Confidentiality and Availability of Data Warehouses in the Cloud Computing System

With the advent of cloud computing as a new deployment model of computer systems, data warehouses benefit from this new paradigm. In this context, it becomes necessary to protect these data warehouses of different risks and dangers that are born with cloud computing. Consequently, we propose in this work a way to limit these risks through the algorithm secret key sharing of Shamir and we put this contribution into practice.