{"id":7786,"date":"2024-12-27T02:00:12","date_gmt":"2024-12-26T23:00:12","guid":{"rendered":"https:\/\/fatihsoysal.com\/blog\/sifreleme-sifreler-ozetler-tuz-ve-iv-baslangic-seviyesi\/"},"modified":"2024-12-27T02:00:12","modified_gmt":"2024-12-26T23:00:12","slug":"sifreleme-sifreler-ozetler-tuz-ve-iv-baslangic-seviyesi","status":"publish","type":"post","link":"https:\/\/fatihsoysal.com\/blog\/sifreleme-sifreler-ozetler-tuz-ve-iv-baslangic-seviyesi\/","title":{"rendered":"\u015eifreleme: \u015eifreler, \u00d6zetler, Tuz ve IV (Ba\u015flang\u0131\u00e7 Seviyesi)"},"content":{"rendered":"<p>\u015eifreleme: \u015eifreler, \u00d6zetler, Tuz ve IV (Ba\u015flang\u0131\u00e7 Seviyesi)<\/p>\n<p>Merhaba! Fatih Soysal olarak, bug\u00fcn size \u015fifreleme d\u00fcnyas\u0131na giri\u015f yapman\u0131za yard\u0131mc\u0131 olacak kapsaml\u0131 bir makale sunuyorum.  Bu makalede \u015fifreler, \u00f6zetler, tuz ve IV kavramlar\u0131n\u0131 a\u00e7\u0131klayacak ve bunlar\u0131n nas\u0131l \u00e7al\u0131\u015ft\u0131\u011f\u0131n\u0131, neden \u00f6nemli olduklar\u0131n\u0131 ve g\u00fcvenli\u011finiz i\u00e7in nas\u0131l kullan\u0131labileceklerini \u00f6\u011freneceksiniz.  Konuyu olabildi\u011fince anla\u015f\u0131l\u0131r k\u0131lmak i\u00e7in elimden gelenin en iyisini yapaca\u011f\u0131m.  \u00d6ncelikle temel kavramlar\u0131 ele alarak ilerleyece\u011fiz.<\/p>\n<h2>\u015eifreleme Nedir?<\/h2>\n<p>\u015eifreleme, verileri yetkisiz eri\u015fime kar\u015f\u0131 korumak i\u00e7in kullan\u0131lan bir i\u015flemdir.  Bu i\u015flem, okunabilir metni (a\u00e7\u0131k metin) \u015fifreli, anlams\u0131z bir metne (\u015fifreli metin) d\u00f6n\u00fc\u015ft\u00fcrmeyi i\u00e7erir.  Sadece yetkili ki\u015filer, \u015fifreleme anahtar\u0131n\u0131 kullanarak \u015fifreli metni tekrar a\u00e7\u0131k metne d\u00f6n\u00fc\u015ft\u00fcrebilirler. G\u00fcvenli ileti\u015fim ve veri depolama i\u00e7in \u015fifreleme olmazsa olmazd\u0131r.<\/p>\n<h2>\u015eifreler (Ciphers)<\/h2>\n<p>\u015eifreler, a\u00e7\u0131k metni \u015fifreli metne d\u00f6n\u00fc\u015ft\u00fcrmek i\u00e7in kullan\u0131lan algoritmalard\u0131r.  Bir\u00e7ok farkl\u0131 \u015fifreleme algoritmas\u0131 vard\u0131r ve bunlar genellikle simetrik ve asimetrik \u015fifreleme olarak ikiye ayr\u0131l\u0131r.<\/p>\n<ul>\n<li><strong>Simetrik \u015eifreleme:<\/strong> Hem \u015fifreleme hem de \u015fifre \u00e7\u00f6zme i\u015flemi i\u00e7in ayn\u0131 anahtar\u0131 kullan\u0131r.  AES (Advanced Encryption Standard) ve DES (Data Encryption Standard) yayg\u0131n olarak kullan\u0131lan simetrik \u015fifreleme \u00f6rnekleridir.<\/li>\n<li><strong>Asimetrik \u015eifreleme:<\/strong>  \u015eifreleme ve \u015fifre \u00e7\u00f6zme i\u00e7in farkl\u0131 anahtarlar kullan\u0131r; bir kamu anahtar\u0131 ve bir \u00f6zel anahtar.  RSA (Rivest-Shamir-Adleman) en yayg\u0131n asimetrik \u015fifreleme algoritmalar\u0131ndan biridir.  Asimetrik \u015fifreleme \u00f6zellikle anahtar da\u011f\u0131t\u0131m\u0131nda b\u00fcy\u00fck avantaj sa\u011flar.<\/li>\n<\/ul>\n<p>Do\u011fru \u015fifre se\u00e7imi, verilerinizin g\u00fcvenli\u011fi i\u00e7in son derece \u00f6nemlidir.  Son teknolojileri takip etmek ve g\u00fcncel \u015fifreleme standartlar\u0131n\u0131 kullanmak gerekir.  