Authenticated operations and event counters
US8566940B1 · kind B1 · utility
5Cited by
2References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 25, 2009 |
| Grant date | Oct 22, 2013 |
| Priority date | — |
| Expiry date | Apr 14, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2135
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Apparatus and methods protect a memory device from a security attack. A security attack may lead to an unusually high number of security events, such as power cycling of a device hosting the computing system and/or memory device. Power cycling events of the memory device can be counted. A count value can be maintained of power cycling events occurring within a particular period of time. The count value can be compared to a threshold number. Normal operation is permitted if the count value does not exceed the threshold number. A security action is invoked when the count value exceeds the threshold number.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.