### New certificateless signcryption scheme

LI Huige, ZHANG Jianzhong

1. College of Mathematics and Information Science, Shaanxi Normal University, Xi’an 710062, China
• Online:2014-03-01 Published:2015-05-12

### 一种新的无证书签密方案

1. 陕西师范大学 数学与信息科学学院，西安 710062

Abstract: This paper analyses the security of two certificateless signcryption schemes, which all can’t guarantee security. The first certificateless signcryption scheme exists forged attack, which can pass through the proving equation. In addition, the second scheme doesn’t completely satisfy the public verification. Based on these problems, this paper proposes a new certificateless signcryption scheme and analyses the accuracy and safety of this new scheme, which is proved to be safe and guarantees the secrecy and authentication of information.