Research on the Encryption Model of Network Security Information Transmission Based on Blockchain

This study proposes a network security information transmission encryption model based on blockchain, aiming to solve the security and privacy protection problems of information transmission in modern networks. The model combines the decentralized characteristics of blockchain and multi-party secure computing (MPC) technology to ensure confidentiality and integrity during data transmission. First, a transparent and tamper-proof encrypted information transmission link is established through blockchain technology, which effectively prevents the risk of data tampering and forgery. Secondly, the encryption algorithm based on multi-party secure computing further enhances the data privacy protection between the participants, ensuring that no single node can obtain all the information during the data transmission process. Through simulation experiments, the model’s anti-attack ability under various network attacks and its performance in different transmission environments are verified. The simulation results show that the model has significant advantages in the security and stability of data encryption transmission, especially in the face of man-in-the-middle attacks and denial of service attacks. It has a good defense effect. Experimental data show that its transmission encryption efficiency is about 15% higher than that of existing methods.