Day: January 20, 2023

Doctoral Finishing Fellowship – Spring 2023 Recipient – Niusen Chen

I started my PhD life in the Department of Computer at Michigan Technological University with Dr. Bo Chen. My research interests mainly focus on securely deleting data in flash devices and implementing Plausibly Deniable Encryption (PDE) to fare against coercive attacks in flash devices.

Due to the nature of flash memory, some special functions such as garbage collection and wear leveling are performed in flash devices. These functions will generate several duplicates of the content. A regular delete operation from the user level can not remove those duplicates, therefore, privacy may be compromised. In this work, I experimentally verify the existence of those duplicates and propose a method to remove them. Implementing PDE in flash devices is also a topic I am focusing on. Existing PDE work is implemented either in the block device layer or Flash Translation Layer (FTL). I build a PDE framework such that the block device layer and FTL layer can work cooperatively with each other. This is because the block device layer is more user-friendly and the FTL layer can handle the special nature of flash devices. In this way, PDE will work more efficiently.

I would like to express my sincere gratitude to the Department of Computer Science and the Graduate College of Michigan Technological University for their continuous support in achieving my PhD goals. I am also grateful to my advisor Dr. Bo Chen and my committee members, for their guidance and help during my PhD life.