SIM-based authentication method capable of supporting...

Details SIM-based authentication method capable of supporting... SIM-based authentication method capable of supporting...

2004-07-06

2009-11-24

Zia, Syed A. (Department: 2431)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C713S176000, C713S155000, C713S154000, C455S410000, C455S411000, C455S436000, C455S437000, C455S442000, C380S270000, C380S229000

Reexamination Certificate

active

07624267

ABSTRACT:
The invention relates to a SIM-based authentication method capable of supporting inter-AP fast handover, which can decrease the number of authentication procedures without negatively influencing the security of the wireless LAN by establishing an encrypted channel for each mobile node and using method 1: an aggressive key pre-distribution and method 2: probe request triggering passive key pre-query technique, thereby reducing the time of inter-AP handover for the mobile node. Furthermore, a re-authentication procedure is started to update the key after the key is used for a long time so as to ensure that the key is safe, thereby effectively achieving a fast and safe wireless LAN environment.

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