{"id":272644,"date":"2022-09-15T17:33:49","date_gmt":"2022-09-15T15:33:49","guid":{"rendered":"https:\/\/atlanttic.uvigo.es\/en\/?p=263101"},"modified":"2023-09-11T01:13:41","modified_gmt":"2023-09-10T23:13:41","slug":"o-investigador-de-atlanttic-marcos-curty-participa-en-caramuel-primeira-mision-satelital-en-orbita-xeoestacionaria-para-comunicacions-cuanticas","status":"publish","type":"post","link":"https:\/\/atlanttic.uvigo.es\/en\/2022\/09\/o-investigador-de-atlanttic-marcos-curty-participa-en-caramuel-primeira-mision-satelital-en-orbita-xeoestacionaria-para-comunicacions-cuanticas\/","title":{"rendered":"O investigador de atlanTTic Marcos Curty participa en Caramuel, primeira misi\u00f3n satelital en \u00f3rbita xeoestacionaria para comunicaci\u00f3ns cu\u00e1nticas"},"content":{"rendered":"<div id='gallery-1' class='gallery galleryid-272644 gallery-columns-1 gallery-size-gallery-image-slide'><figure class='gallery-item'><div class='gallery-icon landscape'><div 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aria-hidden=\"true\">Close<\/span><\/button><div class=\"modal-dialog modal-lg modal-dialog-centered\" role=\"document\"><div class=\"modal-content\"><div id='gallery-1-modal' class='gallery gallery-modal'><figure class='gallery-item'>\n                    <div class='gallery-icon landscape'>\n                        <img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"720\" src=\"https:\/\/atlanttic.uvigo.es\/wp-content\/uploads\/2022\/09\/caramuel2-1-1280x720.jpg\" class=\"attachment-gallery-image-slide size-gallery-image-slide\" alt=\"\" srcset=\"https:\/\/atlanttic.uvigo.es\/wp-content\/uploads\/2022\/09\/caramuel2-1-1280x720.jpg 1280w, https:\/\/atlanttic.uvigo.es\/wp-content\/uploads\/2022\/09\/caramuel2-1-800x450.jpg 800w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/>\n                    <\/div><div class=\"gallery-item-slider-controls-position\"><a class=\"gallery-item-download\" href=\"https:\/\/atlanttic.uvigo.es\/wp-content\/uploads\/2022\/09\/caramuel2-1.jpg\" download>Download<\/a><\/div><\/figure><figure class='gallery-item'>\n                    <div class='gallery-icon landscape'>\n                        <img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"720\" src=\"https:\/\/atlanttic.uvigo.es\/wp-content\/uploads\/2022\/09\/caramuel-scaled-2-1280x720.jpeg\" class=\"attachment-gallery-image-slide size-gallery-image-slide\" alt=\"\" srcset=\"https:\/\/atlanttic.uvigo.es\/wp-content\/uploads\/2022\/09\/caramuel-scaled-2-1280x720.jpeg 1280w, https:\/\/atlanttic.uvigo.es\/wp-content\/uploads\/2022\/09\/caramuel-scaled-2-300x169.jpeg 300w, https:\/\/atlanttic.uvigo.es\/wp-content\/uploads\/2022\/09\/caramuel-scaled-2-1024x576.jpeg 1024w, https:\/\/atlanttic.uvigo.es\/wp-content\/uploads\/2022\/09\/caramuel-scaled-2-768x432.jpeg 768w, https:\/\/atlanttic.uvigo.es\/wp-content\/uploads\/2022\/09\/caramuel-scaled-2-1536x864.jpeg 1536w, https:\/\/atlanttic.uvigo.es\/wp-content\/uploads\/2022\/09\/caramuel-scaled-2-2048x1152.jpeg 2048w, https:\/\/atlanttic.uvigo.es\/wp-content\/uploads\/2022\/09\/caramuel-scaled-2-800x450.jpeg 800w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/>\n                    <\/div><div class=\"gallery-item-slider-controls-position\"><a class=\"gallery-item-download\" href=\"https:\/\/atlanttic.uvigo.es\/wp-content\/uploads\/2022\/09\/caramuel-scaled-2.jpeg\" download>Download<\/a><\/div><\/figure><div class=\"gallery-item-slider-controls\"><div class=\"gallery-item-slider-counter\"><span><\/span><\/div><div class=\"gallery-item-slider-arrows\"><\/div><\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n<p>A Universidade de Vigo \u00e9 unha das entidades que est\u00e1 a participar no estudo de