Management Controller Time Synchronization via Out-of-Band Trusted Timing
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Solution Overview
Problem
Existing time synchronization processes in data processing systems are vulnerable to compromise via man-in-the-middle attacks due to the use of in-band communication channels, which can lead to the manipulation of true time values and compromise the integrity of computer-implemented services.
Innovation Solution
Implementing a management controller using an out-of-band communication channel to obtain true time values from a trusted time server, separate from the hardware resources, thereby bypassing in-band components and maintaining separate power domains to ensure the integrity and availability of time synchronization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If in-band communication channels are used for time synchronization, then the time synchronization process is integrated with the data processing system, but the system becomes vulnerable to man-in-the-middle attacks and compromise of true time values
Solution Approach 1:
The system separates the time synchronization function into an independent management controller that operates outside the main data processing system. The management controller uses out-of-band communication channels to obtain true time values from trusted time servers, isolating the critical time synchronization process from the vulnerable in-band communication paths used by hardware resources.
Solution Approach 2:
A management controller acts as an intermediary between the hardware resources and the trusted time servers. This intermediary obtains true time values through secure out-of-band communication channels and provides them to hardware resources, preventing direct exposure to man-in-the-middle attacks on the primary communication channels.
2Reliability
If a management controller is introduced for out-of-band time synchronization, then security and reliability are improved, but the device complexity increases
Solution Approach 1:
The management controller is designed to perform multiple functions including time synchronization, system management, and monitoring tasks. By consolidating these management functions into a single controller that operates independently, the system achieves enhanced security without proportionally increasing overall complexity, as the management controller replaces or supplements existing management capabilities.
Data Source
AI summary
Methods and systems for managing a data processing system are disclosed. To manage the data processing system, a management controller may be included in the data processing system. The management controller may participate in time synchronization for the data processing system. To do so, the management controller may obtain true time values from a trusted time server via an interaction using an out of band communication channel. The true time values may be used to update any number of clocks hosted by the management controller and/or hardware resources of the data processing system. Therefore, software applications may utilize reliable time data to perform computer-implemented services. Doing so may decrease a likelihood of compromise of the data processing system and/or true time values used by the data processing system to perform the computer-implemented services.