Certificateless ring signcryption scheme without paring design
Wenjun Wu · Jisuanji gongcheng yu sheji · 2013
To improving the disadvantage of original signcryption scheme,the existing certificateless signcryption schemes are analyzed and concluded and a new certificateless ring signcryption model without using the bilinear parings is proposed and the designing scheme based on discrete logrithm is presented.Firstly,the characteristics of original ring signcryption scheme are analyzed,and the advantages of original scheme are retained.At the same time,compared with the original scheme,the new scheme greatly improves efficiency because of removing of bilinear pairing.The results show that this scheme not only takes on signcrypter anonymity,security,confidentiality,unforgeability,but also has identity verifiablity and efficientibility.