Method and system for protecting data flow between pairs of branch nodes in a software-defined wide-area network
US10142298B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2016 |
| Grant date | Nov 27, 2018 |
| Priority date | — |
| Expiry date | May 27, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/083
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for protecting data flows between pairs of branch nodes in a software-defined wide-area network (SD-WAN) is disclosed. In an embodiment, the method involves establishing secure connections between a SD-WAN controller and branch nodes in a plurality of branch nodes, wherein each branch node advertises a half-key to the SD-WAN controller via its secure connection, distributing advertised half-keys to branch nodes in the plurality of branch nodes via the established secure connections, wherein the advertised half-keys distributed to each branch node are the half-keys advertised by peer branch nodes of the branch node, and encrypting payloads for transmission from a first branch node in the plurality of branch nodes to a peer branch node in the plurality of branch nodes using a shared secret key, the shared secret key generated using the half-key of the first branch node and the distributed half-key of the peer branch node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.