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1. WO2020136319 - METHOD AND SYSTEM FOR ELECTRONIC VOTING

Publication Number WO/2020/136319
Publication Date 02.07.2020
International Application No. PCT/FR2019/053113
International Filing Date 17.12.2019
IPC
H04L 9/32 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9Arrangements for secret or secure communication
32including means for verifying the identity or authority of a user of the system
H04L 9/08 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9Arrangements for secret or secure communication
08Key distribution
G07C 13/00 2006.1
GPHYSICS
07CHECKING-DEVICES
CTIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
13Voting apparatus
CPC
G07C 13/00
GPHYSICS
07CHECKING-DEVICES
CTIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
13Voting apparatus
H04L 2209/42
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
2209Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
42Anonymization, e.g. involving pseudonyms
H04L 2209/463
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
2209Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
46Secure multiparty computation, e.g. millionaire problem
463Electronic voting
H04L 9/085
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9Cryptographic mechanisms or cryptographic; arrangements for secret or secure communication
08Key distribution ; or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
0816Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
085Secret sharing or secret splitting, e.g. threshold schemes
H04L 9/3255
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9Cryptographic mechanisms or cryptographic; arrangements for secret or secure communication
32including means for verifying the identity or authority of a user of the system ; or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
3247involving digital signatures
3255using group based signatures, e.g. ring or threshold signatures
Applicants
  • ORANGE [FR]/[FR]
Inventors
  • TRAORE, Jacques
  • DESMOULINS, Nicolas
  • ODRIOSOLO, Guillaume
  • OUOROU, Adam
Priority Data
187411424.12.2018FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) METHOD AND SYSTEM FOR ELECTRONIC VOTING
(FR) PROCÉDÉ ET SYSTÈME DE VOTE ÉLECTRONIQUE
Abstract
(EN)
In this method and in this system for electronic voting, use is made of a method for preparing a ballot, comprising: - a step (PS2, PS4) of generation, by each module of a plurality of assessor modules (M i ) of a virtual polling station (BVV), of a private partial decryption key (Formula (I)) for at least one threshold encryption algorithm; - a step (PS6, PS8) of generation of a public key (Formula (II)) for said encryption algorithm and of the corresponding private key (Formula (III)); - a step of calculation, for at least one electing entity (Vi) authorized to take part in the ballot, of a public value (g s ) from a key pair ((SK O , P O ), (SK A , P A )) of a traceable anonymous signature algorithm (SigA 1 , SigA 2 ), said public value being intended to be used by said electing entity (V i ) in association with a private key (X i ) of said electing entity (V i ) in order to generate an anonymous public key (Formula (IV)), said private key (X i ) being intended to be used by said electing entity (V i ) to calculate at least one signature (S i ) in the context of the ballot, the anonymity of a signature obtained in this way being able to be revoked only by a trusted entity (O,A), said electing entity (V i ) being configured so as to obtain (PS34) its said anonymous public key (Formula (IV)) blindly.
(FR)
Dans ce procédé et dans ce système de vote électronique, on utilise un procédé de préparation d'un scrutin comportant : - une étape (PS2, PS4) de génération, par chaque module d'une pluralité de modules assesseurs (Mi) d'un bureau de vote virtuel (BVV), d'une clé privée (Formula (I)) de déchiffrement partiel pour au moins un algorithme de chiffrement à seuil; - une étape (PS6, PS8) de génération d'une clé publique (Formula (II)) pour ledit algorithme de chiffrement et de la clé privée correspondante (Formula (III)); - une étape de calcul, pour au moins une entité électeur (Vi) autorisée à participer au scrutin, d'une valeur publique (gs) à partir d'une paire de clés ((SKO, PO), (SKA, PA)) d'un algorithme de signatures anonymes traça blés (SigA1, SigA2), ladite valeur publique étant destinée à être utilisée par ladite entité électeur (Vi) en association avec une clé privée (Xi) de ladite entité électeur (Vi) pour générer une clé publique anonyme (Formula (IV)), ladite clé privée (Xi) étant destinée à être utilisée par ladite entité électeur (Vi) pour calculer au moins une signature (Si) dans le cadre du scrutin, l'anonymat d'une signature ainsi obtenue ne pouvant être révoqué que par une entité de confiance (O,A), ladite entité électeur (Vi) étant configurée pour obtenir (PS34) sa dite clé publique anonyme (Formula (IV)) de manière aveugle.
Also published as
Latest bibliographic data on file with the International Bureau