METHOD AND DEVICE FOR AUTHENTIFICATION OF A USER

• US 20160148075A1
• Filed: 11/19/2015
• Published: 05/26/2016
• Est. Priority Date: 11/20/2014
• Status: Active Grant

• Current Assignee: IDEMIA France (Advent International Corporation)
• Original Assignee: Oberthur Technologies SA
• Inventors: BARREAU, Cedric, JAVARY, Bruno
• Granted Patent: US 10,157,328 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 21/32 using biometric data, e.g. fingerprints, iris scans or voiceprints
• CPC Class Codes: G06F 2221/2103 Challenge-response
• CPC Class Codes: G06F 2221/2133 Verifying human interaction, e.g., Captcha
• CPC Class Codes: G06V 10/243 by compensating for image skew or non-uniform image deformations
• CPC Class Codes: G06V 40/1365 Matching; Classification
• CPC Class Codes: H04L 63/0861 using biometrical features, e.g. fingerprint, retina-scan cryptographic mechanisms or cryptographic arrangements for entity authentication using biological data H04L9/3231
• CPC Class Codes: H04W 12/06 Authentication
• CPC Class Codes: H04W 12/68 Gesture-dependent or behaviour-dependent
• CPC Class Codes: H04W 88/02 Terminal devices

Abstract

Method of authentication of a user via a terminal including acquisition elements for performing a biometric acquisition, includes: presentation to the acquisition elements by the user of a member to be verified by biometric comparison and triggering by the user a biometric acquisition to obtain an acquisition datum; biometric comparison of the acquisition datum with a prestored reference datum, the user being authenticated if the biometric comparison is positive and not authenticated otherwise, the method further including the following steps: providing the user with elements indicative of a first angle, the user applying a corrective rotation by a second angle so as to match an acquisition datum with the second angle, and in the biometric comparison step the reference datum is matched with the first angle, the biometric comparison being positive if the second angle is substantially equal to the first angle. Device adapted to implement such a method.

Claims

1. Method of authentication of a user (1) by means of a terminal (2) including acquisition means (3) adapted to perform a biometric acquisition, including the following steps:

presentation to the acquisition means (3) by the user (1) of a member (4) to be verified by biometric comparison (8) and triggering by the user (1) of a biometric acquisition in order to obtain an acquisition datum (5),

biometric comparison (8) of the acquisition datum (5) with a prestored reference datum (6), the user (1) being authenticated if the biometric comparison (8) is positive and not authenticated otherwise, wherein the method further includes the following steps;

providing the user (1) with means (7) indicative of a first angle (X),

the user (1) applying a corrective rotation by a second angle (Y) in such a manner as to match an acquisition datum (5) with said second angle (Y),

and in the biometric comparison step (8) the reference datum (6) is matched with the first angle (X), the biometric comparison (8) being positive if the second angle (Y) is substantially equal to the first angle (X).

2. Method according to claim 1, wherein the first angle (X) is non-zero.

3. Method according to claim 1, wherein the first angle X is substantially equal to the second angle Y according to an angular tolerance at least equal to the tolerance of the biometric comparison (8) and at most equal to a tolerance equal to 90°

, preferably equal to 15°

, and more preferably equal to the tolerance of the biometric comparison (8).

4. Method according to claim 1, wherein an acquisition datum (5), respectively a reference datum (6), is matched with an angle (X,Y) in that it is accompanied by said angle (X,Y) or in that it is obtained after application of a rotation by an angle (X,Y).

5. Method according to claim 1, wherein the indicative means (7) are visual and are turned by the first angle (X).

6. Method according to claim 5, wherein the visual indicative means are scrambled in such a manner as to oppose interpretation by an automaton by “

captcha”

type processing.

7. Method according to claim 1, wherein the corrective rotation is applied to the member (4) and/or to the acquisition means (3) and/or to the terminal (2).

8. Method according to claim 7, wherein the acquisition means (3) rotate relative to the terminal (2).

9. Method according to claim 1, further including communicating beforehand to the user (1) a secret necessary for determining the second angle (Y).

10. Method according to claim 9, wherein the secret is a function and in the biometric comparison step (8) the reference datum (6) is matched with the image of the first angle (X) by said function.

11. Method according to claim 10, wherein the function adds a third angle (Z), preferably a multiple of 45°

.

12. Method according to claim 9, wherein the indicative means (7) include a plurality of visual indicative means (7a-c), each of the visual indicative means (7a-c) being indicative of a different first angle (X,Xa-c) and each of the visual indicative means (7a-c) being associated with a different frame of reference, and where the secret is information, such as a frame of reference category, enabling the user (1) to determine a particular frame of reference and in that in the biometric comparison step (8) the reference datum (6) is matched with the first angle (X,Xa-c) associated with said particular frame of reference.

13. Method according to claim 1, wherein the first angle (X) is produced by a random generator, preferably supplied by a secure element.

14. Authentication device including means for implementing the method according to claim 1.

15. Device according to claim 14, wherein the acquisition means (3) rotate relative to the terminal (2) and are adapted to measure the angle of said rotation.