Concluded Projects

Freenet (0.7) implements a novel distributed routing protocol for restricted-route overlay networks. In this project, we show that the efficiency of their new routing algorithm can be easily destroyed by malicious participants or churn.

In this project we deanonymized users of StealthNet (formerly RShare) exploiting flaws in their anonymous routing protocol. We provide a list of users (IP addresses), search queries and shared content.

The first step for any peer joining a P2P network is discovering existing peers in the overlay network. Common solutions rely on well-known centralized servers to provide new nodes this crucial information. Such servers then become easy targets for adversaries and represent a central point of failure for the otherwise decentralized service. In this work, we use statistical information about Internet organizations (specifically DNS SOAs) to fully decentralize this bootstrapping process.