{"id":145379,"date":"2018-06-26T12:50:59","date_gmt":"2018-06-26T11:50:59","guid":{"rendered":"http:\/\/www.madrimasd.org\/blogs\/matematicas\/?p=145379"},"modified":"2018-06-26T14:51:00","modified_gmt":"2018-06-26T13:51:00","slug":"las-matematicas-de-la-criptologia","status":"publish","type":"post","link":"https:\/\/www.madrimasd.org\/blogs\/matematicas\/2018\/06\/26\/145379","title":{"rendered":"Las matem\u00e1ticas de la criptolog\u00eda"},"content":{"rendered":"<blockquote><p><em>There are many ways to tell your secrets. I think that a decent man who has discovered valuable secrets is under some obligation to share them. But I think that the technique of sharing them is a great study. And there are great masters who know how to impact the secrets they\u2019ve learned.<strong> <\/strong><\/em><\/p>\n<p><a href=\"https:\/\/thewalrus.ca\/i-have-no-idea-of-the-sound-im-looking-for\/\" rel=\"noopener\" target=\"_blank\">An Interview with Leonard Cohen<\/a><\/p><\/blockquote>\n<p>&nbsp;<\/p>\n<p><a href=\" https:\/\/www.catarata.org\/coleccion\/miradas-matematicas\/ \">Miradas matem\u00e1ticas<\/a>, la nueva colecci\u00f3n de La Catarata, acaba de lanzar su tercer libro, Las matem\u00e1ticas de la criptolog\u00eda, con un sugestivo subt\u00edtulo: Secretos demostrables y demostraciones secretas. La autora es la Profesora Mar\u00eda Isabel Gonz\u00e1lez Vasco, de la Universidad Rey Juan Carlos.<\/p>\n<p><a href=\"https:\/\/www.madrimasd.org\/blogs\/matematicas\/files\/2018\/06\/9788490975053.jpg\"><img decoding=\"async\" class=\"aligncenter size-medium wp-image-145393\" title=\"9788490975053\" src=\"https:\/\/www.madrimasd.org\/blogs\/matematicas\/files\/2018\/06\/9788490975053-191x300.jpg\" alt=\"\" width=\"191\" height=\"300\" srcset=\"https:\/\/www.madrimasd.org\/blogs\/matematicas\/files\/2018\/06\/9788490975053-191x300.jpg 191w, https:\/\/www.madrimasd.org\/blogs\/matematicas\/files\/2018\/06\/9788490975053-651x1024.jpg 651w, https:\/\/www.madrimasd.org\/blogs\/matematicas\/files\/2018\/06\/9788490975053.jpg 764w\" sizes=\"(max-width: 191px) 100vw, 191px\" \/><\/a><\/p>\n<p>Como comentamos en <a href=\"https:\/\/www.madrimasd.org\/blogs\/matematicas\/2017\/07\/11\/144023\">una entrada anterior<\/a>,\u00a0 Miradas Matem\u00e1ticas \u201cpretende combinar la divulgaci\u00f3n con la did\u00e1ctica de las matem\u00e1ticas, y llevar la investigaci\u00f3n en matem\u00e1ticas a las aulas de secundaria y bachillerato. El objetivo es romper con la idea de las matem\u00e1ticas como un cuerpo estanco, que no evoluciona, con reglas que parecen surgir de la chistera de un mago, cuando, al contrario, se trata de un conocimiento en constante ebullici\u00f3n y profundamente conectado con la realidad.\u201d<\/p>\n<p>No tengo ninguna duda de que este nuevo t\u00edtulo cumple a la perfecci\u00f3n estos objetivos. Adem\u00e1s, en un mundo dominado por la tecnolog\u00eda digital, en la que luchamos para mantener la privacidad pero a la vez hacemos cada d\u00eda m\u00e1s p\u00fablica nuestra vida, es de vital importancia conocer como funcionan las t\u00e9cnicas criptogr\u00e1ficas.