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[o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Logga in</span></a></li> </ul> </div> </div> <div id="p-user-menu-anon-editor" class="vector-menu mw-portlet mw-portlet-user-menu-anon-editor" > <div class="vector-menu-heading"> Sidor för utloggade redigerare <a href="/wiki/Hj%C3%A4lp:Introduktion" aria-label="Läs mer om redigering"><span>läs mer</span></a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anoncontribs" class="mw-list-item"><a href="/wiki/Special:Mina_bidrag" title="En lista över redigeringar från denna IP-adress [y]" accesskey="y"><span>Bidrag</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Special:Min_diskussion" title="Diskussion om redigeringar från det här IP-numret [n]" accesskey="n"><span>Diskussion</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Webbplats"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Innehåll" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Innehåll</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">flytta till sidofältet</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">dölj</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">Inledning</div> </a> </li> <li id="toc-Se_även" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Se_även"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Se även</span> </div> </a> <ul id="toc-Se_även-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Innehåll" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Växla innehållsförteckningen" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Växla innehållsförteckningen</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Förskjutningschiffer</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Gå till en artikel på ett annat språk. Tillgänglig på 33 språk" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-33" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">33 språk</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%AA%D8%B9%D9%85%D9%8A%D8%A9_%D8%A8%D8%A7%D9%84%D8%A5%D8%B9%D8%A7%D8%B6%D8%A9" title="تعمية بالإعاضة – arabiska" lang="ar" hreflang="ar" data-title="تعمية بالإعاضة" data-language-autonym="العربية" data-language-local-name="arabiska" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%AA%E0%A7%8D%E0%A6%B0%E0%A6%A4%E0%A6%BF%E0%A6%B8%E0%A7%8D%E0%A6%A5%E0%A6%BE%E0%A6%AA%E0%A6%A8_%E0%A6%B8%E0%A6%BE%E0%A6%87%E0%A6%AB%E0%A6%BE%E0%A6%B0" title="প্রতিস্থাপন সাইফার – bengali" lang="bn" hreflang="bn" data-title="প্রতিস্থাপন সাইফার" data-language-autonym="বাংলা" data-language-local-name="bengali" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Xifratge_per_substituci%C3%B3" title="Xifratge per substitució – katalanska" lang="ca" hreflang="ca" data-title="Xifratge per substitució" data-language-autonym="Català" data-language-local-name="katalanska" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Substitu%C4%8Dn%C3%AD_%C5%A1ifra" title="Substituční šifra – tjeckiska" lang="cs" hreflang="cs" data-title="Substituční šifra" data-language-autonym="Čeština" data-language-local-name="tjeckiska" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Monoalphabetische_Substitution" title="Monoalphabetische Substitution – tyska" lang="de" hreflang="de" data-title="Monoalphabetische Substitution" data-language-autonym="Deutsch" data-language-local-name="tyska" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Substitution_cipher" title="Substitution cipher – engelska" lang="en" hreflang="en" data-title="Substitution cipher" data-language-autonym="English" data-language-local-name="engelska" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Cifrado_por_sustituci%C3%B3n" title="Cifrado por sustitución – spanska" lang="es" hreflang="es" data-title="Cifrado