Access enablement security circuit
US9436844B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2013 |
| Grant date | Sep 6, 2016 |
| Priority date | — |
| Expiry date | Aug 29, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/44
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system-on-chip (SoC) is provided that includes a centralized access enablement circuit for controlling access to a plurality of security features for multiple hardware modules of the system. Progressive security states corresponding to different stages in a chip's design, manufacture and delivery are utilized to enable different access control settings for security features as a part moves from design to end-use. The access enablement circuit for a SoC implementing different security states provides individual access control settings for security features in the different security states. One-time programmable memory and register controls are provided in one embodiment that allow different access control settings for an individual security feature in the same or different security states of the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.