Securing multifactor split key asymmetric crypto keys
US8340287B2 · kind B2 · utility
34Cited by
44References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2010 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | Sep 19, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3271
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Techniques for securing an asymmetric crypto-key having a public key and a split private key with multiple private portions are provided. A first one of multiple factors is stored. All of the factors are under the control of a user and all are required to generate a first private portion of the split private key. The first private portion not stored in a persistent state. A second private portion of the split private key under control of an entity other than the user is also stored. The first private portion and the second private portion are combinable to form a complete private portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.