Secure execution of program code
US6651171B1 · kind B1 · utility
210Cited by
28References
70Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 6, 1999 |
| Grant date | Nov 18, 2003 |
| Priority date | — |
| Expiry date | Apr 6, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/1491
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Curtained operation provides trusted execution of code and secrecy of data in a secure memory. Curtained code can only be executed from within certain address ranges of a curtained memory region secure against access by code from without the region. Code entry points are restricted, and atomic execution is assured. The memory is organized into multiple hierarchically curtained rings, and peer subrings are denied access to each other as well as to more secure rings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.