CONVERSION OF DOMAIN TYPE ENFORCEMENT LANGUAGE TO THE JAVA SECURITY MANAGER

With today's prevalence of Internet-connected systems storing sensitive data and the omnipresent threat of technically skilled malicious users, computer security remains a critically important field. Because of today's multitude of vulnerable systems and security threats, it is vital that computer science students be taught techniques for programming secure systems, especially since many of them will work on systems with sensitive data after graduation. Teaching computer science students proper design, implementation, and maintenance of secure systems is a challenging task that calls for the use of novel pedagogical tools. This report describes the implementation of a compiler that converts mandatory access control specification Domain-Type Enforcement Language to the Java Security Manager, primarily for pedagogical purposes. The implementation of the Java Security Manager was explored in depth, and various techniques to work around its inherent limitations were explored and partially implemented, although some of these workarounds do not appear in the current version of the compiler because they would have compromised cross-platform compatibility. The current version of the compiler and implementation details of the Java Security Manager are discussed in depth.

Driving the refactoring of Java Enterprise applications by evaluating the distance between application elements

Java Enterprise Applications (JEAs) are complex systems composed using various technologies that in turn rely on languages other than Java, such as XML or SQL. Given the complexity of these applications, the need to reverse engineer them in order to support further development becomes critical. In this paper we show how it is possible to split a system into layers and how is possible to interpret the distance between application elements in order to support the refactoring of JEAs. The purpose of this paper is to explore ways to provide suggestions about the refactoring operations to perform on the code by evaluating the distance between layers and elements belonging those layers. We split JEAs into layers by considering the kinds and the purposes of the elements composing the application. We measure distance between elements by using the notion of the shortest path in a graph. Also we present how to enrich the interpretation of the distance value with enterprise pattern detection in order to refine the suggestion about modifications to perform on the code.

Etwas über die Rosenkultur auf der Insel Java

W. Reuschenbach

Einiges aus der Mappe des Freiherrn von Blittersdorff, vormaligen Großherzoglich Badischen Staatsministers und Bundestagsgesandten

Boberach: Die Veröffentlichung eines Memorandums über die deutschen Bundesverhältnisse (1833), von Aufzeichnungen über Unterredungen mit dem Bundespräsidialgesandten Graf Münch von Bellinghausen, dem badischen Generalleutnant Frh. v. Tettenborn und von Korrespondenz (1842-1843, 1847-1848) mit ihnen und Großherzog Leopold von Baden, dem badischen Staatsminister Dusch, dem Bundespräsidialgesandten Graf Colloredo, dem preußischen Gesandten Graf Dönhoff und dem Fürsten von Leiningen sowie eines Memorandums über Baden (1846) soll seine Politik im Vormärz verteidigen

Einleitungsgedicht : (Aus der Mappe 'Weltuntergang')

Uriel Birnbaum

Der Komet [Illustration] : (Aus der Mappe 'Weltuntergang')

Uriel Birnbaum

Ghetto [Illustration] : (Aus der Mappe "Ghettocorners")

Lionel Samson Reiss

Oberschlesische Motive : Vorrede zu einer Mappe mit Radierungen ..

Arnold Zweig