Method and device for countering fingerprint forgery attacks in a communication system
US9143528B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 2013 |
| Grant date | Sep 22, 2015 |
| Priority date | — |
| Expiry date | Jun 18, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W12/79
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and a fingerprinting device for countering fingerprint forgery in a communication system. The fingerprinting device obtains and stores a reference fingerprint for a client device, generates and transmits decoy traffic that appears to originate from the client device, the decoy traffic having different fingerprinting properties than real traffic from the client device, generates a fingerprint for non-decoy traffic purportedly from the client device, and compares the generated fingerprint with a reference fingerprint. A forged fingerprint is detected if there is a mismatch. The decoy traffic preferably comprises frames to which no response is needed. The invention is particularly suited for 802.11 using fingerprints based on duration fields of received frames and the decoy traffic is then preferably probe request frames and null data frames.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.