The goal of zero-knowledge watermark detection is to allow a prover to soundly convince a verifier of the presence of a watermark in certain stego-data without revealing any infor...
A formal top down model shall be presented to aid documentation and harmonization of information security requirements. The model formalizes layered development of inn security, w...
Abstract. Most approaches to the formal analysis of cryptography protocols make the perfect cryptographic assumption, which entails for example that there is no way to obtain knowl...
We introduce the concept of a group principal and present a number of different classes of group principals, including threshold-group-principals. These appear to naturally usefu...
Abstract. We have been witnessing an explosion of user involvement in knowledge creation, publication and access both from within and between organisations. This is partly due to t...