METHODS, APPARATUSES AND SOFTWARE FOR AUTHENTICATION OF DEVICES TEMPORARILY PROVIDED WITH A SIM TO STORE A CHALLENGE-RESPONSE

摘要

A process is provided in which a first device, e.g. a hub device (2) of a home network (1), is temporarily provided with a SIM (20) to store a challenge-response, and thereafter the first device (2) uses the stored challenge-response to interrogate a second device e.g. a mobile telephone (2), to authenticate that the second device (12) now has the SIM (20) that the first device (2) was previously provided with. A further process is provided in which the second device (12) authenticates that the first device (2) previously had access to the SIM (20) by verifying that a response from one or more challenge-response pairs provided by the first device (2) to the second device (12) is the same as a response received by the second device (12) from the SIM (20) when the second device (12) interrogates the SIM (20) with the challenge of the challenge-response pair received earlier from the first device (2).