Einrichtung zur Sicherung von Informationssystemen, die auf der Basis von Mikroprozessoren organisiert sind

摘要

The system has a programme development chain (1) that compiles a source programme to an executable programme and encodes it to a coded executable programme. The programme development chain (1) is similar to normal except for the addition of a stage to code the executable programme. A specialist microprocessor (2) for protected applications programmes (MALP) works with the development chain (1) and consists of an electronic chip on which are integrated a classic microprocessor (3) and a cryptographic module (4) which encodes outgoing addresses and data and decodes incoming data using an inverse algorithm to that used in the development chain (1).