METHOD AND DEVICE FOR PROVIDING A CRYPTOGRAPHIC KEY FOR A FIELD DEVICE

摘要

A security device and a method provide a cryptographic key for a field device. The security device is connected to at least one tamper sensor which is associated with the field device and which, when a physical manipulation carried out on the field device is detected, a manipulation message is emitted. The cryptographic key is only provided to the field device by the security device if the security device does not receive a manipulation message from the tamper sensors associated with the field device.