新型面向授权子集环签名方案  

A Novel Authorized Subsets Oriented Ring Signature Scheme

作　　者：王明文[1] 张乐[2] 朱清新[1] 卿利[1] 

机构地区：[1]电子科技大学计算机学院,四川成都610054 [2]四川公用信息产业有限责任公司,四川成都610021

出　　处：《电子学报》2007年第5期890-894,共5页Acta Electronica Sinica

基　　金：国家863高技术研究发展计划(No.2005AA114030)

摘　　要：对传统的面向个人环签名方案进行扩展,提出了一个面向授权子集的环签名方案.在方案中,签名子集首先构建一个包含其自身所有成员在内的群组,然后构建一个包含签名子集在内的群组成员的子集集合.环签名是由签名子集中的所有成员合作做出的.验证者可以验证签名是否是由子集集合中的某一个子集所做出的,却无法找出具体的签名子集.在随机问答器模型下,证明了方案是安全的.通过对方案的复杂性分析表明,签名系统是高效的.Extending the ring signature scheme for individual person,a novel ring signature scheme for general subsets of a group is proposed. In the scheme, the members of signing subset firstly construct a group including themselves, then construct a set of subsets including the signing subset,namely the authorized subsets. The signature is generated by co-operation of all members of the signing subset. The verifier can verify whether the signature is generated by one of the authorized subsets,but s/he cannot find out the detailed signing subset. The scheme is proved secure under the random oracle model.And the results of complexity analysis show that the scheme is efficient.

关 键 词：密码学 数字签名 群签名 环签名 授权子集 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]