Abstract: The present invention relates to a method of processing a transaction sent from a proof entity (1) connected to a verification entity (2); the proof entity (1) having at least one secret key and a candidate authentication data, the verification entity (2) having the hash value of a reference authentication data; the method comprising the steps of: (a) generation by data processing means (11) of the proof entity (1) of: a signature of the proof entity (1) from said secret key; a zero-knowledge proof of the fact that the candidate authentication data and the reference authentication data match; (b) transmission to the verification entity (2) of transaction data comprising at least: said signature of the proof entity (1); said zero-knowledge proof; (c) verification by the data processing means (21) of the verification entity (2) that said signature of the proof entity (1) and the zero-knowledge proof are valid; (d) processing said transaction.

Abstract: A method for strong authentication of an individual by a server and a connected client device, the client device having a candidate biometric data of the individual and an image from an identity document representing at least one photograph of the individual and one optical reader data visible on the identity document. A cryptographic footprint includes extracting, by analysis of the acquired image and the optical reader data, calculating a first data decoded by application of a decoding process to the candidate information and to a first encoded data, such that the first decoded data matches first random data if the candidate information matches a reference information representative of the appearance of the photograph, verifying that a cryptographic footprint of a first concatenation of the extracted optical reader data and the decoded data coincides with the first cryptographic footprint, and a reference biometric data and the candidate biometric data match.

Abstract: A method of authenticating an identity document based on an extraction, by analysis of an image acquired of the identity document, of candidate information representative of the appearance of a photograph such as depicted in the acquired image and optically readable data as depicted in the acquired image.

Abstract: The invention relates to a method for enrolling data in order to verify the authenticity of a security datum, the method comprising implementing by data processing means of a server the steps of: obtaining a reference security datum, generating a first encoded datum by applying to the reference security datum an obfuscated fuzzy Hamming distance encoding procedure, determining from the reference security datum, a plurality of derived data of the reference security datum, generating a first random datum, and determining a second encoded datum such that a variable point comparison predicate parameterized by the second encoded datum and the first random datum is true when said variable point has as coordinates said derived data, storing on a data storage means of the server at least said first and second encoded data. The invention also relates to a verification method and a server for this purpose.

Abstract: The present invention comprises an enrolment method comprising steps of: acquisition (100) of an image showing a photograph itself showing an individual, extraction (102), from the image of a characteristic of the image other than a biometric model, obtaining (104) personal data of the individual other than by the image-processing algorithm, generation (106) of a reference datum (W) from the characteristic of the image and the obtained personal data, calculation (108) of an encoded datum (s) by application of an encoding procedure to the reference datum (W) and to a random datum (c), calculation (110) of a hash (h(c) of the random datum, storage (112) in a database of the datum encoded (s) in association with the hash. The invention also comprises an identity-control method using such stored data.

Abstract: The invention proposes a method for registering data from an individual's identity document (1), the method being characterized in that it comprises implementing by data processing means (21) of a server (2) the following steps: (A) Receipt of a photograph of said individual visible on said identity document (1), an optical reading data element of the identity document (1), and at least one personal data element of said individual; (B) Extraction by analysis of said photograph from reference information representative of the appearance of said photograph; (C) Generation of a random string, calculation of an encoded data element by applying an encoding procedure to said reference information representative of the appearance of said photograph and said random string; (D) Storage on the server (2) data storage means (22) of: Said encoded data element; A cryptographic imprint of a first concatenation of the optical reading data element of the identity document (1) and the random string; An encryption with a c

Abstract: The present invention relates to a method of processing a transaction sent from a proof entity (1) connected to a verification entity (2); the proof entity (1) having at least one secret key and a candidate authentication data, the verification entity (2) having the hash value of a reference authentication data; the method comprising the steps of: (a) generation by data processing means (11) of the proof entity (1) of: a signature of the proof entity (1) from said secret key; a zero-knowledge proof of the fact that the candidate authentication data and the reference authentication data match; (b) transmission to the verification entity (2) of transaction data comprising at least: said signature of the proof entity (1); said zero-knowledge proof; (c) verification by the data processing means (21) of the verification entity (2) that said signature of the proof entity (1) and the zero-knowledge proof are valid; (d) processing said transaction.

Abstract: The invention proposes a method for strong authentication of an individual implemented by a server (2) and a connected client device (3); the client device (3) having a candidate biometric data of the individual and an image acquired from an identity document (1) representing at least one photograph of said individual and one optical reader data visible on said identity document (1), and the server (2) having a cryptographic footprint of a first concatenation of said optical reader data of said identity document (1) and of a first random data, the so-called cryptographic footprint; comprises the implementation of the steps of; (B) Extraction, by analysis of said acquired image of said identity document (1) of a candidate information representative of the appearance of said photograph as depicted in the acquired image; and of said optical reader data as depicted in the acquired image; (c) Calculation of a first data decoded by application of a decoding process to said candidate information representative of

Abstract: The invention proposes a method for registering data from an individual's identity document (1), the method being characterized in that it comprises implementing by data processing means (21) of a server (2) the following steps: (A) Receipt of a photograph of said individual visible on said identity document (1), an optical reading data element of the identity document (1), and at least one personal data element of said individual; (B) Extraction by analysis of said photograph from reference information representative of the appearance of said photograph; (C) Generation of a random string, calculation of an encoded data element by applying an encoding procedure to said reference information representative of the appearance of said photograph and said random string; (D) Storage on the server (2) data storage means (22) of: Said encoded data element; A cryptographic imprint of a first concatenation of the optical reading data element of the identity document (1) and the random string; An encryption with a

Abstract: The invention proposes a method of authenticating an identity document (1) implemented by a server (2) and a client device (3) that are connected; comprising the implementation of steps of: (b) Extraction, by analysis of an image acquired of said identity document (1), of candidate information representative of the appearance of a photograph such as depicted in the acquired image and optically readable data as depicted in the acquired image; (c) Calculation of a first decoded data by application of a decoding process to said candidate information representative of the appearance of said photograph and to first encoded data, such that said first decoded data corresponds to a first random data if said candidate information representative of the appearance of said photograph matches reference information representative of the appearance of said photograph, and a cryptographic footprint of a first concatenation of the extracted optically readable data and the first decoded data; (d) generation of a zero-knowle

Abstract: The present invention comprises an enrolment method comprising steps of: acquisition (100) of an image showing a photograph itself showing an individual, extraction (102), from the image of a characteristic of the image other than a biometric model, obtaining (104) personal data of the individual other than by the image-processing algorithm, generation (106) of a reference datum (W) from the characteristic of the image and the obtained personal data, calculation (108) of an encoded datum (s) by application of an encoding procedure to the reference datum (W) and to a random datum (c), calculation (110) of a hash (h(c) of the random datum, storage (112) in a database of the datum encoded (s) in association with the hash. The invention also comprises an identity-control method using such stored data.