File:Cascade MAC algorithm.svg
Summary
| Description |
English: This algorithm is similar to the NMAC construction and uses a block encryption algorithm to create a MAC . In this case, the key is only used for the first encryption while the following steps use the previously generated ciphertext blocks .
Deutsch: Dieser Algorithmus ähnelt der NMAC-Konstruktion und nutzt ein Blockkryptosystem , um einen MAC zu erzeugen. In diesem Fall wird der Schlüssel nur für den ersten Verschlüsselungsschritt genutzt, während die folgenden Schritte die zuvor generierten Chiffretextblöcke als Schlüssel nutzen. |
| Date | |
| Source | Own work |
| Author | Sn KGS |
Diese Abbildung ist, wie viele andere, während einer Kryptographie-Vorlesung für Lehramts-Studierende im Wintersemester 2020/2021 an der Christian-Albrechts-Universität zu Kiel entstanden. Einige dieser Bilder beziehen sich ausschließlich auf Fallbeispiele aus der Vorlesung.
SVG development
Category:Valid SVG created with LaTeX code#Cascade%20MAC%20algorithm.svgThe resulting file was further processed with sed.
Source code
LaTeX code
\documentclass{standalone}
\usepackage{pgffor} %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\usepackage{ifthen} % This image is part of a large %
\usepackage{pgfplots} % collection of diagrams. Some %
\usepackage{libertineRoman} % or all of the used packages %
\usepackage{biolinum} % may not be necessary to com- %
\usepackage{fontawesome5} % pile this specific file but %
\usepackage{epsdice} % vital for others. Sorry for %
\usepackage{mathtools} % any inconvenience. -- Sn KGS %
\usepackage{amsfonts} %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\newcommand{\highlight}[1]{\textbf{\textsf{#1}}}
\newcommand{\todo}[1]{\textbf{\color{red}TODO: #1}}
\newcommand{\drawrand}{\ensuremath{\xleftarrow{\mathcal{R}}}}
\usetikzlibrary{decorations.pathreplacing}
\pgfplotsset{compat=1.17}
\begin{document}
\begin{tikzpicture}
[thick, algo/.style={draw, rectangle, minimum height=1cm, minimum width=1cm}]
\node (k) at (2,3) {$k$};
\node (m) at (9,8) {$m$};
\node (t) at (10,-2) {$t$};
\draw (3,-1) rectangle (16,7);
\node (E') at (3.5,6.5) {$E'$};
\foreach \x/\i in {5/0,7/1,9/2,13/{n-1}} {
\draw (\x-1,5.5) rectangle (\x+1,4.5);
\node (m\i) at (\x,5) {$m_{\i}$};
\draw (\x,1.5) rectangle (\x+2,0.5);
\node (c\i) at (\x+1,1) {$c_{\i}$};
\node [algo] (E\i) at (\x,3) {$E$};
\draw [->] (\x,4.5) -- (E\i);
\draw [->] (\x-1.5,3) -- (E\i);
\draw [->, rounded corners] (E\i) -| node [above] {$c_{\i}$} (\x+1,1.5);
}
\draw (E2) -- (10.5,3);
\draw (k) -- (3.5,3);
\node at (11,5) {$\cdots$};
\draw [dotted] (10.5,3) -- (11.5,3);
\node at (12,1) {$\cdots$};
\draw [decorate,decoration={brace,amplitude=0.5cm}] (4,5.5) -- (14,5.5);
\draw [decorate,decoration={brace,amplitude=0.5cm}] (15,0.5) -- (5,0.5);
\draw [->] (m) -- (9,6);
\draw [->] (10,0) -- (t);
\end{tikzpicture}
\end{document}
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
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- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
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