KR101475516B1 - Method for sharing file based on torrent protocol and apparatus using the same - Google Patents

Abstract

A method for sharing a file based on a torrent protocol, the matching server receiving a request for seeder and peer information related to a torrent file from a peer, Searching for matching information and transmitting the matching information to a tracker server, the tracker server transmitting seeder and peer information related to seed matching information to the peer, and the peer downloading the file using seeder and peer information associated with the seed matching information A file sharing method based on a torrent protocol.
According to the present invention, by providing the peer with seed matching information having different hash values including the same original file using the matching server, for example, even if there is no seed in the same hash value, Can be searched and transmitted, thereby improving the download speed and increasing the probability of success, thereby increasing the efficiency of file sharing.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a file sharing method based on a torrent protocol, and a file sharing apparatus using the method. [0002]

[0001] The present invention relates to a file sharing method based on a torrent protocol and a file sharing apparatus using the method. More particularly, the present invention relates to a file sharing apparatus using a torrent protocol based seed file, To a file sharing method based on a torrent protocol that can efficiently share a file by improving download speed when sharing a file by sharing information, and a file sharing apparatus using the method.

Along with the development of Internet-based information and communication technologies, the exchange of information through computers has increased enormously and it has become possible to transmit large-sized files in transmission of text or small capacity images. In other words, with the spread of high-speed internet and computers, P2P or web hard that can share large files such as music, movie, drama has appeared.

BitTorrent is a P2P file transfer protocol of the file sharing method, and the bittorrent is collectively referred to as application software using a P2P file transfer protocol. BitTorrent allows users to download multiple file fragments simultaneously from multiple locations over a network through multiple connections stored on the Internet, resulting in a greatly improved download speed.

BitTorrent is originally distributed under open source copyright by using distributed hash tables, and various clients such as μTorrent compatible are being made and widely used. This bittorrent consists of a client and a tracker. The service is started by sharing the .torrent file (seed file) generated by the client to a web page, a web hard, and the like. In other words, a person who has a file to share with will create a .torrent file through a BitTorrent client installed on his computer, share it, and become a Seeder. By downloading the .torrent file, This single file can be downloaded from multiple computers.

1 is a schematic diagram for explaining a method of sharing a conventional torrent file.

1, the torrent file A_hash A 10, the torrent file B_hash B 20 and the torrent file C_hash C 30 contain the same original files a and b, but each hash value hash A , hash B, and hash C). Particularly, even if the torrent file B_hash B 20 and the torrent file C_hash C 30 have completely the same original files a and b, another torrent file having a hash value different according to the size of the fragment file is generated They can not download or upload to each other.

Therefore, even if the hash values of the torrent files generated by using the torrent protocol are different according to the group type, the size of the fragmented file, etc., the same original files are matched to provide seed matching information to the peers, thereby improving the speed of downloading and increasing the probability of success There is a need for a new file sharing method and apparatus that can improve the efficiency of file sharing.

It is an object of the present invention to solve the above-mentioned problems, and it is an object of the present invention to provide an apparatus and method for sharing file sharing information by sharing seed matching information generated by matching torrent file (seed) A file sharing method based on a torrent protocol that can efficiently share a file through improved speed of downloading, and a file sharing device using the method.

It is still another object of the present invention to provide a file sharing method based on a torrent protocol that can easily prevent copyright sharing files from being shared in a file sharing environment based on a torrent protocol using the generated seed matching information, Device.

According to an aspect of the present invention, there is provided a file sharing method based on a torrent protocol, wherein a matching server receives a seeder and peer information associated with a torrent file from a peer, Retrieving seed matching information related to a torrent file having a value and transmitting the seed matching information to a tracker server, the tracker server transmitting cedar and peer information related to seed matching information to a peer, and the peer associating seeder and peer information And downloading the file using the downloaded file.

According to one aspect of the present invention, the seed matching information includes extracting a unique value for a source file downloaded using each torrent file, comparing the unique values with each other, And matching and storing the torrent file having different hash values related to the hash value.

According to an aspect of an embodiment of the present invention, when there is a request to delete a copyright violation file from a peer, the matching server uses the unique value to create a torrent file having the same hash value associated with the copyright violation file, Transmitting the seed matching information for the torrent file having the value to the tracker server, and the tracker server deleting the information about the seeder and the peer using the seed matching information related to the received copyright violation file.

According to another aspect of the present invention, there is provided a file sharing apparatus based on a torrent protocol, comprising: a peer that operates a client for sharing a file; and a seed matching information receiving unit that receives seed matching information received from the matching server, A seeder with the same source file and a tracker server that sends the peer information to the peer and a seeder and peer information request associated with the torrent file from the peer or tracker server, And a matching server for providing seed matching information for a torrent file having a hash value.

