Traffic flow identifiers resistant to traffic analysis
US9686186B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 2015 |
| Grant date | Jun 20, 2017 |
| Priority date | — |
| Expiry date | Jun 2, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/22
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A network device receives packets for one or more traffic flows to be sent into a network. The network device computes a flow identifier for each of the one or more traffic flows based on information contained in one or more headers of the packets for each of the one or more traffic flows and based on at least one value that is changed on an ongoing basis. The packets for each of the one or more traffic flows are encrypted to produce encrypted packets for each of the one or more traffic flows. An encapsulation is added to the encrypted packets for the one or more traffic flows. The flow identifier is included in a field of the encapsulation for a corresponding traffic flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.