Using laptop to record lectures1/9/2024 If the user is actually interested in documents containing each of several keywords (conjunctive keyword search) the user must either give the server capabilities for each of the keywords individually and rely on an intersection calculation (by either the server or the user) to determine the correct set of documents, or alternatively, the user may store additional information on the server to facilitate such searches. Work in this area has largely focused on search criteria consisting of a single keyword. In order to retrieve documents satisfying a certain search criterion, the user gives the server a capability that allows the server to identify exactly those documents. We study-the setting in which a user stores encrypted documents (e.g. Extensive performance studies are carried out to evaluate the overhead and the efficiency of the schemes. We use APSE to construct two secure schemes that support kNN computation on encrypted data each of these schemes is shown to resist practical attacks of a different background knowledge level, at a different overhead cost. We develop a new asymmetric scalar-product-preserving encryption (ASPE) that preserves a special type of scalar product. As a case study, we focus on the problem of k-nearest neighbor (kNN) computation on an encrypted database. In this paper we discuss the general problem of secure computation on an encrypted database and propose a SCONEDB Secure Computation ON an Encrypted DataBase) model, which captures the execution and security requirements. Unfortunately, traditional encryption methods that aim at providing "unbreakable" protection are often not adequate because they do not support the execution of applications such as database queries on the encrypted data. To enforce security and privacy on such a service model, we need to protect the data running on the platform. ![]() They turn their huge infrastructure into a cloud-computing environment and aggressively recruit businesses to run applications on their platforms. Service providers like Google and Amazon are moving into the SaaS (Software as a Service) business.
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