XML Digital Signature Based On Conic Curve Cryptosystem

XML plays a very important role with its unique characteristics in the network data representation and exchange of information. In order to ensure transport security of the XML documents, relevant agencies developed a series of XML security specifications.Conic curve cryptography is a new public key cryptosystem that people put forward in recent years. Compared with elliptic curve cryptography, Conic curve cryptography has the advantages of simpler calculations, easier achieving encoding and decoding, faster calculating, et al. The results from some scholars show that under the same order, conic curve of the discrete logarithm problem is not a easier problem than elliptic curve.This paper focuses on conic curve public key cryptography, and applies it to the field of XML digital signature.First, this paper researches the basic theory of digital signature and conic curve cryptography, and gives an improved digital signature scheme according to the existing ElGamal type digital signature scheme based on conic curve over the ring Zn. The theoretical proof and experimental results show that the security of the improved digital signature scheme has been further enhanced.Second, this paper applies the improved conic curve digital signature scheme into the field of XML digital signature, designs and implements an application system, including designing the function of the system, analysis of the data flow, designing the system module, designing the algorithm of the basic operation, and the choice of system parameters, et al. Also gives the running results of the program.Finally, the system's security and algorithm efficiency are analyzed and compared. It verifies the effects of the application of the proposed digital signature scheme in the field of XML digital signature. The experimental results show that the application system achieved the expected functionality and effectiveness. System's security and the operating efficiency are improved further. Compared to the original digital signature scheme, the improved scheme is more secure. In the case of the same key length, the conic curve public key cryptography's security is higher than RSA. And compared to elliptic curve public key cryptosystem conic curve has a faster running speed.