US 12,475,061 B2
System-on-chip capable of changing signature verification algorithm and operating method of system-on-chip
Keunyoung Park, Suwon-si (KR); and Dongjin Park, Suwon-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Jan. 23, 2024, as Appl. No. 18/420,212.
Claims priority of application No. 10-2023-0076031 (KR), filed on Jun. 14, 2023.
Prior Publication US 2024/0419608 A1, Dec. 19, 2024
Int. Cl. G06F 21/00 (2013.01); G06F 12/14 (2006.01); H04L 9/32 (2006.01)
CPC G06F 12/1408 (2013.01) [H04L 9/3247 (2013.01); G06F 2212/1052 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system-on-chip comprising:
a nonvolatile memory configured to load a first image received from external storage and a first signature verification algorithm;
at least one processor configured to control the nonvolatile memory such that first verifications are performed on the first image;
a volatile memory, wherein the first image is loaded to the volatile memory by the at least one processor; and
a one-time programmable (OTP) memory configured to program a hash value of a second signature verification algorithm different from the first signature verification algorithm,
wherein, in initialization, based on version information about the second signature verification algorithm being further programmed in the OTP memory, the at least one processor is further configured to:
load a second image received from the external storage to the volatile memory, the second image being different from the first image;
perform a second verification on the second image based on the programmed hash value;
based on the second verification succeeding, execute the second signature verification algorithm corresponding to the version information; and
perform the first verifications by applying the second signature verification algorithm to the first image.