Involving Spaces of Unicode Standard Within Irreversible Arabic Text Steganography for Practical Implementations

摘要

This paper introduces a novel method for Arabic text steganography for irreversible practical usage that involves using the spaces in Unicode standard. The method also benefits from several characters in the Arabic language that can be changed based on their locations within words. The main innovation of this proposed method is the utilization of the different typescripts of Unicode standard for each letter shape. The technique also utilizes spaces and other Unicode features of Arabic e-text to hide secret data. This method depends on the use of contextual forms of Arabic characters and whitespaces to irreversibly hide certain specific secret bits. Additionally, the method employs the extra characters zero-width-joiner and Kashida to further enhance embedding capacity while preserving maximum security. The research implementation experiments show that this technique outperforms most available existing irreversible methods in both capacity and security. Moreover, this procedure can be widely adopted in related languages, such as Urdu and Farsi, due to their use of similar Unicode features, which is the encoding standard used in most of the world’s writing systems.