In this paper, we build, in a generic way, two asymmetric cryptosystems with a careful study of their security. We present first an additively homomorphic scheme which generalizes,...
Abstract. Besides the pure technical features, the usability of a PKIenabled application plays a crucial role since the best security application will fail in practice if its usabi...
The distribution of the German government between Bonn and Berlin calls for the technical support for the collaborative document-based tasks performed by inter- and intra-minister...
The use of new technology must be combined with modern teaching practices to be effective. Collaborative learning is a general term employed for a variety of classroom practices d...