Cross-Layer Data Transmission Enhancement Techniques for Secure Communication

As the demand for secure data communication in cyberspace continues to grow, the concealment of the communication origin has become a critical indicator. Existing communication systems face issues such as static path structures and fixed communication exits, which pose risks of being cracked and interfered. This paper proposes and designs a data transmission enhancement system that integrates multiple network layers, including multi-path links at the transport layer, encrypted tunnels at the network layer, and routing mechanisms at the application layer. The system establishes a highly modular and orchestrable communication architecture with route perturbation capabilities. Experimental results show that the system achieves an average route establishment delay of 7.4 seconds, a $\text{1 0 0 \%}$ IP switching success rate, a large-file packet loss rate of less than 1 %, and a 100 % data integrity rate—demonstrating high transmission security and high availability. This research aims to provide a practical, deployable, and highly scalable secure protection solution for the field of secure communications.