Device and method for protecting a security module from manipulation attempts in a field device

摘要

The invention relates to a device for protecting a security module (7) from manipulation attempts in a field device (10), comprising a control device (1) which is configured to control said field device (10), a security module (7) which is configured to provide cryptographic key data which is to be used by the control device (1), and an interface device (6) which is connected to the control device (1) and the security module (7) and which is configured to allow the control device (1) access to the cryptographic key data in the security module (7) and to prevent access to the cryptographic key data in the event of a manipulation attempt on the field device (10).