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Server-aided aggregate verification signature: security definition and construction

机译：服务器辅助的聚合验证签名：安全性定义和构造

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摘要

Fast signature verification is extremely desirable in mangy applications, especially for numerous low computation scenarios such as wireless network, RFID. Up to now, more and more techniques have been suggested to decrease the computational overhead. For instance, aggregate signatures have been used for saving the bandwidth by compressing a list of signatures into a single one and sever-aided verification aims at reducing computational load. Therefore, it is interesting to study how to combine these two tricks together, namely server-aided aggregate verification signature, to achieve both short signature length and secure server-aided verification. The contribution of this paper is three-fold. Firstly, we formalise a new security model of server-aided aggregate verification signature scheme (SAAV-Σ) against collusion attacks. Secondly, we propose a concrete server-aided aggregate verification signature scheme-based BGLS signature scheme. Finally, we show that our construction is secure in our model.
机译：快速签名验证在大型应用中非常需要，尤其是对于许多低计算量的方案，例如无线网络，RFID。迄今为止，已经提出了越来越多的技术来减少计算开销。例如，聚合签名已被用于通过将一系列签名压缩为单个签名来节省带宽，并且辅助式验证旨在减少计算量。因此，研究如何将这两个技巧结合在一起，即服务器辅助的聚合验证签名，以实现较短的签名长度和安全的服务器辅助验证，是很有趣的。本文的贡献是三方面的。首先，我们确定了针对共谋攻击的服务器辅助聚合验证签名方案（SAAV-Σ）的新安全模型。其次，我们提出了一种基于服务器的，基于聚集验证签名方案的BGLS签名方案。最后，我们证明我们的构造在模型中是安全的。

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