Abstract: A method for producing a control device includes the following steps: generating, by the control device, a first asymmetric cryptographic key pair with a first private key and a first public key; transmitting the first public key to an external entity; generating, by the external entity, a second asymmetric cryptographic key pair with a second private key and a second public key; encrypting, by the external entity, the second private key using the first public key; transmitting the encrypted second private key from the external entity to the control device; and decrypting, by the control device, the encrypted second private key using the first private key.

Abstract: A method for the authentication on a device includes a step of providing a certificate, the certificate enabling a limited number N of authentication processes. The method further includes a step of carrying out an authentication process on the device, and a step of reducing the number N of authentication processes that are still possible for the certificate.

Abstract: In some aspects, a power supply system for a plasma application and/or an induction heating system includes at least two controllable power generators of different types. Each controllable power generator includes an associated identifier, and at least one operating unit for controlling at least one of the power generators, the operating unit includes an operating application to import the respective identifiers from the power generators that are connected to the operating application, and based on generator-specific configuration data that are stored for each power generator and the identifiers, the operating application constructs a graphic user interface on a display device of the operating unit.

Abstract: In some aspects, a power supply system for a plasma application and/or an induction heating system includes at least two controllable power generators of different types. Each controllable power generator includes an associated identifier, and at least one operating unit for controlling at least one of the power generators, the operating unit includes an operating application to import the respective identifiers from the power generators that are connected to the operating application, and based on generator-specific configuration data that are stored for each power generator and the identifiers, the operating application constructs a graphic user interface on a display device of the operating unit.