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WAP - Wireless Access Point
WPA - Wi-Fi Protected Access
PSK - Pre-Shared Key
TKIP - Temporal Key Integrity Protocol
EAP - Extensible Authentication Protocol
EAP-MD5 - MD5-hash-based credentials (poor chice for 802.1x auth in WPA context)
EAP-TLS - TLS (descendant of SSL) encrypt. protocol; strong: uses digital certs.
PEAP - Protected EAP (Microsoft, weak auth for MD5 and MS-CHAP) MS centric!
EAP-TTLS - non-MS drivenalternative to PEAP.
LEAP - Cisco Lightweight EAP
EAP-SIM - MS's EAP-MSCHAPv2

PKI - Public Key Infrastructure

WPA (Protocols)
 |
 |---> Authentication: 802.1x
 |  	    |
 |  	    |---> EAP-TLS
 |  	    |---> EAP-MD5
 |  	    |---> PEAP
 |  	    |---> EAP-TTLS
 |  	    |---> (etc.)
 |
 ----> Encryption: TKIP