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Entropy (anonymous data store)

Entropy was a decentralized, peer-to-peer communication network designed to be resistant to censorship, much like Freenet. Entropy was an anonymous data store written in the C programming language. It pooled the contributed bandwidth and storage space of member computers to allow users to anonymously publish or retrieve information of all kinds. The name Entropy was a backronym for "Emerging Network To Reduce Orwellian Potency Yield", referring to George Orwell's novel Nineteen Eighty-Four and its totalitarian thought police enslaving people by controlling their information.

Initial release2003
Stable release
0.9.1-439 / 2005-10-06
Written inC
Operating systemWindows, Unix
Available inEnglish, German
TypeAnonymity, peer-to-peer

Entropy was designed to be compatible with the similar Freenet system. As such, any Freenet client could be configured to run on the Entropy network. However, Entropy and Freenet data stores are not compatible with each other and therefore do not share data.

Entropy featured a news interface, for reading and posting on the latest frost message boards from within the client.


On July 9, 2004, the creator of Entropy announced that he had stopped work on the project[1] amid uncertainty about the security of the included algorithms, namely the McEliece cryptosystem.

McEliece has been proven resistant to attack by Quantum Fourier Sampling as used by Shor's algorithm.[2]

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