<\/p>\n<p>Estas t\u00e9cnicas son muy antiguas, y la autora nos cuenta por ejemplo el llamado cifrado de C\u00e9sar, que consist\u00eda en sustituir cada letra por la que ocupaba el lugar tres puestos m\u00e1s adelante, volveindo al principio siguiendo un rudimentario m\u00e9todo de aritm\u00e9tica circular. A partir de ah\u00ed, y con un lenguaje muy asequible, se van desentra\u00f1ando la historia moderna de la criptograf\u00eda, mostrando que los logros de cient\u00edficos Whitfield Diffie, Martin Hellman, Ronald Rivest, Adi Shamir, Leonard Adleman, Silvio Micali o Shafi Goldwaser est\u00e1n fuertemente basados en las matem\u00e1ticas, concretamente, en la teor\u00eda de grupos, los cuerpos finitos y los n\u00fameros primos.<\/p>\n<p>El libro contiene adem\u00e1s una serie de ejercicios para que el lector practique los conceptos te\u00f3ricos que se van introduciendo.<\/p>\n<p>La autora comienza el Cap\u00edtulo 4 con la cita de Leonard Cohen en una entrevista de 2016 que reproducimos arriba; ella es una maestra que conoce el impacto de los secretos que ha aprendido.<\/p>\n<figure id=\"attachment_145384\" aria-describedby=\"caption-attachment-145384\" style=\"width: 300px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/www.madrimasd.org\/blogs\/matematicas\/files\/2018\/06\/Mbelweb.jpg\"><img decoding=\"async\" class=\"size-medium wp-image-145384\" title=\"Mbelweb\" src=\"https:\/\/www.madrimasd.org\/blogs\/matematicas\/files\/2018\/06\/Mbelweb-300x293.jpg\" alt=\"\" width=\"300\" height=\"293\" srcset=\"https:\/\/www.madrimasd.org\/blogs\/matematicas\/files\/2018\/06\/Mbelweb-300x293.jpg 300w, https:\/\/www.madrimasd.org\/blogs\/matematicas\/files\/2018\/06\/Mbelweb.jpg 343w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><figcaption id=\"caption-attachment-145384\" class=\"wp-caption-text\">Mar\u00eda Isabel Gonz\u00e1lez Vasco<\/figcaption><\/figure>\n<p><em><span style=\"text-decoration: underline;\"><strong>Sobre la autora<\/strong><\/span><\/em>: <strong>Maribel Gonz\u00e1lez Vasco<\/strong> es profesora titular de Matem\u00e1tica Aplicada de la Universidad Rey Juan Carlos. Licenciada en Matem\u00e1ticas y doctora por la Universidad de Oviedo, ha desarrollado su carrera investigadora colaborando con distintos centros p\u00fablicos y privados (Philips Crypto,\u00a0 Instituto IAKS de la U. de Karlsruhe, CCIS Florida, Imdea Software, Madrid).\u00a0 Su trabajo se centra en la criptograf\u00eda matem\u00e1tica, espec\u00edficamente en el \u00e1mbito de la seguridad demostrable para cifrado de clave p\u00fablica e intercambio de clave\u00a0 en entornos multiusuario. Ha publicado m\u00e1s de 40 art\u00edculos en revistas y congresos especializados. Es miembro de la Asociaci\u00f3n Internacional de Investigaci\u00f3n en Criptolog\u00eda y\u00a0 vocal de la Junta de Gobierno de la Real Sociedad Matem\u00e1tica Espa\u00f1ola.<\/p>\n<p>____<strong><strong><\/strong><\/strong><\/p>\n<p><strong><strong>Manuel de Le\u00f3n<\/strong>\u00a0<\/strong>(CSIC, Fundador del ICMAT, Real Academia de Ciencias, Real Academia Canaria de Ciencias, ICSU).<\/p>\n<p><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c url('data:image\/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIGhlaWdodD0iMzBweCIgd2lkdGg9IjMwcHgiIHZpZXdCb3g9Ii0xIC0xIDMxIDMxIj48Zz48cGF0aCBkPSJNMjkuNDQ5LDE0LjY2MiBDMjkuNDQ5LDIyLjcyMiAyMi44NjgsMjkuMjU2IDE0Ljc1LDI5LjI1NiBDNi42MzIsMjkuMjU2IDAuMDUxLDIyLjcyMiAwLjA1MSwxNC42NjIgQzAuMDUxLDYuNjAxIDYuNjMyLDAuMDY3IDE0Ljc1LDAuMDY3IEMyMi44NjgsMC4wNjcgMjkuNDQ5LDYuNjAxIDI5LjQ0OSwxNC42NjIiIGZpbGw9IiNmZmYiIHN0cm9rZT0iI2ZmZiIgc3Ryb2tlLXdpZHRoPSIxIj48L3BhdGg+PHBhdGggZD0iTTE0LjczMywxLjY4NiBDNy41MTYsMS42ODYgMS42NjUsNy40OTUgMS42NjUsMTQuNjYyIEMxLjY2NSwyMC4xNTkgNS4xMDksMjQuODU0IDkuOTcsMjYuNzQ0IEM5Ljg1NiwyNS43MTggOS43NTMsMjQuMTQzIDEwLjAxNiwyMy4wMjIgQzEwLjI1MywyMi4wMSAxMS41NDgsMTYuNTcyIDExLjU0OCwxNi41NzIgQzExLjU0OCwxNi41NzIgMTEuMTU3LDE1Ljc5NSAxMS4xNTcsMTQuNjQ2IEMxMS4xNTcsMTIuODQyIDEyLjIxMSwxMS40OTUgMTMuNTIyLDExLjQ5NSBDMTQuNjM3LDExLjQ5NSAxNS4xNzUsMTIuMzI2IDE1LjE3NSwxMy4zMjMgQzE1LjE3NSwxNC40MzYgMTQuNDYyLDE2LjEgMTQuMDkzLDE3LjY0MyBDMTMuNzg1LDE4LjkzNSAxNC43NDUsMTkuOTg4IDE2LjAyOCwxOS45ODggQzE4LjM1MSwxOS45ODggMjAuMTM2LDE3LjU1NiAyMC4xMzYsMTQuMDQ2IEMyMC4xMzYsMTAuOTM5IDE3Ljg4OCw4Ljc2NyAxNC42NzgsOC43NjcgQzEwLjk1OSw4Ljc2NyA4Ljc3NywxMS41MzYgOC43NzcsMTQuMzk4IEM4Ljc3NywxNS41MTMgOS4yMSwxNi43MDkgOS43NDksMTcuMzU5IEM5Ljg1NiwxNy40ODggOS44NzIsMTcuNiA5Ljg0LDE3LjczMSBDOS43NDEsMTguMTQxIDkuNTIsMTkuMDIzIDkuNDc3LDE5LjIwMyBDOS40MiwxOS40NCA5LjI4OCwxOS40OTEgOS4wNCwxOS4zNzYgQzcuNDA4LDE4LjYyMiA2LjM4NywxNi4yNTIgNi4zODcsMTQuMzQ5IEM2LjM4NywxMC4yNTYgOS4zODMsNi40OTcgMTUuMDIyLDYuNDk3IEMxOS41NTUsNi40OTcgMjMuMDc4LDkuNzA1IDIzLjA3OCwxMy45OTEgQzIzLjA3OCwxOC40NjMgMjAuMjM5LDIyLjA2MiAxNi4yOTcsMjIuMDYyIEMxNC45NzMsMjIuMDYyIDEzLjcyOCwyMS4zNzkgMTMuMzAyLDIwLjU3MiBDMTMuMzAyLDIwLjU3MiAxMi42NDcsMjMuMDUgMTIuNDg4LDIzLjY1NyBDMTIuMTkzLDI0Ljc4NCAxMS4zOTYsMjYuMTk2IDEwLjg2MywyNy4wNTggQzEyLjA4NiwyNy40MzQgMTMuMzg2LDI3LjYzNyAxNC43MzMsMjcuNjM3IEMyMS45NSwyNy42MzcgMjcuODAxLDIxLjgyOCAyNy44MDEsMTQuNjYyIEMyNy44MDEsNy40OTUgMjEuOTUsMS42ODYgMTQuNzMzLDEuNjg2IiBmaWxsPSIjYmQwODFjIj48L3BhdGg+PC9nPjwvc3ZnPg==') no-repeat scroll 3px 50% \/ 14px 14px; 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I think that a decent man who has discovered valuable secrets is under some obligation to share them. But I think that the technique of sharing them is a great study. And there are great masters who know how to impact the secrets they\u2019ve learned. An Interview with Leonard Cohen &nbsp; Miradas matem\u00e1ticas, la nueva colecci\u00f3n de La Catarata, acaba de lanzar su tercer libro, Las matem\u00e1ticas de la criptolog\u00eda, con un sugestivo subt\u00edtulo: Secretos demostrables y demostraciones secretas. La autora es la Profesora Mar\u00eda Isabel Gonz\u00e1lez Vasco, de la Universidad Rey\u2026<\/p>\n","protected":false},"author":49,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0},"categories":[1],"tags":[38732,36999],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":4}},"aioseo_notices":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v18.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Las matem\u00e1ticas de la criptolog\u00eda - Matem\u00e1ticas y sus fronteras<\/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:\/\/www.madrimasd.org\/blogs\/matematicas\/2018\/06\/26\/145379\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Las matem\u00e1ticas de la criptolog\u00eda - Matem\u00e1ticas y sus fronteras\" \/>\n<meta property=\"og:description\" content=\"There are many ways to tell your secrets. I think that a decent man who has discovered valuable secrets is under some obligation to share them. But I think that the technique of sharing them is a great study. And there are great masters who know how to impact the secrets they\u2019ve learned. An Interview with Leonard Cohen &nbsp; Miradas matem\u00e1ticas, la nueva colecci\u00f3n de La Catarata, acaba de lanzar su tercer libro, Las matem\u00e1ticas de la criptolog\u00eda, con un sugestivo subt\u00edtulo: Secretos demostrables y demostraciones secretas. 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