Abstract: A hardware crypto module encrypts or decrypts data from a device, the device being arranged to be remote and separate from the crypto module in terms of hardware. The crypto module includes an interface for communicating with the remotely arranged device, a memory, and a crypto processor. The crypto processor is configured to encrypt or decrypt, while using a first key, data received via the interface, to encrypt the first key while using a second key stored in the memory, and to output the first key via the interface exclusively in an encrypted form.