Method for querying data in privacy preserving manner using attributes
US8898478B2 · kind B2 · utility
3Cited by
1References
15Claims
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Key dates
| Filing date | Jun 15, 2012 |
| Grant date | Nov 25, 2014 |
| Priority date | — |
| Expiry date | Feb 9, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2107
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A client queries a set of encrypted data instances located at a server with a query attribute of the client. The set of encrypted data instances is associated with a set of ciphertexts, wherein a ciphertext is an encrypted function of a representation of a corresponding data instance and a data instance attribute extracted from the corresponding data instance. The client decrypts the ciphertext from the set of ciphertexts based on a distance function of the query attribute and the data instance attribute to produce the representation, and accesses the corresponding data instance using the representation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.