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Quantifying the Effects of More Timely Certificate Revocation on Lightweight Mobile Devices

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2 Author(s)
Sufatrio ; Temasek Labs., Nat. Univ. of Singapore, Singapore, Singapore ; Roland H. C. Yap

Public Key Infrastructure (PKI) is a key infrastructure for secure communications and transactions on the Internet. We revisit the problem of timely certificate revocation and develop a performance analysis framework with more realistic assumptions of when certificates are revoked, a query model differentiating revoked and unrevoked certificates, and realistic cost factors. Our analysis is fine-grained and shows the impact of a revocation scheme on the computation, storage and bandwidth costs particularly on mobile devices as the verifiers. We apply our performance framework to analyze the following schemes: CRL, OCSP, CRS and CREV. Our analysis shows clearly the strengths and weaknesses of each scheme particularly for mobile lightweight verifiers under higher timeliness guarantees.

Published in:

2011 Third International Workshop on Security Measurements and Metrics

Date of Conference:

21-21 Sept. 2011