Implementation of Modified Attribute-Based Encryption in Blockchain for Enhanced Security and Improved Quality of Service

In recent years, blockchain technology has gained immense popularity due to its decentralized and secure nature. However, traditional blockchain systems still face security challenges in terms of confidentiality, integrity, and availability of data. Attribute-based encryption (ABE) is a promising solution to address these challenges, as it provides fine-grained access control and enhances data privacy. In this paper, we propose the implementation of modified ABE in blockchain to improve security and quality of service. Our modified ABE scheme introduces a dynamic access control policy, which enables the blockchain system to update the access control policy in real-time, based on the changing requirements of the data owners. Moreover, our scheme leverages the advantages of smart contracts to automate the process of key generation and distribution, thereby improving the efficiency and scalability of the system. To evaluate the performance of our proposed scheme, we conduct extensive experiments on a private Ethereum blockchain network. The results demonstrate that our modified ABE scheme achieves high security and efficiency, while ensuring the confidentiality and availability of data. We also compare our scheme with existing ABE-based blockchain systems and show that our scheme outperforms them in terms of security, efficiency, and flexibility. In summary, our proposed modified ABE scheme offers an innovative solution to enhance the security and quality of service of blockchain systems. The scheme’s dynamic access control policy and smart contract-based key management improve the efficiency and scalability of the system, making it an attractive option for various applications that require secure and efficient data sharing.