FR2977349A3 - Authentication method for verifying authenticity of e.g. document, involves carrying out determination of three-dimensional position of acquisition unit and acquisition of image to establish subsequent description of authentication device - Google Patents

Authentication method for verifying authenticity of e.g. document, involves carrying out determination of three-dimensional position of acquisition unit and acquisition of image to establish subsequent description of authentication device Download PDF

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Publication number
FR2977349A3
FR2977349A3 FR1102012A FR1102012A FR2977349A3 FR 2977349 A3 FR2977349 A3 FR 2977349A3 FR 1102012 A FR1102012 A FR 1102012A FR 1102012 A FR1102012 A FR 1102012A FR 2977349 A3 FR2977349 A3 FR 2977349A3
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France
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description
authentication device
acquisition
authentication
authentication method
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FR1102012A
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French (fr)
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Franck Guigan
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Individual
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Individual
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Priority to FR1102012A priority Critical patent/FR2977349A3/en
Priority to US14/110,061 priority patent/US9058535B2/en
Priority to PCT/FR2012/000096 priority patent/WO2012136902A1/en
Priority to EP12712293.5A priority patent/EP2695147B1/en
Publication of FR2977349A3 publication Critical patent/FR2977349A3/en
Withdrawn legal-status Critical Current

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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/08Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means
    • G06K19/083Constructional details
    • G06K19/086Constructional details with markings consisting of randomly placed or oriented elements, the randomness of the elements being useable for generating a unique identifying signature of the record carrier, e.g. randomly placed magnetic fibers or magnetic particles in the body of a credit card

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Image Input (AREA)

Abstract

The method involves determining three-dimensional position of an acquisition unit (3) i.e. webcam, with respect to an authentication device by a positioning unit (7). An image is acquired when the acquisition unit is placed at proximity of an original view point. The image is acquired from a view point different from the original point or under illumination different from illumination used for acquisition to establish original description of the device. The position determination and the image acquisition are carried out to establish subsequent description of the device. Independent claims are also included for the following: (1) an authentication device (2) a method for fabricating an authentication device.

Description

Procédé d'acquisition d'un code baves 3D Domaine technique Les codes barres 3D sont des codes barres qui présentent la particularité de présenter un aspect différent selon le point de vue sous lequel on les regarde. De tels codes sont décrits dans les demandes FR/11/01010, FR/11/01027, FR/11/01124, FR/10-01244, FR/10-01245 et FR/10-01726 du même auteur. La présente invention est un perfectionnement des procédés d'authentifications décrits dans ces documents. Process for acquiring a 3D bave code Technical field 3D barcodes are barcodes that have the particularity of having a different appearance depending on the point of view under which they are viewed. Such codes are described in applications FR / 11/01010, FR / 11/01027, FR / 11/01124, FR / 10-01244, FR / 10-01245 and FR / 10-01726 by the same author. The present invention is an improvement of the authentication methods described in these documents.

Art antérieur Dans rait antérieur, la procédure d'acquisition d'un dispositif d'authentification permettant d'établir une description dite ultérieure se fait par une prise de vue acquise avec un moyen d'acquisition connu, et cette acquisition nécessite de placer ledit moyen d'acquisition à une position particulière dite point de vue original dudit moyen d'acquisition, laquelle est déterminée par référence audit dispositif d'authentification. 11 est en effet indispensable que l'emplacement à partir duquel on acquiert une vue dudit dispositif d'authentification soit le même que celui utilisé lorsqu'on a acquis la signature dite originale dudit dispositif d'authentification, signature à laquelle on souhaite comparer la signature dite ultérieure résultant de la procédure d'acquisition. PRIOR ART In the prior art, the procedure for acquiring an authentication device making it possible to establish a so-called subsequent description is done by taking a picture acquired with a known acquisition means, and this acquisition requires placing said means acquisition at a particular position called original point of view of said acquisition means, which is determined by reference to said authentication device. It is indeed essential that the location from which a view of said authentication device is acquired is the same as that used when the so-called original signature of said authentication device has been acquired, a signature to which the signature is to be compared. so-called after the acquisition procedure.

