{"id":10431,"date":"2025-01-23T18:30:13","date_gmt":"2025-01-23T15:30:13","guid":{"rendered":"https:\/\/fatihsoysal.com\/blog\/karma-isleme-hashing-nedir-ve-nasil-calisir\/"},"modified":"2025-01-23T18:30:13","modified_gmt":"2025-01-23T15:30:13","slug":"karma-isleme-hashing-nedir-ve-nasil-calisir","status":"publish","type":"post","link":"https:\/\/fatihsoysal.com\/blog\/karma-isleme-hashing-nedir-ve-nasil-calisir\/","title":{"rendered":"Karma \u0130\u015fleme (Hashing) Nedir ve Nas\u0131l \u00c7al\u0131\u015f\u0131r?"},"content":{"rendered":"<p>Karma \u0130\u015fleme (Hashing) Nedir ve Nas\u0131l \u00c7al\u0131\u015f\u0131r?<\/p>\n<p>Merhaba! Fatih Soysal olarak, bug\u00fcn sizlere karma i\u015fleme (hashing) konusunu detayl\u0131 bir \u015fekilde anlataca\u011f\u0131m.  Karma i\u015fleme, veri b\u00fct\u00fcnl\u00fc\u011f\u00fcn\u00fc sa\u011flamada ve veri yap\u0131lar\u0131 olu\u015fturmada kullan\u0131lan \u00f6nemli bir kriptografik tekniktir.  \u00d6ncelikle temel kavramlar\u0131 anlamakla ba\u015flayal\u0131m. Ard\u0131ndan, farkl\u0131 karma algoritmalar\u0131n\u0131 ve uygulamalar\u0131n\u0131 inceleyece\u011fiz.  Bu makalede, karma i\u015flemenin \u00e7al\u0131\u015fma prensiplerini, avantajlar\u0131n\u0131 ve dezavantajlar\u0131n\u0131 ele alaca\u011f\u0131z.  Ayr\u0131ca, g\u00fcvenlik a\u00e7\u0131s\u0131ndan \u00f6nemini ve yayg\u0131n kullan\u0131m alanlar\u0131n\u0131 da detayl\u0131 bir \u015fekilde a\u00e7\u0131klayaca\u011f\u0131m.<\/p>\n<h2>Karma \u0130\u015flemenin Temel Kavramlar\u0131<\/h2>\n<p>Karma i\u015fleme, herhangi bir boyutlu veriyi sabit boyutlu bir karma de\u011fere d\u00f6n\u00fc\u015ft\u00fcrme i\u015flemidir.  Bu d\u00f6n\u00fc\u015f\u00fcm, karma fonksiyonu ad\u0131 verilen \u00f6zel bir algoritma kullan\u0131larak ger\u00e7ekle\u015ftirilir.  Karma fonksiyonlar\u0131, girdi verisine ba\u011fl\u0131 olarak tekil bir \u00e7\u0131kt\u0131 \u00fcretir.  Yani, ayn\u0131 girdi verisi her zaman ayn\u0131 karma de\u011ferini \u00fcretir.  Ancak, farkl\u0131 girdi verileri farkl\u0131 karma de\u011ferleri \u00fcretebilir.  Bu \u00f6zellik, karma i\u015flemenin veri b\u00fct\u00fcnl\u00fc\u011f\u00fcn\u00fc do\u011frulamada kullan\u0131lmas\u0131n\u0131 sa\u011flar.  \u00d6rne\u011fin, bir dosyan\u0131n karma de\u011feri hesaplanarak, dosyan\u0131n daha sonraki bir zamanda de\u011fi\u015ftirilip de\u011fi\u015ftirilmedi\u011fi kontrol edilebilir.<\/p>\n<p>\u00d6zetle, karma i\u015fleme; verinin \u00f6zetini \u00e7\u0131karma, veri b\u00fct\u00fcnl\u00fc\u011f\u00fcn\u00fc do\u011frulama ve h\u0131zl\u0131 arama i\u015flemlerini ger\u00e7ekle\u015ftirme gibi \u00e7e\u015fitli g\u00f6revlerde kullan\u0131l\u0131r.  Bu sayede, b\u00fcy\u00fck veri k\u00fcmeleri \u00fczerindeki i\u015flemler daha verimli hale gelir.<\/p>\n<h2>Farkl\u0131 Karma Algoritmalar\u0131<\/h2>\n<p>Bir\u00e7ok farkl\u0131 karma algoritmas\u0131 mevcuttur.  Bunlardan baz\u0131lar\u0131 \u015funlard\u0131r: MD5, SHA-1, SHA-256, SHA-512 ve bcrypt.  Her algoritman\u0131n kendi g\u00fcvenlik seviyesi ve performans \u00f6zellikleri vard\u0131r.  MD5 ve SHA-1 gibi daha eski algoritmalar, g\u00fcn\u00fcm\u00fcz\u00fcn geli\u015fmi\u015f hesaplama g\u00fcc\u00fc kar\u015f\u0131s\u0131nda art\u0131k g\u00fcvenli kabul edilmemektedir.  