Invention Grant
- Patent Title: Physical unclonable functions in bank cards or identification cards for security
-
Application No.: US15809081Application Date: 2017-11-10
-
Publication No.: US10566296B2Publication Date: 2020-02-18
- Inventor: Roger Steven Cannon , William Corbett , Gary A. Denton , James Paul Drummond , Kelly Ann Killeen , Carl E. Sullivan
- Applicant: Lexmark International, Inc.
- Applicant Address: US KY Lexington
- Assignee: Lexmark International, Inc.
- Current Assignee: Lexmark International, Inc.
- Current Assignee Address: US KY Lexington
- Main IPC: H04L9/32
- IPC: H04L9/32 ; H01L23/29 ; H01L23/31 ; H01L23/58 ; H01L23/00 ; H01L23/495
Abstract:
In the invention described, magnetic field characteristics of randomly placed magnetized particles are exploited by using the magnetic field fluctuations produced by the particles as measured by a sensor. The magnetized particles generate a complex magnetic field near the surface of an integrated circuit chip on a bank card or identification card that can be used as a “fingerprint.” The positioning and orientation of the magnetized particles is an uncontrolled process, and thus the interaction between the sensor and the particles is complex. The randomness of the magnetic field magnitude and direction near the surface of the material containing the magnetic particles can be used to obtain a unique identifier for an item such as an integrated circuit chip on a bank card or identification card carrying the PUF.
Public/Granted literature
- US20190157219A1 Physical Unclonable Functions in Bank Cards or Identification Cards for Security Public/Granted day:2019-05-23
Information query
