{"id":294,"date":"2021-03-01T10:02:22","date_gmt":"2021-03-01T09:02:22","guid":{"rendered":"https:\/\/blogs.uni-bremen.de\/verschluesselung\/?page_id=294"},"modified":"2022-10-26T16:04:52","modified_gmt":"2022-10-26T14:04:52","slug":"caesar","status":"publish","type":"page","link":"https:\/\/blogs.uni-bremen.de\/verschluesselung\/grundlagen\/caesar\/","title":{"rendered":"Caesar"},"content":{"rendered":"<p><div class=\"et_d4_element et_pb_section et_pb_section_0  et_pb_css_mix_blend_mode et_pb_fullwidth_section et_section_regular et_block_section\" >\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<section class=\"et_pb_module et_d4_element et_pb_fullwidth_header et_pb_fullwidth_header_0  et_pb_css_mix_blend_mode et_pb_text_align_left et_pb_bg_layout_dark\">\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<div class=\"et_pb_fullwidth_header_container left\">\n\t\t\t\t\t<div class=\"header-content-container center\">\n\t\t\t\t\t<div class=\"header-content\">\n\t\t\t\t\t\t\n\t\t\t\t\t\t<h1 class=\"et_pb_module_header\">Grundlagen<\/h1>\n\t\t\t\t\t\t<span class=\"et_pb_fullwidth_header_subhead\">Caesar-Chiffre<\/span>\n\t\t\t\t\t\t<div class=\"et_pb_header_content_wrapper\"><\/div>\n\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"et_pb_fullwidth_header_overlay\"><\/div>\n\t\t\t\t<div class=\"et_pb_fullwidth_header_scroll\"><\/div>\n\t\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div><div class=\"et_d4_element et_pb_section et_pb_section_1  et_pb_css_mix_blend_mode et_pb_fullwidth_section et_section_regular et_block_section\" >\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<div class=\"et_pb_module et_d4_element et_pb_fullwidth_image et_pb_fullwidth_image_0\">\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1999\" height=\"366\" src=\"https:\/\/blogs.uni-bremen.de\/verschluesselung\/files\/freestocks-vcPtHBqHnKk-unsplash_headerzuschnitt_verkleinert.png\" alt=\"\" title=\"freestocks-vcPtHBqHnKk-unsplash_headerzuschnitt_verkleinert\" srcset=\"https:\/\/blogs.uni-bremen.de\/verschluesselung\/files\/freestocks-vcPtHBqHnKk-unsplash_headerzuschnitt_verkleinert.png 1999w, https:\/\/blogs.uni-bremen.de\/verschluesselung\/files\/freestocks-vcPtHBqHnKk-unsplash_headerzuschnitt_verkleinert-1280x234.png 1280w, https:\/\/blogs.uni-bremen.de\/verschluesselung\/files\/freestocks-vcPtHBqHnKk-unsplash_headerzuschnitt_verkleinert-980x179.png 980w, https:\/\/blogs.uni-bremen.de\/verschluesselung\/files\/freestocks-vcPtHBqHnKk-unsplash_headerzuschnitt_verkleinert-480x88.png 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) and (max-width: 1280px) 1280px, (min-width: 1281px) 1999px, 100vw\" class=\"wp-image-339\" \/>\n\t\t\t\n\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div><div class=\"et_d4_element et_pb_section et_pb_section_2  et_pb_css_mix_blend_mode et_section_specialty et_pb_section--with-menu et_block_section\" >\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<div class=\"et_pb_row et_block_row et_d4_element\">\n\t\t\t\t<div class=\"et_d4_element et_pb_column_3_4 et_pb_column et_pb_column_0   et_pb_specialty_column  et_pb_css_mix_blend_mode et_block_column\">\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<div class=\"et_d4_element et_pb_row_inner et_pb_row_inner_0  et_pb_css_mix_blend_mode et_block_row\">\n\t\t\t\t<div class=\"et_pb_column et_pb_column_4_4 et_d4_element et_pb_column_inner et_pb_column_inner_0  et_pb_css_mix_blend_mode et-last-child et_block_column\">\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<div class=\"et_pb_module et_d4_element et_pb_text et_pb_text_0  et_pb_text_align_left et_pb_bg_layout_light\">\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<div class=\"et_pb_text_inner\"><p>Um eine Verschl\u00fcsselung vorzunehmen muss aber nicht unbedingt ein komplett neuer Zeichensatz verwendet werden. Auch innerhalb des selben Alphabets lassen sich solche Substitutionen umsetzen. Ein einfaches Verfahren ist die Caesar-Verschl\u00fcsselung , welche dem Namen nach bereits von Caesar zur geheimen \u00dcbermittlung von Nachrichten verwendet wurde. Dabei gibt der Schl\u00fcssel (in Form eines Buchstabens) an um wie viele Zeichen das Alphabet verschoben wird. Als praktisches Hilfsmittel kann eine Chiffrierscheibe eingesetzt werden. Diese besteht aus zwei Ringen, der \u00e4u\u00dfere Ring stellt das Klartextalphabet und der innere Ring das Schl\u00fcsselalphabet dar. Es ist also vergleichbar mit unserer vorherigen Tabelle, allerdings arbeiten wir hier auf nur einem Alphabet und k\u00f6nnen 25 verschiedene Schl\u00fcssel verwenden. Dieser Schl\u00fcssel, also der Buchstabe dem das A des Klartextalphabets zugeordnet wird, muss dann nur dem Gespr\u00e4chspartner \u00fcbermittelt werden.