Exploration of the Blockchain Oriented Computer Network Security Optimization Method in the Big Data Environment

다국어 초록 (Multilingual Abstract)

With the rapid development of the Internet and communication networks, cyberspace is accumulating a lot of data, and methods of ensuring the security and confidentiality of these network's data are the core content of the present work. Information science can also guarantee the security construction of network information and improve the security of network data. However, the current computer network is facing unprecedented problems, especially data security and information leakage. These can seriously endanger the network's security defense, while also affecting the user's personalized experience and causing economic loss. Network security data and information problems will affect network order. Thus, this paper optimized the use of computer networks and data backup by using blockchain technology (hereinafter referred to as "BT" for the reader's convenience) through analyzing the attack methods, problems and threats of computer network security (hereinafter referred to as "NS" for the reader's convenience) under big data, so as to ensure network data security and tamper resistance and improve NS performance. Based on the genetic neural algorithm, the error function value of the computer NS was declining, while the fitness function value was rising. The mean value of the error function was about 0.42, and the mean value of the fitness function was about 0.56. In the whole process, the error function value of computer NS decreased by 0.49, and the fitness function value increased by 0.37. The information security and data backup reliability of the computer NS system under BT were better than those of the original computer's NS system; the information security of the computer NS system under BT was about 12.95% higher than that of the original computer NS system, and the reliability of data backup was about 10.64% higher than that of the original computer NS system. In short, information science and blockchain seem to be able to improve the performance of computer NS.