Accelerator Card Security Mode Configuration via Satellite Controller
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Solution Overview
Problem
Existing accelerator cards lack an efficient method to automatically detect and configure their security modes based on the Root of Trust of the host computer, leading to potential security protocol misalignment and reduced flexibility in supporting different computing environments.
Innovation Solution
An accelerator card is equipped with a satellite controller that reads a security identifier from a read-only memory upon reset, allowing it to select and implement a security mode from a plurality of modes, such as in-band or out-of-band security modes, thereby aligning with the host computer's Root of Trust and enabling secure protocol execution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If accelerator cards use fixed security mode configuration, then device complexity is reduced, but adaptability to different host computer Root of Trust frameworks deteriorates
Solution Approach 1:
The accelerator card performs preliminary action by automatically detecting the host computer's Root of Trust framework during initialization and pre-configuring the appropriate security mode before operation begins. This eliminates the need for manual configuration while ensuring adaptability to different frameworks such as in-band or out-of-band security models.
Solution Approach 2:
The accelerator card implements self-service by autonomously detecting the host's Root of Trust framework and selecting the appropriate security mode without external intervention. The card self-configures its security parameters based on the detected framework, reducing device complexity while maintaining high adaptability.
2Adaptability or versatility
If accelerator cards support multiple security modes manually, then adaptability improves, but ease of operation deteriorates
Solution Approach 1:
The accelerator card performs self-service by automatically detecting the host's Root of Trust framework and autonomously selecting the appropriate security mode. This eliminates manual configuration operations while maintaining support for multiple security modes, thereby improving ease of operation without sacrificing adaptability.
Solution Approach 2:
The system performs preliminary detection and configuration of the security mode during initialization, so that by the time the accelerator card becomes operational, the correct security settings are already in place. This preliminary action removes the operational burden from the user while preserving multi-mode capability.
3Manufacturing precision
If accelerator cards require physical hardware variations for different security modes, then manufacturing precision is maintained, but device complexity increases
Solution Approach 1:
Instead of using different physical hardware for different security modes, the invention changes operational parameters by configuring the accelerator card to support multiple security modes through software/firmware settings. This maintains manufacturing precision with a single standardized hardware design while avoiding the complexity of multiple hardware variants.
Solution Approach 2:
The accelerator card implements universality by designing a single hardware platform that can function in multiple security modes (e.g., in-band and out-of-band) through configurable parameters. This eliminates the need for separate hardware variants for different security requirements, reducing device complexity while maintaining manufacturing precision.
Data Source
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AI summary
An accelerator card can include a read-only memory configured to store a security identifier in a designated field therein and a satellite controller configured to read the security identifier in response to a reset event. The satellite controller is configured to select, based on the security identifier, a security mode from a plurality of security modes and implement the selected security mode in the accelerator card.