Threshold proxy re-signature: definition and new constructions. (17th February 2018)

• Record Type: Journal Article
• Authors: Chen, Xi; Liu, Yun; Harn, Lein; Li, Yong; Yao, Ge
• Is Part Of: Journal of the Chinese Institute of Engineers. Volume 41:Number 2(2018)
• Page Start: 141
• Page End: 148
• Publication Date: 2018-02-17
• Subjects: Information security -- cryptography -- secret sharing -- proxy re-signature; Technology -- Periodicals; Engineering -- Periodicals; 620.005
• DOI: 10.1080/02533839.2018.1437362
• Languages: English
• ISSNs: 0253-3839

Abstract

Abstract: The previous threshold proxy re-signature schemes have been mainly constructed with bilinear maps, the implementations of which are much more time-consuming than exponentiation operations. To solve this problem, we propose efficient threshold proxy re-signature schemes which are constructed with El-Gamal signatures. The performance analysis shows that our schemes are more efficient than the existing threshold proxy re-signature schemes. Based on the discrete logarithm problem, our schemes are provable secure in the random oracle model.