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Strongly secure group signature scheme

机译:高度安全的组签名方案

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Group signature schemes are fundamental cryptographic tools, in which messages are allowed to be signed anonymously. Full-traceability and full anonymity are two important security requirements for group signatures. Response to the misapplication, the group manager is able to revoke the full anonymity. The group joining protocol is a crucial ingredient of a group signature scheme, if devised carefully, group manager's forgery would be prevented. This paper presents a new efficient group signature scheme with a simple joining protocol which possesses the properties of full-traceability and full anonymity. The security of our new construction is based on the DCR assumption, strong RSA assumption, and collision resistant hash functions, which is proved in the random oracle model. Moreover, the signature length of our scheme is very short. Hence it is an efficient short group signature scheme with efficient concurrent join.
机译:组签名方案是基本的加密工具,其中允许对消息进行匿名签名。完全可追溯性和完全匿名性是组签名的两个重要安全要求。针对不当使用,组管理员可以撤消完全匿名的权限。小组加入协议是小组签名方案的关键组成部分,如果精心设计,将可以防止小组经理的伪造。本文提出了一种新的有效的具有简单加入协议的组签名方案,该方案具有完全可追溯性和完全匿名性。我们新结构的安全性基于DCR假设,强RSA假设和抗冲突哈希函数,这在随机预言模型中得到了证明。而且,我们方案的签名长度很短。因此,这是一种具有有效并发连接的有效短组签名方案。

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