IoT Security Descriptor Generation for Low-Complexity Authentication
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Solution Overview
Problem
The deployment of IoT devices requires complex and costly processes for authentication, especially when multiple devices are involved, as manufacturers need to input device-specific information, leading to deployment delays and increased costs.
Innovation Solution
An end device is equipped with a memory device injected with a unique device-specific secret, and a firmware security descriptor (FSD) generator uses publicly-available data such as time, location, and other information to create a security descriptor for authentication, eliminating the need for direct user input and simplifying the authentication process for multiple devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If device-specific information is manually input for each IoT device during authentication, then authentication security is maintained, but deployment complexity and costs increase
Solution Approach 1:
The system enables self-service authentication by having each IoT device automatically generate its own device alias key using its unique device secret and the FSD. The device independently computes authentication credentials without requiring manual configuration or user input, thus maintaining security while eliminating deployment complexity
Solution Approach 2:
The device secret is pre-injected into each IoT device during manufacturing, and the FSD is generated in advance based on publicly available information. These preliminary actions prepare the authentication credentials before deployment, eliminating the need for manual device-specific information input during authentication
2Reliability
If device-specific information is manually input for each IoT device during authentication, then device identity verification is ensured, but deployment time increases
Solution Approach 1:
The device secret is pre-injected during manufacturing and the FSD is generated in advance using publicly available information such as device identifiers and timestamps. This preliminary preparation of authentication credentials eliminates time-consuming manual information input during deployment
Solution Approach 2:
Each IoT device autonomously generates its device alias key and authentication credentials using its pre-injected secret and the FSD, without requiring manual configuration. This self-service mechanism ensures device identity verification while dramatically reducing deployment time
3Adaptability or versatility
If user-provided device-specific information is required for authentication, then customization flexibility is maintained, but costs increase
Solution Approach 1:
The system eliminates the need for user-provided device-specific information by having each device automatically generate its authentication credentials using its pre-injected device secret and the FSD. This self-service approach removes customization overhead while maintaining security, thereby reducing deployment costs
Solution Approach 2:
The FSD generator creates a universal authentication mechanism that works across all IoT devices using publicly available information and pre-injected secrets. This universal approach eliminates the need for custom device-specific information collection, reducing deployment costs while maintaining adaptability through the cryptographic key generation process
Data Source
AI summary
Methods, systems, and devices for security descriptor generation are described. An end device may be authenticated based on a certificate and a device key based on a security descriptor. The security descriptor may be generated based on publicly-available information such as time of day information, geographical information, or a default set of information. The security descriptor may be used for generation of a certificate accessible by a server used for authenticating the device and also may be used by an end device to generate a device key for verification by the server authenticating the device.