A Blockchain and Cryptography-Based Framework for Secure Log Integrity Verification

Abstract

Security protection of dynamically generated log files requires immediate prevention against alteration, reliability, and compliance of current systems. The research creates a novel framework that integrates blockchain technology with cryptographic hashing methods to establish resistant and immutable log authentication mechanisms. The system dynamically generates log files through Python while saving a cryptographic hash (SHA-256) for verification of file integrity. Security and authentication of these hashes occurs through an Ethereum blockchain smart contract named Sepolia testnet. The framework uses Remix IDE along with Web3.py through Infura to connect into the Ethereum Sepolia testnet for launching smart contracts development. Simulation results demonstrated the system effectiveness by showcasing how logs remain immutable while providing performance data including transaction processing time and gas usage and event output. The research demonstrates how blockchain technology can power real-time log verification systems and suggests foundations for future decentralized security system developments.