公开(公告)号：US20230153440A1

公开(公告)日：2023-05-18

申请号：US17983642

申请日：2022-11-09

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： YUNHO YOUM ,  MARTY KIM ,  SEUNGHO LEE ,  MYUNGSIK CHOI

IPC: G06F21/57

CPC classification number: G06F21/572 ,  G06F2221/034

Abstract: A device connected to a platform includes a security system having device-real-time-clock (RTC) data and main firmware communicating with the platform. The security system generates a device hash from the device RTC data and the main firmware hash, and the main firmware provides a response including the device hash to the platform.

公开(公告)号：US20230153252A1

公开(公告)日：2023-05-18

申请号：US17895303

申请日：2022-08-25

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： SOHYUN PARK ,  YUNHO YOUM ,  MYUNGSIK CHOI

IPC: G06F12/14 ,  G11C17/16 ,  G11C17/18

CPC classification number: G06F12/1466 ,  G11C17/16 ,  G11C17/18 ,  H03K19/20

Abstract: A semiconductor device includes a one-time programmable (OTP) memory device, a key register and a key protection control logic. The OTP memory device stores a secret value, a key protection bit indicating whether to protect the secret value, and an end of life bit indicating whether to discard the semiconductor device. The key register loads the secret value from the OTP memory device and stores the secret value. The key protection control logic controls loading of the secret value from the OTP memory device to the key register based on the key protection bit and the end of life bit. Security of the secret value is enhanced and utilization of the secret value is optimized using the key protection bit and the end of life bit.