公开(公告)号：US20230063890A1

公开(公告)日：2023-03-02

申请号：US17459543

申请日：2021-08-27

Applicant: Micron Technology, Inc.

Inventor： Aaron Boehm ,  Jeremy Chritz ,  Tamara Schmitz ,  David Hulton ,  Max Vohra

IPC: G06F21/55 ,  G06F3/06

Abstract: Methods, systems, and devices for measuring change in a channel characteristic to detect a memory device attack are described. A system, such as a vehicle system, may include a host device coupled with a memory device. The host device may transmit a first signal to the memory device and may receive, from the memory device, a second signal as feedback based on the first signal. The host device may determine a channel characteristic, such as a channel impedance measurement, based on the second signal received from the memory device. If the determined channel characteristic fails to satisfy a threshold (e.g., if the measured channel impedance fails to satisfy a reference value within a tolerance range), the host device may detect a potential attack on the memory device and may take corrective action, such as disabling one or more features of the memory device.

公开(公告)号：US20230205430A1

公开(公告)日：2023-06-29

申请号：US17694355

申请日：2022-03-14

Applicant: Micron Technology, Inc.

Inventor： Aaron Boehm ,  Jeremy Chritz ,  David Hulton ,  Tamara Schmitz ,  Max Vohra

IPC: G06F3/06

CPC classification number: G06F3/0619 ,  G06F3/0659 ,  G06F3/0679

Abstract: Methods, systems, and devices for verification of a volatile memory, such as a dynamic random-access memory (DRAM), using a unique identifier (ID) are described. A memory device may store a unique ID for a DRAM component of the memory device in non-volatile memory (e.g., in the DRAM, external to the DRAM). A host device coupled with the memory device may store, to non-volatile memory at the host device, information for verifying the identity of the DRAM component, for example, based on the unique ID. The memory device and host device may perform a procedure for verification of the identity of the DRAM component using the unique ID of the DRAM and the verification information stored at the host device. If the host device detects that the DRAM has been replaced or modified based on the verification procedure, the host device may disable one or more features of the memory device.