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InfoResearchPeer-reviewed
OptiVersa-ECDSA: Fast Threshold-ECDSA With Cheater Identification for Blockchains
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Summary
The paper proposes OptiVersa-ECDSA, a threshold-ECDSA protocol with a cheater identification mechanism (CIM) and fast online signing, built on new tools called verifiable secret-product sharing (VSPS) and batch VSPS. The authors claim security against malicious adversaries in the dishonest majority model. Their performance analysis reports 35% to 65% bandwidth and runtime improvement over Canetti et al. (CCS'20), and 99% for the CIM module.