The Round Complexity of Perfect MPC with Active Security and Optimal Resiliency

Explore the intricacies of perfect Multi-Party Computation (MPC) with active security and optimal resiliency in this 26-minute IEEE conference talk. Delve into information-theoretic aspects, constant round complexity, and recent developments in the field. Learn about the BGW protocol for degree-2 polynomials, techniques for trading errors with erasures, and the concept of second-level multiplication. Examine protocol folding, the reduction of binary degree-2 to arithmetic, and the impossibility of 3-round T=n/4 protocols. Investigate Verifiable Secret Sharing (VSS) and its relation to MPC, as well as the process of protocol chopping. Gain insights into the analysis of MPC guarantees and VSS properties, ultimately understanding the landscape of perfect MPC protocols.