Method and apparatus for generating pairwise cryptographic transforms based on group keys
US7234058B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 1, 2002 |
| Grant date | Jun 19, 2007 |
| Priority date | — |
| Expiry date | Nov 26, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/068
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Group key management techniques are applied to generating pair-wise keys for point-to-point secure communication applications. Nodes participating in a secure communication group each receive a group key and associated policy information. When a first node wishes to establish a secure point-to-point connection to a second node, the first node derives a pairwise key from the group key and policy information, for example, by hashing the group key and information identifying the two nodes. As a result, a pairwise key is generated without exchanging negotiation messages among the two nodes and without expensive asymmetric cryptographic computation approaches.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.