SoK: Plausibly Deniable Storage
Chen Chen, Xiao Liang, Bogdan Carbunar, Radu Sion

TL;DR
This paper systematically reviews plausible deniability in storage systems, proposing a unified framework and a new trace-oriented paradigm to improve security, flexibility, and understanding of PD mechanisms amidst evolving adversarial models.
Contribution
It introduces a comprehensive framework for evaluating PD security and performance, and proposes a novel trace-oriented PD paradigm that enhances flexibility and security.
Findings
Unified framework for PD evaluation
Identification of key PD properties and requirements
Introduction of trace-oriented PD paradigm
Abstract
Data privacy is critical in instilling trust and empowering the societal pacts of modern technology-driven democracies. Unfortunately, it is under continuous attack by overreaching or outright oppressive governments, including some of the world's oldest democracies. Increasingly-intrusive anti-encryption laws severely limit the ability of standard encryption to protect privacy. New defense mechanisms are needed. Plausible deniability (PD) is a powerful property, enabling users to hide the existence of sensitive information in a system under direct inspection by adversaries. Popular encrypted storage systems such as TrueCrypt and other research efforts have attempted to also provide plausible deniability. Unfortunately, these efforts have often operated under less well-defined assumptions and adversarial models. Careful analyses often uncover not only high overheads but also outright…
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Taxonomy
TopicsAdvanced Data Storage Technologies · Cloud Data Security Solutions · Cryptography and Data Security
