TKIP GroupKey Problem

michael-dev michael-dev
Mon Feb 11 03:56:15 PST 2013


Am 09.02.2013 11:47, schrieb Jouni Malinen:
> On Fri, Feb 08, 2013 at 07:57:53PM +0100, michael-dev wrote:
>> AP Logs: Since my laptop is online, hostapd generates two
>> wpa_driver_nl80211_set_key call every 60s, one with 16bytes key and 
>> one
>> with 32bytes key both assigned to broadcast mac. The short has alg=2,
>> the long has alg=4.
> This sounds strange.. The 16 octet key would most likely be for CCMP,
> not TKIP. However, if I understood your configuration correctly, you
> should not be using CCMP as the group cipher.
> Would it be possible to get a hostapd debug log and configuration file
> showing this kind of behavior?

I'm sry but it looks like this has been caused by accidentially using a 
different config that additionally had peerkey=1, ieee80211w=1, okc=1 
und rsn_preauth set.
But the general problem of not receiving decrypted broadcasts persisted 
(as within the logs sent).

  M. Braun

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