Verification of biometric templates for privacy preserving authentication
US12355891B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Oct 6, 2023 |
| Grant date | Jul 8, 2025 |
| Priority date | — |
| Expiry date | Oct 6, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3271
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Secure protocols for external-facing authentication are provided for both user templates stored on their devices and the biometric measurement captured by external sensors of an access device. The protocols provide different levels of security, ranging from passive security with some leakage to active security with no leakage. A packing technique is also provided. Zero-knowledge techniques are used during enrollment to validate a norm of user templates and knowledge of the plaintext biometric template. Once enrolled, the verifier can sign the encrypted template for use in a later matching phase with an access device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.