{"id":29401,"date":"2024-06-21T07:41:07","date_gmt":"2024-06-21T07:41:07","guid":{"rendered":"https:\/\/direc.dk\/forskere-har-skabt-sikre-digitale-stemmebokse-men-vil-vaelgerne-stole-paa-blockchain\/"},"modified":"2024-12-13T14:55:37","modified_gmt":"2024-12-13T14:55:37","slug":"forskere-har-skabt-sikre-digitale-stemmebokse-men-vil-vaelgerne-stole-paa-blockchain","status":"publish","type":"post","link":"https:\/\/direc.dk\/da\/forskere-har-skabt-sikre-digitale-stemmebokse-men-vil-vaelgerne-stole-paa-blockchain\/","title":{"rendered":"Forskere har skabt sikre digitale stemmebokse \u2013 men vil v\u00e6lgerne stole p\u00e5 blockchain?"},"content":{"rendered":"\t\t
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\n\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tTil nyheder<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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21. juni 2024<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Forskere har skabt sikre digitale stemmebokse \u2013 men vil v\u00e6lgerne stole p\u00e5 blockchain? <\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Forskere p\u00e5 Aarhus Universitet og Lars Seier Christensens Concordium har for f\u00f8rste gang i historien bevist sikkerheden af blockchain-software, som kan bruges til at afholde sikre valghandlinger online. Nu handler det om at skabe tillid til teknologien. <\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Foto: Institut for Datalogi, Aarhus Universitet. Fra venstre: Bas Spitters, Benjamin Salling Hvass, Lasse Letager Hansen, Eske Hoy Nielsen<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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2024 er et valg\u00e5r af historiske dimensioner. Halvdelen af verdens befolkning afgiver deres stemme til politiske valg. Men i en tid med geopolitiske sp\u00e6ndinger og h\u00f8jteknologiske landvindinger er der grund til bekymring for, om stemmer opt\u00e6lles korrekt, og om magten fordeles uden indblanding af udefrakommende kr\u00e6fter.<\/p>\n

S\u00e5 hvordan sikrer man sig, at vigtige valg bliver s\u00e5 sikre som muligt. Hvad enten det g\u00e6lder valget af formanden for skakklubben eller pr\u00e6sidenten i USA? Og kan det g\u00f8res online?<\/p>\n

Ved valghandlinger er der brug for en database. En blockchain er en meget sikker database baseret p\u00e5 kryptografi, s\u00e5 den kan v\u00e6re en central del af svaret. Derfor modtog Aarhus Universitet og Alexandra Instituttet i 2023 1,8 millioner kroner af DIREC til projektet Verified Voting Protocols and Blockchains. Projektet skulle gennemteste de krypterede protokoller, som i fremtiden skal v\u00e6re rygraden i krypterede valghandlinger, s\u00e5 sikre online-valg kan blive en realitet.<\/p>\n

Bas Spitters, lektor p\u00e5 Aarhus Universitet og leder af Concordium Blockchain Research Center ved Aarhus Universitet (CoBRA), leder projektet, som snart n\u00e6rmer sig sin afslutning. Sammen med Ph.D-studerende Lasse Letager Hansen og Eske Hoy Nielsen kan han bevise matematisk, at blockchain-protokollen OpenVoteNetwork er korrekt implementeret og krypteret i en s\u00e5dan grad, at den kan bruges ved valghandlinger. Det er f\u00f8rste gang, at en blockchain-protokol og dens implementering i software er blevet matematisk sikret og kontrolleret.<\/p>\n

\u201dVi bruger alle best-practices inden for kryptografi og programmeringsprog til at bevise, at protokollen er sikker. Derfor kan vi nu sige, at protokollens sikkerhed er fuldst\u00e6ndig matematisk bevist,\u201d siger Bas Spitters.<\/p>\n

Kan h\u00f8jne valgsikkerhed i alle dele af samfundet<\/h5>\n

I en tid, hvor digital selvbetjening er blevet normal praksis i det offentlige, st\u00e5r fysiske stemmesedler stadig tilbage som en urokkelig monolit. Men i de senere \u00e5r er der opst\u00e5et stor interesse for internetbaseret afstemning blandt valgkommissioner over hele verden.<\/p>\n

Lande som Schweiz, Estland, Brasilien og Indien eksperimenterer alle med parlamentsvalg online. Men l\u00f8sningen er ogs\u00e5 h\u00f8jst relevant ved valg i kommuner, virksomheder eller p\u00e5 universiteter, som i dag sj\u00e6ldent kan prale af et h\u00f8jt sikkerhedsniveau online.<\/p>\n

