(2025-12) Leakage-Resilient Multi-Party Computation; Protecting the Evaluator in Circuits Garbling
2025-12-17
Garbling schemes allow two parties to compute a joint function on private inputs without revealing them. Yet, a semi-honest garbler might exploit hardware/software sidechannel leakages from the evaluator. An alarming threat with no concrete solution yet. Using the homomorphic properties of ElGamal encryption, we can prevent such leakage-based attacks.