This paper proposes two integrity verification schemes based on Schnorr Signature Scheme, which are named Safety Integrity Verification Scheme (SIVS) and Efficient Integrity Verification Scheme (EIVS). In the two verification schemes, for the user’s each challenge, the cloud storage server chooses randomly the sets of file blocks and verification blocks to generate response values, and the user...

Cloud computing paradigm enables the users to access the outsourced data from the cloud server without the hardware and software management. For the effective utilization of sensitive data from CSP, the data owner encrypts before outsourcing to the cloud server. To protect data in cloud, data privacy is the challenging task. In order to address this problem, we proposed an efficient data securi...

In the era of information explosion, people have to deal with huge amount of data. It is a great computation burden for the resourceconstrained clients. Cloud computing connects large amounts of network resources, and forms a vast pool of resources. It provides much convenience for people. Clients can outsource the complex computation task to the powerful cloud server. In this way, the computat...

Abstract. Cloud-computing shares a common pool of resources across customers at a scale that is orders of magnitude larger than traditional multi-user systems. Constituent physical compute servers are allocated multiple “virtual machines” (VM) to serve simultaneously. Each VM user should ideally be unaffected by others’ demand. Naturally, this environment produces new challenges for the service...

Mobile devices commonly access shared data stored on a server. To ensure responsiveness, many applications maintain local replicas of the shared data that remain instantly accessible even if the server is slow or temporarily unavailable. Despite its apparent simplicity and commonality, this scenario can be surprisingly challenging. In particular, a correct and reliable implementation of the com...

Encryption is an optimistic way to preserve the secrecy of the outsource data. On other hand, performing search operation on encrypted data is a complicated job. A lot of encryption techniques have been suggested by researchers to avoid improper usage of unstructured data on the cloud. But still by using the existing searchable encryption techniques, searching data on cloud server becomes diffi...

The authors present their experience and practices of introducing cloud services, as a means to simplify the adoption of ICT (Information Communication and Technology) in education, using Free/Open Source Software. The solution creates a hybrid cloud infrastructure, in order to provide a pre-installed (Ubuntu and Linux Terminal Server Project) virtual machine, acting as a server inside the scho...

Cloud Structure delivers infrastructure, platform and software as a service which are made available in pay-as-you go model. Cloud storage is a model of networked online storage where data is stored in virtualized pools of storage which are generally hosted by third parties. Users interact with the cloud servers through Cloud Storage Providers (CSP) to access or retrieve the data. Users have no...

Semantic caching is a technique used for optimizing the evaluation of database queries by caching results of old queries and using them when answering new queries. CoopSC is a cooperative database caching architecture, which extends the classic semantic caching approach by allowing clients to share their local caches in a cooperative matter. Thus, this approach decreases the response time of da...

Cloud is a virtualized server pool which can provide the different computing resources of their user’s. In cloud computing, the data will be stored in storage provided by CSP (Cloud service Provider). Service providers must have a feasible way to protect their user’s data, especially to prevent the data from disclosure by Malicious Insiders. This paper also illustrated the data privacy problem ...