por sustitución" data-language-autonym="Español" data-language-local-name="spanska" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%B1%D9%85%D8%B2%D9%86%DA%AF%D8%A7%D8%B1%DB%8C_%D8%AC%D8%A7%D9%86%D8%B4%DB%8C%D9%86%DB%8C" title="رمزنگاری جانشینی – persiska" lang="fa" hreflang="fa" data-title="رمزنگاری جانشینی" data-language-autonym="فارسی" data-language-local-name="persiska" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Chiffrement_par_substitution" title="Chiffrement par substitution – franska" lang="fr" hreflang="fr" data-title="Chiffrement par substitution" data-language-autonym="Français" data-language-local-name="franska" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%B9%98%ED%99%98_%EC%95%94%ED%98%B8" title="치환 암호 – koreanska" lang="ko" hreflang="ko" data-title="치환 암호" data-language-autonym="한국어" data-language-local-name="koreanska" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Sandi_substitusi" title="Sandi substitusi – indonesiska" lang="id" hreflang="id" data-title="Sandi substitusi" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonesiska" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Cifrario_a_sostituzione" title="Cifrario a sostituzione – italienska" lang="it" hreflang="it" data-title="Cifrario a sostituzione" data-language-autonym="Italiano" data-language-local-name="italienska" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A6%D7%95%D7%A4%D7%9F_%D7%94%D7%97%D7%9C%D7%A4%D7%94" title="צופן החלפה – hebreiska" lang="he" hreflang="he" data-title="צופן החלפה" data-language-autonym="עברית" data-language-local-name="hebreiska" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%A9%E1%83%90%E1%83%9C%E1%83%90%E1%83%AA%E1%83%95%E1%83%9A%E1%83%94%E1%83%91%E1%83%90%E1%83%93%E1%83%98_%E1%83%A8%E1%83%98%E1%83%A4%E1%83%A0%E1%83%98" title="ჩანაცვლებადი შიფრი – georgiska" lang="ka" hreflang="ka" data-title="ჩანაცვლებადი შიფრი" data-language-autonym="ქართული" data-language-local-name="georgiska" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Helyettes%C3%ADt%C5%91_rejtjel" title="Helyettesítő rejtjel – ungerska" lang="hu" hreflang="hu" data-title="Helyettesítő rejtjel" data-language-autonym="Magyar" data-language-local-name="ungerska" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Sifer_penggantian" title="Sifer penggantian – malajiska" lang="ms" hreflang="ms" data-title="Sifer penggantian" data-language-autonym="Bahasa Melayu" data-language-local-name="malajiska" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Substitutieversleuteling" title="Substitutieversleuteling – nederländska" lang="nl" hreflang="nl" data-title="Substitutieversleuteling" data-language-autonym="Nederlands" data-language-local-name="nederländska" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E6%8F%9B%E5%AD%97%E5%BC%8F%E6%9A%97%E5%8F%B7" title="換字式暗号 – japanska" lang="ja" hreflang="ja" data-title="換字式暗号" data-language-autonym="日本語" data-language-local-name="japanska" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Substitusjonschiffer" title="Substitusjonschiffer – norskt bokmål" lang="nb" hreflang="nb" data-title="Substitusjonschiffer" data-language-autonym="Norsk bokmål" data-language-local-name="norskt bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Szyfr_podstawieniowy" title="Szyfr podstawieniowy – polska" lang="pl" hreflang="pl" data-title="Szyfr podstawieniowy" data-language-autonym="Polski" data-language-local-name="polska" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Cifra_de_substitui%C3%A7%C3%A3o" title="Cifra de substituição – portugisiska" lang="pt" hreflang="pt" data-title="Cifra de substituição" data-language-autonym="Português" data-language-local-name="portugisiska" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Cifrul_substitu%C8%9Biei" title="Cifrul