双线性群上的改进VLR群签名方案  

Improved VLR Group Signature Scheme in Bilinear Groups

作　　者：康昌春[1] KANG Chang-chun

机构地区：[1]山东省肿瘤防治研究院信息中心,山东济南250117

出　　处：《信息技术与信息化》2017年第7期71-73,76,共4页Information Technology and Informatization

基　　金：国家高技术研究发展计划(863计划)项目(编号:2015AA020106);山东省自然科学基金项目(编号:ZR2012HL09);山东省医药卫生科技发展计划项目(编号:2015WSA18068)

摘　　要：当前,实用的群签名方案必须提供支持成员身份动态废除的有效机制,即可以在不影响其他成员的情况下使某个成员的合法身份作废。本文对支持验证者本地废除的Zhou-Lin群签名方案做出改进,获得了效率更高的签名算法,并结合批验证技术提出更为高效的验证算法。在随机预言模型下,新方案可证满足可追踪性、不可陷害性和自我匿名性。此外,用户在签名产生过程中无需执行对运算。同时,在采用批验证技术后,可以显著减少验证者端的对运算次数。At present,practical group signature schemes require to provide an effective mechanism to support the dynamic abolition of membership,which means to invalidate certain group member’s legal identity without affecting other members.In this paper,the Zhou-Lin group signature scheme was improved with a more efficient signature algorithm.Moreover,a more efficient verification algorithm supporting batch verification was also provided.In the random oracle model,the new scheme can be proved to satisfy the properties of traceability,nonframing and self-anonymity.In addition,the user does not have to perform expensive pairing computations during the generation of the signature.In addition,the verifier’s computation cost can be significantly reduced by using batch verification techniques.

关 键 词：群签名 成员废除 验证者本地废除 批验证 

分 类 号：TN918.91[电子电信—通信与信息系统]