Wired logic microcircuit and authentication method having protection against fraudulent detection of a user secret code during authentication
US6152367A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 26, 1998 |
| Grant date | Nov 28, 2000 |
| Priority date | — |
| Expiry date | Mar 26, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An authentication method for a wired-logic microcircuit mounted on a support and a microcircuit reading terminal. The microcircuit is provided with a memory which has data readable by the terminal. A secret code of the microcircuit is arranged in a region of the memory that is not readable by the terminal. The microcircuit generates an authentication code from the data in the memory that is readable by the terminal, the secret code and a random code. The terminal generates an authentication code from the data in the microcircuit memory that is readable by the terminal, a secret code provided to the terminal by a microcircuit user and random code, and the authentication code generated by the microcircuit is compared with the authentication code generated by the terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.