{"id":106545,"date":"2023-01-29T12:48:46","date_gmt":"2023-01-29T10:48:46","guid":{"rendered":"https:\/\/prohoster.info\/?p=106545"},"modified":"2023-02-07T12:09:03","modified_gmt":"2023-02-07T10:09:03","slug":"zavisimost-vremeni-vypolneniya-instrukczij-ot-dannyh-na-cpu-arm-i-intel","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/novosti-interneta\/zavisimost-vremeni-vypolneniya-instrukczij-ot-dannyh-na-cpu-arm-i-intel","title":{"rendered":"Var\u00ebsia e koh\u00ebs s\u00eb ekzekutimit t\u00eb instrukcioneve nga t\u00eb dh\u00ebnat n\u00eb CPU ARM dhe Intel.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Eric Biggers, nj\u00eb nga zhvilluesit e algoritmit Adiantum dhe mir\u00ebmbajt\u00ebsi i n\u00ebnsistem\u00ebs fscrypt t\u00eb kernelit Linux, ofroi nj\u00eb set patch-esh p\u00ebr t\u00eb zgjidhur problemet e siguris\u00eb q\u00eb dalin nga ve\u00e7orit\u00eb e procesor\u00ebve Intel, t\u00eb cilat nuk garantojn\u00eb koh\u00eb t\u00eb q\u00ebndrueshme ekzekutimi p\u00ebr t\u00eb dh\u00ebna t\u00eb ndryshme q\u00eb p\u00ebrpunohen. Problemi n\u00eb procesor\u00ebt Intel shfaqet q\u00eb nga familia Ice Lake. Nj\u00eb problem i ngjash\u00ebm v\u00ebrehet edhe n\u00eb procesor\u00ebt ARM. <\/p>\n

Prania e var\u00ebsis\u00eb s\u00eb koh\u00ebs s\u00eb ekzekutimit t\u00eb instrukcioneve nga t\u00eb dh\u00ebnat q\u00eb p\u00ebrpunohen n\u00eb k\u00ebto instrukcione shikohet nga autori i patch-ave si nj\u00eb vulnerabilitet n\u00eb procesor\u00ebt, pasi nj\u00eb sjellje e till\u00eb nuk mund t\u00eb garantoj\u00eb sigurin\u00eb e operacioneve kriptografike q\u00eb kryhen n\u00eb sistem. M\u00eb shum\u00eb realizime t\u00eb algoritmeve kriptografik\u00eb jan\u00eb planifikuar n\u00ebn parimin se t\u00eb dh\u00ebnat nuk ndikojn\u00eb n\u00eb koh\u00ebn e ekzekutimit t\u00eb instrukcioneve, dhe shkelja e k\u00ebsaj sjelljeje mund t\u00eb \u00e7oj\u00eb n\u00eb organizimin e sulmeve p\u00ebrmes kanaleve an\u00ebsore q\u00eb rikuperojn\u00eb t\u00eb dh\u00ebna duke analizuar koh\u00ebn e p\u00ebrpunimit t\u00eb tyre. <\/p>\n

Potencialisht, var\u00ebsia e koh\u00ebs s\u00eb ekzekutimit nga t\u00eb dh\u00ebnat gjithashtu mund t\u00eb p\u00ebrdoret p\u00ebr organizimin e sulmeve q\u00eb p\u00ebrcaktojn\u00eb t\u00eb dh\u00ebna t\u00eb kernelit nga hap\u00ebsira e p\u00ebrdoruesit. Sipas Eric Biggers, koha e p\u00ebrhershme e ekzekutimit nuk sigurohet me defaut as p\u00ebr instrukcionet q\u00eb kryejn\u00eb operacione mbledhjeje dhe XOR, as p\u00ebr instrukcionet e specializuara AES-NI (informacioni nuk \u00ebsht\u00eb konfirmuar nga testet, sipas disa burimeve, gjat\u00eb shum\u00ebzimit t\u00eb vektor\u00ebve dhe num\u00ebrimit t\u00eb bit\u00ebve, ndodh nj\u00eb vones\u00eb prej nj\u00eb cikli). <\/p>\n

P\u00ebr t\u00eb \u00e7aktivizuar k\u00ebt\u00eb sjellje, kompanit\u00eb Intel dhe ARM ofruan flamuj t\u00eb rinj: PSTATE-bit DIT (Data Independent Timing) p\u00ebr CPU ARM dhe MSR-bit DOITM (Data Operand Independent Timing Mode) p\u00ebr CPU Intel, t\u00eb cilat rikthejn\u00eb sjelljen e vjet\u00ebr me koh\u00eb ekzekutimi t\u00eb q\u00ebndrueshme. Kompanit\u00eb Intel dhe ARM rekomandojn\u00eb aktivizimin e mbrojtjes sipas nevoj\u00ebs p\u00ebr kodin e ve\u00e7ant\u00eb, por n\u00eb praktik\u00eb, llogarit\u00eb e r\u00ebnd\u00ebsishme mund t\u00eb ndodhin n\u00eb \u00e7do pjes\u00eb t\u00eb kernelit dhe hap\u00ebsir\u00ebn e p\u00ebrdoruesit, prandaj po shqyrtohet mund\u00ebsia e aktivizimit t\u00eb p\u00ebrhersh\u00ebm t\u00eb mod\u00ebve DOITM dhe DIT p\u00ebr t\u00eb gjith\u00eb kernelin. <\/p>\n