substituției – rumänska" lang="ro" hreflang="ro" data-title="Cifrul substituției" data-language-autonym="Română" data-language-local-name="rumänska" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%A8%D0%B8%D1%84%D1%80_%D0%BF%D0%BE%D0%B4%D1%81%D1%82%D0%B0%D0%BD%D0%BE%D0%B2%D0%BA%D0%B8" title="Шифр подстановки – ryska" lang="ru" hreflang="ru" data-title="Шифр подстановки" data-language-autonym="Русский" data-language-local-name="ryska" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-si mw-list-item"><a href="https://si.wikipedia.org/wiki/%E0%B7%83%E0%B7%93%E0%B7%83%E0%B6%BB%E0%B7%8A_%E0%B6%9A%E0%B7%9A%E0%B6%AD%E0%B7%8F%E0%B6%82%E0%B6%9A%E0%B6%BA" title="සීසර් කේතාංකය – singalesiska" lang="si" hreflang="si" data-title="සීසර් කේතාංකය" data-language-autonym="සිංහල" data-language-local-name="singalesiska" class="interlanguage-link-target"><span>සිංහල</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Substitution_cipher" title="Substitution cipher – Simple English" lang="en-simple" hreflang="en-simple" data-title="Substitution cipher" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Substit%C3%BAcia_(kryptografia)" title="Substitúcia (kryptografia) – slovakiska" lang="sk" hreflang="sk" data-title="Substitúcia (kryptografia)" data-language-autonym="Slovenčina" data-language-local-name="slovakiska" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Zamenjalna_%C5%A1ifra" title="Zamenjalna šifra – slovenska" lang="sl" hreflang="sl" data-title="Zamenjalna šifra" data-language-autonym="Slovenščina" data-language-local-name="slovenska" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Korvaussalaus" title="Korvaussalaus – finska" lang="fi" hreflang="fi" data-title="Korvaussalaus" data-language-autonym="Suomi" data-language-local-name="finska" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-te mw-list-item"><a href="https://te.wikipedia.org/wiki/%E0%B0%B8%E0%B0%AC%E0%B1%8D%E0%B0%B8%E0%B1%8D%E0%B0%9F%E0%B0%BF%E0%B0%9F%E0%B1%8D%E0%B0%AF%E0%B1%82%E0%B0%B7%E0%B0%A8%E0%B1%8D_%E0%B0%B8%E0%B1%88%E0%B0%AB%E0%B0%B0%E0%B1%8D" title="సబ్స్టిట్యూషన్ సైఫర్ – telugu" lang="te" hreflang="te" data-title="సబ్స్టిట్యూషన్ సైఫర్" data-language-autonym="తెలుగు" data-language-local-name="telugu" class="interlanguage-link-target"><span>తెలుగు</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Yerine_koyma_%C5%9Fifrelemesi" title="Yerine koyma şifrelemesi – turkiska" lang="tr" hreflang="tr" data-title="Yerine koyma şifrelemesi" data-language-autonym="Türkçe" data-language-local-name="turkiska" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9F%D1%96%D0%B4%D1%81%D1%82%D0%B0%D0%BD%D0%BE%D0%B2%D0%BE%D1%87%D0%BD%D0%B8%D0%B9_%D1%88%D0%B8%D1%84%D1%80" title="Підстановочний шифр – ukrainska" lang="uk" hreflang="uk" data-title="Підстановочний шифр" data-language-autonym="Українська" data-language-local-name="ukrainska" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E6%9B%BF%E4%BB%A3%E6%B3%95" title="替代法 – kantonesiska" lang="yue" hreflang="yue" data-title="替代法" data-language-autonym="粵語" data-language-local-name="kantonesiska" class="interlanguage-link-target"><span>粵語</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E6%9B%BF%E6%8D%A2%E5%BC%8F%E5%AF%86%E7%A0%81" title="替换式密码 – kinesiska" lang="zh" hreflang="zh" data-title="替换式密码" data-language-autonym="中文" data-language-local-name="kinesiska" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q626500#sitelinks-wikipedia" title="Redigera interwikilänkar" class="wbc-editpage">Redigera länkar</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Namnrymder"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/F%C3%B6rskjutningschiffer" title="Visa innehållssidan [c]" accesskey="c"><span>Artikel</span></a></li><li id="ca-talk" class="vector-tab-noicon mw-list-item"><a href="/wiki/Diskussion:F%C3%B6rskjutningschiffer" rel="discussion" title="Diskussion om innehållssidan [t]" accesskey="t"><span>Diskussion</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Ändra språkvariant" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">svenska</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="Visningar"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/F%C3%B6rskjutningschiffer"><span>Läs</span></a></li><li id="ca-ve-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=F%C3%B6rskjutningschiffer&veaction=edit" title="Redigera denna sida [v]" accesskey="v"><span>Redigera</span></a></li><li id="ca-edit" class="collapsible vector-tab-noicon mw-list-item"><a href="/w/index.php?title=F%C3%B6rskjutningschiffer&action=edit" title="Redigera wikitexten för den här sidan [e]" accesskey="e"><span>Redigera 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alternativ" > <div class="vector-menu-heading"> Åtgärder </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="selected vector-more-collapsible-item mw-list-item"><a href="/wiki/F%C3%B6rskjutningschiffer"><span>Läs</span></a></li><li id="ca-more-ve-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=F%C3%B6rskjutningschiffer&veaction=edit" title="Redigera denna sida [v]" accesskey="v"><span>Redigera</span></a></li><li id="ca-more-edit" class="collapsible vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=F%C3%B6rskjutningschiffer&action=edit" title="Redigera wikitexten för den här sidan [e]" accesskey="e"><span>Redigera wikitext</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=F%C3%B6rskjutningschiffer&action=history"><span>Visa historik</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> Allmänt </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Special:L%C3%A4nkar_hit/F%C3%B6rskjutningschiffer" title="Lista över alla wikisidor som länkar hit [j]" accesskey="j"><span>Sidor som länkar hit</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Special:Senaste_relaterade_%C3%A4ndringar/F%C3%B6rskjutningschiffer" rel="nofollow" title="Visa senaste ändringarna av sidor som den här sidan länkar till [k]" accesskey="k"><span>Relaterade ändringar</span></a></li><li id="t-specialpages" class="mw-list-item"><a href="/wiki/Special:Specialsidor" title="Lista över alla specialsidor [q]" accesskey="q"><span>Specialsidor</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=F%C3%B6rskjutningschiffer&oldid=51533826" title="Permanent länk till den här versionen av sidan"><span>Permanent länk</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=F%C3%B6rskjutningschiffer&action=info" title="Mer information om denna sida"><span>Sidinformation</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Special:Citera&page=F%C3%B6rskjutningschiffer&id=51533826&wpFormIdentifier=titleform" title="Information om hur den här artikeln kan användas som referens"><span>Använd som referens</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Special:UrlShortener&url=https%3A%2F%2Fsv.wikipedia.org%2Fwiki%2FF%25C3%25B6rskjutningschiffer"><span>Hämta förkortad url</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Special:QrCode&url=https%3A%2F%2Fsv.wikipedia.org%2Fwiki%2FF%25C3%25B6rskjutningschiffer"><span>Ladda ner QR-kod</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Skriv ut/exportera </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-create_a_book" class="mw-list-item"><a href="/w/index.php?title=Special:Bok&bookcmd=book_creator&referer=F%C3%B6rskjutningschiffer"><span>Skapa en bok</span></a></li><li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Special:DownloadAsPdf&page=F%C3%B6rskjutningschiffer&action=show-download-screen"><span>Ladda