Secure computation using multi-party computation and a trusted execution environment

Abstract

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for using cryptography, secure MPC, and a TEE to perform computations in ways that preserve data privacy and protect the security of data of each party that is involved in the computation process. In one aspect, a first MPC system of a cluster of MPC systems receives, from a computing system, a first secret share of input data. The first MPC system sends, to an application running in a TEE separate from the cluster of MPC systems, first secret shares of a set of data items generated based at least in part on the first secret share of the input data. The application is configured to generate secret shares of application output data. The first MPC system performs, in collaboration with the one or more second MPC systems of the cluster, one or more secure multi-party computations.