Publication Type

Conference Proceeding Article

Version

acceptedVersion

Publication Date

6-2018

Abstract

We introduce MobiCeal, the first practical Plausibly Deniable Encryption (PDE) system for mobile devices that can defend against strong coercive multi-snapshot adversaries, who may examine the storage medium of a user's mobile device at different points of time and force the user to decrypt data. MobiCeal relies on 'dummy write' to obfuscate the differences between multiple snapshots of storage medium due to existence of hidden data. By incorporating PDE in block layer, MobiCeal supports a broad deployment of any block-based file systems on mobile devices. More importantly, MobiCeal is secure against side channel attacks which pose a serious threat to existing PDE schemes. A proof of concept implementation of MobiCeal is provided on an LG Nexus 4 Android phone using Android 4.2.2. It is shown that the performance of MobiCeal is significantly better than prior PDE systems against multi-snapshot adversaries.

Keywords

Fast Switching, Mobile Security, Multi snapshot Adversary, Plausibly Deniable Encryption, Side Channel Attack

Discipline

Information Security

Research Areas

Cybersecurity

Publication

48th Annual IEEE/IFIP International Conference on Dependable Systems and Networks DSN 2018: Luxembourg City, 25-28 June: Proceedings

First Page

454

Last Page

465

ISBN

9781538655955

Identifier

10.1109/DSN.2018.00054

Publisher

IEEE Computer Society

City or Country

Los Alamitos, CA

Copyright Owner and License

Authors

Additional URL

https://doi.org/10.1109/DSN.2018.00054

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