Safe self-modifying code
US8850574B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2011 |
| Grant date | Sep 30, 2014 |
| Priority date | — |
| Expiry date | Jan 13, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/53
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for runtime language-independent sandboxing of software. In one aspect, a system implements an extended Software Fault Isolation (SFI) software sandboxing system configured to provide a user-mode program interface for receiving runtime requests for modifying verifiably safe executable machine code. Requests can include dynamic code creation, dynamic code deletion, and atomic modification of machine code instructions. A runtime modification of a verifiably safe executable memory region is made in response to each received runtime request, and code within the modified memory region has a guarantee of safe execution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.