Study on signature schemes based on zero-knowledge proof

Abstract

Digital signature has been a basal means of identity authentication in era of network information.To improve the security of the digital signature schemes based on zero-knowledge proof technology,the problem of signature forgery by the signer in digital signature schemes based on the zero-knowledge concept is studied,the potential problem of these schemes are analyzed,a modified scheme for obtaining against such forgery without any increase of computation complexity is proposed,the feasibility,security and computation complexity of the modified scheme is concretely analyzed.