{"id":116366,"date":"2024-06-05T15:40:14","date_gmt":"2024-06-05T13:40:14","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/nabor-patchej-dlya-uskoreniya-shifrovaniya-deshifrovaniya-aes-gcm"},"modified":"2024-06-05T15:40:14","modified_gmt":"2024-06-05T13:40:14","slug":"nabor-patchej-dlya-uskoreniya-shifrovaniya-deshifrovaniya-aes-gcm","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/nabor-patchej-dlya-uskoreniya-shifrovaniya-deshifrovaniya-aes-gcm","title":{"rendered":"AES-GCM titkos\u00edt\u00e1si\/dek\u00f3dol\u00e1si gyors\u00edt\u00f3 csomag","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

\"AES-GCM <\/p>\n

J\u00fanius 2-\u00e1n \u00c9ric Biggers (a Google m\u00e9rn\u00f6ke) bemutatta az AES-XTS \u00faj megval\u00f3s\u00edt\u00e1sait, amelyek jelent\u0151sen magasabb teljes\u00edtm\u00e9nyt ny\u00fajtanak az Intel\/AMD processzorok sz\u00e1m\u00e1ra az AES-NI + AVX, VAES + AVX2, VAES + AVX10\/256 \u00e9s VAES + AVX10\/512 \u00faj k\u00f3dk\u00e9szleteivel.<\/p>\n

Az AES-NI GCM k\u00f3d felv\u00e1ltja az Intel \u00e1ltal \u00edrt kor\u00e1bbi verzi\u00f3t, \u00e9s megsz\u00fcnteti a m\u00e1r azonos\u00edtott probl\u00e9m\u00e1kat:<\/p>\n

\n

Ez a friss\u00edt\u00e9si csomag AES-GCM implement\u00e1ci\u00f3t ad a VAES \u00e9s AVX512\/AVX10 sz\u00e1m\u00e1ra (Galois\/Counter m\u00f3d), amely az AES-GCM teljes\u00edtm\u00e9ny\u00e9t ak\u00e1r 162%-kal is n\u00f6velheti. Tov\u00e1bb\u00e1, a r\u00e9gi Intel AES-NI GCM k\u00f3dot \u00faj k\u00f3dra cser\u00e9li, amely valamivel gyorsabb \u00e9s sz\u00e1mos probl\u00e9m\u00e1t jav\u00edt, bele\u00e9rtve a 250 KB-ot meghalad\u00f3 \u00f3ri\u00e1si bin\u00e1ris f\u00e1jl m\u00e9ret\u00e9t is. R\u00e9szletek a jav\u00edt\u00e1sokban tal\u00e1lhat\u00f3k.<\/p>\n<\/blockquote>\n

\n

Az x86_64 AES-GCM assembler k\u00f3d v\u00e9gs\u0151 \u00e1llapota az, hogy k\u00e9t assembler f\u00e1jlt kapunk: az egyik AES-NI k\u00f3dot gener\u00e1l AVX-szel vagy an\u00e9lk\u00fcl, a m\u00e1sik pedig VAES k\u00f3dot gener\u00e1l AVX512\/AVX10-nel, 256 bites vagy 512 bites vektorokkal. Ebben nincs t\u00e1mogat\u00e1s az egyes VAES (AVX512\/AVX10 n\u00e9lk\u00fcli) verzi\u00f3 sz\u00e1m\u00e1ra. Ez n\u00e9mileg elt\u00e9r att\u00f3l, amit az AES-XTS eset\u00e9ben csin\u00e1ltam, ahol egy f\u00e1jl AVX \u00e9s AVX512\/AVX10 k\u00f3dot gener\u00e1l, bele\u00e9rtve a VAES-t haszn\u00e1l\u00f3 k\u00f3dot (AVX512\/AVX10 n\u00e9lk\u00fcl), m\u00edg a m\u00e1sik f\u00e1jl csak nem AVX k\u00f3dot gener\u00e1l. Jelenleg azonban ez a megk\u00f6zel\u00edt\u00e9s t\u0171nik a helyes v\u00e1laszt\u00e1snak minden egyes algoritmushoz, figyelembe v\u00e9ve, hogy a 16 SIMD-regiszterre \u00e9s 128 bites vektorokra val\u00f3 korl\u00e1toz\u00e1s l\u00e9nyegesen elt\u00e9r\u0151 tervez\u00e9si megold\u00e1sokhoz vezetett az AES-GCM-ben, de nem annyira az AES-XTS eset\u00e9ben. A VAES-szel sz\u00e1ll\u00edtott processzorok is \u00e1tmeneti jelens\u00e9gnek t\u0171nnek, ez\u00e9rt lehet, hogy nem kellene t\u00fals\u00e1gosan er\u0151ltetn\u00fcnk ennek a kombin\u00e1ci\u00f3nak a t\u00e1mogat\u00e1s\u00e1t.<\/p>\n<\/blockquote>\n

Forr\u00e1s: linux.org.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

2 \u0438\u044e\u043d\u044f \u042d\u0440\u0438\u043a \u0411\u0438\u0433\u0433\u0435\u0440\u0441 (\u0438\u043d\u0436\u0435\u043d\u0435\u0440 \u0438\u0437 Google) \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b \u043d\u043e\u0432\u044b\u0435 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 AES-XTS \u0434\u043b\u044f \u0433\u043e\u0440\u0430\u0437\u0434\u043e \u0431\u043e\u043b\u0435\u0435 \u0432\u044b\u0441\u043e\u043a\u043e\u0439 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u043e\u0432 Intel\/AMD \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u043d\u043e\u0432\u044b\u0445 \u043d\u0430\u0431\u043e\u0440\u043e\u0432 \u043a\u043e\u0434\u0430 AES-NI + AVX, VAES + AVX2, VAES + AVX10\/256 \u0438 VAES + AVX10\/512. \u041a\u043e\u0434 AES-NI GCM \u0437\u0430\u043c\u0435\u043d\u044f\u0435\u0442 \u0441\u043e\u0431\u043e\u0439 \u043f\u0440\u0435\u0434\u044b\u0434\u0443\u0449\u0438\u0439, \u043d\u0430\u043f\u0438\u0441\u0430\u043d\u043d\u044b\u0439 Intel, \u0438 \u0443\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442 \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0435 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u043d\u044b\u0435 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u044b: «\u042d\u0442\u043e\u0442 \u043d\u0430\u0431\u043e\u0440 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0439 \u0434\u043e\u0431\u0430\u0432\u043b\u044f\u0435\u0442 \u0432 VAES […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":116367,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-116366","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\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\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Patchcsomag az AES-GCM titkos\u00edt\u00e1si\/dek\u00f3dol\u00e1si sebess\u00e9g\u00e9nek n\u00f6vel\u00e9s\u00e9re | ProHoster","description":"J\u00fanius 2-\u00e1n \u00c9ric Biggers (m\u00e9rn\u00f6k 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