conclusion: explicitly refer to research questions
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In this thesis, we propose Inertial Hardware Security Modules (IHSMs), a new approach to physical security that combines
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conventional tamper-sensing meshes with physical movement to bootstrap a highly secure system from low-security,
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off-the-shelf parts. To motivate our research, we show on the German national digital health record system how hardware
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security is hard to achieve in practice. Besides some minor cryptographic oddities, our analysis reveals at least one
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essential specification mistake that negates the hardware security of the system by unnecessarily introducing a poorly
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protected HSM. We provide a deep analyses of two key engineering challenges in IHSM construction, mesh monitoring and
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power transfer. We propose a low-cost TDR-based mesh monitoring system that exceeds the capabilities of previous systems
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from academic or from patent literature. Our system is capable of monitoring large meshes while simultaneously providing
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detailed results. Our TDR-based mesh monitoring system is of independent interest, since it can also be integrated into
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traditional HSM designs. We additionally propose a new, generalized design for high-frequency PCB inductors with low
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parasitic capacitance. Our design provides better bandwidth and lower parasitic capacitance compared to the state of the
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art without increasing implementation cost. We conclude this thesis with two chapters elaborating on two new use cases
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that are made possible by IHSM technology due to its ability to protect large payloads that have high power consumption.
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off-the-shelf parts, solving our first research question introduced in Chapter~\ref{chapter-intro}. To motivate our
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research, we show on the German national digital health record system how hardware security is hard to achieve in
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practice. Besides some minor cryptographic oddities, our analysis reveals at least one essential specification mistake
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that negates the hardware security of the system by unnecessarily introducing a poorly protected HSM. We provide a deep
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analyses of two key engineering challenges in IHSM construction, mesh monitoring and power transfer. Solving our second
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research question, we propose a low-cost TDR-based mesh monitoring system that exceeds the capabilities of previous
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systems from academic or from patent literature. Our system is capable of monitoring large meshes while simultaneously
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providing detailed results. Our TDR-based mesh monitoring system is of independent interest, since it can also be
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integrated into traditional HSM designs. We additionally propose a new, generalized design for high-frequency PCB
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inductors with low parasitic capacitance. Our design provides better bandwidth and lower parasitic capacitance compared
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to the state of the art without increasing implementation cost. We conclude this thesis with two chapters elaborating on
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two new use cases that are made possible by IHSM technology due to its ability to protect large payloads that have high
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power consumption. Together, these results answer our third and final research question.
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\section{Outlook}
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}
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\chaptertitle{Introduction}
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\label{chapter-intro}
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All Cops Are Bastards, or ACAB is a slogan popular in far left and anarchist circles since the mid-twentieth century
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that expresses a rejection of state authority~\cite{constantinouAppliedResearchPolicing2021}. While politically, this
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