\babel@toc {ngerman}{} \contentsline {chapter}{\numberline {1}Substitionsverfahren}{2}% \contentsline {section}{\numberline {1.1}Skytale}{2}% \contentsline {section}{\numberline {1.2}Monoalphabetische Substitionsverfahren}{2}% \contentsline {subsection}{\numberline {1.2.1}Caesar-Verschlüsselung}{3}% \contentsline {subsection}{\numberline {1.2.2}Häufigkeitsanalyse}{3}% \contentsline {section}{\numberline {1.3}Polyalphabetische Substitutionsverfahren}{3}% \contentsline {subsection}{\numberline {1.3.1}Vignère-Verfahren}{3}% \contentsline {subsubsection}{\numberline {1.3.1.1}Verschlüsselung}{3}% \contentsline {subsection}{\numberline {1.3.2}One-Time-Pad}{4}% \contentsline {subsubsection}{\numberline {1.3.2.1}Verschlüsselung}{4}% \contentsline {subsubsection}{\numberline {1.3.2.2}Perfekte Sicherheit}{4}% \contentsline {section}{\numberline {1.4}algebraische Substitionsverfahren}{4}% \contentsline {subsection}{\numberline {1.4.1}Hill-Verfahren}{4}% \contentsline {subsubsection}{\numberline {1.4.1.1}Verschlüsselung}{4}% \contentsline {subsubsection}{\numberline {1.4.1.2}Entschlüsselung}{4}%