ned som PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=F%C3%B6rskjutningschiffer&printable=yes" title="Utskriftsvänlig version av den här sidan [p]" accesskey="p"><span>Utskriftsvänlig version</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> På andra projekt </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q626500" title="Länk till anslutet databasobjekt [g]" accesskey="g"><span>Wikidata-objekt</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Sidverktyg"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Utseende"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Utseende</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">flytta till sidofältet</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">dölj</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">Från Wikipedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="sv" dir="ltr"><style data-mw-deduplicate="TemplateStyles:r51224235">.mw-parser-output table.ambox{margin:0 10%;border-collapse:collapse;background:#fbfbfb;border:1px solid #aaa;border-left:10px solid #608ec2}.mw-parser-output table.ambox th.ambox-text,.mw-parser-output table.ambox td.ambox-text{padding:.25em .5em;width:100%}.mw-parser-output table.ambox td.ambox-image{padding:2px 0 2px .5em;text-align:center;vertical-align:middle}.mw-parser-output table.ambox td.ambox-imageright{padding:2px 4px 2px 0;text-align:center;vertical-align:middle}.mw-parser-output table.ambox-notice{border-left:10px solid #608ec2}.mw-parser-output table.ambox-delete,.mw-parser-output table.ambox-serious{border-left:10px solid #b22222}.mw-parser-output table.ambox-content{border-left:10px solid #f28500}.mw-parser-output table.ambox-style{border-left:10px solid #f4c430}.mw-parser-output table.ambox-merge{border-left:10px solid #9932cc}.mw-parser-output table.ambox-protection{border-left:10px solid #bba}.mw-parser-output .ambox+link+.ambox{border-top-width:0}.mw-parser-output .messagebox{border:1px solid #aaaaaa;background-color:#f8f9fa;width:80%;margin:0 auto 1em auto;padding:.2em}.mw-parser-output .messagebox.merge{border:1px solid #c0b8cc;background-color:#f0e5ff;text-align:center}.mw-parser-output .messagebox.cleanup{border:1px solid #9f9fff;background-color:#efefff;text-align:center}.mw-parser-output .messagebox.standard-talk{border:1px solid #c0c090;background-color:#f8eaba}.mw-parser-output .messagebox.nested-talk{border:1px solid #c0c090;background-color:#f8eaba;width:100%;margin:2px 4px}</style><table class="metadata ambox ambox-content" style=""> <tbody><tr> <td class="ambox-image"> <div style="width:52px;"><span typeof="mw:File"><a href="/wiki/Fil:Question_book-4.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/64/Question_book-4.svg/40px-Question_book-4.svg.png" decoding="async" width="40" height="31" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/64/Question_book-4.svg/60px-Question_book-4.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/64/Question_book-4.svg/80px-Question_book-4.svg.png 2x" data-file-width="262" data-file-height="204" /></a></span></div></td> <td class="ambox-text">Den här artikeln <b>behöver <a href="/wiki/Wikipedia:K%C3%A4llh%C3%A4nvisningar" title="Wikipedia:Källhänvisningar">källhänvisningar</a> för att kunna <a href="/wiki/Wikipedia:Verifierbarhet" title="Wikipedia:Verifierbarhet">verifieras</a>.</b> <small>(2020-01)</small> <br /><small>Åtgärda genom att lägga till pålitliga källor (<a href="/wiki/Wikipedia:Introduktion_till_k%C3%A4llh%C3%A4nvisningar" title="Wikipedia:Introduktion till källhänvisningar">gärna som fotnoter</a>). Uppgifter utan källhänvisning kan <a href="/wiki/Mall:K%C3%A4lla_beh%C3%B6vs" title="Mall:Källa behövs">ifrågasättas</a> och tas bort utan att det behöver diskuteras på <a href="/wiki/Diskussion:F%C3%B6rskjutningschiffer" title="Diskussion:Förskjutningschiffer">diskussionssidan</a>.