An efficient anonymous credential system

被引：0
|
作者：
Akagi, Norio [1 ]
Manabe, Yoshifumi [1 ]
Okamoto, Tatsuaki [1 ]
机构：
[1] Kyoto Univ, Grad Sch Informat, Dept Social Informat, Kyoto 6068501, Japan
来源：
FINANCIAL CRYPTOGRAPHY AND DATA SECURITY | 2008年 / 5143卷
关键词：
D O I：
暂无
中图分类号：
TP301 [理论、方法];
学科分类号：
081202 ;
摘要：
This paper presents an efficient anonymous credential system that includes two variants. One is a system that lacks a credential revoking protocol, but provides perfect anonymity-unlinkability and computational unforgeability under the strong Diffic-Hellman assumption. It is more efficient than existing credential systems with no revocation. The other is a system that provides revocation as well as computational anonymity-unlinkability and unforgeability under the strong Diffie-Hellman and decision linear Diffie-Hellman assumptions. This system provides two types of revocation simultaneously: one is to blacklist a user who acted wrong so that he can no longer use his credential, and the other is identifying a user who acted wrong from his usage of credential. Both systems are provably secure under the above-mentioned assumptions in the standard model.
引用
收藏
页码：272 / 286
页数：15
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