Bootstrap SIM Authentication for IoT Cellular Onboarding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
IoT devices face difficulties in authentication and onboarding due to the proliferation of resellers and wholesale distributors, leading to challenges in maintaining accurate OTP databases and introducing security issues when sharing keys between devices and cellular networks.
Innovation Solution
The implementation of a bootstrap SIM that includes pre-programmed credentials and a default PKI certificate, allowing IoT devices to communicate directly with a bootstrap server for authentication and registration, reducing reliance on network-provided information and enhancing security through mutual authentication and encryption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional SIM authentication methods are used with OTP databases, then device authentication can be performed, but maintaining accurate OTP databases becomes difficult due to proliferation of resellers and wholesale distributors
Solution Approach 1:
The patent extracts the authentication credentials from the network-controlled OTP database and embeds them directly in the SIM card during manufacturing. This removes the need for complex database management across multiple resellers and distributors, as each SIM carries its own authentication credentials independently.
Solution Approach 2:
The authentication credentials are pre-programmed into the SIM card during the manufacturing process, before the device reaches the end user. This preliminary action eliminates the need for subsequent database lookups and OTP generation during device activation, simplifying the authentication flow.
2Reliability
If keys are shared between device and cellular network during authentication, then authentication can be performed, but security issues are introduced
Solution Approach 1:
The patent introduces a bootstrap server as an intermediary that facilitates authentication without requiring direct key sharing between the device and cellular network. The bootstrap server mediates the authentication process using credentials already embedded in the SIM, eliminating the security risks associated with key transmission.
Solution Approach 2:
Security credentials including default PKI certificates are pre-configured in the SIM card before deployment. This preliminary security setup enables secure communication channels to be established immediately upon device activation, without requiring vulnerable key exchange protocols during the authentication process.
3Reliability
If devices rely on network-provided authentication information, then authentication can be performed, but device movement between networks becomes difficult
Solution Approach 1:
The SIM card is designed with universal credentials including default PKI certificates that can be used for authentication across multiple cellular networks. This multi-functionality enables devices to maintain authentication capabilities when moving between different networks, as the SIM contains the necessary credentials independently of any single network's OTP database.
Data Source
AI summary
Systems and methods for using a bootstrap Subscriber Identity Module (SIM) to bootstrap an Internet-of-Things (IoT) device on a cellular network. The IoT device uses bootstrap information stored on the bootstrap SIM to authenticate the IoT device with the cellular network. The cellular network receives the bootstrap information and uses a certificate repository to check the bootstrap information against. Upon successful authentication, the IoT device is provided with credentials to register the IoT device on the cellular network.