diff --git a/index.html b/index.html index 78de895..073458b 100644 --- a/index.html +++ b/index.html @@ -21,10 +21,19 @@
Attestation (noun) - the activity of making a claim to an appraiser about the properties of a target by supplying evidence which supports that claim. [1] + +
Smart Contracts (noun) - scripts stored on the blockchain. The contracts have their own state, and are triggered by messages/transactions sent to their respective addresses. [2] + +
Challenges adapting RA to IoT:

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  • IoT devices may go offline to save power
  • IoT networks use untrusted brokers
  • + +
    SCRAPS

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  • ProxyVerifier appraises evidence using config & freshness
  • Verifier requests appraisal from ProxyVerifier
  • + +
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    1. ProxyVerifier appraises evidence using config & freshness
    2. Verifier requests appraisal from ProxyVerifier
    + +
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    1. ProxyVerifier appraises evidence using config & freshness
    2. Verifier requests appraisal from ProxyVerifier
    + +
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    1. ProxyVerifier appraises evidence using config & freshness
    2. Verifier requests appraisal from ProxyVerifier
    + +
    Figure 6 + +
    Figure 8 + +

    Smart Contracts

    + +
    Stength: Problem/architecture formulation + +
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    Strength: Appraiser is as secure as the chain + +
    Strength: Use of blockchain eliminates some attacks + +
    Weakness: Interaction between freshness and sleep + +
    Weakness: Limited appraisal & trust flexibility + +
    Weakness: Determination of  $T_{min}$ and  $T_{exp}$ + +
    Weakness: Depends on manufacturer's pub-key to verify + +
    Weakness: Evidence & appraisal privacy + +
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    Future work: SC-based flexible mechanisms + +
    Future work: SC-based flexible mechanisms (reprise) + +
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    [3] Helble, Sarah C., Ian D. Kretz, Peter A. Loscocco, John D. Ramsdell, Paul D. Rowe, and Perry Alexander. “Flexible Mechanisms for Remote Attestation.” ACM Transactions on Privacy and Security 24, no. 4 (September 30, 2021): 29:1-29:23. https://doi.org/10.1145/3470535.

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