An Analysis and Improvement on Digital Signature Scheme
Dong Qiaocu · 2015
This paper,first,analyzes Huang Shuang et al.'s some bilinear pairings encryption systems,which includes public-key encryption system based on DBPE,digital scheme based on Gentry IBE chameleon,and IBE scheme based on BB04 digital signatures.Then it points out that the digital scheme,which is based on Gentry IBE chameleon,has serious defects and vulnerability.Attackers can replace original public keys with new public keys to construct any signature including necessary information,thus threaten the signer's legitimate rights and interests.To solve the problem,this paper puts forward an improved scheme,which can effectively against such attacks.