Secure recovery in a serverless distributed file system
US8205090B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 2008 |
| Grant date | Jun 19, 2012 |
| Priority date | — |
| Expiry date | Sep 22, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3255
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Systems and methods for secure file writes after a catastrophic event are allowed over an unauthenticated channel in a serverless distributed file system if an authenticator accompanies the secure file writes. The authenticator can be a power-of-attorney certificate with time limitations, a vector of message authenticated code, or a single message authenticator with secured with a secret shared among members of the serverless distributed file system. The serverless distributed file system includes at least 3f+1 participating computer members, with f representing a number of faults tolerable by the system. The group requires at least one authenticator for file creation and file uploads. Any changes to files stored among the members can be made over an unauthenticated channel if the file changes are secured by the authenticator and the group is able to verify the authenticator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.