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Collaboration is a huge part of modern software development. Yet most tools used in software development are aimed for single user instances. To support collaborative software practices, researchers and practitioners have presented several tools. The existing tools support collaboration either through distributed version control systems or through client/server-based concurrent text editors. Distributed...
Peer-to-Peer Content Delivery Networks (P2P CDNs) have attracted considerable attention as a way to distribute digital contents to paid users in a scalable and dependable manner. However, due to its peer-to-peer nature, it faces threat from colluders who paid for the contents but illegally share the contents to unauthorized peers. the detection of colluders is an important task for commercial P2P...
In this paper, we proposed a user management scheme for Peer-to-Peer (P2P) contents sharing systems. The proposed scheme assumes the existence of peer groups which provide sensitive, confidential contents to the group members, and controls the membership through the collaboration among group members. As the key technique, we use the delegation of the task of qualification to few selected group members,...
Distributed Hash Tables (DHTs) attract considerable attention as a way of realizing an efficient lookup service in Peer-to-Peer (P2P) applications. However, many of conventional DHTs such as Chord and Kademlia do not take into account the proximity of nodes in the physical network, which causes a significant performance degradation as the size of the underlying network grows. In this paper, we propose...
Peer-to-Peer (P2P) systems have attracted considerable attention in recent years, as a key technology to realize scalable, dependable network services. However, because of its high anonymity, P2P systems involve several flaws such as the weakness against malicious attacks by anonymous peers. In this paper, we propose a method to evaluate the trustfulness of each peer by explicitly taking into account...
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