Blind Signature Schemes Based on ELGamal Signature Equation

In order to improve the ELGamal blind signature scheme,this paper studies the blind signature schemes based on the ELGamal signature equations.Following a summary of the definition and classification standard of blind signature,based on the different signature equations and the assumption of difficulty in solving the discrete logarithm problem on the finite field,we get the corresponding strong blind signature and weak blind signature schemes.It's the first time to analyze the blind properties of the different ELGamal signature equations.Finally we give the blind analysis and security analysis to each blind signature scheme.