Method for securing control unit i.e. field programmable gate array, of e.g. secure digital memory card, involves de-energizing function of control unit as function of cryptographic result data computed based on cryptographic key

摘要

The method involves receiving (101) a bit string for activating a function of a control unit i.e. field programmable gate array, and generating (102) a cryptographic key as a function of a number of apparatus specific safety parameters. Cryptographic result data is computed (103) based on the received bit string and the generated cryptographic key. The function of the control unit is de-energized (104) as a function of the computed result data, where the safety parameters comprise authentication unit identification, circuit board identification and/or application identification. Independent claims are also included for the following: (1) a computer program product for performing a method for securing a control unit of an apparatus (2) a device for securing a control unit of an apparatus (3) an apparatus comprising a control unit.