A blockchain based secure communication framework for community interaction

The globalization of the modern world has highly affected the network communication. For the communication mostly closed and centralized systems are used which sometimes causes privacy problems. The associated systems cannot meet the integrity and transparency aspects of the information security. One such framework is ?community research applications?. The existing communication frameworks for community interactions are based on the trust of intermediary institutions, for example, a central authority server. It is considered to be at the risk of single-point failure attack. It can be worse as there may be some internal temperament without the knowledge of the concerned authorities. Therefore, designing of a blockchain based framework for the community interaction is highly recommended. In this paper, we propose a blockchain based secure communication framework for community interaction. In the proposed framework, we used the mechanism of blockchain and implemented it with a tamper-proof distributed ledger. We also implemented an additional layer of security using the RAFT algorithm in which a key management systems is deployed to handle the keys securely. On the basis of proposed framework an android application (app) has been developed to check its usability in the real-time environment. The provided security analysis proved the security of the proposed framework against the various types of possible attacks. We compared the performance of the proposed framework with respect to other similar approaches and found that the performance of the proposed framework is better than others.