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.
出处
《电子学报》
EI
CAS
CSCD
北大核心
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)
关键词
密码学
数字签名
群签名
环签名
授权子集
cryptography
digital signature
group signature
ring signature
authorized subset