Method and apparatus for providing a key for secure...

Details Method and apparatus for providing a key for secure... Method and apparatus for providing a key for secure...

2006-11-20

2008-12-02

Simitoski, Michael J (Department: 2134)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C713S168000, C726S002000, C709S227000, C709S228000, C380S284000, C370S331000, C455S411000

Reexamination Certificate

active

07461253

ABSTRACT:
A method and apparatus for providing a key for secure communications is provided herein. During operation a node wishing to join a network, will authenticate with an authentication server and then derive a pairwise key (e.g., a Pair-wise Transient Key (PTK)) used for encryption of unicast traffic. The node will also create its own group transient key (GTK) for use in encrypting multicast or broadcast traffic. Once the GTK is generated, it will be provided to an authenticator as part of an association request message.

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Aboba, Bernard. “IEEE 802.1X Pre-Authentication”, Jun. 2002.
Altunbasak, Hayriye et al. “Alternative Pair-wise Key Exchange Protocols for Robust Security Networks (IEEE 802.11i) in Wireless LANs”, 2004 IEEE.

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