Method and apparatus for providing a cryptographic security function for the operation of a device

An apparatus for providing a cryptographic security function for the operation of a device, having:

• means for receiving a request to provide the cryptographic security function,
• at least one interface to a trust anchor, the trust anchor making available the cryptographic security function,
• wherein said interface is configured to determine an item of context information depending on the application initiating the request, the item of context information comprising the identity of the application,
• wherein the item of context information is integrated into the provision of the cryptographic security function as a one-way function value,
• means for providing the cryptographic security function for the application initiating the request, wherein these means are configured to allow the determined item of context information to be integrated into the provision of the cryptographic security function, and
• wherein the item of context information at least one of modifies and influences a value resulting from the cryptographic security function.

A computer program having means for performing a method for providing a cryptographic security function when the computer program is executed on an apparatus said computer program having a non-transitory computer readable storage medium having instructions, which when executed by a processor, perform actions, wherein the method comprises:

• receiving a request to provide the cryptographic security function,
• providing an interface to a trust anchor, the trust anchor making available the cryptographic security function,
• wherein said interface determines an item of context information depending on the application initiating the request, the item of context information comprising the identity of the application initiating the request;
• wherein the item of context information is integrated into the provision of the cryptographic security function as a one-way function value, and
• providing the requested cryptographic security function for the application initiating the request,
• wherein the determined item of context information is integrated into the provision of the cryptographic security function, and
• wherein the item of context information at least one of modifies and influences a value resulting from the cryptographic security function.