Access control for integrated circuit devices
US11144634B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2017 |
| Grant date | Oct 12, 2021 |
| Priority date | — |
| Expiry date | Jan 19, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2143
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Security systems for microelectronic devices physically lock the hardware itself and serve as a first line of defense by preventing overwriting, modification, maniplation or erasure of data stored in a device's memory. Implementations of the security systems can respond to lock/unlock commands that do not require signal or software interactivity with the functionality of the protected device, and which therefore may be consistent across devices. In various embodiments, a security device passively “listens” on data lines of the protected device and, when a lock or unlock command is received (typically in conjunction with a valid authentication code), the security device physically blocks or allows passage of signals to and from the protected device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.