Towards Near-imperceptible Steganographic Text
Falcon Z. Dai, Zheng Cai · 2019
We show that the imperceptibility of several existing linguistic steganographic systems (Fang et al., 2017;Yang et al., 2018) relies on implicit assumptions on statistical behaviors of fluent text.We formally analyze them and empirically evaluate these assumptions.Furthermore, based on these observations, we propose an encoding algorithm called patient-Huffman with improved near-imperceptible guarantees.