Abstract. Security documents (currency, treasury bills, stocks, bonds, birth certificates, etc.) provide an interesting problem space for investigating information hiding. Recent a...
Abstract. In this article, it is discussed how to construct a compression function with 2n-bit output using a component function with n-bit output. The component function is either...
: As many European countries are about to introduce national ID cards, which are compliant to the European Citizen Card specification prCEN 15480 it is natural to study how those c...
Abstract: Alter Egos represent people in Cyberspace. An Alter Ego is a kind of intelligent agent who is active in performing actions in behalf of the person it represents. How thes...
Knowledge-based programs provide an abstract level of description of protocols in which agent actions are related to their states of knowledge. The paper describes how epistemic mo...