Enhancement to authentication protocol that uses a key lease
US7480939B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 6, 2001 |
| Grant date | Jan 20, 2009 |
| Priority date | — |
| Expiry date | Sep 20, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W12/10
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and system for using a key lease in a secondary authentication protocol after a primary authentication protocol has been performed is described. In one embodiment, the primary authentication protocol comprises a strong, secure, computationally complex authentication protocol. Moreover, the secondary authentication protocol comprises a less complex (compared to the primary authentication protocol) and less secure (compared to the primary authentication protocol) authentication protocol which can be performed in a length of time that is shorter than a length of time required to perform the primary authentication protocol. In an embodiment, the key lease includes context information. Moreover, a new session encryption key is computed after each time a quick re-authentication is performed by executing the secondary authentication protocol using the key lease, whereas the session encryption key is used for encrypting communication traffic, providing a solution to the potential communication traffic replay threat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.