基于身份的多重签密方案  

Identity-Based Multi-Signcryption Scheme

作　　者：孟涛[1] 张鑫平[1] 孙圣和[1] 

机构地区：[1]哈尔滨工业大学,黑龙江哈尔滨150001

出　　处：《电子学报》2007年第B06期115-117,共3页Acta Electronica Sinica

摘　　要：本文利用椭圆曲线上的双线性对提出一个新的基于身份的多重签密方案,解决以前的传统证书式多重签密方案的证书管理,传递等繁琐问题.并进行了安全性分析,在BDH问题是困难的假设下方案是安全的.签密能够在一个逻辑步骤内同时完成保密和认证两项功能,而其计算量和通信成本都要低于传统的"先签名后加密",在电子商务等方向有很好的应用前景.Signcryption is a cryptographic protocol that combines both the functions of confidentiality and authentication in a logical step, and the computational costs and commuuication overheads should be lower than the traditional signature-then-encryption approach. So signacryption has good prospects in the direction of e-commerce. Based on bilinear pairing on Elliptic Curve, a new multi-signacryption scheme is proposed. The scheme could decrease the cost of building and managing public key infrastructures;the expense of the users＇ management of public-key and their certificates is avoided. We had a safety of analysis, that the proposed scheme is proved to be secure assuming the bilinear Diffie-Hellem problem is hard.

关 键 词：有序多重签密 基于身份的密码系统 双线性对 

分 类 号：TN919.19[电子电信—通信与信息系统]