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P2P: Allow per-device PSK to be assigned

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"wpa_cli p2p_set per_sta_psk <0/1>" can now be used to disable/enable
use of per-device PSKs in P2P groups. This is disabled by default.
When enabled, a default passphrase is still generated by the GO for
legacy stations, but all P2P and non-P2P devices using WPS will get
a unique PSK.

This gives more protection for the P2P group by preventing clients from
being able to derive the unicast keys used by other clients. This is
also a step towards allowing specific clients to be removed from a group
reliably without having to tear down the full group to do so.

Signed-hostap: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2013-09-01 10:08:30 +03:00
parent 698e921b9e
commit 05766ed8de
8 changed files with 26 additions and 4 deletions
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1
src/ap/wps_hostapd.c
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@ -1145,6 +1145,7 @@ int hostapd_init_wps(struct hostapd_data *hapd,
cfg.dualband = 1;
if (cfg.dualband)
wpa_printf(MSG_DEBUG, "WPS: Dualband AP");
cfg.force_per_enrollee_psk = conf->force_per_enrollee_psk;
wps->registrar = wps_registrar_init(wps, &cfg);
if (wps->registrar == NULL) {