</small></td> </tr> </tbody></table> <p><b>Förskjutningschiffer</b> är en mycket enkel typ av <a href="/wiki/Chiffer" class="mw-redirect" title="Chiffer">chiffer</a> som åstadkommas genom att man placerar två rader med <a href="/wiki/Alfabet" title="Alfabet">alfabet</a> över varandra. Genom att förskjuta den nedre raden till exempel fem steg ersätts A med F, B med G osv. I detta fall ersätts texten CHIFFER med HMNKKJW. För att <a href="/wiki/Kryptering" title="Kryptering">dekryptera</a> texten gör man samma operation i motsatt riktning. </p> <pre>A B C D E F G H I J K L M N O P Q R S T U V W X Y Z F G H I J K L M N O P Q R S T U V W X Y Z A B C D E </pre> <p>Som för alla chiffer behövs en <a href="/wiki/Chiffernyckel" class="mw-redirect" title="Chiffernyckel">chiffernyckel</a>, men den blir i detta fall mycket enkel, det räcker med siffran, i detta fall "5". </p><p>Ett klassiskt exempel på denna metod är <i><a href="/wiki/Caesarchiffer" title="Caesarchiffer">Caesar-chiffret</a></i>, så benämnt eftersom det användes av antikens <a href="/wiki/Gaius_Julius_Caesar" class="mw-redirect" title="Gaius Julius Caesar">Gaius Julius Caesar</a> i sin hemliga korrespondens. Han använde nyckeln 3 = C, hans egen <a href="/wiki/Initial" title="Initial">initial</a>. </p><p>Denna sorts chiffer är inte speciellt hållfast. Med lite träning kan den chiffrerade texten läsas nästan lika bra som vanlig <a href="/wiki/Klartext" title="Klartext">klartext</a>, och det är synnerligen enkelt att återskapa nyckeln, om man vet hur man gör. </p><p>Betydligt svårare blir det om man använder en cykliskt varierande förskjutning, till exempel med chiffernyckeln 58293, som förskjuter första bokstaven 5 steg, andra 8 steg, tredje 2 steg, fjärde 9 steg och femte 3 steg, därefter börjar man om på fem steg och så vidare. </p><p>Ännu svårare blir det om man använder en matematisk funktion för att skapa förskjutningarna. Detta kallas för <a href="/w/index.php?title=Str%C3%B6mchiffer&action=edit&redlink=1" class="new" title="Strömchiffer [inte skriven än]">strömchiffer</a>, och är särskilt lämpat för elektronisk kommunikation eftersom det är enkelt att bygga en <a href="/wiki/Elektrisk_krets" title="Elektrisk krets">elektrisk krets</a> som matar ut en förskjutning i princip med samma hastighet som en klartext kan matas in i den, och kretsen behöver väldigt begränsat minne. De första maskinerna för att kryptera telegrafi utvecklades på 1920-talet, och idag används strömchiffer i <a href="/wiki/GSM" title="GSM">GSM</a>. </p><p>Om cykeln är har slumpmässig förskjutning, dess längd är minst lika lång som klartexten och den aldrig återanvänds får man ett <a href="/wiki/Eng%C3%A5ngskrypto" class="mw-redirect" title="Engångskrypto">engångskrypto</a>, som inte kan dekrypteras då den slumpmässiga förskjutningen innebär att det enda man kan veta om klartexten är dess längd. </p> <div class="mw-heading mw-heading2"><h2 id="Se_även"><span id="Se_.C3.A4ven"></span>Se även</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=F%C3%B6rskjutningschiffer&veaction=edit&section=1" title="Redigera avsnitt: Se även" class="mw-editsection-visualeditor"><span>redigera</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=F%C3%B6rskjutningschiffer&action=edit&section=1" title="Redigera avsnitts källkod: Se även"><span>redigera wikitext</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Rot13" class="mw-redirect" title="Rot13">Rot13</a></li></ul> <style data-mw-deduplicate="TemplateStyles:r56287950">.mw-parser-output table.navbox{border:#aaa 1px