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VERIFIABLE ATTRIBUTE-BASED KEYWORD SEARCH OVER OUTSOURCED ENCRYPTED DATA

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In this abstract propose a novel cryptographic solution , called verifiable attribute-based keyword search ( VABKS ). The solution allows a data user, whose credentials satisfy a data owner’s access control policy, to (i) search over the data owner’s outsourced encrypted data, (ii) outsource the tedious search operatio ns to the cloud, and (iii) verify […]

SOURCE PRIVACY WITH HOP-BY-HOP MESSAGE AUTHENTICATION IN WIRELESS SENSOR NETWORKS

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Message authentication plays a key role in thwarting unauthorized and corrupted messages from being forwarded in networks to save the precious sensor energy. For this reason, many authentication schemes have been proposed in literature to provide message authenticity and integrity verification for wireless sensor networks. In this abstract, we propose an unconditionally secure and efficient […]

VABKS OVER OUTSOURCED ENCRYPTED DATA

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Cloud computing allows data owners to use massive data storage and vast computation capabilities at a very low price. Despite the benefits, data outsourcing deprives data owners of direct control over their outsourced data. It is common nowadays for data owners to outsource their data to the cloud. Since the cloud cannot be fully trusted, […]

DYNAMIC RESOURCE PRICING AND COMPETITION AMONG CLOUD PROVIDERS

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The competition among providers leads to the dynamics of cloud resource pricing. Modelling this competition involves the description of the user’s choice behaviour and the formulation of the dynamic pricing strategies of providers to adapt to the market state. Cloud providers may cooperate with each other to improve their final revenue. Based on a Service […]

WIRELESS SENSOR NETWORKS WITH HOP-BY-HOP MESSAGE AUTHENTICATION AND SOURCE PRIVACY

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In this abstract, we propose an unconditionally secure and efficient source anonymous message authentication (SAMA) scheme based on the optimal modified ElGamal signature (MES) scheme on elliptic curves. This MES scheme is secure against adaptive chosen-message attacks in the random oracle model. Our scheme enables the intermediate nodes to authenticate the message so that all […]

COMPETITION AND COOPERATION AMONG CLOUD PROVIDERS USING A NOVEL MODEL

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A provider naturally wishes to set a higher price to get a higher revenue; however, in doing so, it also bears the risk of discouraging demand in the future. On the other hand, they also look for the means to cooperate with other providers to reduce the operation cost and therefore improve their final revenue. […]

UNTRUSTED CLOUD ENVIRONMENTS USING SECURE KNN QUERY PROCESSING

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Users send their current location as the query parameter, and wish to receive as result the nearest POIs, i.e., nearest – neighbors (NNs). But typical data owners do not have the technical means to support processing queries on a large scale, so they outsource data storage and querying to a cloud service provider. Many such […]

K-NEAREST NEIGHBOUR QUERY PROCESSING IN UNTRUSTED CLOUD ENVIRONMENTS

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The emergence of mobile devices with fast Internet connectivity and geo-positioning capabilities has le d to a revolution in customized location – based services (LBS) , where users are enabled to access information about points of interest (POI ) that are relevant to their interests and are also close to their geographical coordinates. Pro b- […]

OPTIMAL MEETING LOCATION DETERMINATION ON MOBILE DEVICES FOR PRIVACY

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Smartphone technology in urban communities has enabled mobile users to utilize context-aware services on their devices. Service providers take advantage of this dynamic and ever-growing technology landscape by proposing innovative context-dependent services for mobile subscribers. Location-based Services (LBS), for example, are used by millions of mobile subscribers every day to obtain location-specific information. In this […]

RELATIONAL DBMSS WITH SHORTEST PATH COMPUTING

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Graph search is highly needed in applications over graphs. Specifically, graph search seeks a sub-graph(s) meeting the specific purposes, such as the shortest path between two nodes, the minimal spanning tree, the salesman traveling path, and the like. We also observe that these graphs are always exceedingly large and keep growing at a fast rate. […]