Le problème posé Le problème est que le positionnement du moyen d'acquisition par rapport au dispositif d'authentification est complexe, et prend sensiblement plus de temps que l'acquisition d'un codes barres 2d comme un Datamatrix classique, laquelle peut être faite depuis un grand nombre d'emplacements. The problem posed The problem is that the positioning of the acquisition means with respect to the authentication device is complex, and takes substantially more time than the acquisition of a 2d barcode as a conventional Datamatrix, which can be done since a lot of locations.

L'objet de la présente invention est de réduire ce temps de positionnement, voire de le supprimer complètement, tout en améliorant la sécurité du procédé d'authentification. Exposé de l'invention La présente invention est un procédé d'authentification consistant : à établir une description d'un dispositif d'authentification comportant des sous ensembles dits "dispositifs élémentaires" munis chacun d'éléments dits perturbateurs, lesdits sous-ensembles réfléchissant et/ou transmettant la lumière de façons sensiblement différentes selon le point de vue sous lequel on les regarde, à partir d'une vue acquise avec un moyen d'acquisition dudit dispositif d'authentification, à déterminer par des moyens connus la position dudit moyen d'acquisition par rapport 35 audit dispositif d'authentification lors de cette acquisition, caractérisé par le fait que : l'on enregistre l'association de ladite description avec la position dans laquelle se trouve ledit moyen d'acquisition par référence audit dispositif d'authentification lors de racquisition considérée et que ladite description constitue alors une description dite originale dudit dispositif d'authentification, permettant de comparer une description ultérieure d'une vue acquise avec ledit moyen d'acquisition dudit dispositif d'authentification à partir du même point de vue par rapport audit dispositif d'authentification. Description détaillée de l'invention Dans les documents FR/11/01010, FR/11/01027, FR/11/01124, FR/10-01244, FR/10-01245, FR/10-01726, FR/10-01900 et FR/10-01986 du même auteur, la procédure d'authentification fait toujours référence à une description dite originale correspondant à une vue prise depuis un point de vue dit original défini par référence audit dispositif d'authentification, description à laquelle on compare une description dite ultérieure d'une vue acquise avec un moyen d'acquisition d'un dispositif d'authentification, laquelle doit aussi correspondre à une vue prise depuis ledit point de vue original. Il y a donc une position à laquelle on doit obligatoirement se placer pour que la comparaison soit valable, et l'opération prend un peu de temps lorsque ledit moyen d'acquisition est tenu à la main, ce qui est le plus souvent le cas avec un téléphone portable. En multipliant les couples [description a, position a], [description b, position b] et suivants, on facilite l'acquisition ultérieure d'un dispositif d'authentification, puisque la comparaison entre une description dite ultérieure et une description dite primaire correspondant toutes les deux à la même position peut se faire dès que le dispositif d'authentification se trouve dans une position pour laquelle existe une description. Avantageusement, les positions a, b et suivantes pour lesquelles il existe une description correspondante a, b et suivantes sont mémorisées dans la mémoire dudit moyen d'acquisition, pour qu'il ne soit pas nécessaire d'accéder à la base de données contenant une association entre une position et une description dès le début du processus d'authentification. On peut ainsi n'accéder à cette base de données que lorsque ron a acquis une vue du dispositif d'authentification depuis une position pour laquelle on sait qu'une description existe. Avantageusement, de tels couples [description a , position a], [description b, position b] et suivants peuvent être créés et mis en mémoire pendant toute phase d'approche d'une position valide, mais il est également possible d'ajouter manuellement des positions valides en déplaçant le moyen d'acquisition tout en acquérant des vues dudit dispositif d'authentification. The object of the present invention is to reduce this positioning time, or even to completely eliminate it, while improving the security of the authentication method. DISCLOSURE OF THE INVENTION The present invention is an authentication method consisting in: establishing a description of an authentication device comprising subsets called "elementary devices" each provided with so-called disruptive elements, said subsets reflecting and / or transmitting the light in substantially different ways according to the point of view under which one looks at them, from a view acquired with a means of acquisition of said authentication device, to determine by known means the position of said means of acquisition in relation to said authentication device during this acquisition, characterized in that: the association of said description with the position in which said acquisition means is located by reference to said authentication device when the search is considered and that said description then constitutes a so-called original description of said device authentication, for comparing a subsequent description of an acquired view with said acquisition means of said authentication device from the same point of view with respect to said authentication device. DETAILED DESCRIPTION OF THE INVENTION In documents FR / 11/01010, FR / 11/01027, FR / 11/01124, FR / 10-01244, FR / 10-01245, FR / 10-01726, FR / 10-01900 and FR / 10-01986 by the same author, the authentication procedure always refers to a so-called original description corresponding to a view taken from an original said point of view defined by reference to said authentication device, a description to which a comparison is compared so-called subsequent description of a view acquired with a means of acquisition of an authentication device, which must also correspond to a view taken from said original point of view. There is therefore a position that must necessarily be placed for the comparison to be valid, and the operation takes a little time when said means of acquisition is held by hand, which is most often the case with a mobile phone. By multiplying the pairs [description a, position a], [description b, position b] and following, it facilitates the subsequent acquisition of an authentication device, since the comparison between a so-called subsequent description and a corresponding primary description both at the same position can be done as soon as the authentication device is in a position for which there is a description. Advantageously, the positions a, b and following for which there is a corresponding description a, b and following are stored in the memory of said acquisition means, so that it is not necessary to access the database containing a association between a position and a description from the beginning of the authentication process. It is thus possible to access this database only when one has acquired a view of the authentication device from a position for which it is known that a description exists. Advantageously, such pairs [description a, position a], [description b, position b] and following can be created and stored during any approach phase of a valid position, but it is also possible to manually add valid positions by moving the acquisition means while acquiring views of said authentication device.

La présente invention permet aussi de dispenser l'organisateur du système de la tâche consistant à établir une description dite originale dudit dispositif d'authentification, avant sa mise en service, puisqu'une telle description peut être réalisée par l'utilisateur lorsqu'il a reçu un dispositif d'authentification. The present invention also makes it possible to dispense the organizer of the system with the task of establishing a so-called original description of said authentication device before it is put into service, since such a description can be carried out by the user when he has received an authentication device.

Enfin, un avantage très important de la présente invention est d'augmenter la sécurité du procédé d'authentification, puisque l'on peut très bien demander à l'utilisateur de vérifier successivement plusieurs couples [description a , position a], [description b, position b] et suivants pour authentifier un dispositif d'authentification. Dans le cas où le dispositif d'authentification reflète la lumière, il est nécessaire de prendre deux vues depuis chaque position, l'une lorsque ledit dispositif d'authentification est éclairé par l'éclairage ambiant et l'autre lorsqu'il est éclairé par une source lumineuse située à un emplacement dit emplacement de la lumière. Avantageusement, la lumière est solidaire du dispositif d'authentification, et bouge donc avec lui. Un avantage supplémentaire de la présente invention est que la description originale avec laquelle est comparée une description dite ultérieure peut être établie à partir d'une vue acquise avec le même moyen d'acquisition. Cela supprime les erreurs pouvant être dues à la différence de perception des moyens d'acquisition différents. Cela ouvre aussi l'application à l'utilisation de moyens d'acquisition très divers, et en particulier ceux dont les emplacements de la source lumineuse est située à une distance particulière de l'objectif de la caméra. Applications Elles concernent toutes les applications visées par les demandes FR/11/01010, FR/11/01027, FR/11/01124, FR/10-01244, FR/10-01245, FR/10-01726, FR/10-01900 et FR/10-01986, c'est à dire la lutte contre la contrefaçon et la fraude documentaire, la transmission sécurisée de données sans croisement de bases de données, l'authentification et le paiement en ligne. Finally, a very important advantage of the present invention is to increase the security of the authentication method, since one can very well ask the user to verify successively several couples [description a, position a], [description b , position b] and following to authenticate an authentication device. In the case where the authentication device reflects light, it is necessary to take two views from each position, one when said authentication device is illuminated by ambient lighting and the other when illuminated by a light source located at a location said location of the light. Advantageously, the light is integral with the authentication device, and therefore moves with it. An additional advantage of the present invention is that the original description with which a so-called subsequent description is compared can be established from a view acquired with the same acquisition means. This removes errors that may be due to the difference in perception of different acquisition means. This also opens the application to the use of very diverse acquisition means, and in particular those whose locations of the light source is located at a particular distance from the lens of the camera. Applications They concern all the applications covered by applications FR / 11/01010, FR / 11/01027, FR / 11/01124, FR / 10-01244, FR / 10-01245, FR / 10-01726, FR / 10- 01900 and FR / 10-01986, ie the fight against counterfeiting and document fraud, the secure transmission of data without cross-referencing databases, authentication and online payment.

