addition, the management collation list data is used to ensure that the management identifier is an administrator identifier and that the collation list is a legitimate list (guaranteeing that it has not been tampered with, guarantee of origin). In addition to digitally authenticated digital signature information, it is stored in association with encrypted information (public key, secret key) of the provided information management apparatus.

  Further, in the shared collation list area, based on each provider identifier, in addition to provider information such as the provider name, provision qualification, connection destination information (IP address, port number), public key, etc., an administrator identifier The data of the shared collation list including etc. is stored. In addition, the data of the shared collation list includes an administrator identifier as management identification information, and a digital for guaranteeing that the collation list is a legitimate list (guarantee that tampering has not occurred, guarantee of origin) The authenticated digital signature information and the secret key information used for realizing the digital signature are stored in association with each other.

  Furthermore, the provision information transmitted from the information provider side device S2 is accumulated in the provision information area. In the present embodiment, the search target information is stored based on each provision information identifier (hash value). Stores information such as a file name, key information, file size, update time, connection destination information (IP address, port number) of provided information, and provided information including the contents of the music file itself (main body) Stores identifiers, etc.

  Here, the hash value that is the provided information (file) identifier summarizes the entire contents of one provided information, so even if the file names are different, if the hash values are the same, It can be handled as provided information.

  The hash value is unique data of a certain length derived from a sequence of character strings by a mathematical algorithm. In the present embodiment, the hash value is generated using a hash function called SHA-1. ing. Specifically, in the hash function, a 160-bit hash value is generated from an 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 whether the original text has been tampered with during communication, it is preferable to generate hash values using the hash function at both ends of the communication path and compare the two.

  In addition, as a method for deriving a hash value, it is conceivable to use a 128-bit MD5 as a hash function, obtain a hash value from the entire content of the provided information, and use it as an identifier for identifying a file. In this process, since the file name and other information are not used together, the hash value of the file becomes the same value as the general-purpose MD5 hash value used for checking the contents of the file.

  Next, the information provider side device S2 is a device operated by a primary information provider capable of providing music content or the like in the system using the provider identifier assigned from the provided information management device S1. It plays the role of providing its own music content and distributing it within this system.

  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, It has a function as provided information transmitting means 2H.

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

  The provider information transmission means 2A is used when registering with the provision information management device S1 and having a unique provider identifier assigned thereto. Providing information, search target information, etc.) to the providing information management device S1.

  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 mainly uses an input unit such as a communication unit or a keyboard. Do.

  The provision information request receiving means 2C receives a provision information request signal transmitted from the information receiver side device S3 of provision information, and identifies at least provision information such as a search key included in the search target information, for example. Provision information identification information necessary for this, and connection destination information of the information receiver side device S3 of the provision information are received.

  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 identifies at least provider identification information for identifying the information provider and the provision information. A function of adding identification information such as provided information identification information to provided information provided by itself. That is, based on the provision information identification information included in the provision information request signal, the provision information stored in the information storage means 2G to be described later is read out, and the provider information that is the provider identification information of its own It has a function of creating provision information for transmission to which a provision information identifier (hash value) and an administrator identifier which is management identification information are added.

  The provided information management means 2E has a function of individually managing provided information provided by itself. Each provided information management unit 2E is provided with a provided information identifier (hash value), and the provided information main body (music information, video information, etc.) In addition, additional information related to the provided information (for example, a content title serving as index information, a playback time, an artist name, an album name, a genre, a content, a selling price when selling the provided information, a viewing price, Providing information such as the number of times, viewing information such as viewing availability).

  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 provided information desired by the information receiver, based on the provided information. Includes information serving as a search key to be input when searching for provided information. The digest information management means 2F also has a function of creating the provision information identifier (hash value), and manages each search target information in association with the provision information identifier (hash value). The search target information may include a file name, key information, size, update time, connection destination information (IP address, port number), and the like. Furthermore, it has a function of generating digest information to be used in digital authentication by the provided information matching unit 3F described later. Specifically, digest information that is a hash value is generated from the provided information and its own provider identification information (provider identifier) using a hash function such as the SHA-1.

  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, the provider information management area is associated with a provider identifier which is provider identification information, and is self-information such as a provider name, provision qualification, connection destination information (IP address, port number), secret key, etc. The provider information is stored.

  Further, in the provided information area, provided information that can be transmitted to other devices is accumulated, and associated with the provided information identifier (hash value), the file name, the key information, the size, and the update time that are the search target information In addition to accumulating connection destination information (IP address, port number), in addition to provided information including a provided information body (music information, video information, etc., which is the content of the file itself) in association with a provided information identifier (hash value) , Additional information related to the provided information (for example, a content title serving as index information, playback time, artist name, album name, genre, content, sales price when selling the provided information, and the number of views Viewing information such as whether or not viewing is possible) in association with information provider identification information.

  Note that the search target information and provision information are created using the provision information management means 2E and the digest information management means 2F.

  The provided information transmitting means 2H plays a role as a transmitting means for transmitting its own search target information and provided information in association with the provider identification information and provided information identification information added using the provider identification information adding means 2D. Bear.

  Specifically, triggered by receiving the provision information request signal, the provision information requested from the storage means is read out based on the provision information identifier included in the provision information request signal, and the information receiving side apparatus S3 is read. Send. Also, search target information to be searched is transmitted (spread) to other devices.

  Note that connection management means (not shown) is provided in order to connect to other devices in the information sharing network. The connection management unit manages connection destination information of another device and connection to the device. Specifically, in order to connect a search link in the information sharing network, connection destination information of other devices is collected and stored in the information storage unit 2G. The connection management means performs management of a TCP connection (BSD socket) used for actual communication and communication buffering for asynchronous communication together with the connection destination information.

  The connection destination information of other devices in the information sharing network is acquired at the following two timings. First, the connection destination information such as the IP address, port number, connection line upload speed, etc., is received when the connection is established when the connection destination information of the other device accumulated by the initial connection destination information and the once connected device is established. To get. In addition, after connecting search links using them, the connection environment etc. is acquired directly from the other party.

  Information passed from other devices before connection includes IP address (IPv4), port number (TCP), upload speed (in Kbytes / second), and the like. Direct / via NAT / DDNS / no open port).

