Session key generation and distribution with multiple security associations per protocol instance
US8774411B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 2009 |
| Grant date | Jul 8, 2014 |
| Priority date | — |
| Expiry date | Apr 30, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/80
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A single instance of a session key generation protocol is executed in a manner that generates a plurality of security associations between user equipment and a first network element of a communication system. In one aspect, a first one of the security associations is utilized to secure data sent between the user equipment and the first network element in an ongoing communication. In conjunction with a handoff of the ongoing communication from the first network element to a second network element of the communication system, another one of the security associations is selected, and the other selected security association is utilized to secure data sent between the user equipment and the second network element in the ongoing communication. The security associations may comprise respective sets of session keys derived from a single pairwise master key.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.