wpa rekey

matthieu castet castet.matthieu at free.fr
Sun Nov 6 07:08:27 EST 2005


Hi Jouni,

Jouni Malinen wrote:
> 
> If you are talking about pairwise (i.e., per-station unicast key), it is
> always using key index 0. In other words, rekeying changes the key
> itself, but key index remains the same. As far as group
> (broadcast/multicast) keys are concerned, AP may decide to change the
> key index (1 .. 3), but there is no requirement to do so. I would assume
> most implementations to rotate between key index 1 and 2, though.
> 
Thanks, now I understand.
Only the GTK is rekey and it is only used for broadcast/multicast frames
from AP.


Matthieu




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