Patent ID: 8887309

Claim:
A method of enabling an information carrier for authentication by a particular device, the information carrier being electronic equipment having a non-volatile memory for storing signed authentication data, the information carrier comprising a writeable part and a physical token, the physical token being arranged to supply a response upon receiving a challenge through interaction between the physical token and the challenge, the method comprising acts of: applying a first challenge represented by challenge data to the physical token resulting in a first response, the physical token supplying the first response upon receiving the first challenge, and detecting the first response of the physical token resulting in a detected first response data, forming a first authentication data based on information derived from the detected first response data, forming the first authentication data further comprising generating a first helper data for use in a delta contracting function during authentication of the information carrier, signing the first authentication data using a secret device key of the particular device to configure the information carrier for exclusive use by the particular device, and writing the signed authentication data and the first helper data in the writeable part of the information carrier, wherein the information used in forming the first authentication data comprises both the challenge data as well as the information derived from the detected first response data.