@conference {spie07:zero-knowledge, title = {Efficient Non-Interactive Zero-Knowledge Watermark Detector Robust to Sensitivity Attacks}, booktitle = {Security, Steganography, and Watermarking of Multimedia Contents}, series = {Proc. of SPIE}, year = {2007}, month = {January}, publisher = {SPIE}, organization = {SPIE}, address = {San Jose, California, USA}, keywords = {data-hiding, sensitivity, watermarking, zero-knowledge}, author = {Juan Ram{\'o}n Troncoso-Pastoriza and Fernando P{\'e}rez-Gonz{\'a}lez}, editor = {Edward J. Delp and Ping W. Wong} }