Modern & Applied Cryptography Breakers Advanced
Breaking WEP with the FMS Attack on RC4
WEP bolted RC4 onto a 3-byte IV sent in the clear, and that choice was fatal. The Fluhrer-Mantin-Shamir attack recovers the shared key from the first byte of thousands of weak-IV packets. This guide runs the real attack against real RC4 and recovers the key byte by byte.
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