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学术报告《Introduction to Threshold ECDSA Signature》

发布日期:2022/07/08 点击量:

题 目:Introduction to Threshold ECDSA Signature

主讲人:薛海洋

时 间:2022/07/11 09:00-10:30

地 址:腾讯会议ID: 329-152-012


Abstract:

Threshold ECDSA signatures have received much attention due to their widespread deployment in cryptocurrencies. In this talk, I will introduce the constructions of threshold ECDSA. Then I will present our online-friendly two-party ECDSA, which has a lightweight online phase and only needs a single multiplicative-to-additive function in the offline phase. It is constructed by a novel design of a re-sharing of the secret key and a linear sharing of the nonce. Our scheme improves previous protocols based on either oblivious transfer or homomorphic encryption. At last, I also want to talk about our recent progress in building efficient multiplicative-to-additive functions.


主讲人简介:Haiyang Xue is a research assistant professor at the University of Hong Kong. Before that, He was a cryptography researcher at IIE, Chinese Academy of Sciences. His research is about theoretical cryptography and its applications, including post-quantum cryptography, authenticated key exchange, zero-knowledge proof, etc. He is the (co-)designer of LAC (round 2 candidates of NIST PQC standardization) and SIAKE (second prize winner of the Chinese post-quantum cryptography competition). His works were published in ACM CCS, ASIACRYPT, RSA, etc.



邀请人:魏普文

审核人:魏普文


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