<\/p><\/div>\n\t\t\t<\/div><div class=\"et_pb_module et_d4_element et_pb_text et_pb_text_1  et_pb_text_align_left et_pb_bg_layout_light\">\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<div class=\"et_pb_text_inner\"><p><div class=\"h5p-content\" data-content-id=\"2\"><\/div><br \/>Quelle: Al Sweigart, <a href=\"https:\/\/inventwithpython.com\/\" target=\"_blank\" rel=\"noopener\">https:\/\/inventwithpython.com\/<\/a><\/p>\n<p>&nbsp;<\/p><\/div>\n\t\t\t<\/div><div class=\"et_pb_module et_d4_element et_pb_text et_pb_text_2  et_pb_text_align_left et_pb_bg_layout_light\">\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<div class=\"et_pb_text_inner\"><p><code><div class=\"h5p-iframe-wrapper\"><iframe id=\"h5p-iframe-4\" class=\"h5p-iframe\" data-content-id=\"4\" style=\"height:1px\" src=\"about:blank\" frameBorder=\"0\" scrolling=\"no\" title=\"Caesar-Quiz\"><\/iframe><\/div><\/code><\/p><\/div>\n\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t<\/div><div class=\"et_d4_element et_pb_column_1_4 et_pb_column et_pb_column_1    et_pb_css_mix_blend_mode et_pb_column--with-menu et_block_column\">\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<div class=\"et_pb_module et_d4_element et_pb_menu et_pb_menu_0 et_pb_menu_vert et_pb_bg_layout_light  et_pb_text_align_left et_dropdown_animation_fade et_pb_menu--without-logo et_pb_menu--style-left_aligned\">\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t<div class=\"et_pb_menu_inner_container clearfix\">\n\t\t\t\t\t\t\n\t\t\t\t\t\t<div class=\"et_pb_menu__wrap\">\n\t\t\t\t\t\t\t<div class=\"et_pb_menu__menu\">\n\t\t\t\t\t\t\t\t<nav class=\"et-menu-nav\"><ul id=\"menu-grundlagen\" class=\"et-menu nav\"><li id=\"menu-item-304\" class=\"et_pb_menu_page_id-200 menu-item menu-item-type-post_type menu-item-object-page menu-item-304\"><a href=\"https:\/\/blogs.uni-bremen.de\/verschluesselung\/grundlagen\/\">1. Einf\u00fchrung<\/a><\/li>\n<li id=\"menu-item-314\" class=\"et_pb_menu_page_id-294 menu-item menu-item-type-post_type menu-item-object-page menu-item-314\"><a href=\"https:\/\/blogs.uni-bremen.de\/verschluesselung\/grundlagen\/caesar\/\">2. Caesar-Chiffre<\/a><\/li>\n<li id=\"menu-item-421\" class=\"et_pb_menu_page_id-414 menu-item menu-item-type-post_type menu-item-object-page menu-item-421\"><a href=\"https:\/\/blogs.uni-bremen.de\/verschluesselung\/grundlagen\/symmetrisch\/\">3. Symmetrische Verschl\u00fcsselung<\/a><\/li>\n<li id=\"menu-item-505\" class=\"et_pb_menu_page_id-496 menu-item menu-item-type-post_type menu-item-object-page menu-item-505\"><a href=\"https:\/\/blogs.uni-bremen.de\/verschluesselung\/grundlagen\/diffie-hellman-schluesseltausch\/\">4. Diffie-Hellman-Schl\u00fcsseltausch<\/a><\/li>\n<\/ul><\/nav>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t<div class=\"et_mobile_nav_menu\">\n\t\t\t\t<div class=\"mobile_nav closed\">\n\t\t\t\t\t<span class=\"mobile_menu_bar\"><\/span>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div><div class=\"et_pb_module et_d4_element et_pb_text et_pb_text_3  et_pb_text_align_left et_pb_bg_layout_light\">\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<div class=\"et_pb_text_inner\"><p>Lizenz: <a href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\" target=\"_blank\" rel=\"noopener\">CC BY 4.0 International<\/a><br \/>Autor: Dennis Sch\u00fcrholz<br \/>Diese Lizenzangabe bezieht sich ausschlie\u00dflich auf diese Unterseite. Allgemeine Angaben sind <a href=\"https:\/\/blogs.uni-bremen.de\/verschluesselung\/lizenzen\/\">hier<\/a> zu finden.