{"id":150228,"date":"2025-12-01T17:11:56","date_gmt":"2025-12-01T15:11:56","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/deniel-bernshtejn-obnovil-biblioteku-cdb"},"modified":"2025-12-01T17:11:56","modified_gmt":"2025-12-01T15:11:56","slug":"deniel-bernshtejn-obnovil-biblioteku-cdb","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/deniel-bernshtejn-obnovil-biblioteku-cdb","title":{"rendered":"Daniel Bernstein aktualizoval knihovnu cdb","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Daniel J. Bernstein, renomovan\u00fd expert v oblasti kryptografie a v\u00fdvoje zabezpe\u010den\u00e9ho softwaru, kter\u00fd vytvo\u0159il projekty jako qmail, djbdns, NaCl, Ed25519, Curve25519 a ChaCha20-Poly1305, publikoval vyd\u00e1n\u00ed projektu cdb 20250121, kter\u00e9 nab\u00edz\u00ed form\u00e1t pro ukl\u00e1d\u00e1n\u00ed dat a p\u0159idru\u017eenou knihovnu pro integraci funkc\u00ed pro pr\u00e1ci s datab\u00e1zemi ve form\u00e1tu kl\u00ed\u010d\/hodnota do aplikac\u00ed. Toto vyd\u00e1n\u00ed bylo vytvo\u0159eno v\u00edce ne\u017e 25 let po posledn\u00ed aktualizaci cdb 0.75, kter\u00e1 byla vydan\u00e1 v \u00fanoru 2000.       <\/p>\n<p>V nov\u00e9 verzi byl implementov\u00e1n form\u00e1t cdb64, p\u0159elo\u017een\u00fd na struktury s 64bitov\u00fdmi typy. Na 64bitov\u00fdch platform\u00e1ch nov\u00fd form\u00e1t umo\u017e\u0148uje vytv\u00e1\u0159et datab\u00e1ze o velikosti a\u017e exabajtu (d\u0159\u00edve maxim\u00e1ln\u00ed velikost datab\u00e1ze nemohla p\u0159es\u00e1hnout 4 GB). Datab\u00e1ze je velmi kompaktn\u00ed a vyu\u017e\u00edv\u00e1 4096bajtovou hlavi\u010dku a 48 byt\u016f pomocn\u00fdch informac\u00ed na ka\u017ed\u00fd z\u00e1znam (pro 32bitovou variantu hlavi\u010dka 2048 a 24 byt\u016f na z\u00e1znam). P\u0159i p\u0159\u00edstupu k datab\u00e1zi se prov\u00e1d\u011bj\u00ed pouze dv\u011b operace p\u0159\u00edstupu na disk v p\u0159\u00edpad\u011b, \u017ee je kl\u00ed\u010d k dispozici, a jedna \u2014 pokud nen\u00ed. Podporov\u00e1na je atom\u00e1rn\u00ed v\u00fdm\u011bna datab\u00e1ze, odoln\u00e1 v\u016f\u010di havarijn\u00edm ukon\u010den\u00edm a neblokuj\u00edc\u00ed p\u0159\u00edstup k \u010dten\u00ed.        <\/p>\n<p>Dal\u0161\u00ed zm\u011bny:  <\/p>\n<ul>\n<li class=\"l\"> Podpora sestaven\u00ed pomoc\u00ed skriptu configure a instalace p\u0159\u00edkazem \u201emake install\u201c.\n<li class=\"l\">  Byla odstran\u011bna vazba testovac\u00edch sc\u00e9n\u00e1\u0159\u016f na csh.\n<li class=\"l\"> V\u0161echny vnit\u0159n\u00ed celo\u010d\u00edseln\u00e9 hodnoty byly nahrazeny typem \u201enum\u201c, definovan\u00fdm jako \u201elong long\u201c. Funkce uint32, fmt a scan byly nahrazeny funkcemi, kter\u00e9 pracuj\u00ed s typem num.\n<li class=\"l\"> Programov\u00e9 rozhran\u00ed pro pr\u00e1ci s buffery bylo rozd\u011bleno na inbuf a outbuf. Bylo provedeno vy\u010di\u0161t\u011bn\u00ed rozhran\u00ed hier.\n<li class=\"l\"> Z k\u00f3du byly odstran\u011bny definice nepou\u017e\u00edvan\u00fdch funkc\u00ed.\n<li class=\"l\"> Bylo zastaveno pou\u017e\u00edv\u00e1n\u00ed obklopov\u00e1n\u00ed, jako jsou str_len, alloc, uint32, exit, error a systype.\n<li class=\"l\"> K\u00f3d byl p\u0159epracov\u00e1n tak, aby se p\u0159estalo pou\u017e\u00edvat zastaral\u00e9 konstrukce v jazyce C, jako jsou star\u00fd styl definice funkc\u00ed, pr\u00e1zdn\u00e9 protokoly a star\u00fd styl definice main().\n<li class=\"l\"> Byly vyu\u017eity definice const a static.\n<li class=\"l\"> P\u0159i sestavov\u00e1n\u00ed byl aktivov\u00e1n p\u0159\u00edznak \u201e-Wall\u201c a k\u00f3d byl upraven za \u00fa\u010delem odstran\u011bn\u00ed varov\u00e1n\u00ed.