Method and system for caching virus-free file certificates
US6892303B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2000 |
| Grant date | May 10, 2005 |
| Priority date | — |
| Expiry date | Oct 8, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/645
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to computer viruses and more particularly to a method and system for caching anti-virus file certificates. Each anti-virus certificate associated with a file comprises a file signature. The file signature is generated by a virus-free certificate authority, which avoids the system, which receives the file to check this file for all existing viruses. The virus-free certificate authority validates the file against all known viruses, using one or several anti-virus checkers. In case of new viruses, only the virus-free certificate authority is changed and the only process performed by the system receiving the file is to verify the file against the file signature included in the virus-free certificate, and to filter the file according predetermined rules. The present invention drastically simplifies the computing resources for detecting viruses on network devices such as IP Routers and Firewalls.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.