Siemens IEEE802.11 Manual do Utilizador descarregar pdf (Página 61)

WLAN-IEEE802.11 Tutorial (Maximilian Riegel), 021018-wlan-tutorial.ppt Page 61 © Siemens, 2002

IEEE802.11i:

Robust Security Network (RSN)

Additional enhancement to existing IEEE802.11 functions:

n Data privacy mechanism:

– TKIP (Temporal Key Integrity Protocol) to enhance RC4-based

hardware for higher security requirements, or

– WRAP (Wireless Robust Authenticated Protocol) based on AES

(Advanced Encryption Standard) and OCB (Offset Codebook)

n Security association management:

– RSN negotiation procedures for establishing the security context

– IEEE802.1X authentication and key management

Associate

EAP Identity Request

EAP Identity Response

EAP Request

EAP Response

EAP Success

Access Request

Access Challenge

Access Request

Access Accept

Authentication

Server

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Siemens IEEE802.11 Manual do Utilizador Página 61