{"id":23,"date":"2026-07-19T21:56:23","date_gmt":"2026-07-20T01:56:23","guid":{"rendered":"https:\/\/nscoesn.ca\/quantum\/"},"modified":"2026-07-20T00:36:34","modified_gmt":"2026-07-20T04:36:34","slug":"quantum","status":"publish","type":"page","link":"https:\/\/nscoesn.ca\/fr\/quantum\/","title":{"rendered":"Quantique"},"content":{"rendered":"<div class=\"wp-block-group alignwide\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"wp-block-paragraph\">Les technologies quantiques changent deux choses \u00e0 la fois : ce qui peut \u00eatre calcul\u00e9, et ce qui peut \u00eatre gard\u00e9 secret. Le Centre suit les deux, car les \u00e9ch\u00e9ances qui comptent pour la s\u00e9curit\u00e9 nationale se fixent maintenant, par des d\u00e9cisions prises bien avant que la technologie ne parvienne \u00e0 maturit\u00e9.<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group alignwide info-grid is-nowrap is-layout-flex wp-container-core-group-is-layout-8f761849 wp-block-group-is-layout-flex\">\n<div class=\"wp-block-group info-card\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<h3 class=\"wp-block-heading\">Informatique quantique<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">Calcul<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Un ordinateur quantique suffisamment puissant briserait une grande partie de la cryptographie \u00e0 cl\u00e9 publique qui prot\u00e8ge aujourd\u2019hui les syst\u00e8mes gouvernementaux et commerciaux. Le risque ne se limite pas \u00e0 l\u2019avenir : un adversaire peut intercepter du trafic chiffr\u00e9 d\u00e8s maintenant et le d\u00e9chiffrer plus tard, une fois la capacit\u00e9 acquise. La planification doit donc commencer avant l\u2019arriv\u00e9e de la machine.<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group info-card\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<h3 class=\"wp-block-heading\">Cryptologie quantique<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">Cryptologie<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Deux r\u00e9ponses se d\u00e9ploient en parall\u00e8le. La cryptographie r\u00e9sistante au quantique remplace les algorithmes vuln\u00e9rables par d\u2019autres r\u00e9put\u00e9s r\u00e9sister aux attaques quantiques, et peut \u00eatre d\u00e9ploy\u00e9e sur les r\u00e9seaux d\u2019aujourd\u2019hui. La distribution quantique de cl\u00e9s utilise les propri\u00e9t\u00e9s de la m\u00e9canique quantique pour d\u00e9tecter directement l\u2019interception. Le Centre suit la migration vers les normes r\u00e9sistantes au quantique et ce qu\u2019elle exige des syst\u00e8mes canadiens.<\/p>\n<\/div><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group alignwide\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"wp-block-paragraph\">Les travaux du Centre en la mati\u00e8re \u00e9clairent ses conseils sur le moment et la mani\u00e8re dont les entit\u00e9s canadiennes devraient amorcer la transition vers une cryptographie r\u00e9sistante au quantique, et sur la fa\u00e7on de prot\u00e9ger entre-temps les secrets \u00e0 longue dur\u00e9e de vie.<\/p>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Quantum technologies change two things at once: what can be computed, and what can be kept secret. The Centre follows both, because the timelines that matter to national security are set now, by decisions taken well before the technology matures. Quantum computing Computation A sufficiently capable quantum computer would break much of the public-key cryptography [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-23","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/nscoesn.ca\/fr\/wp-json\/wp\/v2\/pages\/23","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nscoesn.ca\/fr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/nscoesn.ca\/fr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/nscoesn.ca\/fr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/nscoesn.ca\/fr\/wp-json\/wp\/v2\/comments?post=23"}],"version-history":[{"count":5,"href":"https:\/\/nscoesn.ca\/fr\/wp-json\/wp\/v2\/pages\/23\/revisions"}],"predecessor-version":[{"id":98,"href":"https:\/\/nscoesn.ca\/fr\/wp-json\/wp\/v2\/pages\/23\/revisions\/98"}],"wp:attachment":[{"href":"https:\/\/nscoesn.ca\/fr\/wp-json\/wp\/v2\/media?parent=23"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}