US 12,244,686 B2
Image sensor, image processing system having the same and operating method of the same
Sigyoung Koo, Hwaseong-si (KR); Buyong Um, Seongnam-si (KR); and Serin Kim, Hwaseong-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Aug. 9, 2022, as Appl. No. 17/883,917.
Claims priority of application No. 10-2021-0162168 (KR), filed on Nov. 23, 2021; application No. 10-2021-0170104 (KR), filed on Dec. 1, 2021; application No. 10-2022-0054062 (KR), filed on May 2, 2022; and application No. 10-2022-0054063 (KR), filed on May 2, 2022.
Prior Publication US 2023/0163943 A1, May 25, 2023
Int. Cl. G06F 21/75 (2013.01); G06F 21/64 (2013.01); H04L 9/00 (2022.01); H04L 9/06 (2006.01); H04L 9/08 (2006.01); H04L 9/32 (2006.01); H04N 7/025 (2006.01); H04N 23/60 (2023.01)
CPC H04L 9/003 (2013.01) [G06F 21/64 (2013.01); H04L 9/0618 (2013.01); H04L 9/0825 (2013.01); H04L 9/0869 (2013.01); H04L 9/32 (2013.01); H04N 7/025 (2013.01); H04N 23/665 (2023.01)] 19 Claims
OG exemplary drawing
 
1. An image sensor comprising:
an image sensing circuit configured to acquire image data; and
a security circuit configured to generate a tag for integrity of the image data,
wherein the security circuit includes:
a crypto circuitry configured to receive a cipher text that is encrypted with a public key from a controller, and decrypt the cipher text based on an encryption algorithm using a private key; and
a differential power analysis (DPA) countermeasure circuitry configured to perform DPA defense against an operation of the crypto circuitry using a random value corresponding to all or a portion of the cipher text.