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L-EncDB: a lightweight framework for privacy-preserving data queries in cloud computing
Li, Jin; Liu, Zheli; Chen, Xiaofeng; Xhafa Xhafa, Fatos; Tan, xiao; Wong, Duncan S.
Universitat Politècnica de Catalunya. Departament de Ciències de la Computació
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.
Peer Reviewed
Àrees temàtiques de la UPC::Informàtica::Seguretat informàtica
Cloud computing
Computer security
data query
format-preserving encryption
cloud computing
encrypted data
Computació en núvol
Encriptació de dades (Informàtica)

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