solid;width:100%;margin:auto;margin-top:1em;clear:both;font-size:88%;text-align:center;padding:1px}.mw-parser-output link+table.navbox{margin-top:-1px}.mw-parser-output .navbox-title,.mw-parser-output .navbox-abovebelow,.mw-parser-output table.navbox th{text-align:center;padding-left:1em;padding-right:1em}.mw-parser-output .navbox-thlinkcolor .navbox-title button,.mw-parser-output .navbox-thlinkcolor .navbox-title .mw-collapsible-text,.mw-parser-output .navbox-thlinkcolor .navbox-title a{color:inherit}.mw-parser-output .nowraplinks a,.mw-parser-output .nowraplinks .selflink{white-space:nowrap}.mw-parser-output .navbox-group{white-space:nowrap;text-align:right;font-weight:bold;padding-left:1em;padding-right:1em}.mw-parser-output .navbox,.mw-parser-output .navbox-subgroup{background:#fdfdfd}.mw-parser-output .navbox-list{border-color:#fdfdfd}.mw-parser-output .navbox-title,.mw-parser-output table.navbox th{background:#b0c4de}.mw-parser-output .navbox-abovebelow,.mw-parser-output .navbox-group,.mw-parser-output .navbox-subgroup .navbox-title{background:#d0e0f5}.mw-parser-output .navbox-subgroup .navbox-group,.mw-parser-output .navbox-subgroup .navbox-abovebelow{background:#deeafa}.mw-parser-output .navbox-even{background:#f7f7f7}.mw-parser-output .navbox-odd{background:transparent}</style><table class="navbox" style="border-spacing:0; ;"><tbody><tr><td style="padding:2px;"><table class="collapsible autocollapse" style="width:100%;border-spacing:0;background:transparent;color:inherit;;"><tbody><tr><th style=";" colspan="3" class="navbox-title"><div style="float:left; width:3em;text-align:left;"><div class="noprint plainlinks" style="background-color:transparent; padding:0; white-space:nowrap; font-weight:normal; font-size:80%; border:none;; color: inherit;"><a href="/wiki/Mall:Underr%C3%A4ttelseverksamhet" title="Mall:Underrättelseverksamhet"><span title="Visa denna mall" style="border:none;;">v</span></a> <span style="font-size:80%;">•</span> <a class="external text" href="https://sv.wikipedia.org/w/index.php?title=Mall:Underr%C3%A4ttelseverksamhet&action=edit"><span style="border:none;;" title="Redigera den här mallen">r</span></a></div></div><span style="font-size:110%;"><a href="/wiki/Underr%C3%A4ttelseverksamhet" title="Underrättelseverksamhet">Underrättelseverksamhet</a></span></th></tr><tr style="height:2px;"><td></td></tr><tr><td class="navbox-group" style=";;"><a href="/wiki/Kategori:Milit%C3%A4r_underr%C3%A4ttelseverksamhet" title="Kategori:Militär underrättelseverksamhet">Militär underrättelseverksamhet‎</a><br />och <a href="/wiki/Kategori:Underr%C3%A4ttelseorgan" title="Kategori:Underrättelseorgan">underrättelseorgan</a></td><td style="text-align:left;border-left:2px solid #fdfdfd;width:100%;padding:0px;;;" class="navbox-list navbox-odd"><div style="padding:0em 0.25em"><a href="/wiki/Fj%C3%A4rrspaning" title="Fjärrspaning">Fjärrspaning</a><span style="font-weight:bold;"> · </span><a href="/wiki/Kontraspionage" title="Kontraspionage">Kontraspionage</a><span style="font-weight:bold;"> · </span><a href="/wiki/S%C3%A4kerhetspr%C3%B6vning" title="Säkerhetsprövning">Säkerhetsprövning</a><span style="font-weight:bold;"> · </span><a href="/wiki/S%C3%A4kerhetstj%C3%A4nst" title="Säkerhetstjänst">Säkerhetstjänst</a><br /><a href="/wiki/Lista_%C3%B6ver_underr%C3%A4ttelseorganisationer" title="Lista över underrättelseorganisationer">Lista över underrättelseorganisationer</a><span style="font-weight:bold;"> · </span><small><b>Frankrike</b>: <a href="/wiki/Direction_G%C3%A9n%C3%A9rale_de_la_S%C3%A9curit%C3%A9_Ext%C3%A9rieure" class="mw-redirect" title="Direction Générale de la Sécurité Extérieure">Direction Générale de la Sécurité Extérieure</a><span style="font-weight:bold;"> · </span><b>Israel</b>: <a