Authenticating method between a smart card and a terminal
US6839840B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 4, 1999 |
| Grant date | Jan 4, 2005 |
| Priority date | — |
| Expiry date | Nov 4, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06Q20/40975
- WIPO fieldIT methods for management
- WIPO sectorElectrical engineering
Abstract
The invention concerns a method enabling a smart card and a terminal whereto it is connected to authenticate each other. The invention is characterized in that at the end of each transaction the terminal calculates, from data representing the card at said transaction end, a secret code CSC2 which is recorded in a zone ZCSC with unprotected access in the card memory and an authentication certificate CA2 which is recorded in a zone ZCA with protected access of the memory by presenting a secret code CSC2. At the next transaction, the terminal calculates, by means of data contained in the card, a secret code and an authentication certificate which are compared to those previously recorded to perform authentication. The invention is applicable to smart cards.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.