Improving IoT data security with blockchain and SHA-3-based integrity validation for real-time transmission
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Date
2026-04-07
Journal Title
Journal ISSN
Volume Title
Publisher
IEEE
Abstract
The increased exponentially use of Internet of Things (IoT) tools has given serious considerations to the issue of security and integrity of data transferred on real time networks or questions of authenticity of data. This study suggests a secure messaging architecture of combining Blockchains with integrity validation protocol of SHA-3 assuring non-manipulated IoT real-time data streaming. The architecture proposed here would leverage the Keccak based SHA3-256 cryptographic hash algorithm to establish a unique data fingerprint to each transmission that it would then store on a Blockchain ledger through Proof-of-Authority (PoA) consensus mechanism. This enables receivers to match the hashes to validate authenticity of data received on the one hand, and compute a new hash to check the one attached by the sender on the other hand. It was then constructed with Python 3.13 and the libraries used included: hashlib, pandas, matplotlib, and time and simulations were carried out on synthetically produced sensor values representing temperature and humidity measurements of 10 abstract IoT devices. The data packets contain nonce, timestamp in real-time, and unique device ID to increase the entropy. The process of integrity validation and blockchain logging was tested with pace of hash computing, the delay of blockchain logging and the authenticity of verification. It was experimentally observed that 100 percent data integrity was achieved by the system in normal circumstances where hashing time of the system was on the order of 0.11 ms, blockchain logging latency ranged between 50 to 150 ms, and verification was as observed < 0.06 ms. These findings confirm the viability of the combination between blockchain and SHA-3 in lightweight, secure, and real-time communication of IoT. There is a guarantee of reproducibility and scalability to be deployed in real-world systems (home automation in smart homes, industry automation, and patient monitoring).
Description
This research contributes to the attainment of United Nations Sustainable Development Goals, particularly SDG 9 on industry, innovation, and infrastructure, and SDG 3 through secure patient monitoring systems. It also supports Uganda’s National Planning Authority Uganda NDP IV by promoting digital transformation, secure ICT infrastructure, industrial automation, innovation, and reliable data systems for smart technologies and national development.
Keywords
IoT Security, Blockchain, SHA-3 Hashing, Data Integrity, Real-Time Transmission
Citation
Dhamodharan, R., Rajeswari, S. V., & Charanya, P. (2025, September). Improving IoT data security with blockchain and SHA-3-based integrity validation for real-time transmission. In 2025 6th International Conference on Smart Electronics and Communication (ICOSEC) (pp. 943-948). IEEE.