{"id":27380,"date":"2024-10-22T16:30:02","date_gmt":"2024-10-22T23:30:02","guid":{"rendered":"https:\/\/xx.network\/?page_id=27380"},"modified":"2024-10-22T16:51:13","modified_gmt":"2024-10-22T23:51:13","slug":"more-on-mixnets","status":"publish","type":"page","link":"https:\/\/xx.network\/pt\/more-on-mixnets\/","title":{"rendered":"cMixx - Mais sobre redes mistas"},"content":{"rendered":"
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Mais sobre Mixnets...<\/h1>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t<\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\tO que, em geral, \u00e9 uma Mixnet?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t

O cMixx \u00e9 uma mixnet muito r\u00e1pida. De modo mais geral, as mixnets, tamb\u00e9m conhecidas como redes de mistura, foram descritas pela primeira vez pelo fundador do xx network, David Chaum, em 1979. Uma mixnet estabelece regras criptogr\u00e1ficas para mensagens ou transa\u00e7\u00f5es a serem retransmitidas por uma sequ\u00eancia de intermedi\u00e1rios confi\u00e1veis conhecidos como n\u00f3s de mistura. Esses n\u00f3s de mistura recebem um lote de dados criptografados dos usu\u00e1rios, permutam ou \"misturam\" aleatoriamente e, em seguida, enviam os dados criptografados reordenados para o pr\u00f3ximo n\u00f3 de mistura.<\/span><\/p>\n

Essa \"mistura\" obscurece os metadados associados \u00e0 atividade do usu\u00e1rio, criando um sistema de comunica\u00e7\u00e3o que protege a privacidade. Metadados s\u00e3o os detalhes de quem, o qu\u00ea, quando, onde e como associados a qualquer mensagem ou atividade.\u00a0<\/span><\/p>\n

A principal desvantagem das mixnets existentes \u00e9 que as opera\u00e7\u00f5es de chave p\u00fablica necess\u00e1rias para a opera\u00e7\u00e3o de mixagem exigem computa\u00e7\u00e3o intensiva. De fato, em 1979, os c\u00e1lculos originalmente descritos no artigo de Chaum excediam a pot\u00eancia da maioria dos computadores existentes. Mesmo agora, a computa\u00e7\u00e3o necess\u00e1ria para mixnets t\u00edpicas consome muitos recursos e tempo. Como resultado, quando executadas em escala, as mixnets s\u00e3o lentas demais para a maioria dos usos do consumidor.<\/span><\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t<\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\tComo o cMixx foi \"inventado\"?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t

Em 2016, Chaum e uma equipe de pesquisadores publicaram um projeto para uma rede de mistura \"acelerada\" chamada \"cmix\". A \"pr\u00e9-computa\u00e7\u00e3o\" foi proposta como a solu\u00e7\u00e3o para a lentid\u00e3o das redes de mistura t\u00edpicas.<\/span><\/p>\n

A pr\u00e9-computa\u00e7\u00e3o permite que os n\u00f3s da mixnet executem a criptografia de chave p\u00fablica demorada antes da fase em tempo real de manipula\u00e7\u00e3o de mensagens ou transmiss\u00e3o de dados entre remetentes e destinat\u00e1rios. O resultado \u00e9 um tipo muito eficiente de mixnet que permite que os usu\u00e1rios enviem e recebam em tempo real sem comprometer a seguran\u00e7a ou a privacidade.<\/span><\/p>\n

Parte do projeto de pesquisa inicial foi uma implementa\u00e7\u00e3o de refer\u00eancia acad\u00eamica que serviu como prova de conceito para o cmix; ela inclu\u00eda uma equipe de back-end de n\u00f3s de mixagem e um cliente rudimentar de smartphone.<\/span><\/p>\n

Em agosto de 2017, sob a lideran\u00e7a de Chaum, um grupo de desenvolvimento come\u00e7ou a criar uma implementa\u00e7\u00e3o descentralizada, segura e dimension\u00e1vel chamada cMixx. A equipe inclu\u00eda pioneiros que desenvolveram os primeiros sistemas criptogr\u00e1ficos pr\u00e1ticos, an\u00f4nimos e verific\u00e1veis. Seus membros estavam entre os primeiros a propor e implantar moedas digitais, redes mistas, criptografia n\u00e3o permitida, sistemas de vota\u00e7\u00e3o verific\u00e1veis e muitos outros avan\u00e7os em criptografia.<\/span><\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

Mais sobre mixnets... O que, em geral, \u00e9 uma mixnet? O cMixx \u00e9 uma mixnet muito r\u00e1pida. De modo mais geral, as mixnets, tamb\u00e9m conhecidas [...]<\/p>\n

Leia mais... de cMixx - Mais sobre redes de mixagem<\/span><\/a><\/p>","protected":false},"author":147,"featured_media":18773,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-27380","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"\ncMixx - More on Mixnets - xx network<\/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:\/\/pvrjousb.elementor.cloud\/ja\/more-on-mixnets\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"cMixx - More on Mixnets - xx network\" \/>\n<meta property=\"og:description\" content=\"More On Mixnets… What, in General, is a Mixnet? cMixx is a very fast mixnet.\u00a0 More generally, mixnets, also known [...]Leia mais... from cMixx – More on Mixnets\" \/>\n<meta property=\"og:url\" content=\"https:\/\/pvrjousb.elementor.cloud\/ja\/more-on-mixnets\/\" \/>\n<meta property=\"og:site_name\" content=\"xx network\" \/>\n<meta property=\"article:modified_time\" content=\"2024-10-22T23:51:13+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/pvrjousb.elementor.cloud\/wp-content\/uploads\/2022\/01\/What-is-it-like-to-be-an-xx-Node_.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1920\" \/>\n\t<meta property=\"og:image:height\" content=\"1080\" \/>\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=\"Est. tempo de leitura\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/pvrjousb.elementor.cloud\/ja\/more-on-mixnets\/\",\"url\":\"https:\/\/pvrjousb.elementor.cloud\/ja\/more-on-mixnets\/\",\"name\":\"cMixx - 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