P\u00ebr procesor\u00ebt ARM, n\u00eb deg\u00ebn e kernelit Linux 6.2 jan\u00eb pranuar tashm\u00eb patch-et q\u00eb ndryshojn\u00eb sjelljen p\u00ebr kernelin, por k\u00ebto patch-e merren si t\u00eb pamjaftueshme, pasi ato mbulojn\u00eb vet\u00ebm kodin e kernelit dhe nuk ndryshojn\u00eb sjelljen p\u00ebr hap\u00ebsir\u00ebn e p\u00ebrdoruesit. P\u00ebr procesor\u00ebt Intel, aktivizimi i mbrojtjes \u00ebsht\u00eb ende n\u00eb faz\u00ebn e rivler\u00ebsimit. Matja e ndikimit t\u00eb patch-it n\u00eb performanc\u00eb ende nuk \u00ebsht\u00eb kryer, por sipas t\u00eb dh\u00ebnave nga dokumentacioni i Intel, aktivizimi i modit DOITM zvog\u00eblon performanc\u00ebn (p.sh., p\u00ebr shkak t\u00eb ndalimit t\u00eb disa optimizimeve, si ngarkimi i parashikuar specifik p\u00ebr t\u00eb dh\u00ebna), dhe n\u00eb modelet e ardhshme t\u00eb procesor\u00ebve, zvog\u00eblimi i performanc\u00ebs mund t\u00eb intensifikohet.
\n
Burimi: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u042d\u0440\u0438\u043a \u0411\u0438\u0433\u0433\u0435\u0440\u0441 (Eric Biggers), \u043e\u0434\u0438\u043d \u0438\u0437 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u043e\u0432 \u0448\u0438\u0444\u0440\u0430 Adiantum \u0438 \u043c\u044d\u0439\u043d\u0442\u0435\u0439\u043d\u0435\u0440 \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u044b \u044f\u0434\u0440\u0430 Linux fscrypt, \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0438\u043b \u043d\u0430\u0431\u043e\u0440 \u043f\u0430\u0442\u0447\u0435\u0439 \u0434\u043b\u044f \u0431\u043b\u043e\u043a\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u043f\u0440\u043e\u0431\u043b\u0435\u043c \u0441 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u044c\u044e, \u0432\u043e\u0437\u043d\u0438\u043a\u0430\u044e\u0449\u0438\u0445 \u0438\u0437-\u0437\u0430 \u043e\u0441\u043e\u0431\u0435\u043d\u043d\u043e\u0441\u0442\u0438 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u043e\u0432 Intel, \u043d\u0435 \u0433\u0430\u0440\u0430\u043d\u0442\u0438\u0440\u0443\u044e\u0449\u0435\u0439 \u043f\u043e\u0441\u0442\u043e\u044f\u043d\u043d\u043e\u0435 \u0432\u0440\u0435\u043c\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0438\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u0439 \u0434\u043b\u044f \u0440\u0430\u0437\u043d\u044b\u0445 \u043e\u0431\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u0435\u043c\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445. \u0412 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u0430\u0445 Intel \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u043f\u0440\u043e\u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u043d\u0430\u0447\u0438\u043d\u0430\u044f \u0441 \u0441\u0435\u043c\u0435\u0439\u0441\u0442\u0432\u0430 Ice Lake. \u0410\u043d\u0430\u043b\u043e\u0433\u0438\u0447\u043d\u0430\u044f \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u043d\u0430\u0431\u043b\u044e\u0434\u0430\u0435\u0442\u0441\u044f \u0438 \u0432 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u0430\u0445 ARM. […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-106545","post","type-post","status-publish","format-standard","hentry","category-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Var\u00ebsia e koh\u00ebs s\u00eb ekzekutimit t\u00eb instrukcioneve nga t\u00eb dh\u00ebnat n\u00eb CPU ARM dhe Intel | ProHoster","description":"Eric Biggers, nj\u00eb nga zhvilluesit e algoritmit Adiantum dhe mir\u00ebmbajt\u00ebsi i n\u00ebnsistem\u00ebs fscrypt t\u00eb kernelit Linux, ofroi nj\u00eb set patch-esh p\u00ebr t\u00eb zgjidhur problemet e siguris\u00eb q\u00eb dalin nga ve\u00e7orit\u00eb e procesor\u00ebve Intel, t\u00eb cilat nuk garantojn\u00eb koh\u00eb t\u00eb q\u00ebndrueshme ekzekutimi p\u00ebr t\u00eb dh\u00ebna t\u00eb ndryshme q\u00eb p\u00ebrpunohen. Problemi n\u00eb procesor\u00ebt Intel shfaqet q\u00eb nga familia Ice Lake. Nj\u00eb problem i ngjash\u00ebm v\u00ebrehet edhe n\u00eb procesor\u00ebt