Problemet er, at mange internetafstemninger i dag er fejlbeh\u00e6ftede, fordi sikkerheden ikke kan bevises. Derfor er de s\u00e5rbare over udefrakommende indblanding \u2013 og v\u00e6lgerne har ingen anelse om, om deres stemme er blevet talt med. Det samme g\u00e6lder eksempelvis ved brevafstemninger, som bl.a. Frankrig eksperimenterer med at kunne afholde online.<\/p>\n

\u201cHvis du skal brevstemme, skal du stemme lang tid i forvejen, og derfor mister du en stor del af den politiske debat. Du er ogs\u00e5 afh\u00e6ngig af sikkerheden i posttjenesten og alle de efterf\u00f8lgende led. Men med en sikker online protokol, der lever op til de h\u00f8jeste standarder, kan du stemme p\u00e5 dagen via internettet og ovenik\u00f8bet f\u00e5 et bevis for, at din stemme er talt med,\u201d siger Bas Spitters.<\/p>\n

Tillid fra industrien<\/h5>\n

Projektet Verified Voting Protocols and Blockchains er et samarbejde mellem Aarhus Universitet og Alexandra Instituttet, men projektet v\u00e6kker ogs\u00e5 interesse i industrien.<\/p>\n

Den schweiziske blockchain-virksomhed Concordium – med danske Lars Seier Christensen som stifter og bestyrelsesformand – er industripartner p\u00e5 projektet og \u00f8nsker selv at benytte protokollen til afstemninger internt i virksomheden. Sammen med AU og Benjamin Salling Hvass fra Alexandra Instituttet har forskerne integreret et verificeret kryptografisk bibliotek i Microsofts valg-software ElectionGuard, som nu kan bruges af Concordium.<\/p>\n

Med det matematiske bevis i hus kan softwaren hurtigt tilpasses andre valgsituationer end den hos Concordium. Hvorvidt den brede offentlighed kommer til at stemme p\u00e5 deres politiske kandidater online, er kun et sp\u00f8rgsm\u00e5l om tillid, forklarer Daniel Tschudi, Senior Researcher hos Concordium:<\/p>\n

\u201cStemmesedler er nemme at stole p\u00e5, fordi vi tror p\u00e5, at embedsm\u00e6ndene og valgvagterne varetager sikkerheden. Det er sv\u00e6rere at stole p\u00e5 ny teknologi, selvom det er matematisk bevist, at det er sikkert. N\u00e5r alt kommer til alt, er det et sp\u00f8rgsm\u00e5l om at opbygge tillid til teknologien og til de standarder for sikkerhed, som forskere har udviklet og testet.\u201d<\/p>\n

Det er h\u00e5bet, at projektet kan p\u00e5virke minimumskravene til sikkerheden ved online-afstemninger. Og Daniel Tschudi er ikke i tvivl om, at forskernes bedrift vil sprede sig som ringe i vandet:<\/p>\n

\u201cN\u00e5r protokollen er korrekt verificeret og certificeret til de h\u00f8jeste standarder, kan den bruges til valghandlinger overalt i samfundet,\u201d slutter han.
\nProjektet Verified Voting Protocols and Blockchains afsluttes i 2025. L\u00e6s mere om projektet her<\/a>.<\/p>\n

Denne nyhed blev bragt i ITWatch den 18. juni 2024<\/em><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

21. juni 2024<\/b>
\nForskere p\u00e5 Aarhus Universitet og Lars Seier Christensens Concordium har for f\u00f8rste gang i historien bevist sikkerheden af blockchain-software, som kan bruges til at afholde sikre valghandlinger online. Nu handler det om at skabe tillid til teknologien. <\/p>\n","protected":false},"author":3,"featured_media":29394,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[178,31],"tags":[153],"class_list":["post-29401","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cybersecurity-da","category-nyheder","tag-p37a-da"],"yoast_head":"\nForskere har skabt sikre digitale stemmebokse \u2013 men vil v\u00e6lgerne stole p\u00e5 blockchain? - DIREC<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/direc.dk\/da\/forskere-har-skabt-sikre-digitale-stemmebokse-men-vil-vaelgerne-stole-paa-blockchain\/\" \/>\n<meta property=\"og:locale\" content=\"da_DK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Forskere har skabt sikre digitale stemmebokse \u2013 men vil v\u00e6lgerne stole p\u00e5 blockchain? - DIREC\" \/>\n<meta property=\"og:description\" content=\"21. juni 2024 Forskere p\u00e5 Aarhus Universitet og Lars Seier Christensens Concordium har for f\u00f8rste gang i historien bevist sikkerheden af blockchain-software, som kan bruges til at afholde sikre valghandlinger online. 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