EHT Key Descriptor (0x06) - IEEE 802.11ax/be High Efficiency Used with Wi-Fi 6/6E/7
FILS Key Descriptor (0x05) - IEEE 802.11ai Fast Initial Link Setup Reduces connection time for enterprise networks
Fast Transition Key Descriptor (0x03) - IEEE 802.11r FT Used for fast roaming between access points
PMF Key Descriptor (0x04) - IEEE 802.11w Protected Management Frames Protects management frames from forgery
RC4 Key Descriptor (0x01) - Legacy WPA with TKIP Uses RC4 cipher and HMAC-MD5 for MIC
RSN Key Descriptor (0x02) - WPA2/WPA3 Robust Security Network Uses AES-based ciphers (CCMP, GCMP)
Key Descriptor Type - indicates the key exchange protocol and cryptographic suite