Multiple-use smart card with security features and method
US6708893B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 12, 2002 |
| Grant date | Mar 23, 2004 |
| Priority date | — |
| Expiry date | Aug 15, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06Q20/40975
- WIPO fieldIT methods for management
- WIPO sectorElectrical engineering
Abstract
A smart card is adapted to partially include and employ a triply-secure algorithm for data exchange. The algorithm verifies a user's identity and his simultaneous membership in any groups that he has joined. For this purpose, the algorithm requires only a single insertion of the smart card and only a single input of the user's personal identification number. The algorithm can be used in smart cards or in computer networks for identity verification and membership proof. A combination of three different hard problems is used. The first one is based on integer factorization, such as the RSA authenticating technique, and the second one is based on a discrete logarithm, and the third one is based on the coefficients of a polynomial function. In a typical application using smart cards, a certification authority (CA) establishes requirements for preparation and issuance of a multi-purpose card.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.