US 12,755,060 B2 · Memory systems and devices including examples of generating access codes for memory regions using authentication logic

Abstract

Examples of systems and method described herein or generating, in a memory controller and/or memory device, access codes for memory regions of the memory device using authentication logic, and for accessing the memory device using the access codes. For example, a memory controller and/or a coupled memory device may generate access codes that a host computing device may include in a memory access request to access one or more memory regions of the memory device. Data read or written at the memory device may in some examples only be accessed in accordance with the access codes for memory regions of the memory device. Accordingly, the systems and methods described herein may provide security for specific memory regions of a memory device because the access code are updated periodically (e.g., based on obtained reset indication) or in accordance with an updated count value from a counter.

Claims15

Dependent claims

A method comprising:

obtaining, at a memory controller and from a host computing device, a memory access request associated with a memory device of a plurality of memory devices, the memory access request comprising a memory address of the memory device and an access code;
responsive to the memory access request:
comparing, at authentication logic of the memory controller, the access code as a part of the memory access request with a stored plurality of access codes in a cache of the memory controller;
responsive to matching the access code to one of the stored plurality of access codes:
authenticating a memory command including a physical memory address in a corresponding memory region associated with the matched access code;
and
performing a memory access operation associated with the memory access request;
and
generating, at the memory controller, the plurality of access codes, wherein each access code of the plurality of access codes corresponds to a respective memory region of a plurality of memory regions, based at least in part on a provisioned key, wherein the plurality of access codes are generated using the provisioned key and the memory address as an initialization vector for an authenticated stream cipher.

6 more elements

Dependencies are inferred from the claim text.

Memory systems and devices including examples of generating access codes for memory regions using authentication logic

Life of this patent

Memory systems and devices including examples of generating access codes for memory regions using authentication logic

Life of this patent

Abstract

Claims15