Editing UUHash (section)

{{Short description|Hash algorithm on the FastTrack network}}
'''UUHash''' is a [[hash function|hash algorithm]] employed by clients on the [[FastTrack]] network. It is employed for its ability to hash very large files in a very short period of time, even on older computers. However, this is achieved by only hashing a fraction of the file. This weakness makes it trivial to create a hash collision, allowing large sections to be completely altered without altering the [[checksum]].

This method is used by [[Kazaa]]. The weakness of UUHash is exploited by anti-[[Peer-to-peer file sharing|p2p]] agencies to [[Data corruption|corrupt]] downloads.<ref>
Thomas Mennecke.
[http://www.slyck.com/story1019.html How Overpeer was able to corrupt data on the FastTrack network].
2005.
</ref>