Method for the authentication of a portable object by an offline terminal, and apparatus for implementing the process
US5528231A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 7, 1994 |
| Grant date | Jun 18, 1996 |
| Priority date | — |
| Expiry date | Jun 7, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3271
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A process for authentication by an offline terminal (1) of a portable object (2) including a processing circuit (4) able to deliver a secondary value (Rx) which the function of a primary value (Qi) transmitted by the terminal. An authentication table (5) is placed in the terminal which associates a series of primary values (Qi) and a series of control values (Ui), each control value being the transformation by a oneway function of the secondary value (Rx) calculated by the processing circuit of an authentic portable object. At the time of a connection of a portable object with the terminal, one of the primary values (Qi) from the table is transmitted to the portable object, the one-way function is applied to the secondary value (Rx) received from the portable object, and the result obtained is compared with the corresponding control value (Ui) from the table.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.