Comprehensive Comparison of Post-Quantum Digital Signature Schemes in Blockchain

Abstract

Blockchain is a distributed database that has gained much attention from researchers in recent years owing to its capacity to create transparent, redundant, and accountable connections in several application domains using asymmetric cryptography and digital signature. Nevertheless, blockchain systems are vulnerable to attacks from quantum computers using Shor's and Grover's algorithms. Post-quantum cryptography, according to several researchers, withstands quantum attacks. To address the problem, we examine the performance of various post-quantum digital signature algorithms in Blockchain and provide a comprehensive comparison in terms of computing time and memory usage in this study.