Node lookup mechanisms constitute an integral part of any overlay network, and hence also of anonymous communication networks. Today, most anonymizers use centralized directories, ...
Abstract. In this paper, we study the soundness amplification by repetition of cryptographic protocols. As a tool, we use the Chernoff Information. We specify the number of attempt...
Most of the work in the analysis of cryptographic schemes is concentrated in abstract adversarial models that do not capture side-channel attacks. Such attacks exploit various for...
Aggregate message authentication codes, as introduced by Katz and Lindell (CT-RSA 2008), combine several MACs into a single value, which has roughly the same size as an ordinary MA...
Oliver Eikemeier, Marc Fischlin, Jens-Fabian G&oum...
In this work we re-visit the question of building cryptographic primitives that remain secure even when queried on inputs that depend on the secret key. This was investigated by B...