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arXiv:1907.06679cs.CL

Towards Near-imperceptible Steganographic Text

Falcon Z. Dai, Zheng Cai

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Abstract

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.

arXiv comments
To appear at ACL 2019. Code available
Journal reference
DOI
Subjects
cs.CLComputation and Language cs.CRCryptography and Security cs.LGMachine Learning

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