AnoDS: A Blockchain-Based Anonymous Small Donation System for IoT Devices

This article introduces the anonymous small donation system (AnoDS), a blockchain-based AnoDS for Internet of Things (IoT) devices in industrial environments. Traditional donation models often rely on centralized charitable organizations, which can cause delays and reduce transparency. AnoDS aims to address these issues by leveraging blockchain's decentralized and tamper-resistant nature, allowing direct interaction between donors and donees via IoT devices. The system integrates seamlessly with industrial IoT networks, incorporating digital identity management and efficient pointcheval-sanders signature (PS) signatures to ensure real-time tracking of donations while preserving donor anonymity. We implement the core cryptographic components of AnoDS and conduct micro-benchmarks of the underlying cryptographic operations to estimate its computational and communication overhead. The results indicate that AnoDS achieves high efficiency and low communication overhead under realistic parameter settings, making it suitable for deployment in industrial IoT scenarios. In addition, we formalize the system and threat models, analyze the security properties under clearly stated trust assumptions, and compare AnoDS with representative donation schemes in terms of functionality and efficiency. This system offers a secure, transparent, and efficient solution for anonymous donations in IoT-driven industrial environments.