US 12,314,574 B2
System, device, and method for writing data to protected region
Younsung Chu, Yongin-si (KR); Jisoo Kim, Seongnam-si (KR); Hyungsup Kim, Hwaseong-si (KR); Yongsuk Lee, Gunpo-si (KR); and Hyunsook Hong, Hwaseong-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Jul. 13, 2021, as Appl. No. 17/374,098.
Claims priority of application No. 10-2020-0176600 (KR), filed on Dec. 16, 2020.
Prior Publication US 2022/0187997 A1, Jun. 16, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 21/00 (2013.01); G06F 3/06 (2006.01); G06F 21/44 (2013.01); G06F 7/58 (2006.01)
CPC G06F 3/0622 (2013.01) [G06F 3/0655 (2013.01); G06F 3/0679 (2013.01); G06F 21/44 (2013.01); G06F 7/58 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of writing data to a protected region in response to a write request of a host, the method comprising:
transmitting a first response to the host, the first response including a first device message authentication code and a first device message;
receiving a first request from the host, the first request including a first host message authentication code and a first host message;
generating a first message verification code based on the first device message authentication code and the first host message;
verifying the first request based on the first host message authentication code and the first message verification code;
generating a second device message authentication code based on a second device message and the first message verification code, the second device message including a result of verifying the first request; and
transmitting a second response to the host, the second response including the second device message authentication code and the second device message.