Computer and Modernization ›› 2009, Vol. 8 ›› Issue (8): 137-139.doi: 10.3969/j.issn.1006-2475.2009.08.038

• 信息安全 • Previous Articles     Next Articles

Provably Secure ID-based Signature Scheme Without Trusted Party

CHEN Hua1,2，CAI Guang-xing1   

  1. 1.School of Science, Hubei University of Technology, Wuhan 430068, China;2.School of Mathematics and Statistics, Wuhan University, Wuhan 430068, China
  • Received:2009-05-07 Revised:1900-01-01 Online:2009-08-21 Published:2009-08-21

Abstract: An efficient IDbased signature scheme without trusted party is proposed, against the problem of key escrow of IDbased signature system. The new scheme could solve the key escrow problem through binding two partially public keys with a same identity. Under the random oracle model, it has been proved secure against existential forgery on adaptively chosen message and ID attack based on the hardness of the computation diffiehellman problem(CDHP). 

Key words: ID-based signature scheme, key escrow, non-trusted party, bilinear parings, random oracle model

CLC Number: