Offline methods for authentication in a client/server authentication system
US9281945B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2005 |
| Grant date | Mar 8, 2016 |
| Priority date | — |
| Expiry date | May 10, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/80
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for providing authentication of a user of a recipient unit when the recipient unit is off-line includes storing one or a plurality of challenge-reply sets associated with an article based on an on-line communication with a sender unit. Each of the challenge-reply sets includes at least a challenge-reply pair for use in off-line authentication of the user for a particular resource available through the recipient unit. When the user is offline, the method includes selecting at least one of the plurality of stored challenge-reply sets for off-line authentication of the user for the particular resource available through the recipient unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.