Private Information Retrieval over ICN
Christian Tschudin · 2016
Private Information Retrieval (PIR) is a well-known cryptographic primitive: When accessing some database records, the database server (as well as any external observer also seeing requests and replies) should not be able to learn which record has been requested. In this paper we demonstrate a way to achieve PIR in the context of Information Centric Networking (ICN). Our solution is able to conceal access to single ICN data objects as well as larger collections, leaking only the number of requests while keeping names and the knowledge which information was fetched fully private.