wpa_parse_wpa_ie_rsn: invalid group cipher 0x8 (000fac02)

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My wpa_supplicant failed to connect to a new wifi (again). This time, when started in a debugging mode

/usr/sbin/wpa_supplicant -d -c/etc/wpa_supplicant/wpa_supplicant.conf -iwlan0

this error showed up:

wlan0: 0: 00:22:07:40:ec:b2 ssid='foo' wpa_ie_len=26 rsn_ie_len=24 caps=0x411 level=-50 freq=2412  wps
wpa_parse_wpa_ie_rsn: invalid group cipher 0x8 (000fac02)
wlan0:    skip - SSID mismatch

One mojeek search and I found the cause: this AP uses WPA TKIP – something that Gentoo describes as “deprecated due to security flaws in 2009.” Of course I didn’t have that compiled in my wpa_supplicant… (I mean, just how could someone still use this???)

So, tkip enabled, wpa_supplicant recompiled, restarted, connected. Now I only need to let the operator know.

Tagged with: wpa_supplicant

Written: 2023-04-16