Time-Based Steganography in Text

Ghoraeian, Zahra; Sadeghi, Mohammad Reza; Mashhadi, Samaneh

doi:10.22042/isecure.2026.242053

Time-Based Steganography in Text

Articles in Press

Document Type : Research Article

Authors

Zahra Ghoraeian ¹

Mohammad Reza Sadeghi ¹

Samaneh Mashhadi ²

¹ Department of Mathematics and Computer Science, Amirkabir University of Technology – Tehran Polytechnic, Tehran, Iran.

² School of Mathematics and Computer Science, Iran University of Science and Technology, Narmak, Tehran, Iran.

10.22042/isecure.2026.242053

Abstract

Preserving data confidentiality is crucial in today’s digital world where data exchange is increasingly becoming digital. This paper presents a novel text steganography algorithm. Initially, the secret message is converted into a bit stream. This bit stream is then shuffled using a random sequence to enhance security. Finally, the data is converted into a specific ”time” (including date and hour), and this generated time is embedded within a suitable cover text. The results demonstrate that the proposed algorithm is robust against a variety of attacks, including retyping, OCR, printing and photocopying, compression, document feature modification, non-Unicode environment conversion, and semantic paraphrasing. The algorithm is language-independent and applicable to all languages. The scheme exhibits high transparency against visual and machine attacks and has a capacity of 18 bits per time. The embedding of information bits using a random sequence enhances the scheme’s resistance against detection attacks.

Keywords

Data Confidentiality

Data Hiding

Information Security

Text Steganography

Text Watermarking

[1] Nor Ashila Roslan, Nur Izura Udzir, Ruzliza Mahmod, and Abdallah Gutub. Systematic literature review and analysis for arabic text steganography method practically. Egyptian Informatics Journal, 23(4):177–191, 2022.

[2] Mojtaba Taleby Ahvanooey, Qing Li, Jiarui Hou, Ameer Raza Rajput, and Yang Chen. Modern text hiding, text steganalysis, and applications: a comparative analysis. Entropy, 21(4):355, 2019.

[3] Igor Stojanov, Aneta Mileva, and Ivana Stojanovic. A new property coding in text steganography of microsoft word documents. 2014.

[4] R Din, Rafsanjani Ab Thabit, Nur Izura Udzir, and Sonny Utama. Traid-bit embedding process on arabic text steganography method. Bulletin of Electrical Engineering and Informatics, 10(1): 493–500, 2021.

[5] Marwah Alaa Majeed, Rosli Sulaiman, and Zaitun Shukur. New text steganography technique based on part-of-speech tagging and formatpreserving encryption. KSII Transactions on Internet & Information Systems, 18(1), 2024.

[6] Santosh Panwar, Manoj Kumar, and Sheetal Sharma. Text steganography based on parallel encryption using cover text (pect). In 4th International Conference on Internet of Things and Connected Technologies (ICIoTCT), 2019: Internet of Things and Connected Technologies, pages 303–313. Springer International Publishing, 2020.

[7] R Gurunath and D Samanta. A new 3-bit hiding covert channel algorithm for public data and medical data security using format-based text steganography. Journal of Database Management (JDM), 34(2):1–22, 2023.

[8] Lokesh Kumar Tyagi, Aayush Gupta, and Adel Mohamed. Unveiling the invisible an in-depth analysis of text steganography techniques, challenges, and advancement. In 2023 3rd International Conference on Technological Advancements in Computational Sciences (ICTACS), pages 177–183. IEEE, 2023.

[9] Muhammad Askari, Arfan Mahmood, and Zunaira Iqbal. A novel font color and compression text steganography technique. In 2023 International Conference on Communication, Computing and Digital Systems (C-CODE), pages 1–6. IEEE, 2023.

[10] Umer Khadam, Muhammad Mubashir Iqbal, Leonardo Mostarda, and Fida Ullah. An efficient framework for text document security and privacy. In Security and Privacy in Social Networks and Big Data: 6th International Symposium, SocialSec 2020, Tianjin, China, September 26–27, 2020, Proceedings 6, pages 132–140. Springer Singapore, 2020.

[11] M Shazzad-Ur-Rahman, Anik Singha, Nipa Ibne Akhtar, M Fahim Ashhab, Kaif Ali, et al. An efficient bengali text steganography method using bengali letters and whitespace characters. In Proceedings of International Conference on Trends in Computational and Cognitive Engineering: Proceedings of TCCE 2020, pages 477– 487. Springer Singapore, 2021.

[12] M Khairullah. A novel text steganography system in financial statements. IJDTA International Journal of Database Theory and Application, 7(5):123–132, 2014.

[13] Chin-Yung Chang. Transformations for linguistic steganography. PhD thesis, University of Southern California, 2023.

[14] Sven Wendzel, Luca Caviglione, Wojciech Mazurczyk, Aneta Mileva, Jana Dittmann, Christian Kr¨atzer, J¨org Schwenk, and Sarah Zillien. A generic taxonomy for steganography methods. Authorea Preprints, 2023.

[15] Mustafa Vefa Arısoy. Lzw-cie: a high-capacity linguistic steganography based on lzw char index encoding. Neural Computing & Applications, 34 (21):19117–19145, 2022.

[16] Mohammad Shirali-Shahreza. Pseudo-space persian/arabic text steganography. In 2008 IEEE Symposium on Computers and Communications, pages 864–868. IEEE, 2008.

[17] Wei Peng, Tao Wang, Zheng Qian, Shu Li, and Xinxing Zhang. Cross-modal text steganography against synonym substitution-based text attack. IEEE Signal Processing Letters, 30:299– 303, 2023.