Method for securing over-the-air communication in a wireless system
US6374355B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 31, 1998 |
| Grant date | Apr 16, 2002 |
| Priority date | — |
| Expiry date | Jul 31, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W12/06
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
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 first 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.