viabilidade de Caramuel. Tr\u00e1tase da primeira misi\u00f3n satelital global en \u00f3rbita xeoestacionaria destinada \u00e1 distribuci\u00f3n cu\u00e1ntica de claves, unha das principais tecnolox\u00edas que definir\u00e1n as comunicaci\u00f3ns seguras do futuro. Financiado pola Axencia Espacial Europea e liderado pola empresa Hispasat, este estudo re\u00fane a participaci\u00f3n de m\u00faltiples empresas e organismos internacionais. O obxectivo \u00e9 o de desenvolver unha carga \u00fatil que sit\u00fae a Espa\u00f1a \u00e1 vangarda das comunicaci\u00f3ns espaciais seguras. \u201cA intenci\u00f3n \u00e9 lanzar un sat\u00e9lite comercial xeoestacionario para comunicaci\u00f3ns cu\u00e1nticas, algo que, se todo sae ben, poder\u00eda producirse en 2025\u201d, explica o profesor e investigador de atlanTTic, Marcos Curty, responsable deste proxecto na Universidade de Vigo.<\/p>\n<h3>S\u00f3 as tecnolox\u00edas cu\u00e1nticas poder\u00e1n garantir a seguridade das comunicaci\u00f3ns<\/h3>\n<p>A aparici\u00f3n dos computadores cu\u00e1nticos, fronte aos tradicionais, achega unha potencia computacional moito maior para determinados problemas. Entre eles, a descomposici\u00f3n en factores primos nos que est\u00e1 baseada a seguridade da actual criptograf\u00eda non sim\u00e9trica. Isto supo\u00f1er\u00e1 un cambio de paradigma nas comunicaci\u00f3ns seguras, xa que atacantes con ordenadores cu\u00e1nticos poder\u00e1n descifrar as encriptaci\u00f3ns actuais en cuesti\u00f3n de segundos. Por iso, \u00e9 fundamental o desenvolvemento dun sistema que permita enviar informaci\u00f3n coas garant\u00edas necesarias. Imprescindible en comunicaci\u00f3ns gobernamentais, xesti\u00f3n de infraestruturas cr\u00edticas e aplicaci\u00f3ns e servizos econ\u00f3micos, ambientais ou tecnol\u00f3xicos, ou en grandes corporaci\u00f3ns.<\/p>\n<p>A distribuci\u00f3n cu\u00e1ntica de claves mediante un sistema de comunicaci\u00f3ns \u00f3pticas permite garantir con certeza a s\u00faa seguridade. A integridade das claves establecidas verif\u00edcase de maneira continua grazas \u00e1s propiedades cu\u00e1nticas dos fot\u00f3ns. Na actualidade, a tecnolox\u00eda comercial non permite usar conexi\u00f3ns baseadas en fibra \u00f3ptica para establecer comunicaci\u00f3ns cu\u00e1nticas de algo m\u00e1is de 100 quil\u00f3metros de distancia sen empregar nodos confiables. En cambio, o uso do sat\u00e9lite para o env\u00edo de claves cu\u00e1nticas permite cubrir calquera distancia, xa que a atenuaci\u00f3n do sinal \u00e9 menor no espazo libre. As coberturas xeoestacionarias permiten establecer estas comunicaci\u00f3ns entre continentes cun s\u00f3 sat\u00e9lite de maneira continua e sen establecer seguimento do sinal.<\/p>\n<p>Segundo Curty, \u201ca criptograf\u00eda cl\u00e1sica non pode garantir a seguridade das comunicaci\u00f3ns, salvo que a capacidade computacional dun atacante este limitada, e co desenvolvemento dos computadores cu\u00e1nticos a seguridade das comunicaci\u00f3ns actuais est\u00e1 seriamente amenazada\u201d. Insiste tam\u00e9n en que, pola contra, \u201cas tecnolox\u00edas cu\u00e1nticas poden garantir a seguridade das comunicaci\u00f3ns, independentemente da capacidade computacional do atacante\u201d.<\/p>\n<h3>A UVigo encargouse de avaliar os diferentes protocolos cu\u00e1nticos&#8230;<\/h3>\n<p>Na actualidade a misi\u00f3n Caramuel at\u00f3pase na fase A. Nela a UVigo participa liderando o paquete de traballo relacionado coa avaliaci\u00f3n de protocolos. Tal e como explica Curty, o principal m\u00e9rito das comunicaci\u00f3ns cu\u00e1nticas \u00e9 que se pode demostrar que son seguras. Para establecer unha clave criptogr\u00e1fica p\u00f3dense empregar diferentes protocolos cu\u00e1nticos, unha especie de lista sobre o que se debe facer. Esta\u00a0 incl\u00fae que sinais cu\u00e1nticas hai que transmitir, que tipo de medidas realizar no receptor e como procesar os datos.