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Efficient Mitigation of Leakage-abuse Attacks for Searchable Encryption

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thesis
posted on 22.12.2021, 00:50 by VIET QUANG VO
Dynamic searchable symmetric encryption (DSSE) is one of the key enablers for building encrypted databases. Current studies are not ready for practical uses due to security and performance issues. Therefore, we first propose ShieldDB that enables streaming/search over encrypted database. We analyse to what extend adversaries can exploit the leakage of DSSE schemes, and propose lightweight but effective padding countermeasures. Then, we focus on how to improve the performance of advanced schemes supporting security notions of forward and backward privacy. We provide three trusted execution environment-supported backward (and forward)-private schemes. Our schemes outperform previous studies at the same leakage types.

History

Campus location

Australia

Principal supervisor

Xingliang Yuan

Additional supervisor 1

Shi-Feng Sun

Additional supervisor 2

Joseph Liu

Year of Award

2021

Department, School or Centre

Software Systems & Cybersecurity

Course

Doctor of Philosophy

Degree Type

DOCTORATE

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