Utilizing Diacritic Marks for Arabic Text Steganography
Adnan Abdul Aziz Gutub, Lahouari Ghouti, Yousef Elarian, Sameh M. Awaideh, Aleem Khalid Alvi · 2010
Arabic diacritic marks represent efficient carriers to hide information in plain text. The ability of diacritics to be invisibly superimposed on each oth er when typed multiple times consecutively makes them suitable for robust data-hiding applications. In this paper, we propose two different algorithms to map secret messages into repeated diacritics in a n on-wasteful fashion, where the number of extra diacritics is defined in fixed and variable size fa shions. Therefore, the size of the outputted text i s decided by the encoding flexibility. Both steganogr aphic algorithms are characterized by several advantages over their existing counterparts. Finall y, we provide a detailed performance analysis of bo th algorithms in terms of embedding capacity, robustne ss and file-size measures.