New security protocols and approaches to application service providing for mobile devices on internet

In Application Service Providing (ASP) frameworks, security is one of the most important issues. Current approaches implementing such frameworks take advantage of elaborated protection mechanisms like signatures, public and private key encryption and SmartCards. Those technologies are demanding in terms of processing power, so that many of them are not or only partly applicable on mobile clients and their limited capacities. This paper describes new methods to guarantee an acceptable degree of security, if such devices are to be used within ASP frameworks.