Method and system for secure key generation
US7502475B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2003 |
| Grant date | Mar 10, 2009 |
| Priority date | — |
| Expiry date | Nov 30, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/605
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Certain aspects of the invention for producing a secure key may comprise a secure key generator that receives a first, second and third input keys and utilizes these keys to generate a first output key. The first, second and third input keys may be a customer key, customer key selection and key variation, respectively. The first output key may be generated so that it is unique, differs from the first input key and is not a weak or semi-weak key. The first, second and third input keys may be mapped to generate mapped output key data and an intermediate key generated based on the first input key. The intermediate key and the output key data may be scrambled to create a scrambled output. At least a portion of the output key data may be masked and XORed with the scrambled output to generate the first output key.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.