  The information receiver side device S3 includes at least a shared collation list accepting means 3A, provided information search means 3B, provided information request means 3C, provider identification information accepting means 3D, provided information accepting means 3E, provided information collating means 3F, and information storage. It has functions as means 3G, provision information request acceptance means 3H, provision information transmission means 3I, provision information output means 3J.

  The shared collation list accepting means 3A is a means for accepting a shared collation list for information provider limitation, which is collation information including at least provider identification information of an information provider who is permitted to provide information. Each time the information recipient connects to the system, the information receiver sends a shared collation list request signal to the provided information management device S1, and receives the latest shared collation list from the provision information management device S1 at that time. .

  In addition, the shared collation list receiving unit 3A also functions as a collation information determination unit that determines whether the shared collation list (accepted collation information) is a regular shared collation list transmitted from the provided information management device. Have.

  More specifically, in the present embodiment, the public information is used to determine whether the public shared verification list is a legitimate shared verification list, and when the shared verification list is received, the provided information management apparatus received in advance The public key is used for decryption, digital authentication is performed using the digital signature added to the shared verification list, and it is determined whether the shared verification list is a legitimate shared verification list. Judgment, judgment of legitimacy of origin).

  Here, when it is determined that it is a regular shared collation list, the common collation list is received and stored in the information storage unit 3G described later and used in the provided information collation unit 3F described later. On the other hand, when it is not determined that the list is not a regular shared collation list (such as failure in digital authentication, unsuccessful combination), the common collation list is discarded without being accumulated.

  The provided information search means 3B searches the provided information desired by the information receiver from within this system (information sharing network) using a search key that is a keyword such as the title of the provided information, and a device having the provided information It is means for knowing the connection destination information. Specifically, when a keyword such as a title of provided information is input in a predetermined format displayed on the screen of the information receiver side device S3, the information is connected to the device performing the search through the information sharing network. Search request information (search key information) is automatically transmitted to the apparatus. 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 storing the connection destination information of the provision information. In the present 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. Note that the search target information includes connection destination information of an apparatus having provision information and an information provider identifier of the provision information. Further, the devices searched here may be all of the provided information management device S1, the information provider side device S2, and the other information receiver side device S3 existing in the present system, or may be any device.

  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 returned. . When the information receiver designates 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 packs the search key into the request and passes the request to the adjacent 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 according to the present embodiment uses a search link network to search for search target information including search key information and to spread the search target information. In both cases of spreading and searching, the search key transmitting side packs the search key in search information and sends it out, and the receiving side unpacks the search key and takes it out. For this reason, in this system, search key diffusion is also treated as a kind of search. Specifically, once a spreading request is transmitted once every 30 seconds and a spreading request is issued to a neighboring device having a search link, the neighboring device includes a search key as a response message in the spreading request. Pack and return. In this way, the search target information including the search key is distributed to the network connected by the search link.

  Note that which device is adjacent is determined based on, for example, the line speed.

  The provision information request unit 3C is used when requesting provision information to a device having provision information searched using the provision information search unit 3B. In the present embodiment, the provision information request unit 3C The connection destination information of the device having the provided information is read from the search result received using the search means 3B, 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 a device or the like having provided information by using the connection management device. To do.

  The provider identification information receiving means 3D has a function of receiving and receiving at least information related to the provider identification information associated with the provision information provided from the information provider. Also included is provider identification information associated with search target information sent along with the result.

  The provision information receiving unit 3E is a unit for receiving the provision information requested using the provision information request unit 3C. In the present embodiment, as described above, in addition to the provision information requested by itself in a state where the PtoP connection is established with the information provider side device S2, the search target information and the like are also included in the provider identification information. Receive in the associated state.

  The provided information collating unit 3F collates the identification information included in the collation information with the identification information received by the identification information receiving unit based on the collation information determined to be regular collation information. Matching 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 information.

  Specifically, based on the provider identification information received by the provider identification information reception unit 3D and the provider identification information received by the verification information reception unit, the provision information received by the provision information reception unit is , Verifying whether the information is provided from an information provider who is permitted to provide information. If the information is provided from an information provider who is permitted to provide information, the accumulation indicating that the provision of the provided information is permitted It is a collation means for outputting a permission signal, and has a function of collating whether the received provided information is provided by an appropriate information provider.

  In the present embodiment, upon receiving provision information and an information provider identifier associated with the provision information from a device having provision information, digest information is created from the provision information and the provider identifier using the hash function. To do. Next, a public key associated with the provider identifier is searched from the shared collation list, and the provided information is digitally transmitted by an authentication server such as a provided information management apparatus using the public key and the digest information. When the authentication is successful and the digital authentication is successful, a storage permission signal is output to permit storage of the provided information.

  The information storage means 3G stores the shared collation list, provided information, programs, etc. in various areas.

  Specifically, in the shared collation list area, based on each provider identifier, in addition to provider information such as the provider name, provision qualification, connection destination information (IP address, port number), public key, etc., management The data of the shared collation list including the person identifier etc. is stored.

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

  Also, in the provided information area, provided information received from other devices is accumulated. In the present embodiment, based on each provided information identifier (hash value), a file name, a key that is search target information, a key Information, file size, update time, connection destination information (IP address, port number) of provision information are stored, and the provision information (file contents themselves) is stored. Further, the search target information and the provided information are associated with the provider identifier of the providing information person who is the transmission source.

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

  The provision information transmitting means 3I transmits provision information accumulated in the provision information area when receiving a provision information request signal transmitted from another information receiver side device S3. More specifically, as a result of searching for information in its own provided information area by the provided information request accepting means 3H, if information requested from another device matches the provided information accumulated in its own provided information area, The matched search target information and provided information are transmitted to the requesting apparatus in a state associated with the provider identifier. Note that information is directly transmitted to and received from the receiving apparatus using the connection management means. In addition, the search target information is spread using the provided information transmitting means 3I.

  The provided information output means 3J is an output means for outputting provided information on the basis of the collation result of the provided information collating means 3F. The provided information collating means 3F receives a signal indicating that the output is possible and provides a dedicated reproduction. Using a program or a general-purpose reproduction program, an image is displayed on the display screen of the information receiver side device S3 or music is reproduced as shown in FIG. 3 or FIG.

