Search with privacy-preserving guarantee has been a critical issue for commercial cloud storage. Data owners outsource a large number of encrypted sensitive data to cloud and allow data users to search and retrieve encrypted data in cloud. Recently, Cao et al. [1] proposed a scheme to enable multi-keyword ranked search over encrypted data. In this paper, we focus on practical factors and incremental update in cloud.
We utilize document replication and partition with one-to-many order preserving encryption to achieve privacy-preserving guarantees. We also introduce an index structure to provide efficient incremental update. Under a reasonable practical situation, the proposed scheme is more efficient than previous works and has lower communication overhead.
Continue Reading
To automate malware analysis, dynamic malware analysis systems have attracted increasing attention from both the industry and research communities. Of the various logs collected by such systems, the API call…
In recent years, the data growth rate has been observed growing at a staggering rate. Considering data search as a primitive operation and to optimize this process on large volume…
Cloud computing has become very popular in recent years. Various SaaS, PaaS and IaaS systems for collaborative software development have been proposed. We also have proposed a PaaS system that…
We analyze the outage probability of dual-hop full-duplex decode-and-forward relaying for an orthogonal frequency division multiplexing system in the presence of I/Q imbalance. We derive accurate analytical approximations which quantify…
In many hospitals, data related to patients are observed and collected to a central database for medical research. For instance, DPC dataset, which stands for Disease, Procedure and Combination, covers…
Cooperative communication is considered one of efficient techniques to overcome fading in wireless networks since it can achieve spatial diversity. Employing all the relays in the network to transfer the data, consumes…
Vehicle-to-Pedestrian (V2P) communication using wireless LAN (Local Area Network) has issues. Fast Device Discovery is one of them. In this paper, we proposed two novel methods to solve this issue. The methods…
Implanted medical sensors and actuators within the human body will enable remote data gathering, diagnosis, and the ability to directly control drug delivery actuators. To establish the communicationlinks through the body…
We propose algorithms to automatically deploy a group of mobile robots and provide coverage of a non-convex environment with communication limitations. In settings such as hilly terrain or for underwater ocean gliders,…