一种高效的基于身份的签密方案

An Efficient ID-based Signcryption Scheme

签密能够在一个合理的密码协议中同时完成数字签名和公钥加密两种功能,减少了通信成本.利用椭圆曲线的双线性对性质,提出了一种基于身份的签密方案.该方案同时满足签密方案所具有的机密性、不可伪造性、前向安全性,而且能抵抗信息接收方的欺骗攻击.通过分析和比较,该方案具有很好的安全性和较高的效率.

Signcryption can combine both the functions of digital signature and public key encryption in a logical cryptography protocol,at lower computational costs and communication. A new efficient identity-based signcryption scheme was proposed by characteristics of bilinear map of elliptic curve. This scheme can satisfy the confidentiality,unforgeability and forward security required by signcryption.What＇s more,the scheme is secure against dishonest recipient. This scheme is also very efficient and secure after analyzing and being compared with other schemes.