An Improved Coverless Text Steganography Algorithm Based on Pretreatment and POS

• Yuling Liu,
• Jiao Wu,
• Xianyi Chen,

Vol. 15, No. 4, April 30, 2021
10.3837/tiis.2021.04.020, Download Paper (Free):

• Steganography
• Coverless Text Steganography
• Pretreatment
• Chinese Character Component
• Locating Mark
• Part of Speech

Abstract

Steganography is a current hot research topic in the area of information security and privacy protection. However, most previous steganography methods are not effective against steganalysis and attacks because they are usually carried out by modifying covers. In this paper, we propose an improved coverless text steganography algorithm based on pretreatment and Part of Speech (POS), in which, Chinese character components are used as the locating marks, then the POS is used to hide the number of keywords, the retrieval of stego-texts is optimized by pretreatment finally. The experiment is verified that our algorithm performs well in terms of embedding capacity, the embedding success rate, and extracting accuracy, with appropriate lengths of locating marks and the large scale of the text database.

Statistics

Cite this article