Accountable Ring Signatures: A Smart Card Approach
Accountable Ring Signatures: A Smart Card Approach
复制标题
负责任的环签名：智能卡方法
DOI：
10.1007/1-4020-8147-2_18
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
M. Yung
中科院分区：
文献类型：
--
作者：
Shouhuai Xu;M. Yung
环签名是保护签名者隐私的重要原语，同时确保所讨论的签名确实是由某个合格的用户发出的。这个概念可以看作是众所周知的群签名概念的推广。组签名是这样一种签名，验证者可以确定其有效性，但不能确定实际签名者的身份，而实际签名者可以由称为组管理器的指定实体识别。环签名也是这样一种签名，验证者可以确定其有效性，但不能确定实际签名者的身份，而实际签名者确实永远无法被任何一方识别。环签名相对于组签名的一个重要优点是不需要预先指定环或用户组。
Ring signatures are an important primitive for protecting signers’ privacy while ensuring that a signature in question is indeed issued by some qualified user. This notion can be seen as a generalization of the well-known notion of group signatures. A group signature is a signature such that a verifier can establish its validity but not the identity of the actual signer, who can nevertheless be identified by a designated entity called group manager. A ring signature is also a signature such that a verifier can establish its validity but not the identity of the actual signer, who indeed can never be identified by any party. An important advantage of ring signatures over group signatures is that there is no need to pre-specify rings or groups of users.