Method for generating cryptographic half-keys, and associated system
US8861726B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 2010 |
| Grant date | Oct 14, 2014 |
| Priority date | — |
| Expiry date | Aug 4, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/085
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for generating cryptographic half-keys makes it possible to generate n pairs (Ki1, Ki2), 1≦i≦n, of cryptographic half-keys, each of said pairs making it possible to reconstruct an access key KPL specific to a secure apparatus, said method comprising at least the following steps: generating and storing, with the help of a management center distinct from said apparatus, a first series of n half-keys Ki1 on a recording medium; supplying the apparatus with said recording medium so as to generate, with the help of said local key KPL and of the n half-keys Ki1 stored on said medium, a second series of n half-keys Ki2 making it possible to form said n pairs (Ki1, Ki2). The method applies notably to the creation of several keys for access to a secure apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.