Authentication scheme for ad hoc and sensor wireless networks
US7096359B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2001 |
| Grant date | Aug 22, 2006 |
| Priority date | — |
| Expiry date | Nov 5, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/123
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Strong authentication of packets sent between nodes of different clusters in a two-tier ad hoc network is provided by the cluster heads. Each cluster head authenticates nodes that enter the cluster. Thereafter, when a sending node requests a session from its cluster head with a receiving node in another cluster, the cluster head negotiates a session secret key (SSK) with the corresponding cluster head of the receiving node. Further, the cluster head provides authentication tags for the sending node to use with each packet. Each authentication tag is time-stamped, digitally signed by the cluster head, encrypted with the SSK, and includes indicators of message integrity, including a sequence number and TCP header field of checksum. The sending node further calculates a check result from a number of the authentication tags, encrypted with the SSK, so that the receiving node can authenticate the number of packets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.