Next, the operation of each apparatus will be described with reference to the flowcharts of FIGS.
(1) Register provided information person identifiers (create collation list)
First, as shown in FIG. 5, the registration request information from the information provider side apparatus S2 that the provision information management apparatus S1 desires to newly register using the provider information receiving means 1A, the registration means (not shown) or the like. 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 to grant a provider identifier that is provider identification information by determining whether or not the received provider information satisfies a predetermined registration requirement item. A permission determination is made, a unique provider identifier is assigned to a provider that satisfies certain requirements, and a key generation command signal is output to the key generation unit 1D. Then, in response to the key generation command signal, the key generation unit 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, the IP address and port number as connection destination information, such as public key and secret key as encryption information, are added to the administrator list to create the latest management collation list (step S4).

  Further, the provider identifier added to the management verification list is transmitted to the information provider side device S2 registered together with the secret key (step S5).

  Next, based on the management collation list and 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 provided from the regular provider The latest shared collation list including the provider identification information and the like necessary for determining whether the received information is determined or not is created (step S6).

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

  Here, “sharing on the information sharing network” means that the information sharing network is used to disclose various information (files) that the device itself has so that other devices can receive the information.

In the present embodiment, all the constituent devices of the information sharing network share the same file exchange software and realize file sharing in the information sharing network using a communication method such as P2P. Yes.
(2) Providing new provision information in the information sharing network As shown in FIG. 6, the information provider side device S2 determines that there is new provision information by accumulating the new provision information in the provision information area. (Step S101), using the digest management means, creates search target information that serves as a guideline when searching for the provided information desired by itself from the provided information, and provides the provided information using the provided information management means 2E. Create (step S102).

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

  In addition to the provided information main 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, album name, index information) A genre, content, sales price when selling the provided information, viewing information such as the number of views, viewing availability, etc.) is associated with the provided information identifier (hash value), and one offer Create information.

  Furthermore, digest information used for digital authentication is generated by the provided information matching unit 3F described later. Specifically, digest information that is a hash value is generated from the provided information and its own provider identification information (provider identifier) using a hash function such as the SHA-1.

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 are connected to other devices. Accordingly, it is disclosed and shared in a transmittable state (step S104).
(3) Requesting Provision Information First, as shown in FIG. 7, the information receiver side device S3 that requests provision information connects to the provision information management device S1 and logs in (step S201: Y), and the latest sharing is performed. The collation list is received (step S202), and it is determined whether or not the shared collation list is a regular list by using collation information determination means included in the common collation list receiving means 3A. Specifically, the shared collation list is compounded using the public key of the provided information management apparatus that has been received in advance, and the digital collation list is added via a digital authentication server (not shown) using a digital signature added to the common collation list. Digital authentication is performed on the shared verification list, and it is determined whether the shared verification list is a legitimate shared verification list (determination that it has not been tampered with, determination of legitimacy of origin, etc.). Then, the authorized shared collation list for which authentication has been accepted is stored in the information storage means 3G (step S203: Y). Note that a shared collation list for which authentication has not been approved (not a regular shared collation list) is discarded (step S205), and a new shared collation list is received again.

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

  Specifically, the information is first connected to the information sharing network and searched using the P2P file sharing software. The name (or part of the file) of the file being searched for is entered in the [Search word] text box displayed on the display means of the information receiver side device S3, and the search key is pressed by pressing the [Search] button. Accept. Since each device in the information sharing network is connected in a network, it transmits file search request data to another adjacent device. If the device does not have a search key, the search destination device repeatedly requests (transmits) the search request data to the adjacent device. Then, some time, 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 matching the search key. The search ends when

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

  Thereafter, the information receiver side device S3 directly connects to the device having the provision information based on the connection destination information included in the search target information by the P2P method in order to download the provision information found by the search. Then, a provision information request signal is transmitted (step S206).

When the provision information and the information provider identifier associated with the provision information are received (step S207), digest information is created from the provision information and the provider identifier using the collating means. (Step S208). Next, a public key associated with the provider identifier is searched from the shared collation list, and digital information of the provided information is obtained using an authentication unit (not shown) of the provided information management device S1 using the public key. If the authentication is successful and the digital authentication is successful (step S209: Y), the provided information is obtained using the output means of the information receiver side device S3, such as playing music using the output means or displaying video. Output. 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) Sending provision information On the other hand, a device having provision information requested by the information receiver side device S3 is provided when it is directly connected to the information receiver side device S3 by P2P and receives the provision information request signal. Based on the provision information identifier included in the information request signal, the provision information requested from the storage means is read out and transmitted to the information receiver side device S3.
(5) Delete provided information provider identifier, etc. As shown in FIG. 8, provided information management device S1 uses illegal provider information receiving means 1A (not shown) to provide, for example, illegal copy content. When receiving and receiving unauthorized information provider information related to an unauthorized information provider (step S301), the corresponding information provider is selected from the management collation list based on the provider identifier included in the unauthorized provider information. Search is performed (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). Thereafter, 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).

  On the other hand, the provided information management device S1 uses the unauthorized provider information receiving means 1A (not shown) to receive, for example, unauthorized information provider information related to an unauthorized information provider that provides illegal copy content or the like. If received, 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.

  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 for instructing deletion of the provision information associated with the provider identifier of the unauthorized information provider from the provision information already stored in the information receiver side apparatus S3 is provided to the information receiver side apparatus S3. The information is forcibly transmitted and the information provided by an unauthorized information provider is deleted.

  With the configuration described above, it is possible to increase the number of devices that can provide provision information in the system while preventing unauthorized provision information from circulating, and to dramatically improve the propagation efficiency related to regular provision information.

  Further, based on the provider identification information received by the provider identification information receiving unit 3D and the provider identification information received by the shared collation list receiving unit 3A, the information receiver side device S3 provides the provided information. If the provided information received by the accepting means 3E is provided information from an information provider who is permitted to provide information, the provided information received from the information provider permitted to provide information is provided. Provision information collating means 3F for outputting an accumulation permission signal for permitting accumulation of information, provision information permitted to be accumulated by provision information collating means 3F, and provider identification information associated with the provision information are accumulated. The information storage means 3G and the provision information stored in the information storage means 3G are triggered by receiving the provision information request signal transmitted from the other information receiver side device S3. By providing the provision information transmitting means 3I for transmitting, the information receiver side device S3 allows only provision information from the information provider permitted to provide information, so that illegal provision information sharing, spreading, etc. It can be effectively prevented.

