@conference {mmsec07-spedpoint, title = {A Secure Multidimensional Point Inclusion Protocol}, booktitle = {ACM Workshop on Multimedia and Security (MMSEC)}, year = {2007}, month = {September}, pages = {109{\textendash}120}, address = {Dallas, Texas, USA}, keywords = {multiparty computation, privacy, security, watermarking}, author = {Juan Ram{\'o}n Troncoso-Pastoriza and Stefan Katzenbeisser and Mehmet Celik and Aweke Lemma} }