Semi-honest MPC ⇒ Semi-honest MPC with honest majority

Fully-black-box reduction · standard model · folklore · security loss: none

Statement

A protocol secure against semi-honest adversaries corrupting up to $n-1$ parties (semi-honest security) is secure against semi-honest adversaries corrupting fewer than $n/2$ parties (semi-honest, honest majority), since those adversaries are among the former — folklore.