With the fast progression of data exchange in electronic way, information security is becoming more important in data storage and transmission. Because of widely using images in industrial process, it is important to protect the confidential image data from unauthorized access. In this paper, we analyzed current image encryption algorithms and compression is added for two of them (Mirror-like i...

This paper describes the PERMIS PMI role based authorisation policy, and shows how it has been applied to the electronic transfer of prescriptions (ETP). The assignment of roles is distributed to the appropriate authorities in the health care and government sectors. This includes the assignment of both professional roles such as doctor and dentist, as well as patient roles that entitle patients...

Security is a precondition for the success of an electronic market system. Unless the system is able to provide some mechanism to ensure authentication, authorization, and secure data transmission, the system will have problems to be accepted by both customers and providers. In this paper, we will discuss some ideas how to add security to a distributed electronic market system that is designed ...