appliedcryptography/slides/theme/beamerinnerthemecipher.sty

\ProvidesPackage{theme/beamerinnerthemecipher}[2025/05/04 v1.0 Cipher Beamer Theme]

% Cover slide (title page with logo and image)
\defbeamertemplate*{title page}{cipher}{
	% Background
	\begin{tikzpicture}[remember picture, overlay]
		\fill[cipherdarkbg] (current page.north west) rectangle (current page.south east);
		\draw[cipheraccent, line width=3pt]
		(current page.north west) rectangle (current page.south east);
	\end{tikzpicture}

	% University logo
	\begin{tikzpicture}[remember picture, overlay]
		\node[anchor=north west, inner sep=0pt] at ([shift={(0.95cm,-0.6cm)}]current page.north west) {
			\includegraphics[height=1.6cm]{\insertinstituteimage}
		};
	\end{tikzpicture}

	% Grid layout for cover slide
	\vspace{1cm}
	\begin{columns}[c,onlytextwidth]
		% Left column - image
		\begin{column}{0.45\textwidth}
			\begin{beamercolorbox}[center]{cover text}
				\begin{tikzpicture}
					\node[inner sep=0pt] {
						\includegraphics[width=\textwidth, height=1\textwidth, keepaspectratio]{images/cedar.jpg}
					};
					\draw[white, line width=1mm]
					(current bounding box.south west) rectangle (current bounding box.north east);
				\end{tikzpicture}
			\end{beamercolorbox}
		\end{column}

		% Right column - text
		\begin{column}{0.6\textwidth}
			\begin{beamercolorbox}[wd=\textwidth, leftskip=1.3cm]{title}
				\usebeamerfont{title}\usebeamercolor[fg]{title}\inserttitle\par
				\vskip0cm
				\usebeamercolor[fg]{subtitle}\usebeamerfont{subtitle}\insertcoversubtitle\par
				\vskip0.3cm
				\usebeamercolor[fg]{part name}\usebeamerfont{part name}\insertcoverpartname\par
				\vskip0cm
				\usebeamercolor[fg]{topic name}\usebeamerfont{topic name}\insertcovertopicname\par
				\vskip0.3cm
				\usebeamercolor[fg]{author}\usebeamerfont{author}\insertauthor\par
				\vskip0cm
				\usebeamercolor[fg]{cover website}\usebeamerfont{cover website}\url{\insertcoverwebsite}\par
			\end{beamercolorbox}
		\end{column}
	\end{columns}
}

\setbeamertemplate{itemize items}[circle]
\setbeamertemplate{enumerate items}[default]
\setbeamertemplate{section in toc}[circle]
\beamertemplatenavigationsymbolsempty

\AtBeginSection[]{
	\begin{frame}[plain]
		\begin{tikzpicture}[remember picture, overlay]
			\fill[cipherdarkbg] (current page.north west) rectangle (current page.south east);
			\draw[cipheraccent, line width=2pt] (current page.north west) rectangle (current page.south east);
		\end{tikzpicture}

		\vspace{2cm}
		\begin{center}
			\begin{minipage}{0.9\textwidth}
				\raggedright
				{\usebeamercolor[fg]{subtitle}\usebeamerfont{subtitle}\Large Section \thesection}

				\vspace{0.5cm}
				{\usebeamercolor[fg]{title}\usebeamerfont{title}\fontsize{20}{24}\selectfont\insertsectionhead\par}
			\end{minipage}

			\vspace{1cm}
			\begin{tikzpicture}
				\draw[cipheraccent, line width=3pt] (0,0) -- (8,0);
			\end{tikzpicture}
		\end{center}
	\end{frame}
}

\AtBeginSubsection[]{
	\begin{frame}[plain]
		\begin{tikzpicture}[remember picture, overlay]
			\fill[cipherdarkbg!90] (current page.north west) rectangle (current page.south east);
			\draw[cipheraccent, line width=1.5pt] (current page.north west) rectangle (current page.south east);
		\end{tikzpicture}

