One of the prerequisites for information society is secure and reliable communication among computing systems. Accordingly, network security appliances become key components of inf...
Public-key infrastructures are a prerequisite for security in distributed systems and for reliable electronic commerce. It is their goal to provide the authenticity of public keys...
AAIs – Infrastructures for Authentication and Authorisation provide services for service providers on the Internet. Especially if combined with an attribute infrastructure these...
In recent years, many Mobile Payment (MP) schemes have been proposed and used in practise. However, a prerequisite for extended acceptance and adoption of MP technologies is to de...