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arXiv · 2411.07702

A Call to Reconsider Certification Authority Authorization (CAA)

Pouyan Fotouhi Tehrani·Raphael Hiesgen·Thomas C. Schmidt·Matthias Wählisch
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Abstract

Certification Authority Authentication (CAA) is a safeguard against illegitimate certificate issuance. We show how shortcomings in CAA concepts and operational aspects undermine its effectiveness in preventing certificate misissuance. Our discussion reveals pitfalls and highlights best practices when designing security protocols based on DNS.

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Pouyan Fotouhi Tehrani, Raphael Hiesgen, Thomas C. Schmidt, Matthias Wählisch. 2024-11-12. A Call to Reconsider Certification Authority Authorization (CAA). https://doi.org/10.1109/msec.2025.3531232

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