{"id":1722,"date":"2018-07-14T17:59:17","date_gmt":"2018-07-14T17:59:17","guid":{"rendered":"https:\/\/fr.cryptonews.com\/?p=1722"},"modified":"2023-06-26T11:11:12","modified_gmt":"2023-06-26T11:11:12","slug":"comment-ca-marche-la-cryptographie","status":"publish","type":"videos","link":"https:\/\/cryptonews.com\/fr\/videos\/comment-ca-marche-la-cryptographie\/","title":{"rendered":"[Comment \u00e7a marche ?] La cryptographie"},"content":{"rendered":"<p>C\u2019est en pleine guerre des Gaules que l\u2019on trouve trace du premier message cod\u00e9. C\u00e9sar cryptait ses lettres en utilisant un code connu du seul destinataire. Aujourd\u2019hui, le \u00ab Chiffre de C\u00e9sar \u00bb a laiss\u00e9 la place \u00e0 des syst\u00e8mes plus complexes mais bien plus r\u00e9sistants. Mais la s\u00e9curit\u00e9 des \u00e9changes cod\u00e9s repose toujours sur deux \u00e9l\u00e9ments : la confidentialit\u00e9 de la cl\u00e9 et l\u2019invuln\u00e9rabilit\u00e9 de l\u2019algorithme. Nos transferts d&#8217;argent, connexions t\u00e9l\u00e9phonique, bitcoins, messageries s\u00e9curis\u00e9es\u2026 reposent sur cette &#8220;s\u00e9curit\u00e9 computationnelle&#8221;.<\/p>","protected":false},"excerpt":{"rendered":"<p>C\u2019est en pleine guerre des Gaules que l\u2019on trouve trace du premier message cod\u00e9. C\u00e9sar cryptait ses lettres en utilisant un code connu du seul destinataire. Aujourd\u2019hui, le \u00ab Chiffre de C\u00e9sar \u00bb a laiss\u00e9 la place \u00e0 des syst\u00e8mes plus complexes mais bien plus r\u00e9sistants. Mais la s\u00e9curit\u00e9 des \u00e9changes cod\u00e9s repose toujours sur [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"template":"","format":"standard","tags":[70,71],"video_categories":[31],"editors":[],"class_list":["post-1722","videos","type-videos","status-publish","format-standard","hentry","tag-altcoins","tag-cryptomonnaies","video_categories-cryptosecurity"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>[Comment \u00e7a marche ?] La cryptographie<\/title>\n<meta name=\"robots\" content=\"noindex, follow\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Comment \u00e7a marche ?] La cryptographie\" \/>\n<meta property=\"og:url\" content=\"https:\/\/cryptonews.com\/fr\/videos\/comment-ca-marche-la-cryptographie\/\" \/>\n<meta property=\"og:site_name\" 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