PRISMACLOUD Tools: A cryptographic toolbox for increasing security in cloud services. reusable toolbox encapsulating cryptographic functionality from which dependably secure cloud services can be assembled. In order to provide a tangible abstraction of the complexity involved with the construction
of cryptographically secured cloud services, we introduce the fourlayer PRISMACLOUD architecture. Top down, it consists of a use cases (application) layer, a services layer, a tools layer, and a
cryptographic primitives and protocols layer. In this paper we provide a detailed description of the PRISMACLOUD tools in terms of functional components, as well as how they interact to provide the desired security functionality.
(Note: PRISMACLOUD is part of TRUSTEE (daTa pRivacy and cloUd SecuriTy clustEr Europe), a network of 11 research projects funded by the European Union which are all performing cutting-edge research and innovation in different domains of cloud security and privacy, ranging from secure and privacy-friendly authentication over encrypted and distributed solutions for data sharing and cloud storage to data integrity, authenticity, and availability.)