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hostapd: fallback to psk when generating r0kh/r1kh

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The 80211r r0kh and r1kh defaults are generated from the md5sum of
"$mobility_domain/$auth_secret".  auth_secret is only set when using EAP
authentication, but the default key is used for SAE/PSK as well.  In
this case,  auth_secret is empty, and the default value of the key can
be computed from the SSID alone.

Fallback to using $key when auth_secret is empty.  While at it, rename
the variable holding the generated key from 'key' to 'ft_key', to avoid
clobbering the PSK.

Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
[make ft_key local]
Signed-off-by: David Bauer <mail@david-bauer.net>
This commit is contained in:
Eneas U de Queiroz 2022-01-07 17:19:36 -03:00 committed by David Bauer
parent 6f78723977
commit e6df13d0e1
1 changed files with 4 additions and 4 deletions
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8
package/network/services/hostapd/files/hostapd.sh
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@ -526,7 +526,7 @@ hostapd_set_bss_options() {
wireless_vif_parse_encryption
local bss_conf bss_md5sum
local bss_conf bss_md5sum ft_key
local wep_rekey wpa_group_rekey wpa_pair_rekey wpa_master_rekey wpa_key_mgmt
json_get_vars \
@ -876,10 +876,10 @@ hostapd_set_bss_options() {
set_default pmk_r1_push 0
[ -n "$r0kh" -a -n "$r1kh" ] || {
key=`echo -n "$mobility_domain/$auth_secret" | md5sum | awk '{print $1}'`
ft_key=`echo -n "$mobility_domain/${auth_secret:-${key}}" | md5sum | awk '{print $1}'`
set_default r0kh "ff:ff:ff:ff:ff:ff,*,$key"
set_default r1kh "00:00:00:00:00:00,00:00:00:00:00:00,$key"
set_default r0kh "ff:ff:ff:ff:ff:ff,*,$ft_key"
set_default r1kh "00:00:00:00:00:00,00:00:00:00:00:00,$ft_key"
}
[ -n "$r1_key_holder" ] && append bss_conf "r1_key_holder=$r1_key_holder" "$N"