Editing FastTrack (section)

==Technology==
FastTrack uses [[supernode (networking)|supernode]]s to improve [[scalability]].

To allow downloading from multiple sources, FastTrack employs the [[UUHash]] [[hashing algorithm]]. While UUHash allows very large [[computer file|files]] to be [[checksum]]med in a short time, even on slow weak [[computer]]s, it also allows for massive [[data corruption|corruption]] of a file to go unnoticed. Many people, as well as the [[RIAA]], have exploited this [[Vulnerability (computing)|vulnerability]] to spread corrupt and fake files on the network.<ref>Thomas Mennecke.
[http://www.slyck.com/story1019.html How Overpeer was able to corrupt data on the FastTrack network] {{Webarchive|url=https://web.archive.org/web/20070926232223/http://www.slyck.com/story1019.html |date=2007-09-26 }}.
2005.</ref>

The FastTrack protocol uses [[encryption]] and was not [[documentations|documented]] by its creators. The first clients were all [[Proprietary software|closed source software]]. However, initialization data for the encryption algorithms is sent in the clear and no [[public key]] encryption is used, so [[reverse engineering]] was made comparatively easy. In 2003, [[open source]] [[programmer]]s succeeded in reverse-engineering the portion of the protocol dealing with client-[[Supernode (networking)|supernode]] communication, but the supernode-supernode communication protocol remains largely unknown.{{Citation needed|date=November 2019}}