  Also included is provider identification information management means 1B for managing provider identification information of an information provider who is permitted to provide information, and provider identification information permitted to provide information based on the provider identification information management means 1B. Since the provision information management device S1 includes the shared collation list creating unit 1F that creates the collation list and the shared collation list transmission unit 1G that outputs the collation list created by the common collation list creation unit 1F. Thus, the collation list can be properly managed and illegal distribution of distribution information can be prevented more effectively.

  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. Even if the provided information leaks into the system, the illegal provided information can be deleted to maintain an appropriate provided information management system.

  In addition, even if the provision information management device S1 has provision information storage means 1I for storing provision information transmitted from the provider side device, even if there are few devices having provision information in the system. The information recipient can obtain the desired information.

  Further, 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 flowing in the system can be collectively displayed. Can also be managed.

Further, the provided information receiver side device S3 has connection destination search means for searching for connection destination information of the device having the provided information, and the connection destination information is obtained using an information sharing network using a communication model such as PeertoPeer. By establishing a connection with the apparatus having the provision information based on the information and directly transmitting / receiving the provision information, the provision efficiency of the provision information can be improved.
<Second embodiment>
In the first embodiment, an information provider that can provide information in the information sharing network by flowing a collation list for limiting the information provider including the provider identification information permitted to provide information in the information sharing network. Limited and managed the information provided.

  In the second embodiment, contrary to the first embodiment, the provider of the information provider who is not allowed to flow in the information sharing network (prohibits distribution) and the information provider who is transmitting the provision information When the identification information such as the identification information 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 displays the provided information associated with the identification information. A configuration for ignoring without receiving or deleting provided information stored in the information storage means 3G will be described.

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

  The provided information management device S1 manages a collation list for automatic deletion that is collation information for excluding illegal provision information from the information sharing network.

  When the management collation list creation means 1E possessed by the provision information management device S1 receives information on an unauthorized information provider or unauthorized provision information from an unauthorized information reception means (not shown), the unauthorized information provider or unauthorized It has a function of creating a management collation list including identification information related to provided information. The management collation list that is a deletion collation list is list data that can list information providers and provision information that are prohibited or deleted from distribution to the system, and the administrator manages provider identification information and the like. It is necessary to do. Further, only the administrator uses the management verification list.

  Specifically, when receiving information (identification information) or the like regarding the illegal provider or the illegal provision information, the identification information is compared with the identification information included in the management collation list stored in the information storage unit 1H. 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, information on the provision information (identification information), etc. are added and always updated. 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 destination information, etc.) A public key, a secret key, etc.) may be held as data associated with the 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.

  Here, the hash value that is the provided information (file) identifier summarizes the entire contents of one provided information, so even if the file names are different, if the hash values are the same, It can be handled as provided information.

  In addition, 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 accumulated in the information accumulation means 1H, and if both match, Then, a command signal for deleting the provision information associated with the identification information is output.

  The shared collation list creation unit 1F is a collation list creation unit that creates a collation list for managing the provided information based on the identification information. Specifically, based on the fraudulent information reception unit, It creates a collation list for automatic deletion that includes identification information related to information providers that are prohibited from distribution or information to be deleted, and information to be provided. It has a function of creating a shared collation list for automatic deletion including identification information necessary for determining whether or not the information is provided by the user. Note that the shared collation list for automatic deletion is list data that can list information providers that are prohibited from providing information to the system and information that is prohibited from being distributed. Shared by all.

  Specifically, similar to the management collation list creation unit 1E, when receiving information (identification information, etc.) related to the illegal provider and the illegal provision information, the identification information and the sharing stored in the information storage unit 1H The identification information included in the verification list 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. Create a shared collation list. The shared collation list may have only identification information, or may be encrypted information such as the information provider information (provider name, provision qualification, IP address or port number as connection destination information). A public key or the like) may be held as data associated with the information provider identifier.

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

  Here, the hash value that is the provided information (file) identifier summarizes the entire contents of one provided information, so even if the file names are different, if the hash values are the same, It can be handled as provided information.

  In addition, the shared collation list includes an administrator identifier serving as management identification information and digital authentication for guaranteeing that the collation list is a legitimate list (guarantee that tampering has not occurred, guarantee of origin). The digital signature and the private key information of the provided information management apparatus used for the digital signature are associated with each other.

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

  In the present embodiment, the information of the entire shared collation list is output to the information receiver side device S3 that has logged in for the first time. However, after the second time, there has been a change such as addition from the existing shared collation list. Are output as change information for the shared collation list.

  Specifically, in the identification information (newly prohibited identification information, etc.) that is the changed part of the shared matching list changed by the shared matching list creating means 1F, an administrator identifier that becomes management identification information, and the matching list In a state of adding a digitally authenticated digital signature for guaranteeing that it is a legitimate list (guaranteeing that it has not been tampered with, guarantee of origin), and encrypting it with the private key of the provided information management device S1, It has the function to transmit the information which changes the shared collation list which information receiver side apparatus S3 has toward information receiver side apparatus S3. That is, by receiving a shared collation list request signal that is an identification information request signal transmitted from the information receiver side device S3, the latest shared collation list at that time is read from the information storage means 1I described later, and the shared collation list is read. The shared collation list is transmitted to the information receiver side device S3 that is the transmission source of the request signal, with information that can determine that the list is genuine.

  The information storage means 1I 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, the management collation list created based on the hash value serving as the provision information (file) identifier is stored. In addition to the provided information identifier, the information provider identifier of the information provider that is subject to deletion or prohibition is stored, and based on each information provider identifier, the provider name, provision qualification, connection Data of an administrator collation list including provider information such as destination information (IP address, port number) and encryption information (public key, secret key) is stored. In addition, the provision information identifier provided by the provider is also stored in association with the provider identifier.

  In addition, the management collation list data includes an administrator identifier that serves as management identification information, and guarantees that the collation list is a legitimate list (guarantee that tampering has not occurred, guarantee of origin) In addition to the digitally authenticated digital signature information, it is stored in association with the encrypted information (public key, secret key) of the provided information management apparatus.

  In the shared collation list area, the automatic collation common collation list created based on the hash value serving as the provision information (file) identifier is stored. In addition, in addition to the provision information identifier, information provider identifiers to be deleted or prohibited are stored, and based on each provider identifier, the provider name, provision qualification, connection destination information (IP address) , Port number), public key, etc., as well as shared collation list data including an administrator identifier and the like. In addition, the data in the shared collation list is digitally authenticated to ensure that the collation list is a legitimate list (guarantee that it has not been tampered with, guarantee of origin). The digital signature information and the private key of the provided information management device S1 are stored in association with each other.

