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Device with chain of trust

An electronic device, entity technology, applied in the direction of security communication devices, computer security devices, instruments, etc., can solve problems such as loss

Pending Publication Date: 2022-03-01
MICRON TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Volatile memory devices such as DRAM may lose their stored state when disconnected from an external power source

Method used

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  • Device with chain of trust
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  • Device with chain of trust

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] When the device is powered on, the device can start up according to the boot sequence. Performing the boot sequence may involve booting hardware and / or initializing one or more of the device's firmware and software. At least some of the initialized code (eg, code corresponding to the basic input / output system (BIOS), boot loader, or operating system) may be authenticated prior to initialization. This authentication can take place to ensure that the code has not been tampered with before the device has been powered on.

[0017] In some instances, the code itself may contain instructions for performing authentication on additional code loaded by the code. However, in some instances, portions of the code corresponding to performing this authentication process can be tampered with by unauthorized users. Additionally, as part of authenticating the extra code, the code may contain instructions for checking the signature of the extra code. The different entities initiated a...

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PUM

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Abstract

The invention relates to an apparatus with a chain of trust. Methods, systems, and devices are described to enable a device having a chain of trust. As part of a launcher of a system containing a root-of-trust entity, a controller may authenticate the root-of-trust entity. The root of trust entity may receive, as part of the launcher, a first code portion associated with a first entity of the system. The controller may generate a first measurement of the first code portion and may identify, by the root of trust entity, a second measurement associated with the first code portion. The controller may determine, by the root-of-trust entity, whether the first measurement matches the second measurement as part of authenticating the first code portion, and may transmit, by the root-of-trust entity, an indication of whether the first measurement and the second measurement match.

Description

[0001] cross reference [0002] This patent application claims priority to U.S. Patent Application No. 17 / 006,182, filed August 28, 2020, by Liu, entitled "ADEVICE WITH CHAIN ​​OF TRUST," said U.S. The patent application is assigned to the present assignee and is expressly incorporated herein by reference in its entirety. technical field [0003] The technical field relates to a device with a chain of trust. Background technique [0004] The following generally relates to one or more systems for memory, and more specifically, to an apparatus with a chain of trust. [0005] Memory devices are widely used to store information in various electronic devices such as computers, wireless communication devices, cameras, digital displays, and the like. Information is stored by programming memory cells within a memory device to different states. For example, a binary memory cell can be programmed to one of two supported states, often designated by a logic 1 or a logic 0. In some ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/32
CPCH04L9/3236H04L9/3234G06F21/44G06F21/575G06F21/572G06F21/64H04L9/0643G06F2221/034H04L9/3073
Inventor 刘湛
Owner MICRON TECH INC