Higher-order masking is a widely used countermeasure to make software implementations of blockciphers achieve high security levels against side-channel attacks. Unfortunately, it often comes with a strong impact in terms of performances which may be prohibitive in some contexts. This situation has motivated the research for efficient schemes that apply higher-order masking with minimal performa...

In order to make software components more flexible and reusable it is desirable to provide business users with facilities to assemble and control them, but without first being converted into programmers. We present our fully-functional prototype middleware system where variability is externalized so that core applications need not be altered for anticipated changes. Application behavior modific...

This paper focuses on the practical significance of visual tools in Knowledge Management (KM) and Information Systems (IS) development in the context of the development of MaKE, a KM method. Visual tools are used extensively in KM and IS. However, this paper identifies a dilemma in the use of visual tools and examines how this dilemma was addressed during the development of some visual tools in...

Many distributed systems manage some form of long-lived data, such as files or data bases. The performance and fault-tolerance of such systems may be enhanced if the repositories for the data are physically distributed. Nevertheless, distribution makes security more difficult, since it may be difficult to ensure that each repository is physically secure, particularly if the number of repositori...

As we use software in increasingly varied contexts, the concept of a software license has become progressively more complex. Software is embedded in devices that do not obviously resemble computers. Web services make software on one computer available to anyone with internet access. An individual may use several computers over the course of the day so the concept of a node locked or individual ...

On the basis of extensive research on the relationship between physical activity, exercise and health, as well as strong support from policymakers and practitioners, the "Exercise is Medicine" initiative has become something of a linchpin in the agenda for modern healthcare reform and reflects a broader acceptance that the philosophy of health politics must shift from social engineering to perf...