A logic circuitry package includes a logic circuit and an interface to communicate with a host logic circuit. The logic circuit includes a memory arrangement storing an asymmetric key, and/or a certificate corresponding to the asymmetric key. The logic circuit is configured to transmit, to the host logic circuit, the certificate; receive, from the host logic circuit, a static signature request comprising challenge data; and/or, transmit, to the host logic circuit, a signature computed based on the challenge data and the asymmetric key in response to the static signature request.