Physical Unclonable Functions Having Magnetic Particles

a technology of magnetic particles and functions, applied in the field of physical unclonable functions, can solve the problems of counterfeit printer supplies, such as toner bottles, affecting the performance of counterfeit supplies, and affecting the performance of counterfeit printers,

Inactive Publication Date: 2017-11-30
LEXMARK INT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The system effectively prevents counterfeiting by ensuring that the unique distribution and alignment of magnetic and non-magnetic particles are difficult to replicate, thus enhancing the security and authenticity verification of printer supplies.

Problems solved by technology

Counterfeit printer supplies, such as toner bottles, are a problem for consumers.
Counterfeit supplies may perform poorly and may damage printers.
Ideally, a PUF cannot be identically replicated and thus is difficult to counterfeit.

Method used

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  • Physical Unclonable Functions Having Magnetic Particles
  • Physical Unclonable Functions Having Magnetic Particles
  • Physical Unclonable Functions Having Magnetic Particles

Examples

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Embodiment Construction

[0021]In the following description, reference is made to the accompanying drawings where like numerals represent like elements. The embodiments are described in sufficient detail to enable those skilled in the art to practice the present disclosure. It is to be understood that other embodiments may be utilized and that process, electrical, and mechanical changes, etc., may be made without departing from the scope of the present disclosure. Examples merely typify possible variations. Portions and features of some embodiments may be included in or substituted for those of others. The following description, therefore, is not to be taken in a limiting sense and the scope of the present disclosure is defined only by the appended claims and their equivalents.

[0022]Referring to the drawings and particularly to FIG. 1, there is shown a block diagram depiction of an imaging system 50 according to one example embodiment. Imaging system 50 includes an image forming device 100 and a computer 60...

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Abstract

A physical unclonable function (PUF) apparatus having magnetic particles is disclosed. The magnetic field data and the image view of the magnetic particles in the PUF apparatus are difficult to counterfeit. A PUF apparatus may be incorporated into a user-replaceable supply item for an imaging device. Further, a PUF reader may be incorporated into an imaging device to read the PUF. Other systems are disclosed.

Description

CROSS REFERENCES TO RELATED APPLICATIONS[0001]This application claims priority and benefit as a continuation application of U.S. patent application Ser. No. 14 / 879,323, entitled “Rotating Magnetic Measurements of Physical Unclonable Functions,” having a filing date of Oct. 9, 2015.BACKGROUND1. Field of the Disclosure[0002]The present disclosure relates generally to anti-counterfeit systems and more particularly to physical unclonable functions.2. Description of the Related Art[0003]Counterfeit printer supplies, such as toner bottles, are a problem for consumers. Counterfeit supplies may perform poorly and may damage printers. Printer manufacturers use authentication systems to deter counterfeiters. Physical unclonable functions (PUF) are a type of authentication system that implements a physical one-way function. Ideally, a PUF cannot be identically replicated and thus is difficult to counterfeit. Thus, it is advantageous to maximize the difficulty of replicating a PUF to deter coun...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): G06F17/28
CPCG06F17/289G11C7/24H04L9/3278G06F40/58G11C11/14B41J2/17543H01F1/0578Y10T428/32G11B5/00
InventorBOOTH, JAMES RONALDCANNON, ROGER STEVENDENTON, GARY ALLENDRUMMOND, JAMES PAULKILLEEN, KELLY ANN
OwnerLEXMARK INT INC