  Furthermore, the provision information transmitted from the information provider side device S2 is accumulated in the provision information area. In the present embodiment, the search target information is stored based on each provision information identifier (hash value). In addition to storing a certain file name, key information, file size, update time, connection destination information (IP address, port number) of provided information, provided information including the provided information main body (the contents of the music data file itself) The provider identifier is stored.

  In addition, it has the same structure as 1st embodiment except the said means.

  The information providing side device S2 has the same configuration as that of the first embodiment.

  As a premise, the information supply / demand side apparatus S3 prohibits (does not transmit / receive) the provided information having the identification information (provider identification information or provided information identification information) that matches the identification information included in the automatic deletion shared collation list. In addition, in the case of the provision information stored in the information storage means 1I, it has a function (program) for deleting the provision information.

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

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

  In addition, the shared collation list receiving unit 3A serves as a collation information determination unit that determines whether the shared collation list (accepted collation information) is information related to the regular shared collation list transmitted from the provided information management device. It also has a function.

  More specifically, in the present embodiment, the public information is used to determine whether the public shared verification list is a legitimate shared verification list, and when the shared verification list is received, the provided information management apparatus received in advance The public key is used for decryption, digital authentication is performed using the digital signature added to the shared verification list, and it is determined whether the shared verification list is a legitimate shared verification list. Judgment, judgment of legitimacy of origin).

  Here, when it is determined that it is a regular shared collation list, the common collation list is received and stored in the information storage means 3G described later.

  In the present embodiment, the information receiver side device S3 receives the shared collation list already stored in the information storage means 3G, which will be described later, and the common collation list reception means 3A, and determines that the information is correct. The change information related to the shared collation list is compared, and if the change information newly has, for example, identification information to be deleted / prohibited, data change such as adding the identification information to the common collation list is performed.

  On the other hand, when it is not determined that the list is not a regular shared collation list (such as failure in digital authentication, unsuccessful combination), 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 unit 3F collates the identification information included in the collation information with the identification information received by the identification information receiving unit 3D based on the collation information determined to be regular collation information. The collating unit outputs a control signal for controlling the provided information received by the provided information receiving unit 3E according to the content of the information.

  Specifically, identification information such as provider identification information and provision information identification information received by the provider identification information receiving means 3D is collated with identification information included in the shared collation list, and the common collation list is displayed. If it matches the identification information included, a control signal is output indicating that the provision information associated with the identification information is not received.

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

  Also, the 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 collation list, a control signal is output to delete the provision information associated with the identification information from the information storage means 3G.

  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, the shared collation list area mainly stores the common collation list created based on the hash value serving as the provision information (file) identifier. In addition to the provided information identifier, an information provider identifier to be deleted or prohibited is stored. Based on each provider identifier, the provider name, provision qualification, connection destination information (IP address, In addition to provider information such as port number) and public key, data of a shared collation list including an administrator identifier and the like is stored. In addition, the data of the shared collation list 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.

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

Also, in the provided information area, provided information received from other devices is accumulated. In the present embodiment, based on each provided information identifier (hash value), a file name, a key that is search target information, a key Information, file size, update time, connection destination information (IP address, port number) of provision information are stored, and the provision information (file contents themselves) is stored. Further, 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.
<Third embodiment>
In 1st embodiment and 2nd embodiment, the information receiver side apparatus S3 demonstrated the form which acquires provision information actively using an information sharing network.

  In the third embodiment, a collation list for automatic download is made to flow in the information sharing network, and provided information matching the identification information included in the collation list is sent to the information receiver side device S3 in the information sharing network. A configuration for automatically (passively) downloading will be described.

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

  The provided information management device S1 manages a collation list for automatic download including identification information of provided information that is automatically (passively) downloaded to the information receiver side device S3 in the information sharing network.

  The management collation list creation means 1E of the provision information management device S1 receives the identification information of the provision information that is automatically (passively) downloaded to the information receiver side device S3 by the provision information diffusion acceptance means (not shown). Then, it has a function of creating a management collation list including information providers related to the provision information to be automatically downloaded and identification information concerning the provision information. The management collation list, which is a collation list for automatically (passively) downloading provided information, is list data that can list provided information and the like automatically downloaded by the information receiver side device S3. Yes, it is necessary for an administrator to manage provider information and the like. Further, only the administrator uses the management verification list.

  Specifically, when the information provider of the provision information to be automatically downloaded, information about the provision information (identification information), etc. are received from the provision information diffusion acceptance means, the identification information and the information accumulation means 1H are stored. It compares with the identification information which the collation list for management had. If the current identification information is not present in the existing management collation list, the new identification information is added, and the latest management collation list is always created. The management 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.) A public key, a secret key, etc.) may be held as data associated with the 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.

  Here, the hash value that is the provided information (file) identifier summarizes the entire contents of one provided information, so even if the file names are different, if the hash values are the same, It can be handled as provided information.

  The shared collation list creating unit 1F is a collation list creating unit that creates a collation list for automatic download for managing the provided information based on the identification information. Creates a collation list for automatic downloads that includes information providers and information related to provided information (identification information), etc., and determines whether the recipient of the provided information is automatically downloadable information It has a function of creating a shared collation list that includes identification information necessary for this. Note that the shared collation list for automatic download is list data capable of listing provided information to be automatically downloaded, and is shared by all users who use the system.

  Specifically, similar to the management collation list creating means 1E, when receiving the information provider of the provision information to be automatically downloaded, information (identification information), etc., to be automatically downloaded from the provision information diffusion acceptance means, The identification information is compared with the identification information held in the automatic download shared collation list stored in the information storage means 1H. Then, when the identification information is not present in the existing shared collation list, information (identification information) relating to provided information that can be automatically downloaded is added, and the latest shared collation list is always created. The shared collation list may have only identification information, or may be encrypted information such as the information provider information (provider name, provision qualification, IP address or port number as connection destination information). A public key or the like) may be held as data associated with the information provider identifier.

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

  Here, the hash value that is the provided information (file) identifier summarizes the entire contents of one provided information, so even if the file names are different, if the hash values are the same, It can be handled as provided information.

