Wishlist Request: 802.11 GTK Decryption

[Anthony Murabito <anthony.murabito () gmail com>]

Hi Devs,

I was advised via the wiki to send my request here.

Anyhow, here goes:

Wireshark's current stable release (1.4.1 at this time) does not have 
the ability to decrypt broadcast/multicast 802.11 frames encrypted with 
the Group Transient Key (GTK). I'd love to see this feature added. The 
GTK is distributed in Message 3 of the EAPoL 4-Way Handshake for WPAv2 
style authentication, and is a separate 2-Way Handshake in WPAv1 style 
authentication. For the record, PTK (unicast) decryption works great.

If this feature is currently available in a development branch feel free 
to tell me I am silly, and please point me in the right direction.

Best Regards,

Anthony

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