公开(公告)号：US20250148093A1

公开(公告)日：2025-05-08

申请号：US18678216

申请日：2024-05-30

Applicant: Samsung Electronics Co., Ltd.

Inventor： Subin SEO ,  Jisoo KIM ,  Kyung-Woo NOH ,  Younsung CHU

IPC: G06F21/60

Abstract: Disclosed is a memory system which includes a non-volatile memory device, and a memory controller configured to control the non-volatile memory device. The memory controller includes a key index table including an extended key index associated with a logical address from a host device and an encryption/decryption key table including a replicated key index associated with the extended key index, and an encryption/decryption key associated with encryption or decryption of target data associated with the logical address. The memory controller is configured to change the replicated key index based on a key change request for the encryption/decryption key. Based on the encryption or the decryption being performed with respect to the target data, the memory controller is configured to compare the extended key index and the replicated key index to detect whether the encryption/decryption key associated with the encryption or the decryption is changed.