Blockchain Signatures to Ensure Information Integrity and Non-Repudiation in the Digital Era: A comprehensive study

Abstract

Blockchain, hailed as one of the most promising technologies, has garnered significant attention due to its captivating features, such as decentralized ledger and robust security. Among these, non-repudiation stands out as a crucial aspect of information security within blockchain systems. Employing a digital signature scheme emerges as an effective strategy to ensure non-repudiation in this context. The study is to analyze digital signature used in blockchain technology to identify their role in accomplishing non-repudiation and preserving information integrity. Through an extensive exploration of blockchain features, the study underscores the role of digital signatures in maintaining information integrity. A detailed analysis of each identified digital signature scheme is conducted. This analysis includes studying the mathematical foundations of the scheme, its security assumptions, and cryptographic properties such as Authentication, Completeness, Integrity, Non-repudiation, Tamper Detection, Efficiency, Security, Scalability, Cross-platform Compatibility, Timestamping, Global Acceptance, Long-Term Validity, Unlinkability, Traceability, and Application area. The paper surveys digital signature schemes in blockchain for non-repudiation, suggesting future research: 1) exploring ring and blind signatures for Bitcoin transaction anonymity, 2) integrating digital signatures with authentication and timestamps for broader security, and 3) creating certificateless aggregation signatures for IoT devices, aiming to enhance security and performance. This study contributes to advancing the development of secure and efficient digital signature algorithms tailored specifically for blockchain applications.