06856800 is referenced by 113 patents and cites 8 patents.

A fast authentication and access control method of authenticating a network access device to a communications network having an access point communicating with a remote authentication (home AAA) server for the network access device. The method includes the step of receiving an access request having an authentication credential from the network access device at the access point. The authentication credential includes a security certificate having a public key for the network access device and an expiration time. The security certificate is signed with a private key for the remote authentication server. The access point locally validates the authentication credential by accessing the public key of the remote authentication server from a local database, and checking the signature and expiration time of the security certificate. If the authentication credential is validated at the access point, the access point grants the network access device conditional access to the network by sending an access granted message to the network access device. The access granted message includes a session key encrypted with a public key for the network access device. The session key is stored in a database associated with the access point. The access point contacts the remote authentication server to check a revocation status of the security certificate for the network access device. If the access point receives a message from the remote authentication server that the authentication credential for the network access device has been revoked, it suspends network access for the network access device.

Title
Fast authentication and access control system for mobile networking
Application Number
10/145301
Publication Number
6856800 (B1)
Application Date
May 14, 2002
Publication Date
February 15, 2005
Inventor
Hui Luo
Marlboro
NJ, US
Zhimei Jiang
Eatontown
NJ, US
Paul Shala Henry
Holmdel
NJ, US
Assignee
AT&T
NY, US
IPC
H04Q 011/00
H04Q 007/20
H04M 001/66
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