Group key exchanges with failures
US7853015B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 14, 2008 |
| Grant date | Dec 14, 2010 |
| Priority date | — |
| Expiry date | Jun 4, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/16
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for generating a session key on demand in a network among participating network devices, including choosing a private and public key according to a public key encryption scheme, and broadcasting the public key to each other participating network device; choosing a local contribution value from a multiplicative group of size q; encrypting the local contribution value under the received public key to an encrypted contribution value and sending the encrypted contribution value; receiving encrypted contribution values and deriving decrypted contribution values by applying the private key; deriving a blinded session key from the decrypted contribution values and the local contribution value; agreeing on one of the blinded session keys by using an agreement protocol; and deriving the session key from the agreed-on blinded session key by applying one of the decrypted contribution values and the contribution value A corresponding computer program element, computer program product, and computer device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.