Method for securing over-the-air communication in a wireless...

Details Method for securing over-the-air communication in a wireless... Method for securing over-the-air communication in a wireless...

H - Electricity

04

L

H04L 9/28 (2006.01) H04L 12/28 (2006.01) H04L 29/06 (2006.01) H04Q 7/36 (2006.01)

Patent

CA 2277758

In the method for securing over-the-air communication in wireless system, a mobile sends a system access request and dummy data associated with the system access request to a network. The network sends a first data stream including a first data portion to the mobile in response to the system access request and the dummy data. The mobile extracts the first data portion from the first bit stream, and sends a second bit stream to the network. The second bit stream includes a second data portion. The mobile and the network both generate a key based on the first data portion and the second data portion, and establish a first encrypted and authenticated communication channel in cooperation using the key. The mobile then transfers authorizing information to the network over the fist encrypted and authenticated communication channel. If accepted, a second encrypted and authenticated communication channel is established. The network then sends sensitive information such as the root or A-key to the mobile over the second encrypted and authenticated communication channel.

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