Two-Round Threshold Signature from Algebraic One-More Learning with Errors

ePrint Report: Two-Round Threshold Signature from Algebraic One-More Learning with Errors

Thomas Espitau, Shuichi Katsumata, Kaoru Takemure

Threshold signatures have recently seen a renewed interest due to applications in cryptocurrency while NIST has released a call for multi-party threshold schemes, with a deadline for submission expected for the first half of 2025. So far, all lattice-based threshold signatures requiring less than two-rounds are based on heavy tools such as (fully) homomorphic encryption (FHE) and homomorphic trapdoor commitments (HTDC). This is …

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