diff --git a/chapter-introduction/chapter.tex b/chapter-introduction/chapter.tex index e0adc22..c937884 100644 --- a/chapter-introduction/chapter.tex +++ b/chapter-introduction/chapter.tex @@ -252,31 +252,27 @@ choices resulting from conflicting constraints and lack of awareness. In Chapter results of a survey across approximately 30 real world tamper sensing mesh implementations, analyzing common design features. -The latter half of our survey in Chapter~\ref{chapter-survey} answers our second research question. From our analysis of -this large corpus of devices, we deduce a list of design criteria that can be applied to increase the security of any -tamper sensing mesh implementation. - -To answer our third research question, in Chapter~\ref{chapter-ihsm} we propose the Inertial Hardware Security Module -(IHSM), a new type of HSM that extends the high level of protection offered by the modern cryptographic software stack -down to the hardware level, enabling secure computation in insecure places. IHSMs can be built from basic, off-the-shelf -components and do not require bespoke manufacturing processes. - -To answer our fourth research question, in Chapter~\ref{chapter_sampling_mesh_mon} we propose improvements to the state -of the art in HSM tamper sensors based on the use of low-cost, embeddable Time-Domain Reflectometry (TDR). Our -improvements can be applied to both IHSMs and conventional HSMs. - -IHSMs come with unique power supply constraints since their rotating mesh must be continuously powered. A -straightforward solution utilizes Wireless Power Transfer using planar inductors, but existing WPT designs exhbit a -ripple voltage due to an asymmetry of conventional planar inductors. This leads to our fifth research question, which -we solve in Chapter~\ref{chapter-nice-coils} with the design and experimental evaluation of a new, generalized class of -\emph{twisted} planar inductors that reduces voltage ripple in rotating shaft setups. - -Finally, we answer our last research question by showing in two case studies how an end-to-end design of an IHSM-secured -data processing system could look like. Both case studies concern scenarios that IHSMs unlock that were previously -infeasible using conventional HSMs: In Chapter~\ref{chapter-qkd}, we explore how IHSMs enable long-range Quantum Key -Distribution (QKD) networks using trustable physically secured relay nodes and in Chapter~\ref{chapter-smpc} we -elaborate how datacenter-scale Secure Multiparty Computation (SMPC) clusters can be created using IHSM enclosures with -commercial server hardware. +The second half of our survey in Chapter~\ref{chapter-survey} answers our second research question. From our analysis of +a large corpus of devices, we deduce a list of design criteria that can be applied to increase the security of any +tamper sensing mesh implementation. To answer our third research question, in Chapter~\ref{chapter-ihsm} we propose the +Inertial Hardware Security Module (IHSM), a new type of HSM that extends the high level of protection offered by the +modern cryptographic software stack down to the hardware level, enabling secure computation in insecure places. IHSMs +can be built from basic, off-the-shelf components and do not require bespoke manufacturing processes. To answer our +fourth research question, in Chapter~\ref{chapter_sampling_mesh_mon} we propose improvements to the state of the art in +HSM tamper sensors based on the use of low-cost, embeddable Time-Domain Reflectometry (TDR). Our improvements can be +applied to both IHSMs and to conventional HSMs. IHSMs come with unique power supply constraints since their rotating +mesh must be continuously powered. A straightforward solution utilizes Wireless Power Transfer using planar inductors, +but existing WPT designs exhbit a ripple voltage due to an asymmetry of conventional planar inductors. This leads to our +fifth research question, which we solve in Chapter~\ref{chapter-nice-coils} with the design and experimental evaluation +of a new, generalized class of \emph{twisted} planar inductors that reduces voltage ripple in rotating shaft setups. +A finding of independent interest is that compared to conventional two-layer planar inductors, in our experiments our +proposed inductor design improved self-resonant frequency by up to \qty{50}{\percent} and increased inductance by up to +\qty{6.5}{\percent}. Finally, we answer our last research question by showing in two case studies how an end-to-end +design of an IHSM-secured data processing system could look like. Both case studies concern scenarios that IHSMs unlock +that were previously infeasible using conventional HSMs: In Chapter~\ref{chapter-qkd}, we explore how IHSMs enable +long-range Quantum Key Distribution (QKD) networks using trustable physically secured relay nodes and in +Chapter~\ref{chapter-smpc} we elaborate how datacenter-scale Secure Multiparty Computation (SMPC) clusters can be +created using IHSM enclosures with commercial server hardware. \section{Contributions}