Bu nedenle, yeni projelerde SHA-256 veya SHA-512 gibi daha g\u00fcvenli algoritmalar tercih edilmelidir.  Bcrypt ise \u00f6zellikle parola karma i\u015flemesinde kullan\u0131lan \u00f6zel bir algoritmad\u0131r.  G\u00fcvenli\u011fi ve performans\u0131n\u0131 dengelemeyi ama\u00e7layan bu algoritma,  sald\u0131r\u0131lara kar\u015f\u0131 daha dayan\u0131kl\u0131d\u0131r.<\/p>\n<p>Algoritma se\u00e7imi, projenin g\u00fcvenlik gereksinimlerine ve performans beklentilerine ba\u011fl\u0131 olarak yap\u0131lmal\u0131d\u0131r.  \u00d6nemli verilerin g\u00fcvenli\u011fini sa\u011flamak i\u00e7in, her zaman g\u00fcncel ve g\u00fcvenli kabul edilen algoritmalar\u0131 kullanmak \u00f6nemlidir.<\/p>\n<h2>Karma \u0130\u015flemenin Uygulama Alanlar\u0131<\/h2>\n<p>Karma i\u015fleme, bir\u00e7ok farkl\u0131 alanda kullan\u0131l\u0131r.  Bunlardan baz\u0131lar\u0131 \u015funlard\u0131r:<\/p>\n<ul>\n<li><strong>Veri b\u00fct\u00fcnl\u00fc\u011f\u00fc do\u011frulama:<\/strong> Dosyalar\u0131n veya verilerin de\u011fi\u015ftirilip de\u011fi\u015ftirilmedi\u011fini kontrol etmek i\u00e7in kullan\u0131l\u0131r.<\/li>\n<li><strong>Parola g\u00fcvenli\u011fi:<\/strong> Parolalar\u0131 do\u011frudan saklamak yerine, karma de\u011ferlerini saklamak g\u00fcvenli\u011fi art\u0131r\u0131r.<\/li>\n<li><strong>Dijital imzalar:<\/strong> Belge veya verilerin orijinalli\u011fini ve b\u00fct\u00fcnl\u00fc\u011f\u00fcn\u00fc do\u011frulamak i\u00e7in kullan\u0131l\u0131r.<\/li>\n<li><strong>Veri tabanlar\u0131nda h\u0131zl\u0131 arama:<\/strong> Karma tablolar\u0131, verileri h\u0131zl\u0131 bir \u015fekilde aramak i\u00e7in kullan\u0131l\u0131r.<\/li>\n<li><strong>Blok zinciri teknolojisi:<\/strong> Blok zinciri i\u015flemlerinin g\u00fcvenli\u011fini ve b\u00fct\u00fcnl\u00fc\u011f\u00fcn\u00fc sa\u011flamak i\u00e7in kullan\u0131l\u0131r.<\/li>\n<\/ul>\n<p>Bu alanlarda kullan\u0131lan karma algoritmalar\u0131 do\u011fru se\u00e7mek, sistemin g\u00fcvenli\u011fi i\u00e7in olduk\u00e7a \u00f6nemlidir. Yanl\u0131\u015f algoritma se\u00e7imi, sistemin g\u00fcvenlik a\u00e7\u0131klar\u0131na yol a\u00e7abilir.<\/p>\n<h2>Karma \u00c7at\u0131\u015fmalar\u0131 (Collisions)<\/h2>\n<p>Farkl\u0131 girdilerin ayn\u0131 karma de\u011ferini \u00fcretmesi durumuna karma \u00e7at\u0131\u015fmas\u0131 denir.  Karma fonksiyonlar\u0131n\u0131n tasar\u0131m\u0131, \u00e7at\u0131\u015fma olas\u0131l\u0131\u011f\u0131n\u0131 minimize etmeye y\u00f6neliktir.  Ancak, m\u00fckemmel bir karma fonksiyonu yoktur ve yeterli miktarda deneme ile \u00e7at\u0131\u015fma bulmak her zaman m\u00fcmk\u00fcnd\u00fcr.  Bu nedenle, g\u00fcvenlik a\u00e7\u0131s\u0131ndan,  g\u00fcvenilir algoritmalar se\u00e7mek ve gerekti\u011finde karma uzunlu\u011funu art\u0131rmak \u00f6nemlidir.  Karma \u00e7at\u0131\u015fmalar\u0131, g\u00fcvenlik a\u00e7\u0131klar\u0131na yol a\u00e7abilece\u011fi i\u00e7in dikkatlice ele al\u0131nmal\u0131d\u0131r.<\/p>\n<h2>Sonu\u00e7<\/h2>\n<p>Karma i\u015fleme, veri g\u00fcvenli\u011fi ve verimlili\u011fi i\u00e7in son derece \u00f6nemli bir tekniktir.  Do\u011fru algoritman\u0131n se\u00e7imi ve uygulanmas\u0131, sistemin g\u00fcvenli\u011fini ve performans\u0131n\u0131 do\u011frudan etkiler.  