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In this paper, we propose a structured peer-to-peer (P2P) search approach in distributed hash table (DHT) based decentralized systems using multiple keywords. Using multiple keywords allows users to describe file content more accurately and improves retrieval precision, which is important from the userpsilas
important role to help communicate cloud computing system components. Tree based data structures are also used as index to perform the search faster. Currently most of the cloud providers use the keyword based search. Multi-attribute search optimizes the search process and also performs the search faster. The paper proposes a
new algorithm is put forward to search all relevant authorization certificates which satisfy the query consisting of partial keywords. In addition to this we bring forward a new algorism to discover authorization certificates chain which could create the littlest credential graphs.
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