Large-Capacity Local Multi-Dimensional Information Hiding Method for 6G Networks

Abstract

A 6G network is not only faster, but also offers a wider range of services than 5G networks, which will lead to an increased number of participants. However, combined with the Internet of Everything, 6G networks face security issues such as man-in-the-middle hijacking and bypass listening. Because covert transmission is inherently highly concealed and difficult to detect, a 6G network based on information hiding has become a new paradigm to solve such security problems. In this article, we propose a large-capacity local multi-dimensional information hiding method based on orthogonal space and spread transform. By extending the quantization index modulation hiding approach, the proposed method hides the multi-layer information in digital signals' multi-dimensional space using orthogonal space and spread transform. In theory, this method can hide information in multiple layers at the same location while allowing the extraction of information from multiple layers independently. This proposed method offers a much higher hiding capacity than prior work. Through performance analysis and comparison against existing advanced methods, we demonstrate the superiority of the proposed scheme.