对几个盲签名方案的链接攻击的分析  

Cryptanalysis of Linkability Attacks on Some Blind Signature Schemes

作　　者：许昊[1] 亢保元[1] 牛永正 

机构地区：[1]天津工业大学计算机学院,天津300387

出　　处：《小型微型计算机系统》2014年第11期2473-2476,共4页Journal of Chinese Computer Systems

基　　金：国家重点基础研究发展计划项目(2007CB311003)资助;国家自然科学基金项目(61073117;61175046)资助;安徽省自然科学基金项目(11040606M145)资助;安徽大学青年科研基金项目(KJQN1118)资助

摘　　要：盲签名使得签名的接收者在不向签名者透露任何消息内容的情况下,获得签名者对消息的签名.由于盲签名具有盲性和不可链接性,能有效地保护用户的隐私,盲签名被广泛应用于匿名电子支付、匿名电子投票等系统.为适应不同的需求,国内外学者提出各种不同的盲签名方案.最近,文献[7-9]通过对文献[10-14]提出的盲签名方案的安全性进行分析,指出这些方案不能抵抗链接攻击.本文分析表明,文献[7-9]提出的链接攻击是无效的,且文献[10-14]的盲签名方案仍满足不可链接性.Blind signature allows a recipient to obtain a signature on a message without revealing anything about the message to the signer. The blind signature can protect the user＇ s private due to its blindness and unlinkability, then blind signature is utilized in elec- tronic payment, electronic vote and other anonymous system widely. A great deal of researchers proposed many blind signature schemes in order to different requirements. Recently, according to analysis the security of the blind signature schemes put forward in thesis [ 10-14 ], thesis [ 7-9 ] point out that these schemes do not resist linkability attacks. Analysis showed that these linkability attacks presented in thesis [7-9 ] are unvalid, and these blind signature schemes still satisfy the property of unlinkability.

关 键 词：密码学分析 盲签名 不可链接性 链接攻击 双线性对 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]