  In addition, the shared collation list includes an administrator identifier serving as management identification information and digital authentication for guaranteeing that the collation list is a legitimate list (guarantee that tampering has not occurred, guarantee of origin). The digital signature and the information of the private key of the provided information management apparatus are associated with each other.

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

  In the present embodiment, the information of the entire shared collation list is output for the first time, but after the second time, only the parts that have been changed from the existing shared collation list are output as the change information of the common collation list. To do.

  Specifically, an administrator identifier serving as management identification information is added to identification information (identification information related to provision information to be newly downloaded automatically) that is a changed portion of the shared verification list changed by the shared verification list creating means 1F. A digitally authenticated digital signature is added to guarantee that the verification list is a legitimate list (guaranteed that it has not been tampered with, guarantee of origin), and encrypted with the private key of the provided information management device In this state, it has a function of transmitting information for changing the shared collation list of the information receiver side device S3 toward the information receiver side device S3. That is, by receiving a shared collation list request signal that is an identification information request signal transmitted from the information receiver side device S3, the latest shared collation list at that time is read from the information storage means 1I described later, and the shared collation list is read. The shared collation list is transmitted to the information receiver side device S3 that is the transmission source of the request signal, with information that can determine that the list is genuine.

  The information storage means 1I 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, the management collation list created based on the hash value that is the provided information (file) identifier that is automatically downloaded is accumulated. . Further, in addition to the provision information identifier, an information provider identifier of provision information to be automatically downloaded is stored. Based on each provider identifier, the provider name, provision qualification, connection destination Data of an administrator collation list including provider information such as information (IP address, port number) and encryption information (public key, secret key) is stored. In addition, the provision information identifier provided by the provider is also stored in association with the provider identifier.

  In addition, the management collation list data includes an administrator identifier that serves as management identification information, and guarantees that the collation list is a legitimate list (guarantee that tampering has not occurred, guarantee of origin) In addition to the digitally authenticated digital signature information, it is stored in association with the encrypted information (public key, secret key) of the provided information management apparatus.

  The shared collation list area mainly stores the common collation list created based on the hash value that is the provided information (file) identifier that is to be dynamically downloaded. In addition, in addition to the provision information identifier, an information provider identifier of provision information to be automatically downloaded is stored. Based on each information provider identifier, the provider name, provision qualification, In addition to provider information such as connection destination information (IP address, port number), public key, etc., data of a shared collation list including an administrator identifier and the like is stored. In addition, the data in the shared collation list is digitally authenticated to ensure that the collation list is a legitimate list (guarantee that it has not been tampered with, guarantee of origin). The digital signature information and the private key of the provided information management device S1 are stored in association with each other.

  Furthermore, automatically provided offer information is accumulated in the offer information area. In this embodiment, based on each offer information identifier (hash value), a file name and key information that are search target information In addition to storing the file size, update time, connection destination information (IP address, port number) of the provision information, provision information including the provision information main body (the contents of the file itself), a provider identifier, and the like are stored. ing.

  In addition, it has the same structure as 1st embodiment except the said means.

  The information providing side device S2 has the same configuration as that of the first embodiment.

  The information supply and demand side device S3 presupposes the provision information search for 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 or the like) for automatically retrieving and receiving information using means 3B, provision information request means 3C, etc., and accumulating provision information that matches the shared collation list.

  The shared collation list accepting unit 3A of the information supply / demand side device S3 is a unit that accepts a shared collation list for automatic download that is collation information including at least provision information identification information of provision information that is permitted to be automatically downloaded. Yes, 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 is received from the provided information management device S1 at that time.

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

  In addition, the shared collation list receiving unit 3A serves as a collation information determination unit that determines whether the shared collation list (accepted collation information) is information related to the regular shared collation list transmitted from the provided information management device. It also has a function.

  More specifically, in the present embodiment, the public information is used to determine whether the public shared verification list is a legitimate shared verification list, and when the shared verification list is received, the provided information management apparatus received in advance The public key is used for decryption, digital authentication is performed using the digital signature added to the shared verification list, and it is determined whether the shared verification list is a legitimate shared verification list. Judgment, judgment of legitimacy of origin).

  Here, when it is determined that it is a regular shared collation list, the common collation list is received and stored in the information storage means 3G described later.

  In the present embodiment, the information receiver side device S3 receives the shared collation list already stored in the information storage means 3G, which will be described later, and the common collation list reception means 3A, and determines that the information is correct. The change information related to the shared collation list is compared, and when the change information newly includes, for example, identification information to be automatically downloaded, data change such as adding the identification information to the common collation list is performed.

  On the other hand, when it is not determined that the list is not a regular shared collation list (such as failure in digital authentication, unsuccessful combination), 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 unit 3F collates the identification information included in the collation information with the identification information received by the identification information receiving unit 3D based on the collation information determined to be regular collation information. The collating unit outputs a control signal for controlling the provided information received by the provided information receiving unit according to the content of the information.

  Specifically, based on the provider identification information received by the provider identification information reception unit 3D and the provider identification information received by the verification information reception unit, the provision information received by the provision information reception unit is Verify whether the information is provided by an information provider who is permitted to provide information, and if the provided information indicates automatic download, verify that the storage permission signal is output to permit storage of the provided information. A means for verifying whether the received provided information is appropriate provided information instructing 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, digest information is obtained from the provision information and the provider identifier using the hash function. create. Next, a public key associated with the provider identifier is searched from the shared collation list, digital authentication of the provided information (digest information) is performed using the public key, and provided when the digital authentication is successful. An accumulation permission signal for permitting accumulation of information is output.

  The information storage means 3G stores the shared collation list, provided information, programs, etc. in various areas.

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

  In addition, the data in the shared collation list is digitally authenticated to ensure that the collation list is a legitimate list (guarantee that it has not been tampered with, guarantee of origin). The digital signature information and the private key of the provided information management device S1 are stored in association with each other.

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

Also, the provision information received from other devices is accumulated in the provision information area, and in this embodiment, the search target information (key information) is based on each provision information identifier (hash value). The file name, file size, update time, connection destination information (IP address, port number) of provision information are stored, and the provision information (the contents of the file itself) is stored. Further, the search target information and the provided information are associated with the provider identifier of the providing information person who is the transmission source.
<Fourth embodiment>
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 provider identification information permitted to provide information in the information sharing network. It is configured to limit the information providers that can be managed and manage the provided information.

