An electronic signature infrastructure for mobile devices

The mobile commerce will come true when we provide the certification and electronic signature services necessary to make the electronic transactions secure. However, at this moment, the mobile technologies can not offer us theses services or they are much reduced. This paper discusses the main drawbacks of these technologies and describes the infrastructure and components that we have developed in response to this need. The infrastructure, as a result of a project between a Spanish mobile operator and the University of Murcia, offers the applications, certification services and electronic signature combined with the use of highly-recognized standards. With Windows mobile, we made components to the process of certification, the signing and time-stamping of an electronic document and the important problem of the validation of a certificate. Our infrastructure has also been tested in a real environment, providing us an interesting feedback based on technical and user-friendly matters.