Secure proofs of storage for deduplication
US9571287B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 19, 2014 |
| Grant date | Feb 14, 2017 |
| Priority date | — |
| Expiry date | Mar 25, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/24
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Storage providers can securely store data and avoid data duplication with secure derivative data and offload the responsibility of generating the secure derivative data to the data owners. Initially, a data source will provide an encrypted version of data and the secure derivative data to a remote storage provider. The secure derivative data can include a hash of the data, a hash of the encrypted version of the data, a hash tree generated from the data, and an encrypted version of the key used to encrypt the data. When the remote storage provider later receives a request to store the same data, the remote storage provider uses the secure derivative data for secure proofs of storage and for proof of data possession.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.