Dynamic and private security fingerprinting

US11271931B2 · kind B2 · utility

Assignee

• Visa International Service Association · US

Inventors

• Vinjith Nagaraja · Pflugerville, US
• Nagaveera Venkata Su Tavvala · Cedar Park, US
• Jose Rios Trevino · Austin, US
• Vamshi Ramarapu · Austin, US
• Swapneel Mahajan · Cupertino, US
• Joel Trunick · Austin, US
• Shalini Mayor · Foster City, US
• James Myers · Round Rock, US
• Raymond Scott Brammer · West Granby, US
• Ireneusz Pazdzierniak · Foster City, US
• Shashi Velur · Austin, US
• Feng Wang · Sunnyvale, US
• Vincent Hesener · Foster City, US

Key dates

• Filing date: Sep 19, 2019
• Grant date: Mar 8, 2022
• Expiry date: Apr 2, 2040

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L9/3239
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

Techniques for securely generating and using a “fingerprint” for authentication. A server computer receives a first data set from a user device (including a first fuzzy hash of first user data on the user device). The server computer generates a first fingerprint value based on the first data set. The server computer detects an event corresponding to a user in association with the user device. The server computer identifies a baseline fingerprint value (generated based on a baseline fuzzy hash of user data on the user device). The server computer compares the first fingerprint value to the baseline fingerprint value to generate a similarity score. The server computer may determine that the similarity score exceeds a threshold value but does not represent an exact match, and, based on the similarity score, authenticate the user and update the baseline fingerprint value based on the first fingerprint value.