Patent ID: 8532304
Filing Date: 2013-09-10
Classification: H04L,H04W

Abstract:
1. A method, comprising: executing, by an access controller, a key agreement protocol with a terminal device via a first communication channel to generate a first key corresponding to the terminal device, wherein said key agreement protocol is authenticated using a second key, wherein the second key is sent to the terminal device from a trusted device on a wireless network via a second communication channel prior to execution of the key agreement protocol, wherein the second key is generated based on a function of a third key and at least one other variable, and wherein the terminal device, the trusted device and the access controller are separate devices; storing, by the access controller, an entry corresponding to the terminal device in an access database of the wireless network, wherein the entry stores the first key, the second key and the third key in association with one another, and wherein the third key is specific to a type of device; authenticating, by the access controller, the terminal device using the first key, said authenticating comprising querying the access database for the entry corresponding to the terminal device to determine authentication and access rights of the terminal device; authorizing the terminal device to access the wireless network using the first communication channel upon successful authentication; and upon determining that access authorization of the terminal device is to be revoked, revoking the terminal device's authorization to access the wireless network by deactivating the first key and modifying the second key.