Improved Structured Encryption for SQL Databases via Hybrid Indexing
Improved Structured Encryption for SQL Databases via Hybrid Indexing
复制标题
通过混合索引改进 SQL 数据库的结构化加密
DOI:
10.1007/978-3-030-78375-4_19
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Rivkin, Adam
中科院分区:
文献类型:
--
作者:
Cash, David;Ng, Ruth;Rivkin, Adam
We introduce a new technique for indexing joins in encrypted SQL databases calledpartially precomputed joinswhich achieves lower leakage and bandwidth than those used in prior constructions. These techniques are incorporated into state-of-the-art structured encryption schemes for SQL data, yielding ahybrid indexingscheme with both partially and fully precomputed join indexes. We then introduce the idea ofleakage-aware query planningby giving a heuristic that helps the client decide, at query time, which index to use so as to minimize leakage and stay below a given bandwidth budget. We conclude by simulating our constructions on real datasets, showing that our heuristic is accurate and that partially-precomputed joins perform well in practice.
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期刊:
IACR Cryptology ePrint Archive
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