BMC Peripheral Device Authentication Mechanism

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Solution Overview

Problem

Existing technologies lack effective methods to authenticate peripheral devices before allowing them access to host systems, which can lead to potential malicious actions such as injecting code or executing malware.

Innovation Solution

A method involving a Baseboard Management Controller (BMC) that detects the presence of a peripheral device, receives authentication credentials, verifies the device's authenticity, and only then allows the opening of a peripheral communication channel.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If traditional protocols are used to allow peripheral device access to host systems, then ease of operation is improved, but security is worsened due to potential malicious actions

Engineering Contradiction:

Improveperipheral device accessVSAvoidmalicious actions

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The BMC performs authentication of the peripheral device before allowing access to the host system. The authentication credentials are verified in advance, and only after successful authentication is the peripheral device granted access to communicate with host components. This preliminary security check prevents malicious devices from infiltrating the system while still allowing legitimate devices to operate normally.

Inventive Principle:

Principle #10Preliminary action

2Object-affected harmful factors

If authentication protocols are implemented for peripheral devices, then security is improved, but device complexity is worsened

Engineering Contradiction:

Improvemalicious actions preventionVSAvoidauthentication system

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The BMC acts as an intermediary component between the peripheral device and the host system. It handles all authentication operations, credential verification, and access control decisions. This intermediary approach centralizes the security functionality in a dedicated component, avoiding the need to distribute complex authentication logic across multiple system components, thereby managing complexity while maintaining strong security.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Object-affected harmful factors

If peripheral devices are quarantined until authentication, then security is improved, but productivity is worsened due to access delays

Engineering Contradiction:

Improvemalicious actions blockingVSAvoiddevice access time

Core Design Contradiction:

Object-affected harmful factorsVSProductivity

Solution Approach 1:

The authentication process is initiated immediately when the peripheral device is detected, during the device initialization phase. This preliminary action allows the authentication to proceed in parallel with other system startup activities, minimizing the impact on overall system productivity. Legitimate devices are authenticated quickly and granted access without significant delays.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12314371B2Systems and methods for peripheral device security

Publication Date: 2025.05.27 EMC IP HLDG CO LLC

AI summary

A method for authenticating a peripheral device, that includes detecting, by a baseboard management controller (BMC), a presence of the peripheral device, receiving authentication credentials from the peripheral device, making a determination, based on the authentication credentials, that the peripheral device is authentic, and sending, in response to the determination, a command to open a peripheral communication channel with the peripheral device.