Cryptology ePrint Archive: Report 2016/692

Cryptanalysis and improvement of certificateless aggregate signature with conditional privacy-preserving for vehicular sensor networks

Jiguo Li, Hong Yuan and Yichen Zhang

Abstract: Secure aggregate signature schemes have attracted more concern due to their wide application in resource constrained environment. Recently, Horng et al. [S. J. Horng et al., An efficient certificateless aggregate signature with conditional privacy-preserving for vehicular sensor networks, Information Sciences 317 (2015) 48-66] proposed an efficient certificateless aggregate signature with conditional privacy-preserving for vehicular sensor networks. They claimed that their scheme was provably secure against existential forgery on adaptively chosen message attack in the random oracle model. In this paper, we show that their scheme is insecure against a malicious-but-passive KGC under existing security model. Further, we propose an improved certificateless aggregate signature.

Category / Keywords: public-key cryptography /

Date: received 11 Jul 2016

Contact author: ljg1688 at 163 com

Available format(s): PDF | BibTeX Citation

Version: 20160713:134337 (All versions of this report)

Short URL: ia.cr/2016/692

Discussion forum: Show discussion | Start new discussion


[ Cryptology ePrint archive ]