Detecting compromised ballots

Details Detecting compromised ballots Detecting compromised ballots

H - Electricity

04

L

H04L 9/00 (2006.01) H04L 9/30 (2006.01) H04L 9/32 (2006.01)

Patent

CA 2439093

A facility for transmitting a ballot choice selected by a voter (301) is described. The facility encrypts the ballot choice (302) with a first secret known only to the client to generate a first encrypted ballot component. The facility also encrypts the ballot choice with a second secret known only to the client (303), the second secret chosen independently of the first secret, to generate a second encry pted ballot component. The facility then generates a proof (304) demonstrating that the first and second encrypted ballot components are encrypted from the same ballot choice. The facility sends the first and second encrypted ballot components and the proof (311) to a vote collection computer system.

L'invention concerne une installation permettant de transmettre un choix de bulletin de vote sélectionné par un électeur. Cette installation permet de coder le choix de bulletin de vote avec un premier secret, connu seulement du client, destiné à générer un premier composant de bulletin de vote codé. Cette installation permet également de coder le choix d'un bulletin de vote avec un second secret connu seulement du client, le second secret étant choisi indépendamment du premier secret, pour générer un second composant de bulletin de vote codé. L'installation génère ensuite une preuve démontrant que le premier et le second composant de bulletin de vote codé sont codés à partir du même choix de bulletin. L'installation envoie le premier et le second composant de bulletin de vote codé et la preuve à un système informatique de recueillement de votes.

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