ecrit-6----Page:8
1 2 3 4 5 6 7 8
|
Emergency Services Use Case #2: Public Credentials ESO calls have no cryptographic protection (tampering, injection, forgery) To provide cryptography, 802.11i security must be used Pre-shared key for all emergency networks is not feasible 802.11u provides a way for a network to set up an “emergency public credential” to use EAP methods EAP method needs clarification AP (11u-capable) STA (11u-capable) Association Request Association Response Initiate higher-layer call (e.g. SIP) GAS Native Query (emergency public credentials) GAS Native Query Response (credentials) EAPOL/EAP-Identity-Response (credentials) EAPOL/EAP-Identity-Request EAP method authentication 4-Way Handshake ADDTS Request (w/Expedited BW Request) ADDTS Response |