一种高效的无证书多重签名方案

Efficient certificateless multi-signature scheme

为了满足多个人对同一份文件签名的高效性,将无证书密码体制与多重签名方案相结合,提出一种高效的无证书多重签名方案。该方案有效地削弱了可信第三方的权力,并且被证明了在适应性选择消息攻击下是存在性不可伪造的,其安全性基于CDH问题的困难假设。与现有方案相比,该方案需要计算的双线性对计算次数少,降低了系统开销。

In order to meet the high efficiency of the multi-signature,by combining certificateless cryptosystem with the multi-signature scheme,this paper proposed an efficient certificateless multi-signature scheme.The scheme was weaken the power of the trusted third party and proved existing unforgeability under the adaptive chosen message attack.The security of the scheme was based on the fact that computational Diffie-Hellman problem was hard.Compared with existing schemes,the scheme need calculate less bilinear pairing and reduce the system costs.