Chao Tian

collaborators

2 papers

cs.IT2025

Relatively-Secure LLM-Based Steganography via Constrained Markov Decision Processes

Yu-Shin Huang, Chao Tian, Krishna Narayanan +1

Linguistic steganography aims to conceal information within natural language text without being detected. An effective steganography approach should encode the secret message into…

cs.IR2025

Optimizing Leaky Private Information Retrieval Codes to Achieve $O (lo g K)$ Leakage Ratio Exponent

Wenyuan Zhao, Yu-Shin Huang, Chao Tian +1

We study the problem of leaky private information retrieval (L-PIR), where the amount of privacy leakage is measured by the pure differential privacy parameter, referred to as the…

Relatively-Secure LLM-Based Steganography via Constrained Markov Decision Processes

Optimizing Leaky Private Information Retrieval Codes to Achieve O(logK) Leakage Ratio Exponent

Optimizing Leaky Private Information Retrieval Codes to Achieve $O (lo g K)$ Leakage Ratio Exponent