Claims (8)

REVENDICATIONS1. Procédé d'authentification consistant - à établir une description d'un dispositif d'authentification comportant des sous ensembles dits "dispositifs élémentaires" munis chacun d'éléments dits perturbateurs, lesdits sous-ensembles réfléchissant et/ou transmettant la lumière de façons sensiblement différentes selon le point de vue sous lequel on les regarde, à partir d'une vue acquise avec un moyen d'acquisition dudit dispositif d'authentification, - à déterminer par des moyens connus la position dudit moyen d'acquisition par rapport audit dispositif d'authentification lors de cette acquisition, caractérisé par le fait que : - l'on enregistre l'association de ladite description avec la position dans laquelle se trouve ledit moyen d'acquisition par référence audit dispositif d'authentification lors de l'acquisition considérée, - et que ladite description constitue alors une description dite originale dudit dispositif d'authentification, permettant de comparer une description ultérieure d'une vue acquise avec ledit moyen d'acquisition dudit dispositif d'authentification à partir du même point de vue par rapport audit dispositif d'authentification. REVENDICATIONS1. Authentication method consisting in - establishing a description of an authentication device comprising subsets called "elementary devices" each provided with so-called disruptive elements, said subsets reflecting and / or transmitting light in substantially different ways according to the point of view under which one looks at them, from a view acquired with a means of acquisition of said authentication device, - to determine by known means the position of said acquisition means with respect to said authentication device during this acquisition, characterized by the fact that: - the association of said description with the position in which said acquisition means are located by reference to said authentication device during the acquisition in question, and that said description then constitutes a so-called original description of said authentication device, making it possible to compare one of the subsequently writing a view acquired with said acquisition means of said authentication device from the same point of view with respect to said authentication device. 2. Procédé d'authentification selon la revendication 1 caractérisé par le fait que la comparaison entre une description dite ultérieure et une description dite primaire correspondant toutes les deux à la même position est faite dès que le dispositif d'authentification se trouve dans une position pour laquelle existe une description. 2. Authentication method according to claim 1 characterized in that the comparison between a so-called subsequent description and a so-called primary description both corresponding to the same position is made as soon as the authentication device is in a position for which is a description. 3. Procédé d'authentification selon la revendication 1 caractérisé par le fait qu'une position pour laquelle il existe une description correspondante est mémorisée dans la mémoire dudit moyen d'acquisition. 3. Authentication method according to claim 1 characterized in that a position for which there is a corresponding description is stored in the memory of said acquisition means. 4. Procédé d'authentification selon la revendication 1 caractérisé par le fait que l'on n'accède à la base de données contenant une association entre une position et une description que lorsque l'on a acquis une vue du dispositif d'authentification depuis une position pour laquelle on sait qu'une description existe. 4. Authentication method according to claim 1, characterized in that the database containing an association between a position and a description is accessed only when a view of the authentication device has been acquired from a position for which we know that a description exists. 5. Procédé d'authentification selon la revendication 1 caractérisé par le fait que des couples [description a , position a], [description b, position b] et suivants sont créés et mis en mémoire pendant toute phase d'approche dudit moyen d'acquisition d'une position valide. 5. Authentication method according to claim 1 characterized in that couples [description a, position a], [description b, position b] and following are created and stored during any approach phase of said means of acquisition of a valid position. 6. Procédé d'authentification selon la revendication 1 caractérisé par le fait que l'on ajoute manuellement un couple [description, position] valide lors d'un déplacement du moyen d'acquisition, en acquérant une vue supplémentaire dudit dispositif d'authentification. 6. Authentication method according to claim 1 characterized in that one manually adds a torque [description, position] valid during a displacement of the acquisition means, acquiring a supplementary view of said authentication device. 7. Procédé d'authentification selon la revendication 1 caractérisé par le fait que l'on vérifie successivement la validité de plusieurs couples [description a , position a], [description b, position b] et suivants pour authentifier un dispositif d'authentification. 7. Authentication method according to claim 1 characterized in that one successively checks the validity of several couples [description a, position a], [description b, position b] and following to authenticate an authentication device. 8. Procédé d'authentification selon la revendication 1 caractérisé par le fait la description 5 originale avec laquelle est comparée une description dite ultérieure est établie à partir d'une vue acquise avec le même moyen d'acquisition. 8. Authentication method according to claim 1 characterized in that the original description with which is compared a so-called subsequent description is established from a view acquired with the same acquisition means.
FR1102012A 2011-04-05 2011-06-29 Authentication method for verifying authenticity of e.g. document, involves carrying out determination of three-dimensional position of acquisition unit and acquisition of image to establish subsequent description of authentication device Withdrawn FR2977349A3 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR1102012A FR2977349A3 (en) 2011-06-29 2011-06-29 Authentication method for verifying authenticity of e.g. document, involves carrying out determination of three-dimensional position of acquisition unit and acquisition of image to establish subsequent description of authentication device
US14/110,061 US9058535B2 (en) 2011-04-05 2012-03-19 Security barcode
PCT/FR2012/000096 WO2012136902A1 (en) 2011-04-05 2012-03-19 Security barcode
EP12712293.5A EP2695147B1 (en) 2011-04-05 2012-03-19 Security barcode

