Searchable encryption processing system and searchable encryption processing method
US10489604B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 2015 |
| Grant date | Nov 26, 2019 |
| Priority date | — |
| Expiry date | Jun 26, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/0894
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A searchable encryption processing system includes a server including: a communication device to communicate with another device; a storage device configured to store as search target data, secret data obtained by concealing plaintext data, and a secret index obtained by concealing a plaintext index to classify the plaintext data; and an arithmetic device to execute a process including receiving, from a search client, a secret data query obtained by concealing a plaintext query, and a secret index query obtained by concealing a plaintext index, searching the storage device for a secret index matching the secret index query based on a predetermined searchable encryption technique, searching a secret data group classified by the matching secret index for secret data matching the secret data query, and returning the searched secret data to the search client.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.