Communications security
US7624271B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2005 |
| Grant date | Nov 24, 2009 |
| Priority date | — |
| Expiry date | Jun 6, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2463/081
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of authenticating a device's access to a communications node is disclosed. The method of operation includes the communications node generating a first value for use in the derivation of a first encryption key, the first encryption key being at least partially used to authenticate the device's access to the communications node in a first communications exchange. The method of operation includes the communications node modifying the first value, independent of the device, to create a second value. The method includes the communications node using the second value in authenticating the device's access to the communications node in a second communications exchange. Embodiments of the present invention include but are not limited to communications nodes and devices, subsystems, and systems equipped to operate in the above-described manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.