Aabed et al redundancy in diacritics is used to hide

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Unformatted text preview: t Kashidahs. • Aabed et al.: – Redundancy in diacritics is used to hide information by omitting some diacritics. information 3 The main idea: Diacritics The Notice the differences in levels of Notice darkness (as to the right) or colors (as below) in the single and the repeated diacritics. and 4 )Hiding Scenario (1 Hiding • 1st scenario (Secret = 110001 ) Secret – Direct (block size = inf.) Direct (block For each block bi = nd Repeat the ith diacritic nd times. times. Repeat the 1st diacritic 49 extra times 5 )Hiding Scenario (2 Hiding • Blocked • Block size=2 – For Secret = 110001 For Secret 1 1 3 0 0 0 0 1 1 Divide Secret into block of 2-bits Divide Repeat the first diacritic 3 times (3 = (11)b), Repeat the second one 0 times (0 = (00)b), ), and the third one...
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