Yanl\u0131\u015f se\u00e7imler g\u00fcvenlik a\u00e7\u0131klar\u0131na yol a\u00e7abilir.<\/p>\n<h2>\u00d6zetler (Digests)<\/h2>\n<p>\u00d6zetler, verilerin b\u00fct\u00fcnl\u00fc\u011f\u00fcn\u00fc do\u011frulamak i\u00e7in kullan\u0131l\u0131r.  Bir \u00f6zet fonksiyonu, herhangi bir uzunluktaki veriyi sabit uzunlukta bir \u00f6zet de\u011fere d\u00f6n\u00fc\u015ft\u00fcr\u00fcr.  K\u00fc\u00e7\u00fck bir veri de\u011fi\u015fikli\u011fi bile \u00f6zet de\u011ferinde b\u00fcy\u00fck de\u011fi\u015fikliklere yol a\u00e7ar.  Bu \u00f6zellik, verilerin de\u011fi\u015ftirilip de\u011fi\u015ftirilmedi\u011fini kontrol etmemizi sa\u011flar.  MD5 ve SHA-256 yayg\u0131n olarak kullan\u0131lan \u00f6zet fonksiyonlar\u0131d\u0131r.  Ancak, MD5 art\u0131k g\u00fcvenli olarak kabul edilmez ve SHA-256 gibi daha g\u00fcvenli algoritmalar tercih edilmelidir.<\/p>\n<h2>Tuz (Salt)<\/h2>\n<p>Tuz, \u015fifreleri daha g\u00fcvenli hale getirmek i\u00e7in kullan\u0131lan rastgele bir veri dizisidir.  \u015eifreler do\u011frudan \u015fifrelenmez; \u00f6nce tuz ile birle\u015ftirilir ve sonra \u015fifrelenir. Bu, ayn\u0131 \u015fifreye sahip farkl\u0131 hesaplar\u0131n ayn\u0131 \u015fifreli de\u011fere sahip olmas\u0131n\u0131 \u00f6nler.  Tuzlama i\u015flemi, kaba kuvvet sald\u0131r\u0131lar\u0131na kar\u015f\u0131 direnci \u00f6nemli \u00f6l\u00e7\u00fcde art\u0131r\u0131r.  Her \u015fifre i\u00e7in farkl\u0131 bir tuz kullanmak idealdir.  Ayr\u0131ca, tuz, \u015fifrelenmi\u015f verilerle birlikte g\u00fcvenli bir \u015fekilde saklanmal\u0131d\u0131r.<\/p>\n<h2>IV (\u0130lk Vekt\u00f6r)<\/h2>\n<p>\u0130lk vekt\u00f6r (Initialization Vector), baz\u0131 \u015fifreleme modlar\u0131nda kullan\u0131lan bir rastgele veri blo\u011fudur.  Blok \u015fifreleme algoritmalar\u0131 her blo\u011fu ba\u011f\u0131ms\u0131z olarak \u015fifrelemez; IV, her blo\u011fun farkl\u0131 \u015fekilde \u015fifrelenmesini sa\u011flar.  Ayn\u0131 a\u00e7\u0131k metin farkl\u0131 IV&#8217;ler kullan\u0131larak tekrar tekrar \u015fifrelendi\u011finde, her zaman farkl\u0131 \u015fifreli metinler elde edilir.  Bu, tekrarlayan desenleri \u00f6nleyerek g\u00fcvenli\u011fi art\u0131r\u0131r. IV&#8217;ler her zaman rastgele se\u00e7ilmeli ve birden fazla kez kullan\u0131lmamal\u0131d\u0131r.<\/p>\n<h2>Sonu\u00e7<\/h2>\n<p>Bu makalede ele ald\u0131\u011f\u0131m\u0131z \u015fifreleme kavramlar\u0131, g\u00fcvenli yaz\u0131l\u0131m ve sistemler geli\u015ftirmek i\u00e7in olmazsa olmazd\u0131r.  \u015eifreleme, \u00f6zetleme, tuzlama ve IV kullan\u0131m\u0131, verilerinizi yetkisiz eri\u015fimden ve de\u011fi\u015ftirilmeden korumak i\u00e7in \u00f6nemli ad\u0131mlard\u0131r.  Daha detayl\u0131 bilgi i\u00e7in <a href=\"https:\/\/fatihsoysal.com\">web sitemi<\/a> ziyaret edebilirsiniz.  Ayr\u0131ca,  konu ile ilgili daha fazla bilgi edinmek i\u00e7in <a href=\"https:\/\/dev.to\/gliimly\/encryption-ciphers-digests-salt-iv-5j4\">bu \u0130ngilizce kayna\u011f\u0131<\/a> inceleyebilirsiniz.  Unutmay\u0131n, g\u00fcvenli\u011finiz i\u00e7in s\u00fcrekli \u00f6\u011frenmeye ve g\u00fcncel kalmaya \u00f6zen g\u00f6stermelisiniz!