We study the two-party commitment problem, where two players have secret values they wish to commit to each other. Traditional commitment schemes cannot be used here because they do not guarantee independence of the committed values. We present three increasingly strong definitions of independence in this setting and give practical protocols for each. Our work is related to work in non-malleabl...

The focus of social simulation on representing the world calls for an investigation whether its implementations are inherently value-laden. In this article, I investigate what kind thing implementation is in and consider extent to which it has moral significance. When purpose a computational artefact simulating human institutions, designers with different value judgements may have rational reas...

This paper describes a modular decentralized middleware framework for dynamic application reconfiguration in large scale heterogeneous environments. Component malleability is presented as a dynamic reconfiguration strategy. Dynamic component granularity enables improved load balancing by component migration, and most importantly, it enables applications to scale up to arbitrarily large numbers ...

Chat tools are nowadays an integral part of many collaborative e-learning environments. However, standard chat tools suffer from important coordination and coherence deficiencies. In this paper we propose an open source generic framework for building malleable structured chat applications. Users can strengthen or relax constraints when they want during a chat session. The paper shows some demon...

In this paper we try to unify the frameworks of definitions of semantic security, indistinguishability and non-malleability by defining semantic security in comparison based framework. This facilitates the study of relations among these goals against different attack models and makes the proof of the equivalence of semantic security and indistinguishability easier and more understandable. Besid...