@inproceedings{f769e01cfb9540fe90dc9808ba5bc21c,
title = "BlockOPE: Efficient Order-Preserving Encryption for Permissioned Blockchain",
abstract = "Permissioned blockchain is increasingly being used as a collaborative platform for sharing data. However, current blockchain-based data sharing is unable to balance privacy pro-tection and query functionality, limiting its application scenarios. Order-preserving encryption/encoding (OPE) allows encrypting data to prevent privacy leakage while still supporting efficient order-oriented queries on ciphertexts. But existing OPE schemes are constrained by limited use cases and inherent performance limitations that make them difficult to be adopted by permissioned blockchain where performance is a major concern. In this paper, we present BlockOPE, an efficient OPE scheme designed around the first study integrating OPE into blockchain systems. By supporting parallel processing with a conflict-reducing design, we argue that BlockOPE is feasible for permissioned blockchain, achieving orders-of-magnitude performance improvement while preserving the ideal OPE security. Additionally, we improve query processing by leveraging an adaptive lightweight client cache. Extensive experiment results and theoretical analysis illustrate the practicability of our approach.",
keywords = "Blockchain, Order-Preserving Encryption, Privacy",
author = "Zhihao Chen and Qingqing Li and Xiaodong Qi and Zhao Zhang and Cheqing Jin and Aoying Zhou",
note = "Publisher Copyright: {\textcopyright} 2022 IEEE.; 38th IEEE International Conference on Data Engineering, ICDE 2022 ; Conference date: 09-05-2022 Through 12-05-2022",
year = "2022",
doi = "10.1109/ICDE53745.2022.00098",
language = "英语",
series = "Proceedings - International Conference on Data Engineering",
publisher = "IEEE Computer Society",
pages = "1245--1258",
booktitle = "Proceedings - 2022 IEEE 38th International Conference on Data Engineering, ICDE 2022",
address = "美国",
}