This thesis evaluates and develops, where this is needed and possible, the technical principles of a cloud marketplace. These basic principles are infrastructure services for managing and provisioning computational power, persistent storage and (virtual) network resources. Furthermore tools are needed to integrate the resources in the form of services and provide the customers a uniform user in...

Cloud computing is an important trend that in many ways is beginning to fulfill the early promise of the Internet and creating unanticipated change in computing paradigm. As promising as cloud computing is, this paradigm brings forth new security and privacy challenges when operating in the untrusted cloud scenarios. Motivated by the challenging problem “Private Searching over Encrypted Data”, ...

We present Hybris key-value store, the first robust hybrid cloud storage system. Hybris robustly replicates metadata on trusted private premises (private cloud), separately from data which is replicated across multiple untrusted public clouds. Hybris introduces a technique we call consistency hardening which consists in leveraging strong metadata consistency to guarantee to Hybris applications ...

Cloud computing has redefined the way in which Spatial Data Infrastructures (SDI) and Web geoportals are designed, managed, and maintained. The cloudification of a geoportal represents the migration of a full-stack geoportal application to an internet-based private or public cloud. This work introduces two generic and open cloud-based architectures for auto-scalable Web geoportals, illustrated ...

SAP applications can often comprise the core of IT operations in large enterprises. Companies that outsource their SAP landscape and basic operation to a private cloud can manage their resources flexibly in a way that meets demand and saves costs. Dynamic Services for SAP Solutions* and Application Operations for SAP Solutions* form a private cloud solution from TSystems which comprises both th...

FINESCE is the Smart Energy use case project of the Future Internet Public Private Partnership Programme. It aims at defining an open infrastructure based on Information and Communications Technology (ICT) used to develop new solutions and applications in all fields of Future Internet related to the energy sector. To accomplish this goal a cloud-based environment is proposed, providing high sca...

Cloud computing is one of the most important technology of networking which is widely used in these days. Cloud computing has some security issue also. There are several types of attacks which can be launch on cloud very easily and has many serious effects on the network. This paper discussed the proposed scheme to overcome the adversary effects of virtual side channel effects. Keywords— Privat...

Cloud computing technology use central server and provide applications as services to users. The organization can take advantage of reducing the cost of hardware and software ownership and maintenance. Many surveys proved cloud computing reduces total cost of ownership. But due to centralized server approach there is always risk to system security. All applications required by different set of ...

Cloud computing allows their clients to share data. Multiple parties may join through conducting joint Back propagation neural network learning on the union of their respective data sets. During this process no party wants to disclose her/his private data to others. Existing schemes supporting this kind of collaborative learning are either limited in the way of data partition or just consider t...

The advent of smartphones in recent years has changed the wireless landscape. Smartphones have become a platform for online user interface to cloud databases. Cloud databases may provide a large set of user-private and sensitive data (i.e., objects), while smartphone users (i.e., subjects) provide locationsensitive information. Secure and private services in wireless accessing to cloud database...