4 papers · 1 filter
Inevitability of Encrypted Traffic Side-Channel Leakage in the Multi-Class Setting
Guangjie Liu, Guang Cheng, Weiwei Liu
The Side-Channel Existence Theorem proves in the binary, undefended setting, but is confined to pairwise arguments and ignores active defenses. We extend it to class…
Rate-Distortion Function for Encrypted Traffic Side-Channel Defense
Guangjie Liu, Guang Cheng, Weiwei Liu +1
Parameter selection for encrypted traffic defense has long relied on empirical tuning, yet the fundamental question -- \emph{given a QoS cost budget , how low can the leakage ra…
A Queueing-Stability Criterion for Causal IPD-QIM Network Flow Watermarking
Jiuxiang Cao, Guang Cheng, Guangjie Liu
On multi-hop encrypted links such as Tor and cascaded VPNs, tunneling flattens packet lengths and protocol fields, leaving inter-packet delay (IPD) as the main carrier for active f…
The Inevitability of Side-Channel Leakage in Encrypted Traffic
Guangjie Liu, Guang Chen, Weiwei Liu
The widespread adoption of TLS 1.3 and QUIC has rendered payload content invisible, shifting traffic analysis toward side-channel features. However, rigorous justification for why…