Secure query processing over encrypted data
US9747456B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2013 |
| Grant date | Aug 29, 2017 |
| Priority date | — |
| Expiry date | Aug 14, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2463/062
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The subject disclosure is directed towards secure query processing over encrypted database records without disclosing information to an adversary except for permitted information. In order to adapting semantic security to a database encryption scheme, a security model for all query processing is specified by a client and used to determine which information is permitted to be disclosed and which information is not permitted. Based upon the security model, a trusted, secure query processor transforms each query and an encrypted database into secure query results. Even though the adversary can view the secure query results during communication to the client, the adversary cannot determine any reliable information regarding the secure query results or the encrypted database.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.