Enhancing E-Learning Content Security with AES 256-CBC Encryption and Storage on Interplanetary File System in Ethereum Network

Abstract

This research proposes the use of AES-256-CBC encryption, decentralized storage using Interplanetary File System (IPFS), and CID hash logging into the Ethereum. The system was tested using files of 5, 10, 15 and 100 MB, and shows that the encryption-decryption process has no significant impact on system performance. The security evaluation resulted 6 out of 7 test scenarios successfully prevented data theft, manipulation, and duplication after using attack simulations such as reply attacks, bit-flipping, Man-in-the-Middle (MITM), and Brute Force attacks. The total cost for logging CID hashes to Ethereum was $0.00913-0.01080$ ETH. Although throughput performance and execution time are volatile in both proposed and comparison system, the proposed system is superior in terms of system security and cost efficiency, making it feasible to use for e-learning content protection.

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