Practical two-party SM2 signing using multiplicative-to-additive functionality

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Shiyang Li, Wenjie Yang, Futai Zhang, Xinyi Huang, Rongmao Chen

Published: 2025, Last Modified: 13 Nov 2024Comput. Stand. Interfaces 2025EveryoneRevisionsBibTeXCC BY-SA 4.0
Abstract: Highlights•A practical online/offline two-party SM2 with non-interactive online phase.•Re-sharing technique for optimal computational efficiency in two-party SM2.•Significant performance improvements both in computation and communication.•Proposed scheme outperforms the state-of-the-art two-party ECDSA in performance.•Enhances security and flexibility for Certificate Authority, Blockchain, etc.