Integrated circuit and system for installing computer code thereon

An integrated circuit comprising:

• a communication circuit configured to provide technical information representing capabilities of the integrated circuit to a computing device external to the integrated circuit;
• a combiner configured to obtain a cryptographic challenge and combine the technical information with the cryptographic challenge, wherein the combiner concatenates the technical information and the challenge;
• a key storage comprising a cryptographic signing key;
• and
• a signer configured to produce a signature over the combined technical information and the cryptographic challenge using the cryptographic signing key and provide the signature to the external computing device;
• and
• an application receiver configured to receive, after the signature is provided to the external computing device, application computer code, install the received application computer code in a code memory of the integrated circuit to enable the integrated circuit with a new functionality, and receive application information from the external computing device, wherein the combiner is configured to combine a further challenge with the application information after the application computer code has been installed.