Secure memory having anti-wire tapping
US6094724A · kind A · utility
56Cited by
10References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 26, 1997 |
| Grant date | Jul 25, 2000 |
| Priority date | — |
| Expiry date | Nov 26, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C8/20
- WIPO fieldIT methods for management
- WIPO sectorElectrical engineering
Abstract
According to a first aspect of the present invention, cryptography without a dedicated microprocessor on the smart card is employed to provide authentication of both the smart card and the smart card reader, and wherein the cryptography provides only a preselected number of attempts at authentication, if not reset, before access to the smart card is denied permanently. According to a second aspect of the present invention, access to each the memory zones of the smart card may be individually provided by cryptography, passwords or both.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.