On the Security of a Pairing-Free Certificateless Signcryption Scheme. (7th September 2017)

• Record Type: Journal Article
• Authors: Zhang, Jianhong; Mao, Jian
• Editors: Chen, Liqun
• Is Part Of: Computer journal. Volume 61:Number 4(2018)
• Page Start: 469
• Page End: 471
• Publication Date: 2017-09-07
• Subjects: certificateless signcryption -- unforgeability -- security analysis -- attack -- bilinear pairing; Computers -- Periodicals; 005.1
• DOI: 10.1093/comjnl/bxx081
• Languages: English
• ISSNs: 0010-4620

Abstract

Abstract: Unforgeability is an important security property in signcryption. Recently, Yu et al. proposed a pairing-free and secure certificateless signcryption scheme and demonstrated their scheme was provably secure in the random oracle model. Unfortunately, in this letter, we show their scheme is insecure against the malicious KGC and the malicious sender through proposing two concrete attacks.