Personal Privacy Protection Framework Based on Hidden Technology for Smartphones

Hong, Shuangxi; Liu, Chuanchang; Ren, Bingfei; Huang, Yuze; Chen, Junliang

doi:10.1109/access.2017.2695561

Cited by 9 publications

(8 citation statements)

References 13 publications

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“…• Data loss. Hidden volumes are concealed inside the outer volume [7][8][9][10][11], but the outer volume does not know the existence of hidden volumes. Therefore, it is likely to write data on the storage blocks that are occupied by hidden volumes.…”

Section: Outer Volume's Viewmentioning

confidence: 99%

“…• Device reboot. State-of-the-art works use two modes in their system, namely, the nor-70 mal mode and the PDE mode [7][8][9][10][11]. The normal mode uses the outer volume while the PDE mode uses the hidden volume, respectively.…”

Section: Outer Volume's Viewmentioning

confidence: 99%

“…MobiMimosa [11] is our former work of the hidden volume based PDE solution for the Android. Its key idea is manually choosing storage blocks on a physical device and converting the blocks into a hidden volume.…”

Section: (B) High Storage Utilization Solutionsmentioning

confidence: 99%

“…MobiMimosa [11] achieves storage utilization improvement by using the dm table to record the storage block used by the hidden volume for the outer volume. Therefore, the only waste is the dm table.…”

Section: Storage Utilization Evaluation 970mentioning

confidence: 99%

“…We post our IO performance overhead comparison experimental re-1100 sults here for the further optimization target. We implement disk management part of Mobiflage [7], MobiHydra [8], MobiMimosa [11], Mo-biCeal [12] on Linux desktop PC and evaluate their performance with dd. The experimental results are 1105 shown in Figure 15, and the baseline system is the Android FDE 12 .…”

Section: Performance Overhead Comparisonmentioning

confidence: 99%

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MobiGyges: A mobile hidden volume for preventing data loss, improving storage utilization, and avoiding device reboot

Feng

Liu

Guo

et al. 2020

Future Generation Computer Systems

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Sensitive data protection is essential for mobile users. Plausibly Deniable Encryption (PDE) systems provide an effective manner to protect sensitive data by hiding them on the device. However, existing PDE systems can lose data due to overriding the hidden volume, waste physical storage because of the "reserved area" used for avoiding data loss, and require device reboot when using the hidden volume. This paper presents MobiGyges, a hidden volume based mobile PDE system, to fill the gap. MobiGyges addresses the problem of data loss by restricting each storage block used only by one volume, and it improves storage utilization by eliminating the "reserved area". MobiGyges can also avoid device reboot by mounting the hidden volume dynamically on-demand with the Dynamic Mounting service. Moreover, we identify two novel PDE oriented attacks, the capacity comparison attack and the fill-to-full attack. MobiGyges can defend them by jointly leveraging the Shrunk U-disk method and multi-level deniability. We implement the MobiGyges proof-of-concept system on a real mobile phone Google Nexus 6P with LineageOS 13. Experimental results show that MobiGyges prevents data loss, avoids device reboot, improves storage utilization by over 30% with acceptable performance overhead compared with current works.

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Section: Outer Volume's Viewmentioning

confidence: 99%

Section: Outer Volume's Viewmentioning

confidence: 99%

Section: (B) High Storage Utilization Solutionsmentioning

confidence: 99%

Section: Storage Utilization Evaluation 970mentioning

confidence: 99%

Section: Performance Overhead Comparisonmentioning

confidence: 99%

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