Earticle

초록

영어

Proxy re-encryption (PRE) can be classified as single-hop PRE and multi-use PRE according to the times which the ciphertext is transformed. Finding a unidirectional, multi-use, and chosen ciphertext attack (CCA) secure PRE is presented as an open problem by Canetti et al. Wang claimed to resolve this problem by proposing the first multi-use CCA-secure unidirectional PRE scheme. But Zhang et al. have shown their proposal is not CCA-secure by giving concrete attacks. In this paper, we propose an improvement for Wang-Multi-Use-PRE to resist Zhang’s attack. But we also found that different with single-hop PRE, multi-use PRE without randomize encrypt key in its re-encryption algorithm could be vulnerable to attack. According to this principle we find a new type attack to multi-use CCA-secure PRE named proxy bypass attack. Then we give concrete attacks on Wang-Multi-Use-PRE scheme. This attack is also effective for other multi-use scheme.

목차

Abstract
 1. Introduction
 2. Framework of Multi-Use-PRE Scheme
  2.1. Multi-Use-PRE Scheme Definition
  2.2. CCA-security of Multi-Use-PRE Scheme
  2.3 Reviews of Wang-Multi-Use-PRE scheme
 3. An Improvement For Wang-Multi-Use-PRE to Resist Zhang’s Attack
 4. Proxy Bypass Attack
  4.1 The Proxy Bypass Attack To Wang-Multi-Use-PRE
  4.2 Discussions
 5. Conclusions
 References

키워드

저자

• Yi Cai [ School of Computer Science and Engineering, South China University of Technology, Guangzhou 510641, P. R. China, School of Computer Engineering, Guangzhou College of South China University of Technology, Guangzhou 510800, P. R. China ]
• Deyu Qi [ School of Computer Science and Engineering, South China University of Technology, Guangzhou 510641, P. R. China ]

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