Digital Signature and Schnorr Blind Signature Based on Conic Curves
Zichen Li · Computer Technology and Development · 2008
The parameters selection in public-key cryptosystem based on conic curve can affect its secutity.In order to construct a secure public-key cryptosystem based on conic curve in finite filed Fp,the reasonable parameters must be chosed.In this paper,a public-key cryptosystem based on conic curve in finite filed Fp was analyzed,pointing out the security based on the difficulty of discrete logarithm on conic curve and the parameters selection affect its security,the parameters selection else was suggested.Purpose a digital signature scheme based on conic curve and Schnorr blind signature scheme's conic analog was given in this paper.Finally,else analyzed the security and efficiency of the scheme,proving that the scheme is secure and efficient.