  The provided information management system shown in the second embodiment must not flow in the information sharing network (prohibit distribution), such as provided information identification information, provider identification information of the information provider sending the provided information, etc. When the identification information is managed as a collation list and matches the identification information included in the collation list, the information receiver side device S3 ignores the provision information associated with the identification information without receiving it. The provision information stored in the information storage means 3G is deleted.

  The provided information management system shown in the third embodiment causes a collation list for automatic download to flow in the information sharing network, and identifies information included in the collation list with respect to the information receiver side device S3 in the information sharing network. It has a configuration that automatically (passively) downloads the matching provided information.

  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.

  In this system, (1) a shared collation list for information providers only, (2) a common collation list for automatic deletion, and (3) a common collation list for automatic download are used together as a common collation list.

  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.

  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 collation list for information providers only, automatic A shared collation list for deletion and a common collation list for automatic download are received (step S402).

  Then, it is determined whether or not the shared collation list is a regular list using the collation information determination unit included in the common collation list receiving unit 3A (step S403). Specifically, the shared collation list is compounded using the public key of the provided information management apparatus that has been received in advance, and the digital collation list is added via a digital authentication server (not shown) using a digital signature added to the common collation list. Digital authentication is performed on the shared verification list, and it is determined whether the shared verification list is a legitimate shared verification list (determination that it has not been tampered with, determination of legitimacy of origin, etc.).

  If the authentication is accepted (step S403: Y), if it is a shared collation list received for the first time, the regular common collation list is accumulated in the information accumulating means 3G. If the shared collation list is included, the shared collation list is read from the information storage unit 3G (step S404), and the already-shared collation list and the change information regarding the common collation list determined to be legitimate If the change information has new identification information, for example, the data change such as adding the identification information to the shared collation list is performed.

  Note that a shared collation list for which authentication has not been approved (not a regular shared collation list) is discarded (step S405), and a new shared collation list is received again.

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

  Specifically, the information is first connected to the information sharing network, and the provided information having the identification information in the shared collation list for automatic download is searched using the P2P file sharing software by a program installed in advance.

  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) to be automatically downloaded to other adjacent devices is used as a search key. Search request data to be sent. If the device does not have a search key, the search destination device repeatedly requests (transmits) the search request data to the adjacent device. Then, some time, 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 matching the search key. The search ends when

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

  Thereafter, the information receiver side device S3 directly connects to the device having the provision information based on the connection destination information included in the search target information by the P2P method in order to download the provision information found by the search. The provision information request signal is transmitted.

  When the provision information is received from the device having the provision information, it is collated whether or not the provision information matches the provision information held in the automatic deletion shared collation list.

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

  Also, the 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 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). .

  Next, when it does not match the automatic collation shared collation list, it collates with the shared collation list for providing information person limitation (step S412).

  Specifically, digest information is created from the provided information and the provider identifier using the collating means. Next, a public key associated with the provider identifier is searched from the shared collation list, and digital information of the provided information is obtained using an authentication unit (not shown) of the provided information management device S1 using the public key. When the authentication is successful and the digital authentication is successful, the provided information is output using the output means of the information receiver side device S3, such as playing music using the output means or displaying video. Further, the provision information is stored in the provision information area (step S414).

  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 the provided information is deleted (step S415).

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

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

  For example, although different collation lists have been described in the first to fourth embodiments, a system that combines all functions or a system that combines arbitrary functions may be considered.

  Further, the information provider side device and the information receiver side device may also function as the provided information management 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 the identification information as the identification information added by the identification information adding means. This makes it easier to manage each provided information.

Further, in the present embodiment, as the identification information, the provision identifier of the provision information person or the provision information identifier is used. However, the identification information such as the content name or the identification information for identifying the information having a certain relationship is used. It is also possible to use. Each embodiment mainly explains one piece of identification information such as provider identification information (for example, in the first embodiment, the shared collation list having the provision information person identification information in order to limit the provision information person Of course, other identification information may be used in each embodiment. (For example, in the first embodiment, etc., a shared collation list having provided information identification information is used for managing each provided information)
In addition, the identification information of the provided information used for 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. .

  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. It is also possible.

  Furthermore, in the present embodiment, the collation list is used as the collation information. However, for example, a case where the collation information is a part of the collation information such as information obtained by changing the collation information without using the list is included.

  In addition, in the present embodiment, the shared collation list, which is collation information, is acquired when connected to the provision information management device S1 and logged in. However, as with the provision information, version information is added. The shared collation list 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.

  In this case, the information receiver side device S3 compares the shared collation list owned by itself with the received common collation list based on the version information added to the common collation list.

  When the received shared collation list has new version information, as described above, the common collation list is registered using the collation information determination unit of the common collation list receiving unit 3A. It is determined whether it is a list. Specifically, the shared collation list is compounded using the public key of the provided information management apparatus that has been received in advance, and the digital collation list is added via a digital authentication server (not shown) using a digital signature added to the common collation list. Digital authentication is performed on the shared verification list, and it is determined whether the shared verification list is a legitimate shared verification list (determination that it has not been tampered with, determination of legitimacy of origin, etc.). Then, the authorized shared collation list for which authentication has been approved is stored in the information storage means 3G. It should be noted that the shared collation list for which authentication is not permitted (not the regular shared collation list) is discarded, and the shared collation list that the user has so far is stored as it is.

  Furthermore, the above-described two types of shared collation list acceptance methods, that is, a method in which the information receiver side device S3 receives the common collation list from the provided information management device S1 at the time of login, and the information sharing network are spread. It is also conceivable to use a method for receiving a shared collation list in the same manner as provided information.

  In this case, for example, priority information such as preferentially receiving the shared collation list received from the provided information management device S1 and rewriting the existing shared collation list may be programmed.

  In addition, as a list that can be set in the information receiver side device S3, a list having identification information of provision information to be automatically downloaded and a list having identification information of provision information to be automatically deleted even when received are stored. You can keep it. 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 collated with the list, and download or deletion is performed according to the list.

Overall configuration diagram in one embodiment of the present invention Functional block diagram in the same embodiment Screen view of information receiver side device S3 in the same embodiment Screen view of information receiver side device S3 in the same embodiment Operation flowchart of provided information management apparatus S1 in the embodiment The operation | movement flowchart of information provider side apparatus S2 in the embodiment. The operation | movement flowchart of information receiver side apparatus S3 in the embodiment. The operation | movement flowchart of provided information management apparatus S1 in the embodiment. The operation | movement flowchart of information receiver side apparatus S3 in 4th embodiment.

