US 12,368,570 B2
Apparatus and method with homomorphic encryption operation
Andrey Kim, Suwon-si (KR); Yongwoo Lee, Suwon-si (KR); Maksim Deriabin, Suwon-si (KR); Jieun Eom, Suwon-si (KR); and Rakyong Choi, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on May 11, 2023, as Appl. No. 18/316,062.
Claims priority of application No. 10-2022-0126564 (KR), filed on Oct. 4, 2022; and application No. 10-2022-0170614 (KR), filed on Dec. 8, 2022.
Prior Publication US 2024/0129106 A1, Apr. 18, 2024
Int. Cl. H04L 9/06 (2006.01); H04L 9/00 (2022.01); H04L 9/08 (2006.01); H04L 9/40 (2022.01)
CPC H04L 9/008 (2013.01) [H04L 9/0618 (2013.01)] 21 Claims
OG exemplary drawing
 
1. An apparatus with a homomorphic encryption operation, the apparatus comprising:
one or more processors configured to:
generate a modified vector by preprocessing vector components of an operand ciphertext of a blind rotation operation based on an order of a polynomial of an output ciphertext of the blind rotation operation and a modulus of the operand ciphertext; and
generate a homomorphic encryption operation result by performing the blind rotation operation based on a public key for performing the blind rotation operation and the modified vector.