1,720,979 research outputs found
Improving Sender Anonymity in a Structured Overlay with Imprecise Routing
No full textIn the framework of peer to peer distributed systems, the problem of anonymity in structured overlay networks remains a quite elusive one. It is especially unclear how to evaluate and improve {\em sender} anonymity, that is, untraceability of the peers who issue messages to other participants in the overlay. In a structured overlay organized as a chordal ring, we have found that a technique originally developed for {\em recipient} anonymity also improves sender anonymity. The technique is based on the use of imprecise entries in the routing tables of each participating peer. Simulations show that the sender anonymity, as measured in terms of average size of anonymity set, decreases slightly if the peers use imprecise routing; yet, the anonymity takes a better distribution, with good anonymity levels becoming more likely at
the expenses of very high and very low levels. A better quality of anonymity service is thus provided to participants
Open Data for the masses - Unleashing personal data into the wild
No full textIn these years the public administration is undergoing a deep transformation, driven by a greater demand for transparency and efficiency in a participative framework involving nonprofit organizations, businesses, and citizens, with the modern network infrastructures as a common medium. The Open Data movement is considered to be one of the keys of this change. In this position paper we argue that the work done so far in the Open Data field, i.e. offering massive public datasets, is just a preliminary answer. We argue that a few open standards concerning online authorization, access control, and data exportation, are emerging; these standards, if adopted by the public administration (but also business companies and any other organization), will trigger the release of a much wider and more useful wave of open data, able to sustain a new generation of helpful online personalized services, based on personal data whose ownership is given back to individual people
Using a self-connected Gigabit Ethernet adapter as a memcpy() low-overhead engine for MPI
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