Earticle

초록

영어

In an identity-based proxy re-encryption scheme, a semi-trusted proxy can convert a ciphertext under Alice’s public identity into a ciphertext for Bob. The proxy does not know the secret key of Alice or Bob, and also does not know the plaintext during the conversion. In identity-based proxy re-encryption, the collusion of the proxy and a delegatee may result in the decryption of ciphertext for delegator. In this paper, we present a new scheme which can avoid the collusion of proxy and delegatee. Our scheme improves the scheme of Chu and Tzeng while inheriting all useful properties such as unidirectionality and non-interactivity. In our scheme, we get the security by using added secret parameter and change the secret key and re-encryption key. Our sheme is secure against Chosen-Ciphertext Attack (CCA) and collusion attack in the standard model.

목차

Abstract
 1. Introduction
 2. Preliminaries
  2.1 Bilinear groups
  2.2 The Identity-based Proxy Re-encryption
  2.3 Decisional Bilinear Diffie-hellman Assumption
 3. New Identity-based Proxy Re-encryption
  3.1 Analysis of Collusion Attack in [9]
  3.2 New IB-PRE Algorithms
  3.3 Correctness
  3.4 Security
  3.5 Comparison
 4. Conclusions
 Acknowledgement
 References

키워드

저자

• JunJie Qiu [ Department of Ubiquitous IT, Graduate School of Dongseo University, Busan, Korea, Weifang University of Science & Technology, Weifang, China ]
• JungBok Jo [ Department of Ubiquitous IT, Graduate School of Dongseo University, Busan, Korea ]
• HoonJae Lee [ Department of Ubiquitous IT, Graduate School of Dongseo University, Busan, Korea ] 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