Authentication protocol using a multi-factor asymmetric key pair
US7386720B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2005 |
| Grant date | Jun 10, 2008 |
| Priority date | — |
| Expiry date | Aug 27, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/085
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Techniques for user authentication based upon an asymmetric key pair having a public key and a split private key are provided. A first portion of the split private key is generated based upon multiple factors under control of the user. The factors include a password. A challenge is cryptographically combined with a first one of the multiple factors, but not the user password, to form a first message. The first message is transformed with the generated first portion to form a second message, which is then sent to an authentication entity. The sent second message is transformed to authenticate the user by proving direct verification of user control of the first factor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.