Efficient multiplicative-to-additive function from Joye-Libert cryptosystem and its application to threshold ECDSA

• Main Authors: XUE, Haiyang, AU, Ho Man, LIU, Mengling, CHAN, Yin Kwan, CUI, Handong, XIE, Xiang, YUEN, Hon Tsz, ZHANG, Chengru
• Format: text
• Language: English
• Published: Institutional Knowledge at Singapore Management University 2024
• Subjects: Multiplicative-to-Additive function; Joye-Libert cryptosystem; Threshold ECDSA; Zero-knowledge proof; Information Security
• Online Access: https://ink.library.smu.edu.sg/sis_research/9187; https://ink.library.smu.edu.sg/context/sis_research/article/10192/viewcontent/3576915.3616595.pdf
• Institution: Singapore Management University

Threshold ECDSA receives interest lately due to its widespread adoption in blockchain applications. A common building block of all leading constructions involves a secure conversion of multiplicative shares into additive ones, which is called the multiplicative-to-additive (MtA) function. MtA domina...