MobiCeal: Towards secure and practical plausibily deniable encryption on mobile devices

Document Type

Conference Proceeding

Publication Date



Department of Computer Science; Center for Cybersecurity


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

Publisher's Statement

© 2018 IEEE. Publisher's version of record:

Publication Title

2018 48th Annual IEEE/IFIP International Conference on Dependable Systems and Networks (DSN)