Electronic data processing device
US7454629B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2004 |
| Grant date | Nov 18, 2008 |
| Priority date | — |
| Expiry date | Jul 2, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C29/022
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An electronic data processing device, comprising an access protected memory, provided for storing secure data and a data processing member, provided for processing said secure data, said terminal comprises a tampering detection and protection circuit provided for detecting a tamper condition and for generating a tamper signal upon detection of said tamper condition, said tampering detection and protection circuit being connected to a tampering sequencer, provided for disabling said processing member upon receipt of said tampering signal, said memory comprises a security register provided for storing keys for encrypting said secure data and a memory section provided for storing keys for encrypting said secure data and a memory section provided for temporarily storing secure data processed by said data processing member, said tampering sequencer comprises an internal clock generator provided for generating, upon receipt of said tamper signal a tamper pulse and a series of clock pulses, said tampering sequencer being provided for erasing under control of said tamper pulse, said security data stored in said security register and for erasing, under control of said series of clock pulses…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.