Encryption provides a method to protect data out-sourced to a DBMS provider, eg, in the
cloud. However, performing database operations over encrypted data requires specialized …

" Big data" applications are collecting data from various aspects of our lives more and more
every day. This fast transition has surpassed the development pace of data protection …

MapReduce is one of the most popular distributed programming paradigms that allows
processing big data sets in parallel on a cluster. MapReduce users often outsource data and …

In this thesis, we study distributed computations in the cloud following the MapReduce
paradigm. We start this first chapter with a brief history of cryptography, and present cloud …

In the age of social networks and connected objects, many and diverse data are produced at
every moment. The analysis of these data has led to a new science called" Big Data". To …