Cryptology ePrint Archive: Report 2014/461

Provably secure and efficient certificateless signature in the standard model

Lin Cheng and Qiaoyan Wen and Zhengping Jin and Hua Zhang

Abstract: Certificateless public key cryptography eliminates inherent key escrow problem in identity-based cryptography, and does not yet requires certificates as in the traditional public key infrastructure. However, most of certificateless signature schemes without random oracles have been demonstrated to be insecure. In this paper, we propose a new certificateless signature scheme and prove that our new scheme is existentially unforgeable against adaptively chosen message attack in the standard model. Performance analysis shows that our new scheme has shorter system parameters, shorter length of signature, and higher computational efficiency than the previous schemes in the standard model.

Category / Keywords: public-key cryptography /

Date: received 15 Jun 2014, last revised 19 Jun 2014, withdrawn 19 Jun 2014

Contact author: stonewoods302 at 163 com

Available format(s): (-- withdrawn --)

Version: 20140619:073456 (All versions of this report)

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