In this paper we shall introduce a new electronic payment concept based on the popular direct debit payment model, entitled periodical payments. The direct debit model currently i...
Data is routinely created, disseminated, and processed in distributed systems that span multiple administrative domains. To maintain accountability while the data is transformed b...
ded abstract of this paper appears in Advances in Cryptology -- EUROCRYPT '08, Lecture Notes in Computer Science Vol. 4965, N. Smart ed., Springer-Verlag, 2008. This is the fu...