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Siemens IEEE802.11 User Manual

Page 61

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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