<\/p>\n<p><strong>#Etiketler:<\/strong> \u015eifreleme, \u015eifreler, \u00d6zetler, Tuz, IV, G\u00fcvenlik,  AES, DES, RSA, MD5, SHA-256, Simetrik \u015eifreleme, Asimetrik \u015eifreleme, Kriptografi<\/p>\n","protected":false},"excerpt":{"rendered":"\u015eifreleme: \u015eifreler, \u00d6zetler, Tuz ve IV (Ba\u015flang\u0131\u00e7 Seviyesi) Merhaba! Fatih Soysal olarak, bug\u00fcn size \u015fifreleme d\u00fcnyas\u0131na giri\u015f yapman\u0131za&hellip;","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"csco_page_header_type":"","csco_page_load_nextpost":"","csco_page_subscribe_form":"","csco_page_contact_form":"","footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-7786","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-genel","7":"cs-entry","8":"cs-video-wrap"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v20.5 (Yoast SEO v25.3.1) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u015eifreleme: \u015eifreler, \u00d6zetler, Tuz ve IV (Ba\u015flang\u0131\u00e7 Seviyesi)<\/title>\n<meta name=\"description\" content=\"Merhaba! Fatih Soysal olarak, bug\u00fcn size \u015fifreleme d\u00fcnyas\u0131na giri\u015f yapman\u0131za yard\u0131mc\u0131 olacak kapsaml\u0131 bir makale sunuyorum. Bu makalede \u015fifreler, \u00f6zetler, tuz ve IV kavramlar\u0131n\u0131 a\u00e7\u0131klayacak ve bunlar\u0131n nas\u0131l \u00e7al\u0131\u015ft\u0131\u011f\u0131n\u0131, neden \u00f6nemli olduklar\u0131n\u0131 ve g\u00fcvenli\u011finiz i\u00e7in nas\u0131l kullan\u0131labileceklerini \u00f6\u011freneceksiniz. Konuyu olabildi\u011fince anla\u015f\u0131l\u0131r k\u0131lmak i\u00e7in elimden gelenin en iyisini yapaca\u011f\u0131m. \u00d6ncelikle temel kavramlar\u0131 ele alarak ilerleyece\u011fiz.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/fatihsoysal.com\/blog\/sifreleme-sifreler-ozetler-tuz-ve-iv-baslangic-seviyesi\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u015eifreleme: \u015eifreler, \u00d6zetler, Tuz ve IV (Ba\u015flang\u0131\u00e7 Seviyesi)\" \/>\n<meta property=\"og:description\" content=\"Merhaba! Fatih Soysal olarak, bug\u00fcn size \u015fifreleme d\u00fcnyas\u0131na giri\u015f yapman\u0131za yard\u0131mc\u0131 olacak kapsaml\u0131 bir makale sunuyorum. Bu makalede \u015fifreler, \u00f6zetler, tuz ve IV kavramlar\u0131n\u0131 a\u00e7\u0131klayacak ve bunlar\u0131n nas\u0131l \u00e7al\u0131\u015ft\u0131\u011f\u0131n\u0131, neden \u00f6nemli olduklar\u0131n\u0131 ve g\u00fcvenli\u011finiz i\u00e7in nas\u0131l kullan\u0131labileceklerini \u00f6\u011freneceksiniz. Konuyu olabildi\u011fince anla\u015f\u0131l\u0131r k\u0131lmak i\u00e7in elimden gelenin en iyisini yapaca\u011f\u0131m. \u00d6ncelikle temel kavramlar\u0131 ele alarak ilerleyece\u011fiz.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/fatihsoysal.com\/blog\/sifreleme-sifreler-ozetler-tuz-ve-iv-baslangic-seviyesi\/\" \/>\n<meta property=\"og:site_name\" content=\"Kodlar\u0131n Gizemli D\u00fcnyas\u0131\" \/>\n<meta property=\"article:published_time\" content=\"2024-12-26T23:00:12+00:00\" \/>\n<meta name=\"author\" content=\"Fatih Soysal\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Yazan:\" \/>\n\t<meta name=\"twitter:data1\" content=\"Fatih Soysal\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tahmini