According to another aspect of the present invention, the matching server includes a torrent file information storage unit for downloading a torrent file from a torrent site and storing a hash value for the torrent file, A unique value information generation unit for extracting a unique value for an original file after downloading the original value information, and comparing the unique value information to generate seed matching information for a seed file having different hash values having the same original file A matching information generating unit 130 for generating seed matching information, and a matching information storing unit for storing the seed matching information.

According to the present invention, seed matching information having different hash values including the same original file is provided to the peer using the matching server, for example, even if there is no seed in the same hash value, the seed matching information is used It is possible to find and transfer seeds with different hash values, thereby improving the download speed and increasing the probability of success, thereby enhancing the efficiency of file sharing.

In addition, if the distribution of copyright violation files is requested, the seed file related to the copyright violation file can be easily searched and deleted in the file sharing environment based on the torrent protocol using the seed matching information for the original file (copyright violation file) The illegal distribution of copyright infringement files can be dramatically shortened.

1 is a schematic diagram for explaining a method of sharing a conventional torrent file.
FIG. 2 is a block diagram illustrating a method for sharing a torrent file according to an embodiment of the present invention. Referring to FIG.
3 is a block diagram illustrating a matching server according to an embodiment of the present invention.
4 is a flowchart illustrating a process of generating seed matching information according to an embodiment of the present invention.
5 and 6 are flowcharts for explaining a file sharing method based on a torrent protocol using a matching server according to an embodiment of the present invention.
7 is a flowchart illustrating a method of protecting a copyright file based on a torrent protocol using a matching server according to an embodiment of the present invention.
FIG. 8 is a block diagram illustrating a method for sharing a torrent protocol-based file using a matching server in a web hard vendor according to an embodiment of the present invention. Referring to FIG.

The following detailed description is merely illustrative, and is merely an example of the present invention. Further, the principles and concepts of the present invention are provided for the purpose of being most useful and readily explaining.

Accordingly, it is not intended to provide a more detailed structure than is necessary for a basic understanding of the present invention, but it should be understood by those skilled in the art that various forms that can be practiced in the present invention are illustrated in the drawings.

The definitions of terms used in the present invention are as follows.

To use the bittorrent protocol, a bittorrent client compatible with the bittorrent protocol must be installed. To share a file (one group or a group of files) using a bittorrent, a .torrent (seed) file must be created. The .torrent file has metadata about the files to be shared and the tracker (computer to coordinate the distribution of files). To receive a file, the peer must first obtain a .torrent file for that file, In order to receive a piece of scrap, you need to connect to a specific tracker server that tells you which peers you should connect to.

A client is a software that uploads or downloads a file. It is a program that displays a .torrent file created according to the torrent protocol, searches the .torrent file for the content that the user wants, and allows the user to use the information in the .torrent file. . It also provides the ability to create .torrent files, and various types such as μtorrent are distributed.

The peer accesses the shared file with the computer installed with the client, and the peers downloading the fragment file as all users sharing the fragment file receive the fragment file at random and receive the fragment received between the different peers It is possible to reduce the transmission load of the seeder (distributor) having the original file to be shared and shared.

The .torrent file (seed file) is a file for storing the information about the file (original file) to be shared and searching for the location of the original file according to the information, and metadata, host information, An 'announce' section including URL information of the tracker, a SHA-1 hash code of each fragment for diagnosing the file name, length, length of the file fragment, and file integrity. The .torrent file (seed file) does not contain any content, only the title of the content, how the size is divided, how the divided files can be reassembled again, and the hash value of whether the reassembled file matches the original . The client receiving the file can act as a seeder to increase the efficiency of file sharing. The following torrent file (.torrent file) and seed file can be used interchangeably.

Tracker is a kind of server that monitors seeder and peer through SWARM which is information of the person who is currently downloading and the person who is uploading. The client sends its information to the tracker server and receives information about the current cedar and peer in SWARM. The tracker server has no direct effect on the data transfer, but does not have a copy of the original file shared, and the current bittorrent can be implemented without a tracker server. The announcer server performs the same function as the tracker server, and can be classified as an independent announcer server, a backup announcer server, and an open announcer server depending on the connection type of the network, the type of file management, and the disclosure status.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a block diagram illustrating a method for sharing a torrent file according to an embodiment of the present invention. Referring to FIG.

2, the file sharing apparatus 1000 based on the torrent protocol of the present invention includes a peer 300 on which a client for sharing a file operates, a seeder for a seed file input from a peer, peer information to a peer or a seeder having peers having different hash values by using seed matching information received from a matching server or having the same original file and transmitting the peer information to a peer And a matching server 100 that generates seed matching information having different hash values including the same original file.

In order to download a certain shared file, the peer 300 first acquires and executes a seed file (.torrent file) for the shared file from a torrent site (web site) that shares the seed file on the web and shares it. The client continuously installed on the peer 300 accesses the tracker server using the shared file information stored in the executed seed file and the metadata about the tracker server, And receives seeder and peer information from the tracker server as to whether to connect to the network. Here, the seeder and the peer information are information about the peer downloading the current shared file and the uploading peer.

