Steganographically authenticated packet traffic
US7590855B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 30, 2002 |
| Grant date | Sep 15, 2009 |
| Priority date | — |
| Expiry date | Jul 30, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/1433
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
To assist a destination/intermediary node in authenticating a communications packet as originating from a certain source node, the source node hides a cryptographically generated first special value based on the packet in a header portion of the communications packet. Upon receipt of the communications packet, the destination/intermediary node cyptographically generates a second special value also based on the packet for comparison to the first special value extracted from hiding in the header portion. If the first and second special values match, the destination/intermediary node has authenticated the communications packet as originating from the source node. The foregoing may be implemented in a number of situations, but has special use in connection with the detection of packet communications vulnerability assessment probe traffic by an intrusion detection system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.