Process and apparatus for authenticating or certifying at least one item of information contained in a memory of a removable and portable electronic carrier, such as a card
US4544833A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 20, 1983 |
| Grant date | Oct 1, 1985 |
| Priority date | — |
| Expiry date | Apr 20, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/56
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Process and device for authenticating or certifying at least one item of information contained in a memory of a portable electronic carrier, such as a credit card. To certify an item of information (I) recorded in a memory (M) of a card (C), the process consists in causing processing circuits (TC) of the card (C) to execute a program (P) which takes into account the address of the information (I) in the memory (M). The address is communicated to the card (C) externally. The execution of the program (P) leads to a result (R) which is compared with a result (R') calculated in identical fashion by a transaction apparatus (l) to which the card (C) is connected, agreement between the results establishing the authentication of the information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.