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Blockchain-Assisted Weighted Threshold EdDSA With Rational Identifiable Aborts
- Published
- Record updated
Summary
The authors propose EdFROST, a threshold EdDSA protocol that supports identifiable aborts under a chosen-message attack (IA-CMA), built on FROST3 from Ruffing et al. (ACM CCS '22). They extend it into the first weighted threshold EdDSA scheme that accounts for both participant count and arbitrary weight distribution to reduce weight centralization. A game-theoretic incentive model, implemented via tamper-proof chaincode, aims for rational identifiable aborts with a unique sequential equilibrium, and experiments report EdFROST and the chaincode as efficient and lightweight.