Good public-key infrastructures (PKIs) are essential to make electronic commerce secure. Quite recently, certificate verification trees (CVTs) have been introduced as a tool for im...
In this paper we present PAMINA (Privilege Administration and Management INfrAstructure), a privilege management system using authorization certificates. Our system supports distr...
Abstract. A substantial number of micropayment schemes in the literature are based on distributing the cost of a digital signature over several successive micropayments (e.g. Paywo...
Public-key based certificates provide a standard way to prove one's identity, as attested by some certificate authority (CA). However, plain certificates provide a binary ide...