The peer 300 downloads the fragment file for the shared file using the cedar and the peer information received from the tracker server, and at the same time uploads the fragment file that the peer 300 owns so that a plurality of peers download the fragment file, The number increases. By sharing the pieces of the shared files among the plurality of peers, the transmission load of the seeder having the original file can be reduced.

The tracker server may be a computer that coordinates file distribution, and performs a function of connecting a plurality of peers sharing a file. In principle, the tracker server has a unique hash value (hash code) for each seed file, so that peers accessing the seed file having the same hash value can be connected.

Here, the matching server 100 of the file sharing apparatus 1000 of the present invention extracts eigenvalues for a source file with respect to a plurality of seed files having different hash values including the same source file, And generates seed matching information by matching the seed files.

The matching server 100 transmits the seed matching information to the tracker server so that the tracker server transmits information about the seeder and the peer having different hash values to the seed file requested from the client and having the same original file, Can improve the speed of downloading and improve the efficiency of file sharing by improving the probability of successful download

Hereinafter, a matching server 100 capable of generating seed matching information and transmitting it to a tracker server to improve the efficiency of file sharing will be described in detail with reference to FIG. 3 and FIG.

FIG. 3 is a block diagram illustrating a matching server according to an embodiment of the present invention, and FIG. 4 is a flowchart illustrating a process of generating seed matching information according to an embodiment of the present invention.

Referring to FIG. 3, the matching server 100 includes a torrent file information storage 110 for downloading a torrent file (seed) from a torrent site (web site) and storing a hash value for the torrent file, (120) for extracting a unique value for an original file after downloading a shared file (original file) by using the unique value information, and for comparing the unique value information with different hash values having the same original file A matching information generating unit 130 for generating seed matching information for the seed file, and a matching information storing unit 140 for storing the seed matching information.

Referring to FIG. 4, the matching server 100 first acquires a plurality of seed files 10, 20 and 30 from a torrent site distributed on the web, and downloads the original files included in each seed file. That is, the matching server 100 transmits the source files a, b, and c included in the first seed file 10, the source files a and b included in the second seed file 20, And downloads the original files (a, b) included in the file 30. [ Herein, the seed files can be downloaded first in a focused manner.

Next, the matching server 100 extracts eigenvalues for the original files a, b, and c downloaded through the respective seed files 10, 20, and 30 (s41). Here, the eigenvalues can be extracted using a specific function that can extract the same specific value for the same original file. For example, the eigenvalues can be extracted for the entire file or for a specific part of the file (first, middle, end, Can be a hash value extracted using a hash function. The eigenvalue may be a specific value created by extracting a video image of a moving image or a specific value created by extracting a specific region of a voice signal.

In operation S42, the matching server 100 compares the extracted eigenvalues with each other to determine seed files having different hash values including original files having the same eigenvalues. Subsequently, the matching server 100 groups seed files 10, 20, and 30 having different hash values for the original files a and b, and generates and stores seed matching information (S43). That is, in one application example, when there is a request for information on a seeder and a peer for a seed file having a hash value A from a tracker server or a peer, the matching server 100 searches the stored seed matching information for hash By transmitting the seeder and peer information for the second seed file 20 and the third seed file 30 having the hash value B different from the hash value A as well as the first seed file 10 having the value A, It is possible to provide an efficient shared environment for downloading or uploading to a plurality of other peers (here, peers connected to the hash values B and C) as well as peers connected to the hash value A.

As another example, if there is a request for information on the seeder and the peer of the original file a from the peer, the matching server 100 searches the seed files 10, 20, 30 to the peer, thereby providing an efficient shared environment in which downloading or uploading can be performed.

FIG. 5 and FIG. 6 are flowcharts for explaining a file sharing method based on a torrent protocol using a matching server according to an embodiment of the present invention. FIG. 5 illustrates a file sharing method after executing a torrent file at a peer, FIG. 6 illustrates a method of sharing a file when a peer requests a torrent file information for a specific file.

5, in the file sharing method based on the torrent protocol, the peer 300 first executes the torrent file (K.torrent) (S51) so that the client transmits the seeder and peer information (K.torrent) related to the torrent file (S52-1) directly to the matching server 100 or may request the matching server 100 via the tracker server 200 (S52-2, S53).

Next, the matching server 100 searches the seed matching information stored in the matching information storage unit and obtains seed file (K.torrent) information having the same hash value as the requested torrent file (K.torrent) The seed matching information including seed file information having a plurality of different hash values matched with K.torrent is transmitted to the tracker server 200 (S55).

