Block Chain and Cryptography based Secure Communication System

The block chain is a cutting-edge technology that reduces risks by allowing vital tasks to be decentralized procedure, while retaining a high level of security. It eliminates the dependable intermediaries from the network. The block chain technology, which records all previous transactions, these accessible to all network nodes. The goal of our paper is to create a block chain-based secure communication system. We also explain about why block chain would improve communication security? It also proposes a model design for block chain-based messaging that focuses on training the performance. Security of data recorded on the block chain, using a smart contract to identities and their associated public keys, as well as validating the user’s certificate.