Cryptanalysis on Two Certificateless Signature Schemes

Authors

  • Futai Zhang 1. School of Computer Science and technology Nanjing Normal University, Nanjing 210046, P.R. China, and 2. Jiangsu Engineering Research Center on Information Security and Privacy Protection Technology Nanjing 210046, P.R. China
  • Sujuan Li 1. School of Computer Science and technology Nanjing Normal University, Nanjing 210046, P.R. China, and 2. Nanjing University of Technology Nanjing 210037, P.R. China
  • Songqin Miao 1. School of Computer Science and technology Nanjing Normal University, Nanjing 210046, P.R. China, and 2. Jiangsu Engineering Research Center on Information Security and Privacy Protection Technology Nanjing 210046, P.R. China
  • Yi Mu Centre for Computer and Information Security Research School of Computer Science and Software Engineering University of Wollongong NSW 2522, Australia
  • Willy Susilo Centre for Computer and Information Security Research School of Computer Science and Software Engineering University of Wollongong NSW 2522, Australia
  • Xinyi Huang Centre for Computer and Information Security Research School of Computer Science and Software Engineering University of Wollongong NSW 2522, Australia

Keywords:

certificateless cryptography, certificateless signature, public key replacement, universal forgery

Abstract

Certificateless cryptography has attracted a lot of attention from the research community, due to its applicability in information security. In this paper, we analyze two recently proposed certificateless signature schemes and point out their security flaws. In particular, we demonstrate universal forgeries against these schemes with known message attacks.

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Published

2010-11-01

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