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Flexible Access Control and Confidentiality over Encrypted Data for Document-based Database

In this paper, we present a SDDB scheme regarding document-based store that satisfies three security requirements: confidentiality, flexible access control, and querying over encrypted data. The scheme is inspired by PIRATTE and CryptDB concepts. PIRATTE is a proxy for sharing encrypted files through a social network between the data owner and the number of users and the files are decrypted on user side with the proxy key, whereas in CryptDB, it is proxy between a database and one user to encrypt or decrypt data based on user’s queries. The scheme also improves CryptDB security and provides the possibility of sharing data with multi-users through PIRATTE concept which is used to verify authentication on the proxy side.