Fremgangsmate for a beskytte en programvare, ved anvendelse av et sakalt omnavnings-prinsipp, mot uautorisert bruk av den

摘要

Method involves definition of: a collection of dependent functions that are able to be executed by the software executing data processing unit; a collection of triggering commands that are capable of activating the dependent functions; an instruction for each triggering command; a method for renaming the instructions; and re-establishment means for implementation in the unit during a utilization phase allowing a dependent function that is to be executed to be found from the re-named instruction. The invention also relates to a corresponding system, data processing unit and assembly for distribution of protected software.