{"id":618573,"date":"2026-01-18T19:15:24","date_gmt":"2026-01-18T18:15:24","guid":{"rendered":"https:\/\/cronologia-universale.it\/1623-2\/"},"modified":"2026-01-18T19:15:24","modified_gmt":"2026-01-18T18:15:24","slug":"1586-4","status":"publish","type":"post","link":"https:\/\/cronologia-universale.it\/en\/1586-4\/","title":{"rendered":"1586"},"content":{"rendered":"<p>Blaise de Vigner\u00e9 publishes the Vigner\u00e9 Cypher. It uses 26 different encryption alphabets, each shifted by one letter from the previous one, making the system impervious to letter-frequency analysis, the weakness of previous codes. His work culminates in his Traict\u00e9 de Chiffres of 1586. Ironically, this is the same year that Thomas Phelippes cracks the secret code of Mary Queen of Scots&#8217; letters. If Mary had read the treatise and used the Vigner\u00e9 Cypher, Phelippes would not have been able to crack her code, and Mary would not have been beheaded. In any case, the Vigner\u00e9 Cypher would remain virtually unknown for another two centuries. This encryption technique had been pioneered by Leon Battista Alberti, but he never fully developed it. This is, in fact, the first significant advance in encryption for over a thousand years, in which decryption has always had the edge.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Blaise de Vigner\u00e9 publishes the Vigner\u00e9 Cypher. It uses 26 different encryption alphabets, each shifted&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[43],"tags":[],"class_list":["post-618573","post","type-post","status-publish","format-standard","hentry","category-vg-en"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>1586 - Cronologia Universale<\/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:\/\/cronologia-universale.it\/en\/1586-4\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"1586 - Cronologia Universale\" \/>\n<meta property=\"og:description\" content=\"Blaise de Vigner\u00e9 publishes the Vigner\u00e9 Cypher. 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