In order to use the WPA3 with the WF(M)200 through Linux, you could use the following wpa_supplicant.conf:

ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1

network={
ssid="WPA3_000"
psk="xxxxxxxxxxxxx"
key_mgmt= SAE
proto=RSN
pairwise=CCMP
group=CCMP
ieee80211w=2
}

Note ieee80211w could be set to 1 or 2. See the definition of the parameters in the https://w1.fi/cgit/hostap/plain/wpa_supplicant/wpa_supplicant.conf

With a CISCO AP AIR-AP1852E-E-K9, firmware 8.10.105.0 configured with WPA3 security and a Raspberry Pi with the SD-card 3.2 with BRD8022/23A with FW3.8.0 and the Driver WFX 2.5.2, you could get this with WPA3 security enabled:

First with a Wi-Fi scan, you should get SAE on the security used by the AP with WPA3:

pi@rpi-123:~ $ wfx_sta --scan
Starting  wpa_supplicant
Scanning access points...
bssid / frequency / signal level / flags / ssid
x:x:x:x:x:x       2462    -43     [WPA2-PSK+SAE-CCMP][ESS]        WPA3_000
...

Then using the wpa_supplicant_WPA3.conf above, we could get the association like below:

pi@rpi-123:~ $ wfx_sta --conf wpa_supplicant_WPA3.conf
Asking dhcpcd to control wlan0
Starting  wpa_supplicant
Setting up connection
Waiting for connection
Associated
Waiting for DHCP
DHCP lease obtained
Success: wlan0 connected to WPA3_000 with IP X.X.X.X

Then we could get the following status with wpa_cli:

pi@rpi-123:~ $ wpa_cli status
Selected interface 'wlan0'
bssid=xx:xx:xx:xx:xx:xx
freq=2462
ssid=WPA3_000 
id=0
mode=station
pairwise_cipher=CCMP
group_cipher=CCMP
key_mgmt=SAE
pmf=1
mgmt_group_cipher=BIP
sae_group=19
wpa_state=COMPLETED
ip_address=X.X.X.X

We could check the status indicating key_mgmt=SAE and pmf=1 in bold above because it is associated with an AP using the WPA3 security.

Remarks:

• WPA3 security is now mandatory for all Wi-Fi Alliance certified products but it is relatively new and not supported by all Access Point or station already installed or sold in 2020.
• Please note WPA3 could be not supported with old wpa_supplicant release. We have tested successfully this with a Linux kernel 4.19.57-v7l+ and the wpa_supplicant release v2.8-devel.