An improved proxy signature scheme

Several strong proxy signature schemes are analyzed in this paper. Since in some schemes signature verification stages without verification of the public key will easily lead to forgery attack, so the security mechanism is deficient and requires revision. Through the analysis of existing security schemes, a new proxy signature scheme is proposed, with security strengthened by the addition of public key authentication mechanism, which can effectively resist forgery attack The scheme proposed is able to make up the shortcomings of the existing schemes.