The tracker server 200 having received the seed matching information transmits the seeder and the peer information in the SWARM according to the seed matching information to the peer (S56), so that the peer 300 transmits the seed matching information to the plurality of seeders and peers As well as share files from multiple seeders and peers with different hash values.

6, when the peer 300 requests a torrent file information in a specific file (eigenvalue) (S61), the matching server 100 searches for matching information stored in the matching information storage unit (Including seeder and peer information associated with the seed file) including seed file information having the same or different hash value having the same eigenvalue as the specific file (eigenvalue) requested, The peer 300 can use the seed matching information to share a file from a plurality of seeders and peers having the same hash value as well as from a plurality of seeders and peers having different hash values.

7 is a flowchart illustrating a method of protecting a copyright file based on a torrent protocol using a matching server according to an embodiment of the present invention.

As shown in FIG. 7, in a method of protecting a copyright file on the basis of a torrent protocol, when there is a request for deletion of a copyright violation file (torrent file or original file) via the network to the matching server 100 (S71) The server 100 searches the seed matching information stored in the matching information storage unit (S73) and finds the seed matching information for the seed file having the same hash value associated with the copyright violation file (torrent file) and the seed file having the different hash value To the tracker server 200 (S74). Meanwhile, the matching server deletes and updates the seed file related to the copyright violation file and can continuously manage the seed file.

Continuously, the tracker server 200 deletes the information on the seeder and the peer using the seed matching information related to the received copyright violation file (torrent file), so that the copyright violation file can no longer be shared based on the torrent protocol.

In other words, the torrent file based on the torrent protocol has only the location information of the original file, not the original file, so that the copyright of the original file can not be grasped. Therefore, in order to determine whether the torrent file has a copyright violation file, the matching server 100 checks the eigenvalue of the original file of the torrent file using the seed matching information, It is possible to know the copyright violation torrent file information having the same hash value or another hash value having the location information on the file, so that the copyright violation torrent file information is transmitted to the tracker server 200, Sharing of breach files can be easily and fundamentally blocked. Also, since all the torrent file information about the original file can be managed, it is possible to charge the corresponding copyright file. The matching server of the present invention can also be used to block sharing of pornography files in the same way as a copyright infringement file.

FIG. 8 is a block diagram illustrating a method for sharing a torrent protocol-based file using a matching server in a web hard vendor according to an embodiment of the present invention. Referring to FIG.

As shown in FIG. 8, the web hard vendor can utilize an efficient file sharing system having a fast download speed and a high file success probability based on a torrent protocol using the matching server 100 that provides the seed matching information of the present invention .

In other words, the web hardware company can manage the stable peer list by using the independent announcer server and the backup server supplementing the announcer server separately, and download the desired file by using the public announcer server without much cost.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, I will understand.

Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by equivalents to the appended claims, as well as the appended claims.

50: network network 100: matching server
110: Torrent file information storage unit 120: Original value information generating unit
130: matching information generating unit 140: matching information storing unit
200: Tracker server 210: Independent announcer server
220: backup announcer server 230: public announcer server
300: Peer 310: Download Peer
1000: File Sharing Device

Claims (5)

In a file sharing method based on a torrent protocol,
The matching server receives the cedar and peer information associated with the torrent file from the peer,
The matching server retrieves seed matching information related to a torrent file having a different hash value with respect to the same original file, and transmits the seed matching information to the tracker server.
The tracker server sending seeder and peer information associated with the seed matching information to the peer;
Wherein the peer includes a step of downloading a file using seeder and peer information associated with the seed matching information.
The method according to claim 1,
The seed matching information includes
Extracting a unique value for a downloaded original file using each torrent file, and
And comparing the eigenvalues with each other to match and store torrent files having different hash values related to the original file having the same eigenvalue.
3. The method of claim 2,
If there is a removal request from the peer for a copyright violation file,
The matching server transmitting the seed matching information for the torrent file having the same hash value and the torrent file having the different hash value associated with the copyright violation file to the tracker server using the eigenvalue,
And wherein the tracker server deletes information about the seeder and the peer using the seed matching information associated with the received copyright violation file.
A file sharing apparatus based on a torrent protocol,
The peer on which the client for file sharing operates,
A tracker server having different hash values using the seed matching information received from the matching server, a seeder having the same original file and transmitting the peer information to the peer,
And a matching server for providing seed matching information for a torrent file having a different hash value for the same source file when there is a seeder and a peer information request related to the torrent file from the peer or the tracker server, Device.
5. The method of claim 4,
The matching server
A torrent file information storage unit for downloading a torrent file from the torrent site and storing a hash value for the torrent file,
An eigenvalue information generator for downloading a shared file (original file) using the torrent file and extracting a eigenvalue for the original file;
A matching information generator 130 for generating seed matching information for a seed file having different hash values having the same original file by comparing the unique value information with each other,
And a matching information storage unit for storing the seed matching information.

Images