Drizzle: the RAIN prototype

Abstract

Internet communities are moving to the Cloud, but in addition to the advantages regarding cost and convenience, this also means that cloud service providers are increasingly in a position to aggregate large amounts of personal data, which means that it is becoming prudent to develop mechanisms that can contribute to limiting the information available to providers. In this paper we present a prototype cloud security solution for protection against an “honest but curious” cloud provider. The solution is based on splitting up data and distributing it to multiple cloud providers, without encrypting the individual pieces. Our initial tests indicate that our solution is sufficiently efficient for normal use.