DISTRIBUTED AND HIERARCHICAL DEVICE ACTIVATION MECHANISMS

摘要

Embodiments of systems and methods disclosed herein include a distributed device activation mechanism involving a group of external entities without using asymmetric cryptography. Systems and methods include techniques for deriving a device secret using a hardware secret and authenticated unique input data provided to the device by one or more external entities. A hardware hash function uses the hardware secret as a key and the authenticated unique input data as input data to output the derived device secret. The derived device secret is written to a security register of the device to enter a new security layer.

主权项

1. A method for performing remote authentication and activation of a device involving a group of external entities without using asymmetric cryptography comprising:
providing a hardware secret; providing unique input data, the unique input data including authenticated data from one or more of the external entities; using a hardware hash function to derive a shared secret from the hardware secret and the unique input data, wherein the shared secret is unknown to each of the external entities; and writing the derived shared secret to a security register of the device.