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29 lines
899 B
TeX
29 lines
899 B
TeX
\documentclass{article}
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\usepackage[pdftex,active,tightpage]{preview}
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\usepackage{tikz}
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\usetikzlibrary{calc}
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\begin{document}
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\begin{preview}
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\tikzstyle{vertex}=[draw,fill=black!15,circle,minimum size=20pt,inner sep=0pt]
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\tikzstyle{encrypt}=[draw,fill=black!15,rectangle,minimum size=20pt,inner sep=0pt]
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\begin{tikzpicture}
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\newcommand{\n}{3}
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\foreach \nr in {1, ..., \n}{
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\node (M\nr) at (0,{(\n-\nr)*2}) {$M_\nr$};
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\node (C\nr) at (4,{(\n-\nr)*2}) {$C_\nr$};
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\node (E\nr)[encrypt] at (2,{(\n-\nr)*2}) {$E$};
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\node (K\nr) at (2,{(\n-\nr)*2+1}) {$K$};
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\draw[->,very thick] (M\nr) -- (E\nr);
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\draw[->,very thick] (K\nr) -- (E\nr);
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\draw[->,very thick] (E\nr) -- (C\nr);
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}
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\node (Mx) at (0,-1) {$\vdots$};
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\node (Ex) at (2,-1) {$\vdots$};
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\node (Cx) at (4,-1) {$\vdots$};
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\end{tikzpicture}
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\end{preview}
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\end{document}
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