无可信PKG的基于身份的批量群签名

作者：陈燎罕，张瑞林 日期：2009-12-30/span> 浏览：3440 查看PDF文档

无可信PKG的基于身份的批量群签名

陈燎罕，张瑞林
（浙江理工大学 信息与电子学院，浙江 杭州 310018）

摘要：针对密钥托管困难的问题，对已有的基于身份的群签名的密钥生成算法及签名方案进行了改进，提出了无可信密钥生成中心（PKG）的基于身份的批量群签名方案，其主要利用了椭圆曲线上的双线性映射及批量签名的思想。研究结果表明，与已有相关文献相比，该方案在效率、安全性等方面都有了明显的提高。
关键词：基于身份；双线性对；代理签名；批量签名；代理批量签名；密钥生成中心
中图分类号：TP309文献标识码：A文章编号：1001-4551(2009)11-0074-03

IDbased batch group signature without trusted PKG
CHEN Liaohan, ZHANG Ruiling
(Faculty of Informatics & Electronics, Zhejiang SciTech University, Hangzhou 310018, China)
Abstract: Aiming at the difficulty of key escrow problem, a new efficient IDbased batch group signature without trusted private key generator(PKG) was proposed by improving an IDbased group signature scheme. The bilinear map and the idea of batch signature were used. The research results indicate that the efficiency and security of this method are also better than the existing ones.
Key words: identitybased; bilinear paring; group signature; batch signature; group batch signature; private key generator(PKG)
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