Cyber Communication by Using Block Chain Technology Systems

In the fast-growing digital age, systems for communicating through cyber means allow people, organisations and governments to share information in real-time. Unfortunately, the majority of the current communications networks use a centralised architecture, which are susceptible to cyber threats like data breaches, identity theft, man in the middle attack, and distributed denial of service attacks. These vulnerabilities degrade the confidentiality, integrity, availability and trust in the digital communication systems. This research proposes a secure cyber communication framework using blockchain technology to bypass the limitations of the current systems. The framework uses decentralised distributed ledger technology, public/private key cryptography, digital signatures, cryptographic hash functions and smart contracts to facilitate the secure transmission of messages, authenticate user identity and maintain a tamper-proof record of messages. All messages will be encrypted, digitally signed for authenticity and validated using consensus before being permanently recorded onto the blockchain. This architecture will reduce reliance on third-party intermediaries while providing greater resilience and transparency against cyber-attacks, as well as eliminating single points of failure. Performance, scalability and energy consumption will also be discussed in this study. According to the results, use of blockchain for cyber-communication is associated with high levels of security; therefore, the use of blockchain in future decentralised communication networks should result in more secure, trustworthy, and reliable systems within all key industries.