wpa_supplicant: authentication timeout problem
j at w1.fi
Wed Jun 20 23:19:14 EDT 2007
On Thu, Jun 21, 2007 at 12:08:26AM +0200, Thomas Schulz wrote:
> How do you plan to achive roam within some milliseconds?
> According to my experiences a full EAP-TTLS-PAP authentication takes
> 180..250 milliseconds, a reauthentication with only 4WAY_HANDSHAKE for
> keys takes 70..100 milliseconds.
Couple of milliseconds is going to be very hard to reach.. Though, these
numbers at least for 4-way handshake are quite large. If there is enough
CPU power (e.g., any modern laptop) and both the client and AP has a
good implementation, 4-way handshake should be possible to implement
within couple of milliseconds or well, lets say in less than 10 ms.
Full EAP-TTLS will take considerably more time especially if the server
certificate is large. Though, this could be improved a lot by using TLS
session resumption if the same authentication server is used.
Jouni Malinen PGP id EFC895FA
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