Invalid policy detection
US7664828B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2004 |
| Grant date | Feb 16, 2010 |
| Priority date | — |
| Expiry date | Apr 27, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/5682
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Implementations are described and claimed herein to detect an invalid policy that may reside in a cache at a client. An expired policy is removed from cache and a current policy is requested. Otherwise the cached policy may be used. The client indicates which policy it is using by generating a policy digest, including, in compressed form, one or more assertions. If the host determines the policy digest is invalid, the host issues an invalid digest fault. If the policy digest is valid, but the assertions included in the policy digest are invalid, the host issues an invalid policy fault. In either case, the client is notified that the cached policy is no longer valid and that a current policy should be requested.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.