Patent ID: 7882349
Filing Date: 2011-02-01
Classification: H04L,H04W

Abstract:
1. In a wireless access point having at least one link session key for securing management frames transmitted to at least one wireless client, the wireless access point further configured with at least one infrastructure management frame protection (IMFP) key, a method comprising: composing a class two subtype wireless management frame for transmission to one or more wireless clients; composing a class three subtype wireless management frame for transmission to the one or more wireless clients; generating a first message integrity check (MIC) with the at least one link session key corresponding to the one or more wireless clients; appending the first MIC to the class two subtype wireless management frame; appending the first MIC to the class three subtype wireless management frame; generating a second message integrity check (MIC) with the IMFP key; appending the second MIC to the class three subtype wireless management frame; transmitting the class two subtype wireless management frame with only the first MIC appended thereto to the one or more wireless clients; transmitting the class three subtype wireless management frame with the first and second MICs appended thereto to the one or more wireless clients; and transmitting the at least one link session key to the one or more wireless clients to enable the one or more wireless clients to authenticate the class three subtype wireless management frame.