TKIP broadcast

Lin Ma linmaonly
Mon Jan 31 21:23:03 PST 2011

Did you swap the 3rd and 4th parts of the TKIP key in the driver?


From: hostap-bounces at [mailto:hostap-bounces at]
On Behalf Of ronit fichman
Sent: Monday, January 31, 2011 3:27 AM
To: hostap at
Subject: TKIP broadcast




We recently switched from wpa supplicant version 0.6.10 to hostap package
0.8.x, and we have encountered a problem with the group key when using TKIP.

When connecting to any AP, the 4-way handshake is completed successfully,
followed by successful 2-way handshake to exchange to group key. But
Broadcast packets sent from the AP to my STA, get decryption failure, as the
group key set by the wap supplicant is not the group key of the AP.


Have anyone encountered such problem?


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