okuma s\u00fcresi\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 dakika\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/sifreleme-sifreler-ozetler-tuz-ve-iv-baslangic-seviyesi\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/sifreleme-sifreler-ozetler-tuz-ve-iv-baslangic-seviyesi\/\"},\"author\":{\"name\":\"Fatih Soysal\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1\"},\"headline\":\"\u015eifreleme: \u015eifreler, \u00d6zetler, Tuz ve IV (Ba\u015flang\u0131\u00e7 Seviyesi)\",\"datePublished\":\"2024-12-26T23:00:12+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/sifreleme-sifreler-ozetler-tuz-ve-iv-baslangic-seviyesi\/\"},\"wordCount\":684,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1\"},\"inLanguage\":\"tr\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/fatihsoysal.com\/blog\/sifreleme-sifreler-ozetler-tuz-ve-iv-baslangic-seviyesi\/#respond\"]}],\"copyrightYear\":\"2024\",\"copyrightHolder\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#organization\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/sifreleme-sifreler-ozetler-tuz-ve-iv-baslangic-seviyesi\/\",\"url\":\"https:\/\/fatihsoysal.com\/blog\/sifreleme-sifreler-ozetler-tuz-ve-iv-baslangic-seviyesi\/\",\"name\":\"\u015eifreleme: \u015eifreler, \u00d6zetler, Tuz ve IV (Ba\u015flang\u0131\u00e7 Seviyesi)\",\"isPartOf\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#website\"},\"datePublished\":\"2024-12-26T23:00:12+00:00\",\"description\":\"Merhaba! Fatih Soysal olarak, bug\u00fcn size \u015fifreleme d\u00fcnyas\u0131na giri\u015f yapman\u0131za yard\u0131mc\u0131 olacak kapsaml\u0131 bir makale sunuyorum. Bu makalede \u015fifreler, \u00f6zetler, tuz ve IV kavramlar\u0131n\u0131 a\u00e7\u0131klayacak ve bunlar\u0131n nas\u0131l \u00e7al\u0131\u015ft\u0131\u011f\u0131n\u0131, neden \u00f6nemli olduklar\u0131n\u0131 ve g\u00fcvenli\u011finiz i\u00e7in nas\u0131l kullan\u0131labileceklerini \u00f6\u011freneceksiniz. 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Fatih Soysal olarak, bug\u00fcn size \u015fifreleme d\u00fcnyas\u0131na giri\u015f yapman\u0131za yard\u0131mc\u0131 olacak kapsaml\u0131 bir makale sunuyorum. Bu makalede \u015fifreler, \u00f6zetler, tuz ve IV kavramlar\u0131n\u0131 a\u00e7\u0131klayacak ve bunlar\u0131n nas\u0131l \u00e7al\u0131\u015ft\u0131\u011f\u0131n\u0131, neden \u00f6nemli olduklar\u0131n\u0131 ve g\u00fcvenli\u011finiz i\u00e7in nas\u0131l kullan\u0131labileceklerini \u00f6\u011freneceksiniz. Konuyu olabildi\u011fince anla\u015f\u0131l\u0131r k\u0131lmak i\u00e7in elimden gelenin en iyisini yapaca\u011f\u0131m. \u00d6ncelikle temel kavramlar\u0131 ele alarak ilerleyece\u011fiz.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/fatihsoysal.com\/blog\/sifreleme-sifreler-ozetler-tuz-ve-iv-baslangic-seviyesi\/","og_locale":"tr_TR","og_type":"article","og_title":"\u015eifreleme: \u015eifreler, \u00d6zetler, Tuz ve IV (Ba\u015flang\u0131\u00e7 Seviyesi)","og_description":"Merhaba! Fatih Soysal olarak, bug\u00fcn size \u015fifreleme d\u00fcnyas\u0131na giri\u015f yapman\u0131za yard\u0131mc\u0131 olacak kapsaml\u0131 bir makale sunuyorum. 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