Bu makalede ele ald\u0131\u011f\u0131m\u0131z konular, karma i\u015fleme hakk\u0131nda daha derinlemesine bir anlay\u0131\u015f sa\u011flamay\u0131 ama\u00e7lamaktad\u0131r.  Daha fazla bilgi i\u00e7in, <a href=\"https:\/\/fatihsoysal.com\">fatihsoysal.com<\/a> web sitesini ziyaret edebilirsiniz.  Ayr\u0131ca, konu ile ilgili daha fazla bilgi edinmek i\u00e7in  <a href=\"https:\/\/dev.to\/nozibul_islam_113b1d5334f\/hashing-2ghm\">bu kayna\u011fa<\/a> da g\u00f6z atabilirsiniz.<\/p>\n<p>Umar\u0131m bu makale faydal\u0131 olmu\u015ftur.  Sorular\u0131n\u0131z veya eklemek istedi\u011finiz noktalar varsa, l\u00fctfen yorum yapmaktan \u00e7ekinmeyin!<\/p>\n<p>#Etiketler: Karma \u0130\u015fleme, Hashing, MD5, SHA-1, SHA-256, SHA-512, Bcrypt, Veri B\u00fct\u00fcnl\u00fc\u011f\u00fc, G\u00fcvenlik, Kriptografi, Algoritma, Karma \u00c7at\u0131\u015fmas\u0131, Veri Taban\u0131, Blok Zinciri<\/p>\n","protected":false},"excerpt":{"rendered":"Karma \u0130\u015fleme (Hashing) Nedir ve Nas\u0131l \u00c7al\u0131\u015f\u0131r? Merhaba! Fatih Soysal olarak, bug\u00fcn sizlere karma i\u015fleme (hashing) konusunu detayl\u0131&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-10431","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>Karma \u0130\u015fleme (Hashing) Nedir ve Nas\u0131l \u00c7al\u0131\u015f\u0131r?<\/title>\n<meta name=\"description\" content=\"Merhaba! Fatih Soysal olarak, bug\u00fcn sizlere karma i\u015fleme (hashing) konusunu detayl\u0131 bir \u015fekilde anlataca\u011f\u0131m. Karma i\u015fleme, veri b\u00fct\u00fcnl\u00fc\u011f\u00fcn\u00fc sa\u011flamada ve veri yap\u0131lar\u0131 olu\u015fturmada kullan\u0131lan \u00f6nemli bir kriptografik tekniktir. \u00d6ncelikle temel kavramlar\u0131 anlamakla ba\u015flayal\u0131m. Ard\u0131ndan, farkl\u0131 karma algoritmalar\u0131n\u0131 ve uygulamalar\u0131n\u0131 inceleyece\u011fiz. Bu makalede, karma i\u015flemenin \u00e7al\u0131\u015fma prensiplerini, avantajlar\u0131n\u0131 ve dezavantajlar\u0131n\u0131 ele alaca\u011f\u0131z. Ayr\u0131ca, g\u00fcvenlik a\u00e7\u0131s\u0131ndan \u00f6nemini ve yayg\u0131n kullan\u0131m alanlar\u0131n\u0131 da detayl\u0131 bir \u015fekilde a\u00e7\u0131klayaca\u011f\u0131m.\" \/>\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\/karma-isleme-hashing-nedir-ve-nasil-calisir\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Karma \u0130\u015fleme (Hashing) Nedir ve Nas\u0131l \u00c7al\u0131\u015f\u0131r?\" \/>\n<meta property=\"og:description\" content=\"Merhaba! Fatih Soysal olarak, bug\u00fcn sizlere karma i\u015fleme (hashing) konusunu detayl\u0131 bir \u015fekilde anlataca\u011f\u0131m. Karma i\u015fleme, veri b\u00fct\u00fcnl\u00fc\u011f\u00fcn\u00fc sa\u011flamada ve veri yap\u0131lar\u0131 olu\u015fturmada kullan\u0131lan \u00f6nemli bir kriptografik tekniktir. \u00d6ncelikle temel kavramlar\u0131 anlamakla ba\u015flayal\u0131m. Ard\u0131ndan, farkl\u0131 karma algoritmalar\u0131n\u0131 ve uygulamalar\u0131n\u0131 inceleyece\u011fiz. Bu makalede, karma i\u015flemenin \u00e7al\u0131\u015fma prensiplerini, avantajlar\u0131n\u0131 ve dezavantajlar\u0131n\u0131 ele alaca\u011f\u0131z. Ayr\u0131ca, g\u00fcvenlik a\u00e7\u0131s\u0131ndan \u00f6nemini ve yayg\u0131n kullan\u0131m alanlar\u0131n\u0131 da detayl\u0131 bir \u015fekilde a\u00e7\u0131klayaca\u011f\u0131m.