What is SPDZ? Part 2: Circuit Evaluation

This blog post is the second in a series of three in which we describe what SPDZ is. The first part can be found here and the third here . In this part we discuss how we perform the additions and multiplications of shared secret values as in the SPDZ protocol. The Preprocessing Model The preprocessing model is a framework in which we assume the existence of a 'trusted dealer' who distributes 'raw material' to the parties before any circuit evaluation takes place. The reason for doing this i