Patent ID: 11943363
Assignee: VISA INTERNATIONAL SERVICE ASSOCIATION
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. A server computer comprising:
a processor; and
a non-transitory computer-readable storage medium having code embodied thereon, the code being configured to cause the processor to:
receive authentication data for a user from a user device including user identification data that identifies the user;
determine a biometric identifier as a random number or string of characters that does not reveal information about the user, to be associated with the authentication data;
transmit the biometric identifier to a second server computer along with a first encrypted biometric template associated with the user;
upon receiving a request for the biometric identifier, transmit, to the user device, the biometric identifier encrypted with an encryption key corresponding to a decryption key, wherein having by the user device the decryption key enables the user device to decrypt the encrypted biometric identifier, wherein the decrypting the encrypted biometric identifier by the user device causes the second server computer to subsequently receive a second encrypted biometric template and the biometric identifier from the user device, wherein the second server computer generates an encrypted match value data file by comparing the first encrypted biometric template and the second encrypted biometric template based on the biometric identifier;
receive the encrypted match value data file;
decrypt the encrypted match value data file to determine a decrypted match value data file; and
determine, from the decrypted match value data file, a match likelihood value.