Explanation of symbols

S1 ... Provided information management device S2 ... Information provider side device S3 ... Information receiver side device 1B ... Provider identification information management means (identification information management means)
1F: Collation information creation means (shared collation list creation means)
1G ... collation information output means (shared collation list transmission means)
1H: Deletion instruction means 1I: Provided information storage means (information storage means)
2A ... Provider identification information adding means (identification information adding means)
2H: provided information transmitting means 3A: collation information accepting means (shared collation list accepting means)
3B: Connection destination search means (provided information search means)
3D: Provider identification information accepting means 3E: Provided information accepting means 3F: Collating means (provided information collating means)
3G ... Provided information storage means (information storage means)
3I: Provided information transmission means

Claims (10)

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 search means for searching connection destination information of the device having the provided information The information sharing network is used to establish a connection with the device having the provision information based on the connection destination information, and the provision information is directly received and the received provision information is provided in the information sharing network. A provision information management system comprising an information receiver side device that enables 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;
Providing information transmitting means for transmitting the providing information provided by the user in association with the identification information;
The provided information management device
Collation information creating means for creating collation information for managing the provided information based on the identification information;
Comprising 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;
Providing information receiving means for receiving providing information associated with the identification information;
Verification information receiving means for receiving verification information including information on the identification information;
Verification information determination means for determining whether the verification information received by the verification information reception means is regular verification information;
Based on the collation information determined by the collation information determination unit as the regular collation information, the collation information is collated with the identification information received by the identification information receiving unit, and the collation information Collating means for outputting a control signal for controlling the provided information received by the provided information receiving means according to the content of the information;
Provision information accumulating means for accumulating provision information permitted to be accumulated by the collating means and identification information associated with the provision information;
Characterized in that it has provision information transmitting 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. Provide information management system. The information provider side device is:
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;
Collation information creating means for creating collation information including provider identification information permitted to provide information based on the provider identification information management means;
Comprising collation information output means for outputting the collation information created by the collation information creation means,
The information receiver side device is:
Provider identification information receiving means for receiving the provider identification information associated with the provision information;
Provision information receiving means for receiving provision information associated with the provider identification information for identifying the information provider;
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 provision information received by the provision information receiving means is permitted to provide information. The information provided by the information provider, and if the information provided by the information provider allowed to provide the information, a verification that outputs a storage permission signal to permit the storage of the provided information Means,
Provision information accumulating means for accumulating provision information permitted to be accumulated by the collating means and provider identification information associated with the provision information;
Characterized in that it has provision information transmitting 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.   The provision information according to claim 1 or 2, wherein 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. Management system.   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. The collation information creation means creates collation information including provision information prohibiting distribution in the information sharing network and identification information relating to provision information to be deleted,
Based on the collation information determined by the provided information collating 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 accepting means, and the collation information If it matches the identification information included in the information, a control signal indicating that the provision information associated with the identification information is not received is output, or the provision information associated with the identification information is output from the information storage means. 5. The provided information management system according to claim 1, wherein a control signal indicating deletion is output. 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 search means for searching connection destination information of the device having the provided information The information sharing network is used to establish a connection with the device having the provision information based on the connection destination information, and the provision information is directly received and the received provision information is provided in the information sharing network. In a program for functioning a computer used in a provision information management system having an information receiver side device that enables and a provision information management device that manages the provision information,
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;
The provision information provided by itself is caused to function as provision information transmission means for transmitting in association with the identification information,
The provided information management device;
Collation information creating means for creating collation information for managing the provided information based on the identification information;
Function as collation information output means for outputting the collation information created by the collation information creation means,
The information receiver side device;
Identification information receiving means for receiving the identification information associated with the provision information;
Providing information receiving means for receiving providing information associated with the identification information;
Verification information receiving means for receiving verification information including information on the identification information;
Verification information determination means for determining whether the verification information received by the verification information reception means is regular verification information;
Based on the collation information determined by the collation information determination unit as the regular collation information, the collation information is collated with the identification information received by the identification information receiving unit, and the collation information Collating means for outputting a control signal for controlling the provided information received by the provided information receiving means according to the content of the information;
Provision information accumulating means for accumulating provision information permitted to be accumulated by the collating means and identification information associated with the provision information;
A provision information management program for causing provision information accumulated in the provision information accumulation 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,
Provider identification information adding means for adding provider identification information for identifying the information provider to the provided information provided by the self;
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;
A provider identification information management means for managing provider identification information of an information provider permitted to provide information;
Collation information creating means for creating collation information including provider identification information permitted to provide information based on the provider identification information management means;
Function as collation information output means for outputting the collation information created by the collation information creation means,
The information receiver side device;
Provider identification information receiving means for receiving the provider identification information associated with the provision information;
Provision information receiving means for receiving provision information associated with the provider identification information for identifying the information provider;
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 provision information received by the provision information receiving means is permitted to provide information. The information provided by the information provider, and if the information provided by the information provider allowed to provide the information, a verification that outputs a storage permission signal to permit the storage of the provided information Means,
Provision information accumulating means for accumulating provision information permitted to be accumulated by the collating means and provider identification information associated with the provision information;
The function according to claim 6, wherein the provision information stored in the provision information storage means is made to function as provision information transmission means for transmitting upon receipt of a provision information request signal transmitted from another information supplier-side device. Provided information management program. In a program for causing a computer to function, the provided information management device includes:
8. The provided information management program according to claim 6, wherein the provided information management program functions as a deletion instruction means for transmitting an instruction to delete the provided information stored in the information receiver side device based on the identification information. In a program for causing a computer to function, the provided information management device includes:
9. The provision information management program according to claim 6, wherein the provision information management program causes a provision information storage unit to store provision information transmitted from the provider side device. In a program for causing a computer to function,
The provided information management device;
Providing information that prohibits distribution in the information sharing network and collation information means for creating collation information including identification information related to provision information to be deleted;
The information receiver side device;
Based on the collation information determined 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, and the identification information included in the collation information Is output, a control signal indicating that the provision information associated with the identification information is not received or a control signal indicating that the provision information associated with the identification information is deleted from the information storage unit is output. 10. The provision information management program according to claim 6, wherein the provision information management program is made to function as provision information collating means for outputting.

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