公开(公告)号：US11886624B2

公开(公告)日：2024-01-30

申请号：US17473137

申请日：2021-09-13

Applicant: Samsung Electronics Co., Ltd.

Inventor： Ingoo Heo ,  Youngwook Noh

IPC: G06F21/79 ,  G09C1/00 ,  H04L9/06 ,  G06F21/72 ,  G06F21/60 ,  H04L9/08 ,  G06F13/40 ,  G06F13/16

CPC classification number: G06F21/79 ,  G06F13/40 ,  G06F21/602 ,  G06F21/72 ,  G09C1/00 ,  H04L9/065 ,  H04L9/0631 ,  H04L9/0637 ,  H04L9/0869 ,  G06F13/1668 ,  H04L2209/122

Abstract: A writing method of a crypto device includes receiving a write request from a central processing unit, determining a write attribute of the write request, and performing one of a partial write operation and a full write operation according to the write attribute. In the full write operation, a random number for a version count is generated, a key stream is generated using the version count, the key stream and write data are encrypted in a first logical operation, and the encrypted data and the version count are stored in a memory device.