<\/p><\/div>\n\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t<\/div><div class=\"et_d4_element et_pb_section et_pb_section_3  et_pb_css_mix_blend_mode et_section_regular et_block_section\" >\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<div class=\"et_d4_element et_pb_row et_pb_row_0  et_pb_css_mix_blend_mode et_block_row\">\n\t\t\t\t<div class=\"et_d4_element et_pb_column_4_4 et_pb_column et_pb_column_2  et_pb_css_mix_blend_mode et-last-child et_block_column\">\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<div class=\"et_pb_module et_d4_element et_pb_divider et_pb_divider_0 et_pb_space\"><div class=\"et_pb_divider_internal\"><\/div><\/div>\n\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div><div class=\"et_d4_element et_pb_row et_pb_row_1  et_pb_css_mix_blend_mode et_block_row\">\n\t\t\t\t<div class=\"et_d4_element et_pb_column_1_4 et_pb_column et_pb_column_3  et_pb_css_mix_blend_mode et_block_column\">\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<div class=\"et_pb_module et_d4_element et_pb_text et_pb_text_4 et_clickable  et_pb_text_align_left et_pb_bg_layout_light\">\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<div class=\"et_pb_text_inner\"><p style=\"text-align: center\"><strong>Hier geht deine Entdeckungsreise weiter im n\u00e4chsten Abschnitt!<\/strong><\/p><\/div>\n\t\t\t<\/div>\n\t\t\t<\/div><div class=\"et_d4_element et_pb_column_1_4 et_pb_column et_pb_column_4  et_pb_css_mix_blend_mode et_block_column\">\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<div class=\"et_pb_module et_d4_element et_pb_text et_pb_text_5 et_clickable  et_pb_text_align_left et_pb_bg_layout_light\">\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<div class=\"et_pb_text_inner\"><p style=\"text-align: center\"><strong>Hier gelangst du zum vorherigen Thema: <\/strong><strong>\"Warum verschl\u00fcsseln?\"!<\/strong><\/p><\/div>\n\t\t\t<\/div>\n\t\t\t<\/div><div class=\"et_d4_element et_pb_column_1_4 et_pb_column et_pb_column_5  et_pb_css_mix_blend_mode et_block_column\">\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<div class=\"et_pb_module et_d4_element et_pb_text et_pb_text_6 et_clickable  et_pb_text_align_left et_pb_bg_layout_light\">\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<div class=\"et_pb_text_inner\"><p style=\"text-align: center\"><strong>Du befindest dich im zweiten Modul: \"Grundlagen\"<\/strong><\/p><\/div>\n\t\t\t<\/div>\n\t\t\t<\/div><div class=\"et_d4_element et_pb_column_1_4 et_pb_column et_pb_column_6  et_pb_css_mix_blend_mode et-last-child et_block_column\">\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<div class=\"et_pb_module et_d4_element et_pb_text et_pb_text_7 et_clickable  et_pb_text_align_left et_pb_bg_layout_light\">\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<div class=\"et_pb_text_inner\"><p style=\"text-align: center\"><strong>Hier gelangst du direkt zum letzten Thema: \"Anwendung im Alltag\"!<\/strong><\/p><\/div>\n\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":3102,"featured_media":0,"parent":200,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_total_topic_count_hidden":0,"_bbp_total_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"class_list":["post-294","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/blogs.uni-bremen.de\/verschluesselung\/wp-json\/wp\/v2\/pages\/294","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.uni-bremen.de\/verschluesselung\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/blogs.uni-bremen.de\/verschluesselung\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.uni-bremen.de\/verschluesselung\/wp-json\/wp\/v2\/users\/3102"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.uni-bremen.de\/verschluesselung\/wp-json\/wp\/v2\/comments?post=294"}],"version-history":[{"count":10,"href":"https:\/\/blogs.uni-bremen.de\/verschluesselung\/wp-json\/wp\/v2\/pages\/294\/revisions"}],"predecessor-version":[{"id":510,"href":"https:\/\/blogs.uni-bremen.de\/verschluesselung\/wp-json\/wp\/v2\/pages\/294\/revisions\/510"}],"up":[{"embeddable":true,"href":"https:\/\/blogs.uni-bremen.de\/verschluesselung\/wp-json\/wp\/v2\/pages\/200"}],"wp:attachment":[{"href":"https:\/\/blogs.uni-bremen.de\/verschluesselung\/wp-json\/wp\/v2\/media?parent=294"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}