A Provably Secure Threshold Ring Signature Scheme in Certificateless Cryptography

摘要：

Ring signature is a kind of group-oriented signature. It allows a member of a group to sign messages on behalf of the group without revealing his/her identity. Certificateless public key cryptography was first introduced by Al-Riyami and Paterson at Asiacrypt 2003. In certificateless cryptography, it does not require the use of certificates to guarantee the authenticity of users public keys. Meanwhile, certificateless cryptography does not have the key escrow problem, which seems to be inherent in the identity-based cryptography. In this paper,we introduce the notion of threshold ring signature into certificateless public key cryptography and propose a concrete certificateless threshold ring signature (CLT-Ring) scheme. The security models of certificateless threshold ring signature are also formalized. The new scheme is provably secure in the random oracle model.

关键词： Threshold ring signature Certificateless cryptog-raphy Provable security Random oracle model

作者: Huaqun Wang Shengju Han

作者单位: School of Information Engineering,Dalian Ocean University,Dalian, China Key Laboratory of Network Se School of Information Engineering,Dalian Ocean University,Dalian, China

会议类型: 国际会议

会议名称: 2010 International Conference of Informationa Science and Management Engineering(2010年信息科学与管理工程国际学术会议 ISME 2010)

会议地点: 西安

会议语种:英文

页码: 105-108

在线出版日期: 2010-08-07（万方平台首次上网日期，不代表论文的发表时间）