Advancements in High-Capacity Coverless Information Hiding: A Comprehensive Review of Robust Hashing Techniques

Abstract

Coverless information hiding techniques, particularly those leveraging high-capacity approaches based on robust hashing algorithms, have gained prominence for their ability to securely embed significant volumes of data without relying on explicit cover images. This survey paper provides a thorough evaluation of the performance of such techniques, focusing on their capacity, robustness against attacks, computational efficiency, and comparative analysis with existing methods. Capacity assessments demonstrate the techniques’ capability to conceal large amounts of data, while robustness evaluations encompass various attack scenarios to gauge their resilience. Computational efficiency considerations shed light on practical implementation feasibility. Through comprehensive analysis and comparison, this survey offers valuable insights into the effectiveness and efficiency of high-capacity coverless information hiding techniques, serving as a guide for researchers and practitioners in the field.