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\usepackage[naustrian]{babel} |
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%properties for listings: |
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language=[LaTeX]TeX, %language |
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basicstyle=\footnotesize\ttfamily, %common font style |
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%Beamer preferences |
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\AtBeginSection[] |
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currentsection, |
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\documentclass[naustrian,notes]{beamer} |
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\input{header} |
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%Titelinformationen |
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\title[Digidow Biometric Sensor]{Digital Shadow: Biometric Sensor} |
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\subtitle{Master's Thesis Seminar} |
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\author[Michael Preisach]{Michael Preisach} |
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\date{November 19, 2019} |
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\institute[INS]{\includegraphics[width=0.1\textwidth]{../../resources/ins}} |
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\begin{document} |
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\begin{frame} |
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\titlepage |
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\end{frame} |
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\begin{frame} |
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\frametitle{Project Overview Digital Shadow} |
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\begin{figure} |
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\centering |
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\includegraphics[width=0.9\textwidth]{../../resources/globalview} |
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\end{figure} |
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\end{frame} |
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\begin{frame} |
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\frametitle{Recap: Trust inside Biometric Sensor} |
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\begin{itemize} |
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\item manufacturer of TPM holds certificate |
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\item TPM holds measurements of boot chain in PCR |
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\begin{itemize} |
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\item CRTM measures BIOS |
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\item BIOS measures MBR/EFI Bootloader |
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\item bootloader measures Kernel (Grub 2.04 supports TPM2) |
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\item Kernel measures libs, executables, \ldots |
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\end{itemize} |
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\item TPM Quote: summarize the PCR state and sign it with TPM Endorsement Key (EK) |
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\end{itemize} |
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\end{frame} |
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\begin{frame} |
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\frametitle{Problem: Create trust beween BS and PA} |
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\begin{itemize} |
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\item network discovery |
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\item \textbf{no Knowledge about BS} |
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\begin{itemize} |
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\item \textbf{Hardware} |
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\item \textbf{Software} |
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\item \textbf{Am I talking to a valid BS} |
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\item Correct client to certify identity for given biometric data |
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\end{itemize} |
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\item \textbf{BS faces same problem with PA} |
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\item establish a secure channel to submit sensitive data |
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\end{itemize} |
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\end{frame} |
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\begin{frame} |
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\frametitle{Solution: Direct Anonymous Attestation (DAA)} |
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\begin{itemize} |
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\item based on group signatures |
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\item Zero Knowledge Proof to verify group membership |
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\item defines 3 Parties |
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\begin{itemize} |
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\item Issuer: provides public key for a group (e.g. all Biometric Sensors) and manages group memberships |
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\item Member: holds a group private key to sign messages (e.g. a Biometric Sensor) |
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\item Verifier: knows the group public key and is able to verify correctness of signature (e.g. Personal Agent) |
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\end{itemize} |
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\item used DAA is based on Elliptic Curves (ECDAA) |
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\end{itemize} |
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\end{frame} |
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\end{document} |
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