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features which allow attacks, especially DDoS attacks. In this paper, we proposed a new DDoS attack caused by changing source IP address in response message of source search. In the proposed attack, there are two types of attackers, which change their KadID as KeywordID for keyword search and File Hash for source search as
We propose a new distributed architecture that aims to investigate and control the spread of contents in the KAD P2P network through the indexation of keywords and files. Our solution can control the DHT at a local level with a new strategy bypassing the Sybil attack protections inserted in KAD. For the targeted DHT
Previously, we proposed efficient, scalable decentralized processing of SPARQL queries for an ad-hoc Semantic Web data sharing system and explored optimization techniques. However, it has proven to be difficult to measure the performance of the proposed query processing in a decentralized settings with existing tools. This is because assessments on SPARQL query performance were typically targeted...
, we argue in favour on the security of multiserver block-based SSE to resist such attacks, where multiple storage servers are used and the documents are stored in the form of sets of encrypted document blocks. We show that the distribution of documents over keyword subsets in such designs can be used to reduce adversary
The emergence of cloud datacenters enhances the capability of online data storage. Since massive data is stored in datacenters, it is necessary to effectively locate interest data in such a distributed system. However, traditional search techniques only allow users to search images over exact-match keywords through a
videos. The transcriptions from a speech-recognition engine (SRE) are sufficient to create a chain index for detailed browsing inside a lecture video. The index structure and the evaluation of the supplied keywords are presented. The user interface for dynamic browsing of the e-learning contents concludes this paper.
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