Method and apparatus for verification of at least a portion of a datagram's header information
US8228896B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 22, 2006 |
| Grant date | Jul 24, 2012 |
| Priority date | — |
| Expiry date | Jan 29, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L47/431
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
At least part of the information in a packet's header may be verified so that a network element may rely on the information, e.g. to provide enhanced QoS and/or to identify the source. The information may be verified by a verifying agent (VA) or a transmitting network element. Where a VA is used, the VA may sign the header information issuing its private key of a private/public key pair. The signature may take the form of a digest, certificate, or other form. Once the header information has been signed, the client may transmit packets using headers that include the signed information and may include the VA's signature as an option in the header or in another area of the packet. The VA may also transmit packets directly. The signature may be decrypted by other NEs to extract the signed information, which can then be compared with the normal header information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.