Earticle

초록

영어

Aggregate signature can combine n signatures on n messages from n users into single signature, and the verifier should be convinced by the aggregate signature that n users indeed sign n messages. Since aggregate signature can greatly reduce the length of total signature and the cost of verification, it is widely used in environments with low bandwidth communication, low storage and low computability. Recently, Liu et al. [H Liu, S Wang, M Liang and Y Chen, “New Construction of Efficient Certificateless Aggregate Signatures”, International Journal of Security and Its Applications Vol.8, No.1 (2014), pp. 411-422] proposed an efficient certificateless aggregate signature scheme which is proven existentially unforgeable against adaptive chosen-message attacks. Unfortunately, Liu et al.’s new certificateless signature scheme is insecure. In this paper, giving concrete and simple attacks, we demonstrate that type II adversary key generation center can make ordinary-passive attack and malicious-active attack to forge legal certificateless signatures and certificateless aggregate signatures on any messages. Furthermore, we analyze possible reasons why key generation center succeeds in ordinary-passive attack and malicious-active attack.

목차

Abstract
 1. Introduction
 2. Preliminaries
  2.1. Bilinear Pairing
  2.2. Computational Diffie–Hellman Problem
  2.3. Component of Certificateless Aggregate Signature Scheme
  2.4. Adversaries Model of Certificateless Aggregate Signature
 3. Review of Liu et al.’s Certificateless Aggregate Signature Scheme
 4. Security-Analysis of Liu et al’s Scheme
 5. Analysis of Possible Reasons
 6. Conclusions
 Acknowledgments
 References

키워드

저자

• Yulei Zhang [ College of Computer Science and Engineering, Northwest Normal University Lanzhou, 730070, P.R. China ]
• Caifen Wang [ College of Computer Science and Engineering, Northwest Normal University Lanzhou, 730070, P.R. China ] corresponding author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Security and Its Applications

• 간기

  격월간

• pISSN

  1738-9976

• 수록기간

  2008~2016

• 등재여부

  SCOPUS

• 십진분류

  KDC 505 DDC 605