公开(公告)号：WO2023009294A1

公开(公告)日：2023-02-02

申请号：PCT/US2022/036528

申请日：2022-07-08

Applicant: VISA INTERNATIONAL SERVICE ASSOCIATION

Inventor： NAGARAJA, Vinjith ,  XU, Minghua ,  PATEL, Karankumar Hiteshbhai ,  GU, Shengfei ,  PATRANABIS, Sikhar ,  BADRINARAYANAN, Saikrishna ,  MUKHERJEE, Pratyay ,  RINDAL, Peter ,  JIN, Shan

IPC: H04L9/08

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.

公开(公告)号：WO2022178184A1

公开(公告)日：2022-08-25

申请号：PCT/US2022/016876

申请日：2022-02-17

Applicant: VISA INTERNATIONAL SERVICE ASSOCIATION

Inventor： XU, Minghua ,  JIN, Shan

IPC: G06Q20/06 ,  G06Q20/02 ,  G06Q20/40

Abstract: A method is disclosed. The method comprises generating, by sender device or a sender computer associated with a sender, a base token in a token space associated with parameters. The base token can comprise one or more token attributes within the parameters, and an amount. The base token can then be signed, by the sender device or the sender computer, to form a minted token. The method may then include transmitting, by the sender device to a receiver device, a transfer request comprising the minted token.