Management Controller TLS Handshake for Secure Endpoint Trust
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Solution Overview
Problem
Existing endpoint devices face challenges in securely establishing trust and maintaining secure connections due to potential compromise of hardware components, which can lead to unauthorized access and compromise of sensitive information.
Innovation Solution
Implementing a management controller that generates and stores a private key independently of hardware resources, using an out-of-band communication channel to establish secure connections and maintain trust, while keeping the private key secure from hardware components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hardware components are used to establish secure connections, then communication functionality is enabled, but security is compromised due to potential hardware compromise
Solution Approach 1:
The system divides the endpoint device into two independent segments: hardware resources (processor, memory, storage) and a management controller. The management controller operates independently with its own processing capabilities and securely stores the private key, separating security-critical functions from the main hardware resources that may be compromised.
Solution Approach 2:
The management controller acts as an intermediary between the hardware resources and external entities for security-critical operations. It mediates TLS handshakes, certificate verification, and private key protection, preventing direct exposure of security credentials to potentially compromised hardware components.
2Ease of operation
If private key is stored in hardware resources, then access is simplified, but security is reduced due to potential unauthorized access
Solution Approach 1:
The private key is extracted from the main hardware resources and stored exclusively in the management controller's secure storage. This extraction isolates the private key from potential compromises in the processor, memory, or storage devices, while the management controller provides dedicated key management capabilities.
3Adaptability or versatility
If hardware components manage security functions, then device functionality is integrated, but trust establishment is compromised
Solution Approach 1:
The system segments security functions from general hardware functions. The management controller handles all security-critical operations including TLS handshakes, certificate management, and private key protection, while hardware resources focus on data processing and application execution.
Solution Approach 2:
The management controller serves as an intermediary that establishes trust between the endpoint device and external entities. It independently verifies certificates, performs cryptographic operations, and validates security credentials without relying on potentially compromised hardware components.
Data Source
AI summary
Methods and systems for managing an endpoint device are disclosed. To do so, a key pair may be generated by a management controller of the endpoint device and a private key of the key pair may be kept secret by the management controller. A public key of the public private key pair may be provided to a first entity for use in generating a certificate for the endpoint device. The certificate may be provided to a second entity desiring a level of trust with the endpoint device. As a portion of establishing a secure connection between the second entity and the endpoint device, a TLS handshake may be performed. Performing the TLS handshake may include obtaining a TLS packet, signing the TLS packet using the private key, and providing the signed TLS packet to the second entity to demonstrate that the endpoint device is trustworthy for the level of trust.