Combined radio frequency identification (RFID)-based asset management and component authentication

1. An apparatus comprising:

a plurality of components to be authenticated;

a memory configured to store inventory data;

a plurality of root-of-trust (RoT) integrated circuits (ICs), each mechanically coupled to a corresponding one of the plurality of components, and each configured to generate authentication data based on a unique key generated for authenticating the corresponding component;

a wired communication bus; and

a radio frequency identification (RFID) relay tag connected to each of the RoT ICs via the wired communication bus, wherein the RFID relay tag is configured to communicate with each of the RoT ICs via the wired communication bus and pass the authentication data of each of the plurality of RoT ICs and the inventory data to an RFID reader via a radio frequency signal to facilitate authentication of the plurality of components and inventory management.

2. The apparatus of claim 1 , wherein the communication bus is an inter-integrated circuit (I 2 C) bus.

3. The apparatus of claim 1 , wherein the RFID relay tag is configured to receive an inventory and authentication request from the RFID reader and communicate an authentication query based on the inventory and authentication query to one or more of the RoT ICs via the wired communication bus.

4. The apparatus of claim 3 , wherein the RFID relay tag is configured to obtain the inventory data from the memory in response to receiving the inventory and authentication request from the RFID reader.

5. The apparatus of claim 1 , wherein each of the components is packaged in an integrated circuit package with a corresponding one of the RoT ICs.

6. The apparatus of claim 5 , wherein at least one of the integrated circuit packages includes a connection between the wired communication bus and the corresponding RoT IC.

7. The apparatus of claim 1 , wherein the unique key is a cryptographic key that has previously been shared with an asset management/component authentication server.

8. The apparatus of claim 1 , wherein each of the RoT ICs includes a first key source and a second key source that are combinable to form the unique key.

9. The apparatus of claim 8 , wherein the first key source is a physically uncloneable function and the second key source is a one-time programmable memory.

10. The apparatus of claim 1 , wherein a first one of the plurality of RoT ICs includes a radio frequency interface for direct wireless authentication of the RoT IC and corresponding component prior to assembly of the RoT IC in an electronic package.

11. The apparatus of claim 1 , wherein each of the root-of-trust integrated circuits is configured to store a unique identifier.

12. A method comprising:

receiving by a radio frequency identification (RFID) relay tag of an electronic device a request to an RFID reader for component authentication and electronic device management data, wherein a component of the electronic device is packaged with a root-of-trust (RoT) integrated circuit (IC) that is connected to the RFID relay tag via a wired communication bus;

receiving by the RFID relay tag from the RFID reader via a first RF signal an encrypted challenge for the RoT IC;

providing by the RFID relay tag via the wired communication bus the encrypted challenge to the RoT IC;

receiving by the RFID relay tag from the RoT IC via the wired communication bus an encrypted response generated by the RoT IC;

providing the encrypted response via a second RF signal to the RFID reader for authentication; and

providing electronic device management data to the RFID reader for electronic device management.

13. The method of claim 12 , further comprising decrypting the encrypted challenge with a cryptographic key stored on the RoT IC.

14. The method of claim 13 , further comprising generating the cryptographic key from first and second keys from first and second key sources.

15. The method of claim 14 , wherein the first key source is a physically uncloneable function and the second key source is a one-time programmable memory.

16. The method of claim 13 , further comprising providing the cryptographic key to an asset management/component authentication server prior to receiving the encrypted challenge.

17. The method of claim 12 , wherein the component is packaged in an integrated circuit package with the RoT IC.

18. The method of claim 12 , further comprising providing via RF to the RFID reader a unique identifier for the RoT IC.

19. The method of claim 18 , further comprising obtaining the unique identifier for a corresponding RoT IC in response to the request from an RFID reader for authentication data and inventory data.

20. The method of claim 12 , further comprising authenticating the RoT IC via an RF interface of the RoT IC prior to assembly of the RoT IC in an electronic package.

21. A method comprising:

storing inventory data of a plurality of components, each component mechanically coupled to a corresponding root-of-trust (RoT) integrated circuit (IC) in a plurality of RoT ICs;

receiving authentication data over a wired communication bus from the plurality of RoT ICs, the authentication data based on unique keys associated with the plurality of RoT ICs and generated for authenticating the plurality of components associated with the plurality of RoT ICs; and

wirelessly relaying the inventory data and the authentication data from each of the plurality of RoT ICs to a radio frequency identification (RFID) reader via a radio signal to facilitate authentication of the plurality of components and inventory management.