Structured peer-to-peer systems or distributed hash tables (DHT) are self-organizing distributed systems designed to support efficient and scalable lookups with dynamic network topology changes. Nodes are organized as structured overlay networks, and data is mapped to nodes in the overlap network based on their identifier. There are two main types of structured peer-to-peer architectures: flat ...

Structured peer-to-peer (P2P) overlay are scalable, robust and self-organizing in nature, and provide a promising platform for a range of large-scale distributed applications. Applications proposed to date utilize a similar key-based routing service but “re-invent the wheel” by deploying their own dedicated structured P2P overlay network. This is highly inefficient and results in a significant ...

Distributed hash tables (DHTs), used in a number of structured peer-to-peer (P2P) systems provide efficient mechanisms for resource placement and location. A key distinguishing feature of current DHT systems, such as Chord, Pastry, CAN and Tapestry, is the way they handle locality in the underlying network. Topology-based node identifier assignment, proximity routing, and proximity neighbor sel...

Anonymous Routing in Structured Peer-to-Peer Overlays

Existing peer-to-peer systems that aim to provide anonymity to its users are based on networks with unstructured or loosely-structured routing algorithms. Structured routing offers performance and robustness guarantees that these systems are unable to achieve. We therefore investigate adding anonymity support to structured peer-to-peer networks. We apply an entropy-based anonymity metric to Cho...

Locating suitable resources within a Peer-2-Peer (P2P) system is a computationally intensive process, with no guarantee of quality and suitability of the discovered resources. An alternative approach is to categorise peers based on the services they provide – leading to the interaction between peers with common goals to form societies/communities. Organization of peers in different communities ...