Information Steganography Algorithm Based on PDF Documents
Shangping Zhong, Tierui Chen · Jisuanji gongcheng · 2006
Aims at the prevalent PDF documents, this paper proposes a novel steganography algorithm. Firstly, it points out the secret channels in the PDF documents. Then, it describes the algorithm which is integrated with several strategies that are applied to improve security. The algorithm makes use of redundancy to complement security, and constitutes a chaotic map to meet the Kerckhoffs principle. The analysis and experimental results show that this algorithm is efficient that can embed data of unlimited length into PDF documents and the embedded PDF documents keep transparency when being displayed in PDF readers.