Visa International Service Association

Shan Jin

Pratyay Mukherjee

Saikrishna Badrinarayanan

Peter Rindal

Minghua Xu

Vinjith Nagaraja

Shengfei Gu

Karankumar Hiteshbhai Patel

Sikhar Patranabis

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.

Distributed private key recovery

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Austin, TX, United States of America

Shan Jin