ARM.","canonical_url":"https:\/\/prohoster.info\/sq\/blog\/novosti-interneta\/zavisimost-vremeni-vypolneniya-instrukczij-ot-dannyh-na-cpu-arm-i-intel","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"sq_AL","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0417\u0430\u0432\u0438\u0441\u0438\u043c\u043e\u0441\u0442\u044c \u0432\u0440\u0435\u043c\u0435\u043d\u0438 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0438\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u0439 \u043e\u0442 \u0434\u0430\u043d\u043d\u044b\u0445 \u043d\u0430 CPU ARM \u0438 Intel | ProHoster","og:description":"\u042d\u0440\u0438\u043a \u0411\u0438\u0433\u0433\u0435\u0440\u0441 (Eric Biggers), \u043e\u0434\u0438\u043d \u0438\u0437 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u043e\u0432 \u0448\u0438\u0444\u0440\u0430 Adiantum \u0438 \u043c\u044d\u0439\u043d\u0442\u0435\u0439\u043d\u0435\u0440 \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u044b \u044f\u0434\u0440\u0430 Linux fscrypt, \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0438\u043b \u043d\u0430\u0431\u043e\u0440 \u043f\u0430\u0442\u0447\u0435\u0439 \u0434\u043b\u044f \u0431\u043b\u043e\u043a\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u043f\u0440\u043e\u0431\u043b\u0435\u043c \u0441 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u044c\u044e, \u0432\u043e\u0437\u043d\u0438\u043a\u0430\u044e\u0449\u0438\u0445 \u0438\u0437-\u0437\u0430 \u043e\u0441\u043e\u0431\u0435\u043d\u043d\u043e\u0441\u0442\u0438 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u043e\u0432 Intel, \u043d\u0435 \u0433\u0430\u0440\u0430\u043d\u0442\u0438\u0440\u0443\u044e\u0449\u0435\u0439 \u043f\u043e\u0441\u0442\u043e\u044f\u043d\u043d\u043e\u0435 \u0432\u0440\u0435\u043c\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0438\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u0439 \u0434\u043b\u044f \u0440\u0430\u0437\u043d\u044b\u0445 \u043e\u0431\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u0435\u043c\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445. \u0412 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u0430\u0445 Intel \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u043f\u0440\u043e\u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u043d\u0430\u0447\u0438\u043d\u0430\u044f \u0441 \u0441\u0435\u043c\u0435\u0439\u0441\u0442\u0432\u0430 Ice Lake. \u0410\u043d\u0430\u043b\u043e\u0433\u0438\u0447\u043d\u0430\u044f \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u043d\u0430\u0431\u043b\u044e\u0434\u0430\u0435\u0442\u0441\u044f \u0438 \u0432 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u0430\u0445 ARM.","og:url":"https:\/\/prohoster.info\/sq\/blog\/novosti-interneta\/zavisimost-vremeni-vypolneniya-instrukczij-ot-dannyh-na-cpu-arm-i-intel","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2023-01-29T10:48:46+00:00","article:modified_time":"2023-02-07T10:09:03+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":[],"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/sq\/wp-json\/wp\/v2\/posts\/106545","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/sq\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/sq\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/sq\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/sq\/wp-json\/wp\/v2\/comments?post=106545"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/sq\/wp-json\/wp\/v2\/posts\/106545\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/sq\/wp-json\/wp\/v2\/media?parent=106545"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/sq\/wp-json\/wp\/v2\/categories?post=106545"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/sq\/wp-json\/wp\/v2\/tags?post=106545"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}