期刊
KNOWLEDGE-BASED SYSTEMS
卷 79, 期 -, 页码 18-26出版社
ELSEVIER
DOI: 10.1016/j.knosys.2014.04.010
关键词
Data query; Outsourcing; Privacy; Format-preserving encryption; Cloud Computing
资金
- National Natural Science Foundation of China [61100224, 61300241, 61272455]
- Natural Science Foundation of Guangdong Province [S2013010013671]
- Guangzhou Zhujiang Science and Technology Future Fellow Fund [2012J2200094]
- Department of Education, Guangdong Province, China 111 Project [B08038]
- Ministry of Education of China [20130203110004]
- Program for New Century Excellent Talents in University [NCET-13-0946]
- Fundamental Research Funds for the Central Universities [BDY15]
- National Natural Science Foundation of Tianjin [13JCQNJC00300]
- Specialized Research Fund for the Doctoral Program of Higher Education of-China [20120031120036]
- Research Grants Council of the HKSAR, China [CityU 123913]
With the advent of cloud computing, individuals and organizations have become interested in moving their databases from local to remote cloud servers. However, data owners and cloud service providers are not in the same trusted domain in practice. For the protection of data privacy, sensitive data usually have to be encrypted before outsourcing, which makes effective database utilization a very challenging task. To address this challenge, in this paper, we propose L-EncDB, a novel lightweight encryption mechanism for database, which (i) keeps the database structure and (ii) supports efficient SQL-based queries. To achieve this goal, a new format-preserving encryption (FPE) scheme is constructed in this paper, which can be used to encrypt all types of character strings stored in database. Extensive analysis demonstrates that the proposed 1,-EncDB scheme is highly efficient and provably secure under existing security model. (C) 2014 Elsevier B.V. All rights reserved.
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