Method for voting with secret shares in a distributed system
US8234518B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 21, 2009 |
| Grant date | Jul 31, 2012 |
| Priority date | — |
| Expiry date | Sep 11, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/1484
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A replicated decentralized storage system comprises a plurality of servers that locally store disk images for locally running virtual machines as well as disk images, for failover purposes, for remotely running virtual machines. To ensure that disk images stored for failover purposes are properly replicated upon an update of the disk image on the server running the virtual machine, a hash of a unique value known only to the server running the virtual machine is used to verify the origin of update operations that have been transmitted by the server to the other servers storing replications of the disk image for failover purposes. If verified, the update operations are added to such failover disk images. To enable the replicated decentralized system to recover from a failure of the primary server, the master secret is subdivided into parts and distributed to other servers in the cluster. Upon a failure of the primary server, a secondary server receives a threshold number of the parts and is able to recreate the master secret and failover virtual machines that were running in the failed primary server.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.