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Outsource encrypted data has attracted attentions from industry and academics for storing sensitive data in third party clouds. Many cloud applications need privacy preserving multiple keywords search services over encrypted data with dual capabilities. On one hand, they need to keep the query keywords and associated search operations private such that data hosting service providers cannot trace and...
An encryption scheme is key-dependent message chosen plaintext attack (KDM-CPA) secure means that it is secure even if an adversary obtains encryptions of messages that depend on the secret key. However, there are not many schemes that are KDM-CPA secure, let alone key-dependent message chosen ciphertext attack (KDM-CCA) secure. So far, only two general constructions, due to Camenisch, Chandran, and...
Querying over encrypted data is gaining increasing popularity in cloud based data hosting services. Security and efficiency are recognized as two important and yet conflicting requirements for querying over encrypted data. In this paper we propose an efficient public-key encryption with keyword search scheme (EPEKS for short) that support binary search for inverted index-based encrypted data. First,...
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