Research Of Digital Signcryption Based On Elliptic Curve

The information security has become more and more crucial with the development of computer and network, technologies.The digital signature is one of key techniques in information security,especially in the authentication, data integrity,and non-repudiation. It has been widely used in military, communication and e-commerce,etc.State of digital signature and convertional algorithm are firstly discussed in this paper based on reading many literatures,then digital signcryption is mostly studied.The following is our main creative research works:(1) We study convertional algorithm of digital signature,especially based on the elliptic curve cryptosystem of digital signature.We present a new signcryption scheme with the specified receiver.Confidentiality,authentication, integrality and non-repudiation are all advantages of the scheme,especially the scheme doesn't operate model inversion so that makes operation accelerate.(2) We study the existing multi-signature and propose a new multi-signcryption model based on ECC .The signed message can be reverted only by appointed receiver because of its orientability in the new model.At the same time various encryptions can be chosen flexibly in the model so that it has been widely used in e-commerce and other fields.(3) We propose a safe testament protocol in internet based on multi-signcryption model.The protocol can protect privacy of promiser and prevent anyone revealing messages.And it is a safe,efficacious,simple,practical protocol.Finally,the author reviews the whole work and gives self-experience in research into digital signature.This paper makes an outlook for digital signature further research.