is the name for a

closed-source Proprietary software is software that is deemed within the free and open-source software to be non-free because its creator, publisher, or other rightsholder or rightsholder partner exercises a legal monopoly afforded by modern copyright and inte ...

P2P P2P may refer to: * Pay to play, where money is exchanged for services * Peer-to-peer, a distributed application architecture in computing or networking ** List of P2P protocols * Phenylacetone, an organic compound commonly known as P2P * Poin ...

application being developed in Japan by ファイル倉庫, a pseudonym translating as 'file warehouse.' ''Share'' was developed to be the successor to

Winny Winny (also known as WinNY) is a Japanese peer-to-peer (P2P) file-sharing program developed by Isamu Kaneko, a research assistant at the University of Tokyo in 2002. Like Freenet, a user must add an encrypted node list in order to connect to oth ...

. Like Winny, ''Share'' functions using a

distributed data store A distributed data store is a computer network where information is stored on more than one node, often in a replicated fashion. It is usually specifically used to refer to either a distributed database where users store information on a ''numb ...

referred to as a

cache Cache, caching, or caché may refer to: Places United States * Cache, Idaho, an unincorporated community * Cache, Illinois, an unincorporated community * Cache, Oklahoma, a city in Comanche County * Cache, Utah, Cache County, Utah * Cache County ...

with each computer acting as a

node In general, a node is a localized swelling (a "knot") or a point of intersection (a vertex). Node may refer to: In mathematics * Vertex (graph theory), a vertex in a mathematical graph *Vertex (geometry), a point where two or more curves, lines ...

in the network. Netagent published a survey in June 2018 suggesting that Share was the third most popular p2p network in Japan after

and Perfect Dark (P2P) with approximately 10,000 nodes connecting each day over Golden Week, down from 30,000 in 2015.

Background

Share's logo refers to the Laughing Man, which is a fictional character from the anime series Ghost in the Shell: Stand Alone Complex, as an anonymous hacker. ''Share'' uses

encryption In cryptography, encryption is the process of encoding information. This process converts the original representation of the information, known as plaintext, into an alternative form known as ciphertext. Ideally, only authorized parties can de ...

to hide the identity of who is transferring or what they are transferring. It is non-centralized so it cannot be easily shut down and it supports multiple source "swarm" downloading. All files are transferred encrypted so they must be decrypted upon download completion. In the meantime they are stored in encrypted form in a "Cache" folder. This folder is also used to allow recently downloaded files to be shared among the network based on priorities. ''Share'' also features a plugin system. The plugins and PDK are readily available through the ''Share'' network. The PDK is written in Delphi. Unlike ''Winny'', ''Share'' allows users to specify up to 255 Cluster Keywords, though only 5 can be active at once (''Winny'' only allowed 3 cluster words, and its system was more confusing). These are used to connect to nodes that have also specified the same Cluster Keywords. This allows users to maintain connections with nodes that are sharing files they might be interested in, while disconnecting from nodes that share content they are not concerned about. Users can specify auto-download triggers and auto-block filters. The network also appears to have some sort of a "forgery warning" system to warn people about possible falsified data/files. Like ''Winny'', ''Share'' uses « Trip IDs » to verify the identity of a person sharing a file. A « Trip ID » is a sort of encrypted key that identifies a person who they say they are. This allows users to decide whether or not they trust a person based on their previous sharing experience with them. When a new version of ''Share'' becomes available, users are given a notice in the ''Share'' statusbar. When this happens, users can search for the new version on the ''Share'' network, and download it from a reliable source based on Trip.

Criticism

''Share'' is highly popular in Japan, but in the West, some concerns have been raised. * In Japan,

high speed Internet Internet access is the ability of individuals and organizations to connect to the Internet using computer terminals, computers, and other devices; and to access services such as email and the World Wide Web. Internet access is sold by Internet ...

is more readily available than in most of Western Europe and North America. For this reason the minimum

upload Uploading refers to ''transmitting'' data from one computer system to another through means of a network. Common methods of uploading include: uploading via web browsers, FTP clients], and computer terminal, terminals ( SCP/ SFTP). Uploadin ...

and download limits are set to 50 kB/s. Also, the cache system can use around 4 GB of free space at any given time to store cached downloads. This might be inconvenient for people with small hard drives. * As a

closed source Proprietary software is software that is deemed within the free and open-source software to be non-free because its creator, publisher, or other rightsholder or rightsholder partner exercises a legal monopoly afforded by modern copyright and inte ...

product, ''Share'' partially relies on security through obscurity. * Like many other P2P applications, ''Share'' downloads files in blocks. However, ''Share'' can only export partially downloaded files in sequential manner. For example, if a file has 100 blocks and block 51 is missing, ''Share'' will not be able to export block 52-100 even if they are already downloaded. Plugin developers have tried to overcome this limitation.

Download

''Share'' can be downloaded from th
Share P2P
an
P2P ファイル共有ソフトノード登録所
websites.

Language localizations

Unlike ''

'', ''Share'' includes an option for

language localisation Language localisation (or language localization) is the process of adapting a product's translation to a specific country or region. It is the second phase of a larger process of product translation and cultural adaptation (for specific countries ...

changes (labeling of buttons, etc.). The locale.txt file contains the information for a particular language and resides in the ''Share'' directory.
An English localization for A82

An English localization for EX2 (TCP version)

An English localization for NT5 (UDP version)

More English localizations for Locate/Hint/Readme/Info

Spanish localization for EX2

Legal issues

On 9 May 2008, three Japanese people aged 21 to 41 were arrested in

Kyoto Kyoto (; Japanese language, Japanese: , ''Kyōto'' ), officially , is the capital city of Kyoto Prefecture in Japan. Located in the Kansai region on the island of Honshu, Kyoto forms a part of the Keihanshin, Keihanshin metropolitan area along wi ...

, Japan for illegally uploading copyrighted files with ''Share''. These were the first ''Share''-related cases in Japan. Nevertheless, a research showed that there was no significant drop of on-line ''Share'' users after these arrests. On 27 November 2008, another male ''Share'' user was arrested in Japan for illegally uploading Japanese TV drama with ''Share''. On 12 February 2009, two male ''Share'' users became the first to be arrested on charges of uploading

Child pornography Child pornography (also called CP, child sexual abuse material, CSAM, child porn, or kiddie porn) is pornography that unlawfully exploits children for sexual stimulation. It may be produced with the direct involvement or sexual assault of a ...

with ''Share''. On 30 September 2009, multiple Japanese media reported that two men were arrested for uploading Nintendo DS game software which include Square Enix's ''

Dragon Quest IX ''Dragon Quest IX: Sentinels of the Starry Skies'' is a role-playing video game co-developed by Level-5 and Square Enix for the Nintendo DS. Published by Square Enix in Japan in 2009, and by Nintendo overseas in 2010, it is the ninth mainline ent ...

''. They are the first users arrested for uploading DS games. On 30 November 2009, 10 Japanese men and 1 woman were arrested for sharing anime, music, movies, and games. Not all were the original uploaders. On 31 March 2010, 62-year-old Seiji Sato was spotted by a new p2p surveillance software for sharing ''

Avatar Avatar (, ; ), is a concept within Hinduism that in Sanskrit literally means "descent". It signifies the material appearance or incarnation of a powerful deity, goddess or spirit on Earth. The relative verb to "alight, to make one's appeara ...

'' and other movies. On 14 January 2011, 18 people were arrested for sharing movies, anime, music, games and software.

Background

Criticism

Download

Language localizations

Legal issues

See also

References

External links