CCMP headers Key ID now equivalent to Key Value used in encryption
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CCMP headers Key ID now equivalent to Key Value used in encryption
Tags:
#MAC Layer
Using the above mentioned AP, with Wireless Security Set to WPA2-PSK, and Group Key Handshake Interval set to 30s (Used for Stress Testing), We have distinguished the below:
Test Environment:
- Two Linux Ends (Station1 and Station 2) are connected to the AP
- ARPing Utility is used to trigger group frames
The AP Perform:
- GKHS with GTK Key ID 2 and Key of Value 2
- Send ARP Group DA Frames continuously from Station 1 to Station 2
- New GKHS with GTK Key ID1 and new Key of Value 1
- Keep Sending Group DA Frames from Station 1 to Station 2 over the AP
- CCMP Failure occurs where on wireshark we can observe that a frame is sent using Key ID 2 (Old Key ID) with the New Key Value (Key of Value 1)