Invention Grant
- Patent Title: Distributed private key recovery
-
Application No.: US17390649Application Date: 2021-07-30
-
Publication No.: US11991282B2Publication Date: 2024-05-21
- Inventor: Vinjith Nagaraja , Minghua Xu , Karankumar Hiteshbhai Patel , Shengfei Gu , Sikhar Patranabis , Saikrishna Badrinarayanan , Pratyay Mukherjee , Peter Rindal , Shan Jin
- Applicant: Visa International Service Association
- Applicant Address: US CA San Francisco
- Assignee: VISA INTERNATIONAL SERVICE ASSOCIATION
- Current Assignee: VISA INTERNATIONAL SERVICE ASSOCIATION
- Current Assignee Address: US CA San Francisco
- Agency: Kilpatrick Townsend & Stockton LLP
- Main IPC: H04L9/08
- IPC: H04L9/08 ; H04L9/00 ; H04L9/32

Abstract:
A method performed by a user device is disclosed. The method comprising generating a secret and measuring a biometric template of a user operating the user device. The method then generates a plurality of secret shares of the secret and of the biometric template. The user device then transmits the secret shares of the secret and of the biometric template to a plurality of recovery devices. After, the user device may then initiate a recovery of the secret and measure a biometric measurement of the user. Data of the biometric measurement may be transmitted to the plurality of recovery devices, where the recovery devices perform a partial computation. The user device use the plurality of partial computations to determine a match between the biometric template and the biometric measurement. If the two biometrics match, the user device can reconstruct the secret using shares of the secret from the recovery devices.
Public/Granted literature
- US20230050481A1 DISTRIBUTED PRIVATE KEY RECOVERY Public/Granted day:2023-02-16
Information query