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Revision as of 06:54, 29 July 2019 by Jflopezfernandez (talk | contribs) (Added some background information on RC4)

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The RC4 algorithm is a stream cipher developed by Ron Rivest in 1987. RC4 was a trade secret famously leaked in 1994 to the cypherpunks mailing list. A little over a year after RC4 was leaked, Andrew Roos posted a paper to the sci.crypt newsgroup claiming he discovered a weakness in RC4's keystream generation. Specifically, Roo claimed to have found evidence to suggest the concatenated initialization vectors used by the stream cipher were a significant vulnerability. Roo was proven right years later, with the infamous failure of the new (at the time) WEP standard.