Device for processing data in a CAD system has a CAD system with access to CAD data describing a structural part existing beforehand and an authorization-checking device to allow access to CAD data only after proof of authority.

摘要

CAD data (14) has an encoding entry (16). After proof of authorization a decoding unit (10,22) decodes CAD data encoded by the encoding entry. The CAD data can only be copied/duplicated together with the encoding entry. Proof of authorization is given after comparing an authorization ID key (19) allocated to a CAD system with a reference ID key. An authorization-checking unit checks authorization to use the CAD system.