A Comprehensive Framework for Building Highly Secure, Network-Connected Devices: Chip to App

TL;DR

This paper presents a comprehensive security framework for network-connected devices, addressing hardware, firmware, communication, and future-proofing to enhance device confidentiality, integrity, and availability.

Contribution

It introduces a holistic security approach covering all device layers, including novel recommendations for post-quantum cryptography and lightweight digital certificates.

Findings

Enhanced hardware security with secure key management

Implementation of TLS 1.3 and optimized cipher suites

Use of compact digital certificates like CBOR for IoT devices

Abstract

The rapid expansion of connected devices has amplified the need for robust and scalable security frameworks. This paper proposes a holistic approach to securing network-connected devices, covering essential layers: hardware, firmware, communication, and application. At the hardware level, we focus on secure key management, reliable random number generation, and protecting critical assets. Firmware security is addressed through mechanisms like cryptographic integrity validation and secure boot processes. For secure communication, we emphasize TLS 1.3 and optimized cipher suites tailored for both standard and resource-constrained devices. To overcome the challenges of IoT, compact digital certificates, such as CBOR, are recommended to reduce overhead and enhance performance. Additionally, the paper explores forward-looking solutions, including post-quantum cryptography, to future-proof systems against emerging threats. This framework provides actionable guidelines for manufacturers and system administrators to build secure devices that maintain confidentiality, integrity, and availability throughout their lifecycle.