RoundRole: Unlocking the Efficiency of Multi-party Computation with Bandwidth-aware Execution
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Presented at NDSS 2026 by
In privacy-preserving distributed computation systems like secure multi-party computation, cross-party communication is the primary bottleneck. Over the past two decades, numerous remarkable protocols have been proposed to reduce the overall communication complexity, substantially narrowing the gap between MPC and plaintext computations. However, these advances often overlook a crucial aspect: the asymmetric communication pattern. This imbalance results in significant bandwidth wastage, thereby “locking” the performance.