@conference {777, title = {Multivariate Lattices for Encrypted Image Processing}, booktitle = {IEEE International Conference on Acoustics, Speech and Signal Processing}, year = {2015}, month = {04/2015}, publisher = {IEEE}, organization = {IEEE}, address = {Brisbane, Australia}, keywords = {homomorphic encryption, lattice cryptography, SPED}, author = {Alberto Pedrouzo-Ulloa and Juan Ram{\'o}n Troncoso-Pastoriza and Fernando P{\'e}rez-Gonz{\'a}lez} }