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FR1102012A FR2977349A3 (en) 2011-06-29 2011-06-29 Authentication method for verifying authenticity of e.g. document, involves carrying out determination of three-dimensional position of acquisition unit and acquisition of image to establish subsequent description of authentication device

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FR1102012A Withdrawn FR2977349A3 (en) 2011-04-05 2011-06-29 Authentication method for verifying authenticity of e.g. document, involves carrying out determination of three-dimensional position of acquisition unit and acquisition of image to establish subsequent description of authentication device

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3039306A1 (en) * 2015-07-22 2017-01-27 Guigan Franck Andre-Marie SECURITY MARKING
FR3076931A1 (en) * 2018-01-16 2019-07-19 Franck Guigan METHOD OF AUTHENTICATING A THREE-DIMENSIONAL SIGNATURE
US12067796B2 (en) 2021-04-27 2024-08-20 Onfido Ltd. Method for detecting fraud in documents

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3039306A1 (en) * 2015-07-22 2017-01-27 Guigan Franck Andre-Marie SECURITY MARKING
FR3076931A1 (en) * 2018-01-16 2019-07-19 Franck Guigan METHOD OF AUTHENTICATING A THREE-DIMENSIONAL SIGNATURE
WO2019141915A1 (en) * 2018-01-16 2019-07-25 Franck Guigan Method for authenticating a three-dimensional signature
US11556629B2 (en) 2018-01-16 2023-01-17 Franck Guigan Method for authenticating a three-dimensional signature
US12067796B2 (en) 2021-04-27 2024-08-20 Onfido Ltd. Method for detecting fraud in documents

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