公开(公告)号：US12093394B2

公开(公告)日：2024-09-17

申请号：US18111808

申请日：2023-02-20

Applicant: XILINX, INC.

Inventor： Aman Gupta ,  James D. Wesselkamper ,  James Anderson ,  Nader Sharifi ,  Ahmad R. Ansari ,  Sagheer Ahmad ,  Brian C. Gaide

IPC: G06F21/57 ,  H04L9/06 ,  H04L9/08 ,  H04L9/14 ,  H04L9/30

CPC classification number: G06F21/575 ,  H04L9/0618 ,  H04L9/0822 ,  H04L9/0861 ,  H04L9/14 ,  H04L9/30 ,  G06F2221/034

Abstract: Some examples described herein provide for securely booting a heterogeneous integration circuitry apparatus. In an example, an apparatus (e.g., heterogeneous integration circuitry) includes a first portion and a second portion of one or more entropy sources on a first component and a second component, respectively. The apparatus also includes a key generation circuit communicatively coupled with the first portion and the second portion to generate a key encrypted key based on a first set of bits output by the first portion and a second set of bits output by the second portion. The apparatus also includes a key security circuit to generate, based on the key encrypted key and an encrypted public key stored at the apparatus, a plaintext public key to be used by a boot loader during a secure booting operation for the apparatus.