Smart Contract Assisted Blockchain based PKI System

TL;DR

This paper presents a blockchain-based PKI system utilizing smart contracts and DPoS consensus to prevent multiple cyber attacks, offering improved timing efficiency for validation and revocation processes.

Contribution

It introduces a smart contract-enabled PKI system that enhances security against cyber attacks and optimizes validation timing, suitable for lightweight applications.

Findings

Prevents seven major cyber attacks.

Reduces validation timing complexity.

Outperforms existing solutions in timing parameters.

Abstract

The proposed smart contract can prevent seven cyber attacks, such as Denial of Service (DoS), Man in the Middle Attack (MITM), Distributed Denial of Service (DDoS), 51\%, Injection attacks, Routing Attack, and Eclipse attack. The Delegated Proof of Stake (DPoS) consensus algorithm used in this model reduces the number of validators for each transaction which makes it suitable for lightweight applications. The timing complexity of key/certificate validation and signature/certificate revocation processes do not depend on the number of transactions. The comparisons of various timing parameters with existing solutions show that the proposed PKI is competitively better.