Secure Multiparty Computation with Identifiable Abort from Vindicating Release

ePrint Report: Secure Multiparty Computation with Identifiable Abort from Vindicating Release

Ran Cohen, Jack Doerner, Yashvanth Kondi, abhi shelat

In the dishonest-majority setting, generic secure multiparty computation (MPC) protocols are fundamentally vulnerable to attacks in which malicious participants learn their outputs and then force the protocol to abort before outputs are delivered to the honest participants. In other words, generic MPC protocols typically guarantee security with abort.


This flavor of security permits denial-of-service attacks in many applications, unless the cheating …

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