公开(公告)号：US20210240833A1

公开(公告)日：2021-08-05

申请号：US17000748

申请日：2020-08-24

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ki Seok BAE ,  Jong Hoon Shin ,  Ki Tak Kim ,  Hye Soo Lee ,  Jin Su Hyun ,  Hyo Sun Hwang

IPC: G06F21/57 ,  H04L9/08 ,  H04L9/32

Abstract: Provided is a security device, an electronic device, a secure boot management system, a method for generating a boot image and a method for executing a boot chain. The security device includes a key deriver configured to receive a root key and a protected boot key included in a boot image and generate a derived key according to a key protection method using the root key and the protected boot key, a key processor configured to perform verification according to the key protection method using the generated derived key to extract a boot key from the protected boot key included in the boot image, a secure booter configured to perform verification on a protected execution image included in the boot image using the extracted boot key, and a processor configured to execute a verified execution image on which the verification has been completed by the secure booter.