IoT Camera Video Encryption with Mobile Relay Security
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Solution Overview
Problem
Existing IoT systems face challenges in efficiently managing and securing data transmission and device management across a wide area, particularly with low-power devices that are out of range from the central hub, and lack robust security measures for camera systems.
Innovation Solution
A system and method for IoT camera security that includes a centralized IoT service, a hub, and devices with low-power microcontrollers, utilizing Bluetooth LE for short-range communication, and a mobile device intermediary for out-of-range data transfer, along with secure key management and encryption protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If devices are deployed across a wide area, then coverage area is improved, but communication range limitation causes data transmission failures
Solution Approach 1:
The patent introduces mobile devices as intermediary nodes that relay data between stationary IoT devices and the central hub. When a stationary device is out of range, its data is transferred to a mobile device within range, which then forwards it to the hub, ensuring continuous communication across wide areas without direct hub-device connection requirements
2Use of energy by moving object
If low-power microcontrollers are used, then energy consumption is reduced, but processing capability is limited
Solution Approach 1:
The patent extracts complex processing tasks from the low-power microcontroller and relocates them to the mobile device or cloud hub. The microcontroller only performs simple sensor data collection and wireless transmission, while the mobile device handles data processing, filtering, and hub communication, allowing the microcontroller to remain simple and energy-efficient
3Area of stationary object
If data is transmitted over long distances, then device coverage is improved, but transmission power requirements increase
Solution Approach 1:
The patent segments the long-distance transmission path into multiple short hops through intermediary mobile devices. Instead of one device transmitting directly across a large area consuming high power, each mobile device transmits only short distances to the next hop, collectively covering the same area with much lower individual transmission power requirements
4Reliability
If security measures are enhanced, then data protection is improved, but system complexity increases
Solution Approach 1:
The patent uses mobile devices as security intermediaries that perform authentication and encryption operations. The mobile device verifies device credentials and manages secure data transmission between stationary devices and the hub, centralizing security functions in a powerful platform rather than requiring each low-power device to implement complex security measures
Data Source
AI summary
System and method for securely managing video captured by the IoT cameras. For example, one embodiment of a method comprises: generating a key pair comprising a private key and a public key; storing at least the private key on a data processing device of a user and storing only the public key on an internet of things (IoT) camera associated with an account of the user; in response to an event, the IoT camera to perform the operations of: generating a temporary data encryption key (DEK); encrypting video captured by the camera using the DEK to generated encrypted video blocks; encrypting the DEK using the public key to generate an encrypted DEK; and transmitting the encrypted video blocks and the encrypted DEK to a video storage service.