Optical IoT Authentication Labels for Unpowered Device Security
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Solution Overview
Problem
Existing IoT devices, particularly those that are unpowered or non-electronic, face challenges in securing communication and data transmission due to the lack of cryptographic security measures, which are typically reliant on electronic components.
Innovation Solution
A system and method for cryptographically securing unpowered IoT devices using a secure key store or subscriber identity module (SIM) to manage encryption keys, along with a wakeup receiver and transmitter for energy-efficient communication, enabling secure pairing and data exchange without continuous power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cryptographic security measures are implemented in IoT devices, then security is improved, but power consumption increases
Solution Approach 1:
The patent implements preliminary action by pre-provisioning cryptographic credentials (certificates and keys) in the unpowered device during manufacturing. The credentials are stored in a secure element or SIM card, allowing the device to perform cryptographic operations only when activated by a trusted entity, thus maintaining security while avoiding continuous power consumption.
Solution Approach 2:
The patent applies periodic action by enabling cryptographic operations only during brief activation periods when the unpowered device needs to communicate with trusted entities. The device remains in a low-power state between activations, performing security functions only when necessary rather than continuously.
2Reliability
If electronic components are added to unpowered IoT devices for security, then cryptographic capability is improved, but device complexity increases
Solution Approach 1:
The patent extracts the cryptographic security functions from the main device architecture by utilizing a separate SIM card or secure element. This modular approach allows unpowered devices to gain cryptographic capability without integrating complex electronic security components into the device itself, thus improving security while maintaining simplicity.
Solution Approach 2:
The patent applies universality by using a SIM card or secure element that can serve multiple purposes: storing cryptographic credentials, performing authentication, and enabling secure communication. This multi-functional component provides cryptographic capability across different unpowered device types without requiring device-specific security implementations.
3Reliability
If continuous power is supplied to IoT devices for security operations, then security performance is improved, but operational lifespan decreases
Solution Approach 1:
The patent implements periodic action by enabling the unpowered device to perform security operations only during brief activation periods when communication with trusted entities is required. Between activations, the device remains in a true unpowered state, dramatically extending operational lifespan while maintaining security performance when needed.
Solution Approach 2:
The patent applies self-service by enabling the unpowered device to autonomously perform cryptographic operations using pre-provisioned credentials when activated. The device does not require continuous external power or control for security functions, only brief activation periods, thus extending operational lifespan while maintaining security autonomy.
Data Source
AI summary
A system and method for cryptographically securing a product. For example, one embodiment of a method comprises: generating a first signature over a key to add an authenticator device to a chain of trust; generating a universal unique identifier (UUID) code; generating a second signature over the UUID code and metadata associated with the authenticator device using the key; and encoding the UUID code, metadata, and signature in an optical label of a product.