Secure word search
US11461551B1 · kind B1 · utility
4Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 23, 2019 |
| Grant date | Oct 4, 2022 |
| Priority date | — |
| Expiry date | Sep 19, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3093
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method may include generating word string vectors for word strings in a document, obtaining encrypted word string vectors by encrypting the word string vectors, generating a search vector for a search query, obtaining an encrypted search vector by encrypting the search vector, calculating encrypted distances between the encrypted word string vectors and the encrypted search vector, obtaining a decrypted distance by decrypting an encrypted distance, and using the decrypted distance, determining a semantic match between the search query and the document.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.