This paper describes PayCash, an Internet payment system that was designed to offer strong security and privacy protection. This system is based on the concept of electronic cash,...
CAFE ("Conditional Access for Europe") is an ongoing project in the European Community's ESPRIT program. The goal of CAFE is to develop innovative systems for condit...
Jean-Paul Boly, Antoon Bosselaers, Ronald Cramer, ...
This paper introduces and solves a security problem of pervasive computing: how to define authorizations for offline interactions when trust relationships among entities do not ex...
For the two last decades, electronic authentication has been an important topic. The first applications were digital signatures to mimic handwritten signatures for digital document...
Abstract. Anonymity features of electronic payment systems are important for protecting privacy in an electronic world. However, complete anonymity prevents monitoring financial t...