Time-based secure key synchronization
US8634560B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2010 |
| Grant date | Jan 21, 2014 |
| Priority date | — |
| Expiry date | Apr 11, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/068
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A server device initiates a traffic encapsulation key (TEK) re-key sequence for a group virtual private network (VPN), based on an upcoming expiration time for an existing TEK. The server device sends, via a push message during a first time period immediately after the initiating, a new TEK to members of the group VPN. The server device receives, during a second time period that immediately follows the first time period, a pull request, for the new TEK, from one of the members of the group VPN, and sends, to the one of the members, the new TEK, where the re-key sequence transitions all the members of the group VPN from the existing TEK key to the new TEK key before the expiration time for the existing TEK.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.