{"id":949,"date":"2019-11-14T10:06:18","date_gmt":"2019-11-14T09:06:18","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/lehning\/?p=949"},"modified":"2019-11-29T11:51:10","modified_gmt":"2019-11-29T10:51:10","slug":"une-carte-a-lea","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/lehning\/2019\/11\/14\/une-carte-a-lea\/","title":{"rendered":"Une carte \u00e0 L\u00e9a"},"content":{"rendered":"<p>Une carte postale adress\u00e9e \u00e0 une jeune fille nomm\u00e9e L\u00e9a chez ses parents le 27 janvier 1905 a de quoi surprendre car elle ne comporte que des\u00a0 nombres s\u00e9par\u00e9s de points ou de tirets.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-951 aligncenter\" src=\"https:\/\/blogs.futura-sciences.com\/lehning\/wp-content\/uploads\/sites\/13\/2019\/10\/carte-postale-chiffre-2-300x207.jpg\" alt=\"\" width=\"300\" height=\"207\" srcset=\"https:\/\/blogs.futura-sciences.com\/lehning\/wp-content\/uploads\/sites\/13\/2019\/10\/carte-postale-chiffre-2-300x207.jpg 300w, https:\/\/blogs.futura-sciences.com\/lehning\/wp-content\/uploads\/sites\/13\/2019\/10\/carte-postale-chiffre-2-768x529.jpg 768w, https:\/\/blogs.futura-sciences.com\/lehning\/wp-content\/uploads\/sites\/13\/2019\/10\/carte-postale-chiffre-2-1024x706.jpg 1024w, https:\/\/blogs.futura-sciences.com\/lehning\/wp-content\/uploads\/sites\/13\/2019\/10\/carte-postale-chiffre-2.jpg 1992w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<h2>Transcription de la carte<\/h2>\n<p>Le texte est constitu\u00e9 de nombres entre 2 et 25, qui repr\u00e9sentent sans doute des lettres de l\u2019alphabet, s\u00e9par\u00e9s par des points et des tirets. Les tirets s\u00e9parent probablement les mots entre eux. Nous le reproduisons ici en rempla\u00e7ant les tirets par des espaces\u00a0:<\/p>\n<p>25.22\u00a0\u00a0\u00a0\u00a0 21.2.8.8.24\u00a0\u00a0\u00a0\u00a0 7.22.4.19.2.20.20.24\u00a0\u00a0\u00a0\u00a0 25.2.23\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 5.24\u00a0\u00a0 12.9.24\u00a0\u00a0 17.24\u00a0\u00a0 18.22.23\u00a0\u00a0 24.5.4.23.18 17.24\u00a0\u00a0 20.22.14.22.23.8 4.23.24.20\u00a0\u00a0 4.24.5.9\u00a0\u00a0 19.24.7.9.23.8\u00a0\u00a0 2 \u00a017.2.9.4.8\u00a0\u00a0\u00a0\u00a0 17.22.23 23.9 18.24.8\u00a0\u00a0 2\u00a0\u00a0 5.22.4.18.24.8\u00a0\u00a0\u00a0\u00a0 5.24\u00a0\u00a0 25.22.18.23.20\u00a0\u00a0 17.24 20.22.23\u00a0\u00a0\u00a0\u00a0 4.23.24.20\u00a0\u00a0 24.9\u00a0\u00a0 22\u00a0\u00a0\u00a0\u00a0 17.22.14.24\u00a0\u00a0\u00a0\u00a0 8.23\u00a0\u00a0\u00a0\u00a0 18.9 8.22.14.22.23.8\u00a0\u00a0\u00a0\u00a0 5.2.25.25.24\u00a0\u00a0\u00a0\u00a0 17.24\u00a0\u00a0\u00a0\u00a0 8.9.23.8 23.25.7.22.18.23.24.20.18\u00a0\u00a0\u00a0\u00a0 12.9.22.20.19\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 24.13.13.24.8 8.2.20.18\u00a0\u00a0\u00a0\u00a0 24.20\u00a0\u00a0\u00a0\u00a0 4.24.18.22.4.19\u00a0\u00a0\u00a0\u00a0 22.9\u00a0\u00a0\u00a0\u00a0 4.24.14.2.23.4 25.2.20\u00a0\u00a0\u00a0\u00a0 22.20.21.24\u00a0\u00a0\u00a0\u00a0 22.19.2.4.24\u00a0\u00a0\u00a0\u00a0 18.2.9.18\u00a0\u00a0\u00a0\u00a0 22\u00a0\u00a0 18.2.23<\/p>\n<h2>Analyse<\/h2>\n<p>On remarque rapidement que le num\u00e9ro 24 est majoritaire. Il repr\u00e9sente sans doute le E. Un mot \u00e0 l\u2019avant derni\u00e8re ligne se trouve alors \u00e0 moiti\u00e9 d\u00e9crypt\u00e9. Il s\u2019agit de 24.13.13.24.8. Le num\u00e9ro 13 r\u00e9p\u00e9t\u00e9 entre deux E ne peut \u00eatre qu\u2019une consonne, plus pr\u00e9cis\u00e9ment L. On en d\u00e9duit que ce mot est \u00ab\u00a0elles\u00a0\u00bb. Le suivant est alors probablement \u00ab\u00a0sont\u00a0\u00bb. Le chiffre s\u2019\u00e9croule alors progressivement. En particulier la formule de politesse est \u00ab\u00a0tout \u00e0 toi\u00a0\u00bb. Finalement, on obtient le texte\u00a0:<\/p>\n<p><em>Ma gosse, pardonne-moi ce que je t\u2019ai \u00e9crit, je n\u2019avais rien re\u00e7u depuis 2 jours. J\u2019ai eu tes 2 cartes ce matin. Je n\u2019ai rien eu \u00e0 ja*e. Si tu savais comme je suis impatient quand elles sont en retard. Au revoir mon ange. Tout \u00e0 toi.<\/em><\/p>\n<p>L\u2019\u00e9toile dans le texte est sans doute une erreur de chiffrement.