signature=cc8794ac0daf0cf10d246cd855f4a91c,Efficient short group signature with IND-CCA2 full-anonym...

景风

于 2021-05-29 11:56:27 发布

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文章标签： signature=cc8794ac0daf0cf10d246cd855f4a91c

该文提出了一种新的零知识协议，该协议基于DDH、TCRv、KEA3和SDH假设上的改进Cramer-Shoup加密。利用此协议构建了一个在BMW模型下可证明安全的短群签名方案，具备IND-CCA2全匿名性，签名长度仅为1193比特。与其他相关工作相比，这种方法在效率和群签名长度上具有优势，但假设更为强大。

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摘要：

This paper presented a new zero-knowledge protocol for SDH, which was based on improved Cramer-Shoup encryption from DDH, TCRv, KEA3 assumption and SDH assumption. Using this protocol as a building block, constructed a new short group signature, which was provable secure in the BMW model, the scheme was of IND-CCA2-full-anonymity, and the signature was only 1 193 bit in size. Compared with other related works, this method was of higher efficiency and shorter size of group signature at the cost of strong assumptions.

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