Hardware-enhanced data security for Internet of Things

The Internet of Things (IoT) has become deeply embedded in daily life, enabling pervasive collection of user and environmental data. However, securing sensor-edge-cloud IoT architectures remains a critical challenge due to their exposure to open environments, resource-constrained devices, and stringent requirements for high throughput and real-time responsiveness. While existing software-centric security solutions inadequately address these constraints, we propose a hardware-enhanced security framework that embeds specialized security chips across all IoT layers. At the sensor layer, the privacy-enabled analog-to-digital converter (ADC) integrates lightweight encryption during data acquisition to prevent raw sensitive data exposure. Edge nodes employ dedicated authentication microcontroller units (MCUs) to validate data integrity and source legitimacy under high concurrency. Cloud servers utilize cryptographic system-on-chip (SoC) modules for hardware-accelerated encryption and fine-grained access control, enabling secure storage and dynamic policy enforcement. By shifting security primitives to hardware, this framework inherently mitigates software vulnerabilities, sustains high-throughput data processing, and minimizes reliance on resource-intensive software stacks, thereby establishing a robust foundation for next-generation IoT systems.