href="/wiki/Mossad" title="Mossad">Mossad</a><span style="font-weight:bold;"> · </span><b>Ryssland/Sovjetunionen</b>: <a href="/wiki/GRU" title="GRU">GRU</a><span style="font-weight:bold;"> · </span><a href="/wiki/KGB" title="KGB">KGB‎</a><span style="font-weight:bold;"> · </span><a href="/wiki/Ryska_federationens_yttre_underr%C3%A4ttelsetj%C3%A4nst" title="Ryska federationens yttre underrättelsetjänst">Ryska federationens yttre underrättelsetjänst</a><span style="font-weight:bold;"> · </span><b>Storbritannien</b>: <a href="/wiki/Security_Service" title="Security Service">Security Service</a><span style="font-weight:bold;"> · </span><a href="/wiki/Secret_Intelligence_Service" title="Secret Intelligence Service">Secret Intelligence Service</a><span style="font-weight:bold;"> · </span><b>Sverige</b>: <a href="/wiki/F%C3%B6rsvarets_radioanstalt" title="Försvarets radioanstalt">Försvarets radioanstalt</a><span style="font-weight:bold;"> · </span><a href="/wiki/Milit%C3%A4ra_underr%C3%A4ttelse-_och_s%C3%A4kerhetstj%C3%A4nsten" title="Militära underrättelse- och säkerhetstjänsten">Militära underrättelse- och säkerhetstjänsten</a><span style="font-weight:bold;"> · </span><a href="/wiki/S%C3%A4kerhetspolisen" title="Säkerhetspolisen">Säkerhetspolisen</a><span style="font-weight:bold;"> · </span><b>Tyskland</b>: <a href="/wiki/Bundesnachrichtendienst" title="Bundesnachrichtendienst">Bundesnachrichtendienst</a><span style="font-weight:bold;"> · </span><a href="/wiki/Gestapo" title="Gestapo">Gestapo‎</a><span style="font-weight:bold;"> · </span><a href="/wiki/Ministeriet_f%C3%B6r_statss%C3%A4kerhet" title="Ministeriet för statssäkerhet">Stasi‎</a><span style="font-weight:bold;"> · </span><b>USA</b>: <a href="/wiki/Central_Intelligence_Agency" title="Central Intelligence Agency">Central Intelligence Agency</a><span style="font-weight:bold;"> · </span><a href="/wiki/National_Security_Agency" title="National Security Agency">National Security Agency</a><span style="font-weight:bold;"> · </span><a href="/wiki/USA:s_underr%C3%A4ttelsegemenskap" title="USA:s underrättelsegemenskap">USA:s underrättelsegemenskap</a></small></div></td><td style="width:0%;padding:0px 0px 0px 2px;" rowspan="9"><span typeof="mw:File"><a href="/wiki/Fil:With_Lawrence_in_Arabia.jpg" class="mw-file-description" title="Lawrence av Arabien"><img alt="Lawrence av Arabien" src="//upload.wikimedia.org/wikipedia/commons/thumb/1/1b/With_Lawrence_in_Arabia.jpg/80px-With_Lawrence_in_Arabia.jpg" decoding="async" width="80" height="107" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/1b/With_Lawrence_in_Arabia.jpg/120px-With_Lawrence_in_Arabia.jpg 1.5x, 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title="Kryptoanalys">Kryptoanalys</a><span style="font-weight:bold;"> · </span><a href="/wiki/Steganografi" title="Steganografi">Steganografi</a></div></td></tr><tr style="height:2px"><td></td></tr><tr><td class="navbox-group" style=";;"><a href="/wiki/Kategori:Spioneri" title="Kategori:Spioneri">Spioneri</a> och <a href="/wiki/Kategori:Spioner" title="Kategori:Spioner">spioner</a></td><td style="text-align:left;border-left:2px solid #fdfdfd;width:100%;padding:0px;;;" class="navbox-list navbox-odd"><div style="padding:0em 0.25em"><a href="/wiki/Dubbelagent" class="mw-redirect" title="Dubbelagent">Dubbelagent</a><span style="font-weight:bold;"> · </span><a href="/wiki/HUMINT" title="HUMINT">HUMINT</a><span style="font-weight:bold;"> · </span><a href="/wiki/Infiltrering" title="Infiltrering">Infiltrering</a><span style="font-weight:bold;"> · </span><a href="/wiki/Informationsl%C3%A4cka" title="Informationsläcka">Informationsläcka</a><span style="font-weight:bold;"> · </span><a 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