Method of constructing a table for determining match values
US11716328B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2021 |
| Grant date | Aug 1, 2023 |
| Priority date | — |
| Expiry date | May 5, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/0428
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method is disclosed. The method includes constructing a table by encrypting a plurality of unencrypted match values using a public key to produce a plurality of encrypted match values. Each unencrypted match value being an indication of a degree of match between an input biometric template and an enrollment template. The method includes arranging each row so that each row has a match value and a corresponding encrypted match value. The method also includes storing, in a database, the table comprising the plurality of encrypted match values and the plurality of unencrypted match values. The server computer can be programmed to receive an encrypted biometric template and the table is used to determine a match value using the encrypted biometric template, and the match value is used to determine if a person is enrolling a biometric template associated with the encrypted biometric template more than once.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.