Generating and executing encrypted program instructions by means of a digital control device

A method for operating a numerical control facility for controlling a manufacturing machine for manufacturing a workpiece, the method comprising:

• providing workplace data on the numerical control facility;
• providing CAM software on the numerical control facility;
• generating program instructions on the numerical control facility by the CAM software in accordance with workpiece data for manufacturing the workpiece by the manufacturing machine;
• encrypting the program instructions and saving of the encrypted program instructions in a non-volatile memory of the numerical control facility;
• reading out the encrypted program instructions from the non-volatile memory;
• decrypting the encrypted program instructions;
• and
• processing of the decrypted program instructions by the numerical control facility for controlling the manufacturing machine for manufacturing the workplace.

A manufacturing machine system, comprising:

• a manufacturing machine;
• and
• a numerical control facility configured to:
• provide workpiece data on the numerical control facility;
• provide CAM software on the numerical control facility;
• generate program instructions on the numerical control facility by the CAM software in accordance with workpiece data for manufacturing the workpiece by the manufacturing machine;
• encrypt the program instructions and save the encrypted program instructions in a non-volatile memory of the numerical control facility;
• read out the encrypted program instructions from the non-volatile memory;
• decrypt the encrypted program instructions;
• and
• process the decrypted program instructions for controlling the manufacturing machine for manufacturing the workpiece.