Each MAG maintains the information of the group of sensors and aggregates the Authentication-Authorization- Accounting (AAA) query messages to the AAA server
in the authentication process.
In our scheme, MS can show its corresponding credential ticket to the target BS/AP whenever a VHO occurs, and then the MS and target BS/AP can use the credential ticket to perform one authenticated key agreement like 3-handshake/4-handshake to derive a shared session key for the future communication without interacting with the AAA server
. Meanwhile, MS only provides a pseudonym instead of its real identity and changes its pseudonym in each HO authentication phase, so it can protect the MS's identity and location privacies.
(4) Stolen-verified Attack Resistance: In SK-[L.sup.2]AM, AAA server
does not have to save any verified information.
The MN Nonce is generated by the MN and communicated to the AAA server
in the HKReq message.
The addition of a chip on the card also enables PKI login, e-mail encryption and digital signature capabilities, and is fully integrated with the ActivIdentity Software portfolio, including SecureLogin SSO, ActivClient, ActivID Card Management System, 4TRESS AAA Server
and 4TRESS Authentication Server, the company said.
Both station and AAA servers
derive identical keys, and the AAA server
returns that key to the access point.
The AAA server
is used to authenticate and authorize users for network access and store subscriber usage statistics for billing and invoicing.
-- New AAA server
and Mobile IP technologies that give mobile users real-time, "always connected" access to IP networks were introduced in 1999 as part of the packet-switched platform.