高效的可追踪的基于ID的签名方案  

Efficient traceable identity-based signature scheme

作　　者：杜红珍[1,2] 温巧燕[2] 

机构地区：[1]宝鸡文理学院数学系,陕西宝鸡721013 [2]北京邮电大学网络与交换技术国家重点实验室,北京100876

出　　处：《通信学报》2009年第8期56-61,共6页Journal on Communications

基　　金：国家自然科学基金资助项目(60873191;60821001);宝鸡文理学院基金资助项目(ZK08102)~~

摘　　要：密钥托管问题是基于ID的数字签名的主要缺陷,为了解决该问题,提出了可追踪的基于ID的签名(T-IBS,traceable ID-based signature)的定义及安全模型,并构造了一个不需要双线性对的T-IBS方案,在随机预言机模型与椭圆曲线离散对数假设下该方案是可证安全的。与已有的无密钥托管的签名方案相比,该方案的签名算法只需要一个加法群上的标量乘运算,而验证算法仅需3个标量乘运算,所以是目前效率最高的方案。The inherent key escrow problem is a main disadvantage in identity-based signature schemes. The concept and security model of traceable identity-based signature （T-mS） was introduced which was a new approach to mitigate the key escrow problem in identity-based signature schemes. Moreover, a T-IBS scheme without pairing was presented and the security of the provided scheme was provided under the elliptic curve discrete logarithm assumption and the random oracle model. Compared with the existing schemes without suffering from key escrow, the scheme is the most efficient scheme and the signing algorithm needs oniy one scalar multiplication in the additive group while the reverse operation requires only three scalar multiplications.

关 键 词：基于身份的密码学 可追踪的基于ID的签名 椭圆曲线离散对数问题 密钥托管 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]