Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2008, Vol. 31 ›› Issue (6): 18-21.doi: 10.13190/jbupt.200806.18.201

• Papers • Previous Articles     Next Articles

Efficient Certificateless Strong Proxy Signature Scheme

DU Hong-zhen1.2, WEN Qiao-yan1, LI Wen-min1, JIN Zheng-ping1   

  1. (1. State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China; 2. Department of Mathematics, Baoji University of Arts and Sciences, Baoji 721007, China)
  • Received:2007-11-09 Revised:2008-09-09 Online:2008-12-31 Published:2008-12-31
  • Contact: DU Hong-zhen

Abstract:

We first formalize the definition and the security model of certificateless strong proxy signatures (CLSPS), and then propose a novel CLSPS scheme from bilinear pairings. It proves that our CLSPS scheme satisfies all the requirements of strong proxy signatures in certificateless public key cryptography. Furthermore, our scheme is more efficient than the existing CLSPS schemes because it requires general cryptographic hash functions instead of MapToPoint function which is inefficient, and the signing algorithm and the verification algorithm online altogether require one scalar multiplication, two exponentiations and one pairing computation.

Key words: certificateless public key cryptography, certificateless strong proxy signature, bilinear pairings

CLC Number: