Generating user-dependent keys and random numbers
US6687375B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 1999 |
| Grant date | Feb 3, 2004 |
| Priority date | — |
| Expiry date | Jun 2, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/0866
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods, systems and computer program products are provided which generate a cryptographic key utilizing user specific information to generate a user dependent key. The user specific information may be a user identification or biometric information associated with a user. In particular embodiments of the present invention a seed value is modified with biometric information to generate a user dependent key value. In alternative embodiments a key value is hashed with user specific information or user specific information is hashed and then combined with the key value to generate the user dependent key value. In still another embodiment of the present invention the space of potential key values is divided into subspaces and the subspaces assigned based on user specific information. A key value is then generated from the assigned subspace. Thus, the generated key values for different users are guaranteed to be disjoint.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.