Reusable fuzzy vault system
US10826686B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 2018 |
| Grant date | Nov 3, 2020 |
| Priority date | — |
| Expiry date | Apr 30, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/08
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Described is a system for biometric based security. The system applies a reusable fuzzy vault (RFV) process to protect secret information. The RFV process comprises a locking algorithm and an unlocking algorithm. The locking algorithm takes as input a fuzzy string m generated from readings of biometrics and secret information sk to be protected, The locking algorithm outputs a public string vault and a hash value h of sk. The unlocking algorithm takes as input a public string vault and a fuzzy string m′, and outputs a string sk′ if fuzzy string m′ is sufficiently close to fuzzy string m. The unlocking algorithm further computes a hash value h′ of sk′ and compares it with h. The system allows access to the secret information sk when h′ is equivalent to h.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.