公开(公告)号：US20240184890A1

公开(公告)日：2024-06-06

申请号：US18239607

申请日：2023-08-29

Applicant: Cisco Technology, Inc.

Inventor： Sachin Agarwal ,  Srirajkumar Sundararaman ,  Aviran Kadosh ,  Samir Valjibhai Rajgor ,  Chirag Shroff ,  Kevin Shyh-Kang Chang ,  Dylan Walker

IPC: G06F21/57 ,  G06F21/44

CPC classification number: G06F21/575 ,  G06F21/44

Abstract: A method of operating a system-on-chip (SOC) including decrypting, by isolated Root of Trust (RoT) code, a Stock Keeping Unit (SKU) license code from a host during bootup of a device. Then validating, by the isolated RoT code, the SKU license code with firmware and at least one built-in key of a plurality of built-in keys from secure storage. Finally, enabling or disabling, by the isolated RoT code, at least one feature set of a plurality of feature sets comprising resources configured at the SOC based on at least one SKU license code which has been decrypted by isolated RoT code using at least one built-in key and authenticated by firmware.