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chapter-hsms/pres-harris.tex
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@ -28,7 +28,7 @@
\newcommand{\sampleno}[1]{#1}
\title{Tamper-Sensing Meshes in the Wild}
\author{Jan Sebastian Götte \& Björn Scheuermann\\TU Darmstadt\\contact: \texttt{research@jaseg.de}}
\author{\textbf{Jan Sebastian Götte} \& Björn Scheuermann\\TU Darmstadt\\contact: \texttt{research@jaseg.de}}
\date{2026-03-24}
\begin{document}
@ -62,7 +62,7 @@
\item \textbf{1990s}: Widespread commercial adoption with cryptographic applications
\end{itemize}
Other, hard to date examples: NSA use for protecting ciphering machines~\cite{boakHistoryUSCommunications1973}, US use in nuclear weapons~\cite{carterManagingNuclearOperations1987}
Other, hard to date examples: NSA use for protecting ciphering machines~\cite{boakHistoryUSCommunications1973,boakHistoryUSCommunications1981}, US use in nuclear weapons~\cite{carterManagingNuclearOperations1987}
\end{frame}
\begin{frame}{Commercial Applications Today}
@ -321,18 +321,19 @@ Other, hard to date examples: NSA use for protecting ciphering machines~\cite{bo
\begin{frame}{Thermoforming Example}
\begin{columns}[T]
\begin{column}{0.32\textwidth}
\begin{column}{0.48\textwidth}
\centering
\includegraphics[width=.6\textwidth]{survey_formed_mesh_before.jpg}\\
\small Before removing lacquer
\end{column}
\begin{column}{0.32\textwidth}
\begin{column}{0.48\textwidth}
\centering
\includegraphics[width=.6\textwidth]{survey_formed_mesh_after.jpg}\\
\small After removing lacquer
\end{column}
\end{columns}
\vspace{3mm}
\centering
\small Formed cavities in printed foil mesh specimen H24
\end{frame}
@ -372,15 +373,11 @@ Other, hard to date examples: NSA use for protecting ciphering machines~\cite{bo
\end{frame}
\begin{frame}{Security Issues Observed}
\textbf{Design Defects:}
\begin{itemize}
\item Incomplete mesh coverage
\item Meshes not overlapping at edges leaving gaps for probe insertion
\item Gaps at mesh-PCB interfaces
\item Thermoformed cavities with enlarged structure size at corners
\end{itemize}
\textbf{Obscurity Failures:}
\begin{itemize}
\item In one case, an opaque lacquer was easily removed with acetone (without damaging the mesh!)
\item Trace patterns visible through cover layers due to surface unevenness
\end{itemize}
@ -429,7 +426,7 @@ Other, hard to date examples: NSA use for protecting ciphering machines~\cite{bo
\begin{frame}
\centering
Long-form version of this presentation in my thesis:
Long-form version of this presentation in my thesis (pre-release, to be published this summer):
\url{https://jaseg.de/thesis-final-web.pdf}