We solve the millionaires problem in semi-trusted model with homomorphic encryption without using intermediate decryptions. This leads to computationally least expensive solution so far, a low bandwidth and very storage complexity. The number of modular multiplications needed is less than for one Pallier encryption. output protocol can be either publicly known, encrypted, or secret-shared. priv...

In transmultiplexing systems digital images are combined into one image in order to be sent through a single communication channel. At the receiver end the combined image is split to recover the transmitted images. Integer−to−integer filters ensure perfect reconstruction. A simple and effective filter designing method is presented in this paper.