		\vspace{2cm}
		\begin{center}
			\begin{minipage}{0.9\textwidth}
				\raggedright
				{\usebeamercolor[fg]{subtitle}\usebeamerfont{subtitle}Section \thesection: \insertsectionhead}\\[2.5em]
				{\usebeamercolor[fg]{subtitle}\usebeamerfont{subtitle}\Large Subsection \thesection.\thesubsection}\\[0.2em]
				{\usebeamercolor[fg]{title}\usebeamerfont{title}\fontsize{18}{22}\selectfont\insertsubsectionhead\par}
			\end{minipage}

			\vspace{1cm}
			\begin{tikzpicture}
				\draw[cipheraccent, line width=2.5pt] (0,0) -- (6,0);
			\end{tikzpicture}
		\end{center}
	\end{frame}
}

% Custom commands
\newcommand{\coversubtitle}[1]{\def\insertcoversubtitle{#1}}
\newcommand{\covertopicname}[1]{\def\insertcovertopicname{#1}}
\newcommand{\coverpartname}[1]{\def\insertcoverpartname{#1}}
\newcommand{\coverwebsite}[1]{\def\insertcoverwebsite{#1}}
\newcommand{\instituteimage}[1]{\def\insertinstituteimage{#1}}

\newcommand{\definitionbox}[2]{%
	\begin{tcolorbox}[
			enhanced,
			colback=cipherprimary!5!cipherlight,
			colframe=cipherprimary,
			colbacktitle=cipherprimary!40!white,
			title=#1,
			fonttitle=\bfseries\sffamily,
			boxrule=0.4mm,
			arc=2mm,
			left=3mm,right=3mm,top=3mm,bottom=3mm,
			drop shadow={opacity=0.1},
			sharp corners=southeast,
			fontupper=\fontsize{9.5pt}{11pt}\selectfont
		]
		#2
	\end{tcolorbox}
}

\newcommand{\alertbox}[2]{%
	\begin{tcolorbox}[
			enhanced,
			colback=red!5!cipherlight,
			colframe=red!70!black,
			colbacktitle=red!30!white,
			title=#1,
			fonttitle=\bfseries\sffamily,
			boxrule=0.4mm,
			arc=2mm,
			left=3mm,right=3mm,top=3mm,bottom=3mm,
			drop shadow={opacity=0.1},
			sharp corners=southeast,
			fontupper=\fontsize{9.5pt}{11pt}\selectfont
		]
		#2
	\end{tcolorbox}
}

% Nicely formatted image with caption
\newcommand{\imagewithcaption}[3][0.9\textwidth]{
	\begin{center}
		\begin{tikzpicture}
			\hspace{-1mm}
			\node[fill=white, anchor=center, inner sep=1mm]{
				\includegraphics[width=#1, height=0.6\textheight, keepaspectratio]{images/#2}
			};
			\node[fit=(current bounding box), inner sep=0.5mm, draw=white, line width=0.5mm] {};
		\end{tikzpicture}
		\vspace{0.5em}
		\begin{minipage}{0.7\textwidth}
			\centering
			\usebeamerfont{caption}#3
		\end{minipage}
	\end{center}
}

% Nicely formatted image with caption (big)
\newcommand{\bigimagewithcaption}[3][1\textwidth]{
	\begin{center}
		\vspace{-0.5cm}
		\begin{tikzpicture}
			\hspace{-1mm}
			\node[fill=white, anchor=center, inner sep=1mm]{
				\includegraphics[width=#1, height=0.75\textheight, keepaspectratio]{images/#2}
			};
			\node[fit=(current bounding box), inner sep=0.5mm, draw=white, line width=0.5mm] {};
		\end{tikzpicture}
		\vspace{0.3em}
		\begin{minipage}{0.8\textwidth}
			\centering
			\usebeamerfont{caption}#3
		\end{minipage}
	\end{center}
}

\newcommand\fstar{\textsf{F}\ensuremath{^\star}\xspace}
\newcommand\haclstar{\textsf{HACL}\ensuremath{^\star}\xspace}