Abstract. An obfuscation O of a function F should satisfy two requirements: firstly, using O it should be possible to evaluate F; secondly, O should not reveal anything about F th...
This paper extends basic software-testing theory to software components and adds explicit state to the theory. The resulting theory e enough to abstractly model the construction o...
Abstract. This paper has two foci that are intended to be complementary. First, it describes Conzilla as an incarnation of a concept browser. More specifically, as a technical sol...
Abstract. Informatics is currently being taught in high schools all over the world. In the Netherlands, where all students are expected to become computer literate in the lower gra...
Abstract. A time-lock puzzle is a mechanism for sending messages “to the future”. The sender publishes a puzzle whose solution is the message to be sent, thus hiding it until e...