Method and system for securing a computer system
US7398390B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 8, 2003 |
| Grant date | Jul 8, 2008 |
| Priority date | — |
| Expiry date | Sep 3, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/577
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Security-state-reporting and data-control functionality introduced into a computer system to monitor and report the security state of the computer system and to store and make selectively available, for processes executing within a computer system, security-state-associated data. The hardware element includes two control registers, a current-security-state control register (“CSS”) and a current-data-bank control register (“CDB”). When the CSS is read, the CSS reports the current security state of the computer system, with security states represented as unsigned integers starting from a highest security level of 0 and decreasing with unsigned integers of increasing magnitudes. The CDB controls access to one or more data-register banks, positioning a data-register window to allow access only to those data-register-bank registers associated with the currently reported security state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.