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/fatihsoysal.com\/blog\/karma-isleme-hashing-nedir-ve-nasil-calisir\/\" \/>\n<meta property=\"og:site_name\" content=\"Kodlar\u0131n Gizemli D\u00fcnyas\u0131\" \/>\n<meta property=\"article:published_time\" content=\"2025-01-23T15:30:13+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=\"4 dakika\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/karma-isleme-hashing-nedir-ve-nasil-calisir\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/karma-isleme-hashing-nedir-ve-nasil-calisir\/\"},\"author\":{\"name\":\"Fatih Soysal\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1\"},\"headline\":\"Karma \u0130\u015fleme (Hashing) Nedir ve Nas\u0131l \u00c7al\u0131\u015f\u0131r?\",\"datePublished\":\"2025-01-23T15:30:13+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/karma-isleme-hashing-nedir-ve-nasil-calisir\/\"},\"wordCount\":791,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1\"},\"inLanguage\":\"tr\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/fatihsoysal.com\/blog\/karma-isleme-hashing-nedir-ve-nasil-calisir\/#respond\"]}],\"copyrightYear\":\"2025\",\"copyrightHolder\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#organization\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/karma-isleme-hashing-nedir-ve-nasil-calisir\/\",\"url\":\"https:\/\/fatihsoysal.com\/blog\/karma-isleme-hashing-nedir-ve-nasil-calisir\/\",\"name\":\"Karma \u0130\u015fleme (Hashing) Nedir ve Nas\u0131l \u00c7al\u0131\u015f\u0131r?\",\"isPartOf\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#website\"},\"datePublished\":\"2025-01-23T15:30:13+00:00\",\"description\":\"Merhaba! Fatih Soysal olarak, bug\u00fcn sizlere karma i\u015fleme (hashing) konusunu detayl\u0131 bir \u015fekilde anlataca\u011f\u0131m. Karma i\u015fleme, veri b\u00fct\u00fcnl\u00fc\u011f\u00fcn\u00fc sa\u011flamada ve veri yap\u0131lar\u0131 olu\u015fturmada kullan\u0131lan \u00f6nemli bir kriptografik tekniktir. \u00d6ncelikle temel kavramlar\u0131 anlamakla ba\u015flayal\u0131m. Ard\u0131ndan, farkl\u0131 karma algoritmalar\u0131n\u0131 ve uygulamalar\u0131n\u0131 inceleyece\u011fiz. Bu makalede, karma i\u015flemenin \u00e7al\u0131\u015fma prensiplerini, avantajlar\u0131n\u0131 ve dezavantajlar\u0131n\u0131 ele alaca\u011f\u0131z. 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Fatih Soysal olarak, bug\u00fcn sizlere karma i\u015fleme (hashing) konusunu detayl\u0131 bir \u015fekilde anlataca\u011f\u0131m. Karma i\u015fleme, veri b\u00fct\u00fcnl\u00fc\u011f\u00fcn\u00fc sa\u011flamada ve veri yap\u0131lar\u0131 olu\u015fturmada kullan\u0131lan \u00f6nemli bir kriptografik tekniktir. \u00d6ncelikle temel kavramlar\u0131 anlamakla ba\u015flayal\u0131m. Ard\u0131ndan, farkl\u0131 karma algoritmalar\u0131n\u0131 ve uygulamalar\u0131n\u0131 inceleyece\u011fiz. Bu makalede, karma i\u015flemenin \u00e7al\u0131\u015fma prensiplerini, avantajlar\u0131n\u0131 ve dezavantajlar\u0131n\u0131 ele alaca\u011f\u0131z. 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