公开(公告)号：US12132832B2

公开(公告)日：2024-10-29

申请号：US17136775

申请日：2020-12-29

Applicant: Micron Technology, Inc.

Inventor： Giuseppe Cariello ,  Gaspare Giglio ,  Patrick Miesen ,  Jonathan Scott Parry

IPC: H04L9/08 ,  G06F12/14

CPC classification number: H04L9/0891 ,  G06F12/14 ,  G06F2212/1052

Abstract: Secure methods are described for modifying, erasing, or updating security keys for protected regions of a memory device by using a special firmware object (a key-modification firmware) loaded to the memory device that contains instructions to reprogram, modify, and/or erase the keys. To ensure that this key-modification firmware does not become a security risk, the key-modification firmware object may be protected from subsequent usage in a variety of ways.