<\/p>\n<p>\u201cO obxectivo final \u00e9 destilar unha clave secreta, unha serie de n\u00fameros \u2013ceros e uns- \u00a0totalmente aleatorios que son iguais entre o emisor e o receptor, garantindo a s\u00faa seguridade, \u00e9 dicir, que ning\u00fan posible atacante poida ter acceso \u00e1 informaci\u00f3n\u201d, salienta Curty. Recalca ademais o feito de que ter unha clave secreta sim\u00e9trica \u00e9 fundamental para transmitir a informaci\u00f3n de maneira segura. \u201cNa UVigo o que fixemos foi avaliar todos os protocolos existentes e seleccionar aquel que se considera m\u00e1is adecuado para este tipo de misi\u00f3n, \u00e9 dicir, aquel que permite establecer claves desde un sat\u00e9lite xeoestacionario, algo que a maior\u00eda non permitir\u00eda debido as perdas \u00f3pticas neste tipo de enlace\u201d.<\/p>\n<p>A maiores f\u00edxose tam\u00e9n unha estimaci\u00f3n da taxa de xeraci\u00f3n de claves secretas que se poder\u00edan chegar a alcanzar. Dito doutro xeito, cantos bits de claves secretas por segundo ser\u00eda posible lograr cun sat\u00e9lite xeoestacionario. Feito que vai variar en funci\u00f3n dos par\u00e1metros de seguridade que se queiran conseguir. \u201cPor outra banda, tam\u00e9n damos consellos sobre \u00e1 implementaci\u00f3n dos protocolos relativos ao hardware, \u00e9 dicir, sobre como se poder\u00edan implementar estes protocolos de manera m\u00e1is eficiente\u201d, salienta o investigador da Escola de Enxe\u00f1ar\u00eda de Telecomunicaci\u00f3n.<\/p>\n<h3>&#8230; e participa tam\u00e9n no comit\u00e9 asesor da misi\u00f3n<\/h3>\n<p>Ademais de liderar o paquete de traballo de Avaliaci\u00f3n de Protocolos, a Universidade de Vigo participa tam\u00e9n no comit\u00e9 asesor. Esta enc\u00e1rgase de supervisar o conxunto de tarefas que se fixeron e que se est\u00e1n facer. \u201cSomos responsables de revisar a tecnolox\u00eda dos protocolos cu\u00e1nticos seleccionados, algo moi vinculado \u00e1s tarefas do grupo de traballo que n\u00f3s lideramos, de revisar a arquitectura global do sistema \u2013como se vai facer para establecer as claves entre os diferentes puntos- e de avaliar a seguridade de extremo a extremo\u201d.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A Universidade de Vigo \u00e9 unha das entidades que est\u00e1 a participar no estudo de viabilidade de Caramuel. Tr\u00e1tase da primeira misi\u00f3n satelital global&hellip;<\/p>\n","protected":false},"author":1,"featured_media":272649,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[50],"tags":[],"class_list":["post-272644","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-duvi"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>O investigador de atlanTTic Marcos Curty participa en Caramuel, primeira misi\u00f3n satelital en \u00f3rbita xeoestacionaria para comunicaci\u00f3ns cu\u00e1nticas - atlanTTic<\/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:\/\/atlanttic.uvigo.es\/en\/2022\/09\/o-investigador-de-atlanttic-marcos-curty-participa-en-caramuel-primeira-mision-satelital-en-orbita-xeoestacionaria-para-comunicacions-cuanticas\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"O investigador de atlanTTic Marcos Curty participa en Caramuel, primeira misi\u00f3n satelital en \u00f3rbita xeoestacionaria para comunicaci\u00f3ns cu\u00e1nticas - atlanTTic\" \/>\n<meta property=\"og:description\" content=\"A Universidade de Vigo \u00e9 unha das entidades que est\u00e1 a participar no estudo de viabilidade de Caramuel. 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