[Dmbu-l] Fwd: PhD Thesis Defense, Xianrui Meng - Mon July 25, 2016 at 11:00am in MCS 148

Xianrui Meng xmeng at bu.edu
Wed Jul 20 15:36:29 EDT 2016


*Ph.D. Thesis Defense *
*PRIVACY-PRESERVING QUERIES ON ENCRYPTED DATABASES *
*Xianrui Meng, BU*
*Monday, July 25th, 2016 at 11:00 am in MCS 148*

*Abstract: *
In today's internet, with the advent of cloud computing, there is a natural
desire for enterprises, organizations, and end users to outsource
increasingly large amounts of data to a cloud provider. Therefore, ensuring
security and privacy is becoming a significant challenge for cloud
computing, especially for users with sensitive and valuable data. Recently,
many efficient and scalable query processing methods over encrypted data
have been proposed. Despite that, numerous challenges remain to be
addressed due to the high complexity of many important queries on encrypted
large-scale datasets.  This thesis studies the problem of
privacy-preserving database query processing on structured data (e.g.,
relational and graph databases). In particular, this thesis proposes
several practical and provable secure structured encryption schemes that
allow the data owner to encrypt data without losing the ability to query
and retrieve it efficiently for authorized clients. This thesis includes
two parts. The first part investigates graph encryption schemes. This
thesis proposes a graph encryption scheme for approximate shortest distance
queries. Such scheme allows the client to query the shortest distance
between two nodes in an encrypted graph securely and efficiently. Moreover,
this thesis also explores how the techniques can be applied to other graph
queries. The second part of this thesis proposes secure top-k query
processing schemes on encrypted relational databases. Furthermore, the
thesis develops a scheme for the top-k join queries over multiple encrypted
relations. Finally, this thesis demonstrates the practicality of the
proposed encryption schemes by prototyping the encryption systems to
perform queries on real-world encrypted datasets.

*Committee: George Kollios - Computer Science, Boston University Seny
Kamara  -  Computer Science, Brown University *
*Steve Homer -    Computer Science, Boston University *
*Alina Oprea  -    Computer Science, Northeastern University, RSA
LabEvimaria Terzi (Chair) -   Computer Science, Boston University *
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