Blockchain is an emerging technology, leveraged with features of decentralization, tamper-proof records storage model based on a Peer-to-Peer architecture. It has been mostly applied in financial applications, and extended to various applications, viz., healthcare, supply-chain, and identity management. However, privacy, security, and scalability are the key challenges in blockchain-based applications that immensely limit the extensive adoption of these extended applications.
The work in this thesis addresses the aforementioned challenges, while preserving better privacy, security, and scalability in blockchain-based applications. We propose access control techniques to facilitate better privacy, security in the blockchain network and improve scalability off-chain storage model. First, we propose an access control technique to preserve privacy across the blockchain network such that authorized peers can access the resources. Initially, the access control technique is designed for resource privacy. Further, we extend the policy to preserve privacy in blockchain network by categorizing both peers and resources.
In this thesis, we also address another important problem, i.e., scalability in blockchain network while storing large size of data in secure off-chain storage. We use a secure distributed off-chain storage model to address the problem of scalability, based on the structure of the blockchain network. Lastly, we propose two-level of privacy preservation approach in blockchain network, while maintaining the scalability in the network. The proposed approach uses BlockCloud-BlockFog structure for deployment and IPFS-based off-chain storage model for large size data storage. All the proposed frameworks are evaluated using real-world data sets.
Inhaltsverzeichnis (Table of Contents)
- Introduction
- Literature Review
- Blockchain Technology
- Privacy-Preserving Techniques
- Scalability Issues in Blockchain
- Proposed Blockchain Framework
- System Architecture
- Security Mechanisms
- Privacy-Preserving Techniques
- Scalability Solutions
- Implementation and Evaluation
- Prototype Development
- Performance Evaluation
- Security Analysis
- Privacy Analysis
- Applications and Use Cases
- Supply Chain Management
- Healthcare
- E-voting
- Conclusion
Zielsetzung und Themenschwerpunkte (Objectives and Key Themes)
This thesis aims to design and develop a novel blockchain framework that addresses the critical challenges of security, privacy, and scalability in blockchain technology. The research explores existing blockchain solutions, analyzes their limitations, and proposes a robust framework that enhances security, preserves user privacy, and scales effectively to handle large-scale transactions.
- Secure Blockchain Framework
- Privacy-Preserving Techniques in Blockchain
- Scalability Solutions for Blockchain Networks
- Real-World Applications of the Proposed Framework
- Performance Evaluation and Analysis
Zusammenfassung der Kapitel (Chapter Summaries)
The thesis begins by providing a comprehensive overview of blockchain technology, highlighting its advantages and limitations, particularly in the context of security, privacy, and scalability. It then delves into various privacy-preserving techniques, exploring their suitability for enhancing blockchain systems. The proposed framework is presented in detail, outlining its architecture, security mechanisms, privacy-preserving approaches, and scalability solutions. The implementation and evaluation section focuses on the development of a prototype, its performance analysis, and an assessment of its security and privacy aspects. Finally, the thesis discusses potential applications of the proposed framework across diverse domains, including supply chain management, healthcare, and e-voting, showcasing its real-world relevance.
Schlüsselwörter (Keywords)
Blockchain, Security, Privacy, Scalability, Cryptography, Distributed Ledger Technology, Smart Contracts, Privacy-Preserving Techniques, Performance Evaluation, Applications, Use Cases.
- Quote paper
- Randhir Kumar (Author), 2021, Design and Development of a Secure, Privacy Preserving, and Scalable Blockchain Framework, Munich, GRIN Verlag, https://www.grin.com/document/1383515
