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Xingbang Tian, Baohua Huang, Min Wu.  2014.  A transparent middleware for encrypting data in MongoDB. Electronics, Computer and Applications, 2014 IEEE Workshop on. :906-909.

Due to the development of cloud computing and NoSQL database, more and more sensitive information are stored in NoSQL databases, which exposes quite a lot security vulnerabilities. This paper discusses security features of MongoDB database and proposes a transparent middleware implementation. The analysis of experiment results show that this transparent middleware can efficiently encrypt sensitive data specified by users on a dataset level. Existing application systems do not need too many modifications in order to apply this middleware.