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1. WO2020198082 - MAGNETIC PUF WITH PREDETERMINED INFORMATION LAYER

Publication Number WO/2020/198082
Publication Date 01.10.2020
International Application No. PCT/US2020/024077
International Filing Date 21.03.2020
IPC
G06K 19/08 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
19Record carriers for use with machines and with at least a part designed to carry digital markings
06characterised by the kind of the digital marking, e.g. shape, nature, code
08using markings of different kinds in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means
B41M 3/14 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
3Printing processes to produce particular kinds of printed work, e.g. patterns
14Security printing
G06K 19/00 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
19Record carriers for use with machines and with at least a part designed to carry digital markings
G06K 19/06 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
19Record carriers for use with machines and with at least a part designed to carry digital markings
06characterised by the kind of the digital marking, e.g. shape, nature, code
Applicants
  • LEXMARK INTERNATIONAL, INC. [US]/[US]
Inventors
  • HARDIN, Keith, Bryan
Agents
  • HARRIS, Wendell, W.
Priority Data
16/817,02712.03.2020US
62/822,51022.03.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) MAGNETIC PUF WITH PREDETERMINED INFORMATION LAYER
(FR) PUF MAGNÉTIQUE AVEC COUCHE D'INFORMATIONS PRÉDÉFINIE
Abstract
(EN)
The invention adds a Physical Information Layer ("PIL") to the magnetic particles within a matrix that creates an unclonable physical unclonable function "object." The PIL assists in searching to find the combination that matches a pre-determined enrolled combination with additional information that includes a search index, which limits the range of data required to search in order to find a match in the enrolled database. The index could be a predetermined value that associates the random magnetic profile values to a list of enrolled values in a database. The additional information may include product or general information that needs to be easily communicated to a user of the PUF.
(FR)
L'invention ajoute une couche physique d'informations (" PIL ") aux particules magnétiques à l'intérieur d'une matrice qui crée un " objet " non clonable de fonction physiquement non clonable (PUF). La PIL aide à rechercher la combinaison qui correspond à une combinaison enregistrée prédéfinie avec des informations supplémentaires qui comprennent un indice de recherche, qui limite la plage de données nécessaire à la recherche afin de trouver une correspondance dans la base de données enregistrée. L'indice pourrait être une valeur prédéfinie qui associe les valeurs de profil magnétique aléatoire à une liste de valeurs enregistrées dans une base de données. Les informations supplémentaires peuvent comprendre des informations de produit ou générales qui doivent être facilement communiquées à un utilisateur de la PUF.
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