Educational Resource Sharing based on Blockchain Technology using Elliptical Curve Digital Signature Algorithm-Proof-of-Stake

Abstract

The technology of blockchain is popular because of its properties like transparency, immutability, control decentralization, and distributed storage. The skill verification and student certificate are utilized for the application of job and other purposes. The certificate forgery with centralized authority is a primary problem in online education. This problem is addressed employing blockchain-based management of certificate for students and the management of skill evidence for employees. However, those kinds of management of certificate have privacy and security problems. To address these problems, the Elliptical Curve Digital Signature Algorithm (ECDSA)-based Proof-of-Stake (POS) is proposed for educational resource sharing on certificate management to solve privacy and security issue in blockchain. In the signature verification stage, the POS employed to verify the transaction of a blockchain and establish new blocks in a blockchain. The proposed ECDSA-POS technique achieves better file upload time of 0.0002541 seconds in 50 kb and single transaction time of 45 milli seconds compared to existing method like PHP blockchain.