ReFlat: A Robust Access Pattern Hiding Solution for General Cloud Query Processing Based on K-Isomorphism and Hardware Enclave

Han, Ziyang; Hu, Haibo; Ye, Qingqing

doi:10.1109/tcc.2021.3137351

IEEE Trans. Cloud Comput.

2023

DOI: 10.1109/tcc.2021.3137351

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ReFlat: A Robust Access Pattern Hiding Solution for General Cloud Query Processing Based on K-Isomorphism and Hardware Enclave

Ziyang Han

Haibo Hu

Qingqing Ye

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OTKI-F: An efficient memory-secure multi-keyword fuzzy search protocol

Han

2023

JCS

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Many breakthroughs on security and privacy-preserving techniques have emerged to mitigate the trust loss of cloud hosting environment caused by various types of attacks. To enhance memory-level security of multi-keyword fuzzy search, a widely occurred query request, we take the initiative to apply Trusted Execution Environment (a.k.a TEE) technology to our protocol design which provides hardware-based tamper-proof enclaves. Then we propose the Edit Distance-based Obfuscation Mechanism to further protect the query process executed outside TEE against access pattern leakage. With concerns of practicality and performance, we also propose the two-layer fuzzy index structure and Trend-aware Cache. The former addresses the space limitation of TEE memory for searching large datasets, while the latter optimizes the cache utility of TEE with trend-aware coordinator to effectively reduce the communication overhead.

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OTKI-F: An efficient memory-secure multi-keyword fuzzy search protocol

Han

2023

JCS

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ReFlat: A Robust Access Pattern Hiding Solution for General Cloud Query Processing Based on K-Isomorphism and Hardware Enclave

Cited by 1 publication

References 45 publications

OTKI-F: An efficient memory-secure multi-keyword fuzzy search protocol

OTKI-F: An efficient memory-secure multi-keyword fuzzy search protocol

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