Security modes in Wifi

Security modes in Wifi
1 Open

2 WPA(Personal)
 - Supported Cipher Suites TKIP(Temporal Key Integrity Protocol)
 - Authentication type - PSK
 - Present in VS IE WPA
 - hostapd.conf
       - wpa=1
       - wpa_psk="encrypted key"
       - wpa_pairwise=TKIP
Pairwise 4 way Handshake
 AP        STA
     -M1->
    <-M2-
    -M3->
    <-M4-
Groupwise 2 way Handshake
    -M1->
    <-M2-
(AP mode - group key is set locally after 1st STA connect, any STA leaves or group rekey happens)


3 WPA2(Personal) -
- Supported Cipher Suites CCMP
- Authentication type - PSK
- Present in RSN IE
- hostapd.conf
      -wpa=2
      -wpa_psk="encrypred key"
      -rsn_pairwise=CCMP
M1 and M2 for pairwise, M3 and M4 for groupwise

4 Mixed mode
 - Supported Cipher Suites TKIP and CCMP