Digital invisible ink: revealing true secrets via attacking. - Chun-Hsiang Huang; Yu-Feng Kuo; Ja-Ling Wu (AsiaCCS, 2006)

A Colorization Based Animation Broadcast System with Traitor Tracing Capability. - Chih-Chieh Liu; Yu-Feng Kuo; Chun-Hsiang Huang; Ja-Ling Wu (IWDW, 2006)