\n<li class=\"l\"> P\u0159i kompilaci byly zahrnuty mo\u017enosti -fwrapv, -fno-delete-null-pointer-checks, -fno-strict-aliasing a -fno-strict-overflow.  <\/ul>\n<p>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=64352\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0414\u044d\u043d\u0438\u044d\u043b \u0411\u0435\u0440\u043d\u0448\u0442\u0435\u0439\u043d (Daniel J. Bernstein), \u0438\u0437\u0432\u0435\u0441\u0442\u043d\u044b\u0439 \u044d\u043a\u0441\u043f\u0435\u0440\u0442 \u0432 \u043e\u0431\u043b\u0430\u0441\u0442\u0438 \u043a\u0440\u0438\u043f\u0442\u043e\u0433\u0440\u0430\u0444\u0438\u0438 \u0438 \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u0437\u0430\u0449\u0438\u0449\u0451\u043d\u043d\u043e\u0433\u043e \u041f\u041e, \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0430\u0432\u0448\u0438\u0439 \u0442\u0430\u043a\u0438\u0435 \u043f\u0440\u043e\u0435\u043a\u0442\u044b, \u043a\u0430\u043a qmail, djbdns, NaCl, Ed25519, Curve25519 \u0438 ChaCha20-Poly1305, \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u0432\u044b\u043f\u0443\u0441\u043a \u043f\u0440\u043e\u0435\u043a\u0442\u0430 cdb 20250121, \u043f\u0440\u0435\u0434\u043b\u0430\u0433\u0430\u044e\u0449\u0435\u0433\u043e \u0444\u043e\u0440\u043c\u0430\u0442 \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u0434\u0430\u043d\u043d\u044b\u0445 \u0438 \u0441\u043e\u043f\u0443\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0443\u044e \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0443 \u0434\u043b\u044f \u0432\u0441\u0442\u0440\u0430\u0438\u0432\u0430\u043d\u0438\u044f \u0432 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f \u0444\u0443\u043d\u043a\u0446\u0438\u0439 \u0434\u043b\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u0441 \u0411\u0414 \u0432 \u0444\u043e\u0440\u043c\u0435 \u043a\u043b\u044e\u0447\/\u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435. \u0412\u044b\u043f\u0443\u0441\u043a \u0441\u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d \u0441\u043f\u0443\u0441\u0442\u044f \u0431\u043e\u043b\u0435\u0435 25 \u043b\u0435\u0442 [&hellip;]<\/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-150228","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0414\u044d\u043d\u0438\u044d\u043b \u0411\u0435\u0440\u043d\u0448\u0442\u0435\u0439\u043d (Daniel J.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/cs\/blog\/news\/deniel-bernshtejn-obnovil-biblioteku-cdb\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.3\" \/>\n\t\t<meta property=\"og:locale\" content=\"cs_CZ\" \/>\n\t\t<meta property=\"og:site_name\" content=\"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\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"\ud83e\udd47\u0414\u044d\u043d\u0438\u044d\u043b \u0411\u0435\u0440\u043d\u0448\u0442\u0435\u0439\u043d \u043e\u0431\u043d\u043e\u0432\u0438\u043b \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0443 cdb | ProHoster\" \/>\n\t\t<meta property=\"og:description\" content=\"\u0414\u044d\u043d\u0438\u044d\u043b \u0411\u0435\u0440\u043d\u0448\u0442\u0435\u0439\u043d (Daniel J.\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/prohoster.info\/cs\/blog\/news\/deniel-bernshtejn-obnovil-biblioteku-cdb\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:width\" content=\"350\" \/>\n\t\t<meta property=\"og:image:height\" content=\"350\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2025-12-01T15:11:56+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2025-12-01T15:11:56+00:00\" \/>\n\t\t<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"\ud83e\udd47Daniel J. 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