<\/p>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>Une carte postale adress\u00e9e \u00e0 une jeune fille nomm\u00e9e L\u00e9a chez ses parents le 27 janvier 1905 a de quoi surprendre car elle ne comporte que des\u00a0 nombres s\u00e9par\u00e9s de points ou de tirets. Transcription de la carte Le texte est constitu\u00e9 de nombres entre 2 et 25, qui repr\u00e9sentent sans doute des lettres de &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/lehning\/2019\/11\/14\/une-carte-a-lea\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Une carte \u00e0 L\u00e9a<\/span>  <span class=\"meta-nav\">&rarr;<\/span><\/a><!-- AddThis Advanced Settings generic via filter on get_the_excerpt --><!-- AddThis Share Buttons generic via filter on get_the_excerpt --><\/p>\n","protected":false},"author":12,"featured_media":950,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[9,8,98],"tags":[364,43,365,366],"class_list":["post-949","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cryptologie","category-enigmes","category-viequotidienne","tag-amour","tag-cryptographie","tag-lettre","tag-secret"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Une carte \u00e0 L\u00e9a, par Herv\u00e9 Lehning<\/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:\/\/blogs.futura-sciences.com\/lehning\/2019\/11\/14\/une-carte-a-lea\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Une carte \u00e0 L\u00e9a, par Herv\u00e9 Lehning\" \/>\n<meta property=\"og:description\" content=\"Une carte postale adress\u00e9e \u00e0 une jeune fille nomm\u00e9e L\u00e9a chez ses parents le 27 janvier 1905 a de quoi surprendre car elle ne comporte que des\u00a0 nombres s\u00e9par\u00e9s de points ou de tirets. Transcription de la carte Le texte est constitu\u00e9 de nombres entre 2 et 25, qui repr\u00e9sentent sans doute des lettres de &hellip; Continuer la lecture de Une carte \u00e0 L\u00e9a &rarr;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blogs.futura-sciences.com\/lehning\/2019\/11\/14\/une-carte-a-lea\/\" \/>\n<meta property=\"og:site_name\" content=\"MATH&#039;MONDE, le blog d&#039;Herv\u00e9 LEHNING, agr\u00e9g\u00e9 de math\u00e9matiques\" \/>\n<meta property=\"article:published_time\" content=\"2019-11-14T09:06:18+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2019-11-29T10:51:10+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/blogs.futura-sciences.com\/lehning\/wp-content\/uploads\/sites\/13\/2019\/10\/carte-postale-chiffre-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2069\" \/>\n\t<meta property=\"og:image:height\" content=\"1338\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/lehning\/2019\/11\/14\/une-carte-a-lea\/\",\"url\":\"https:\/\/blogs.futura-sciences.com\/lehning\/2019\/11\/14\/une-carte-a-lea\/\",\"name\":\"Une carte \u00e0 L\u00e9a, par Herv\u00e9 Lehning\",\"isPartOf\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/lehning\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/lehning\/2019\/11\/14\/une-carte-a-lea\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/lehning\/2019\/11\/14\/une-carte-a-lea\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/blogs.futura-sciences.com\/lehning\/wp-content\/uploads\/sites\/13\/2019\/10\/carte-postale-chiffre-1.jpg\",\"datePublished\":\"2019-11-14T09:06:18+00:00\",\"dateModified\":\"2019-11-29T10:51:10+00:00\",\"author\":{\"@id\":\"\"},\"breadcrumb\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/lehning\/2019\/11\/14\/une-carte-a-lea\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/blogs.futura-sciences.com\/lehning\/2019\/11\/14\/une-carte-a-lea\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/lehning\/2019\/11\/14\/une-carte-a-lea\/#primaryimage\",\"url\":\"https:\/\/blogs.futura-sciences.com\/lehning\/wp-content\/uploads\/sites\/13\/2019\/10\/carte-postale-chiffre-1.jpg\",\"contentUrl\":\"https:\/\/blogs.futura-sciences.com\/lehning\/wp-content\/uploads\/sites\/13\/2019\/10\/carte-postale-chiffre-1.jpg\",\"width\":2069,\"height\":1338},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/lehning\/2019\/11\/14\/une-carte-a-lea\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Accueil\",\"item\":\"https:\/\/blogs.futura-sciences.com\/lehning\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Une carte \u00e0 L\u00e9a\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/lehning\/#website\",\"url\":\"https:\/\/blogs.futura-sciences.com\/lehning\/\",\"name\":\"MATH&#039;MONDE, le blog d&#039;Herv\u00e9 LEHNING, agr\u00e9g\u00e9 de math\u00e9matiques\",\"description\":\"Comment comprendre le monde moderne sans culture math\u00e9matique ? 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