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A Content Delivery Network (CDN) is a distributed system composed of a large number of nodes that allows users to request objects from nearby nodes. CDN not only reduces the end-to-end latency on the user side but also offloads Content Providers (CPs) providing resilience against Distributed Denial of Service (DDoS) attacks. However, by caching objects and processing users' requests, CDN service providers...
Searchable Symmetric Encryption (SSE) allows users to execute encrypted queries over encrypted databases. A large number of SSE schemes have been proposed in the literature. However, most of them leak a significant amount of information that could lead to inference attacks. In this work, we propose an SSE scheme for a Privacy-preserving Multi-cloud encrypted Database (P-McDb), which aims at preventing...
The evolution of cloud computing and a drastic increase in image size are making the outsourcing of image storage and processing an attractive business model. Although this outsourcing has many advantages, ensuring data confidentiality in the cloud is one of the main concerns. There are state-of-the-art encryption schemes for ensuring confidentiality in the cloud. However, such schemes do not allow...
Cloud computing is an established paradigm that attracts enterprises for offsetting the cost to more competitive outsource data centres. Considering economic benefits offered by this paradigm, organisations could outsource data storage and computational services. However, data in the cloud environment is within easy reach of service providers. One of the strong obstacles in widespread adoption of...
Publish/subscribe is a loosely-coupled communication paradigm which allows applications to interact indirectly and asynchronously. Publisher applications generate events that are sent to interested applications through a network of brokers. Subscriber applications express their interests by specifying filters that brokers can use for routing the events. In many cases it is desirable to protect the...
Traditional data protection schemes deployed in Enterprise Rights Management systems rely on centralised infrastructures where recipients must request authorisation for data access from remote evaluation authorities, trusted by the data originator to keep the data decryption keys and evaluate authorisation policies. During emergency situations when network connection is intermittent these solutions...
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