Method and apparatus for restricting access within a wireless local area network
US5199072A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 3, 1992 |
| Grant date | Mar 30, 1993 |
| Priority date | — |
| Expiry date | Feb 3, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/80
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
User module (12) access capabilities are provided within a wireless Local Area Network (LAN) having distinct user groups (1-3). In this effort, a password is entered into a UM (12) seeking access within a user group (1-3). In response to the password, the UM (12) selects a key and a polynomial from memory (20). Thereafter, packets received by and transmitted from the UM (12) are encrypted, by encryption circuit (52), with the selected key and polynomial. Communictions is permitted if the UM selected key and polynomial are identical to those used by the user group CMs (10). Alternatively, the key is generated as a function of the password, while a polynomial is selected from memory (20).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.