一个基于双线性映射的前向安全门限签名方案

A Forward Secure Threshold Signature Scheme from Bilinear Pairing

将前向安全的概念引入到基于双线性映射的门限签名方案中,提出了一个基于双线性映射的前向安全的门限签名方案.该方案将签名密钥分散到签名成员集合中,采用各成员部分密钥前向更新的方式实现了签名密钥的前向更新,增强了签名密钥的安全性,使得签名方案具有前向安全性.另外,由于部分密钥具有前向更新的特性,从而方案有效防止了移动攻击.对该方案的安全性进行了分析,分析表明,该方案是安全、有效的.

A forward secure threshold signature scheme from bilinear pairing is proposed by combining the concept of forward security with threshold signature from bilinear pairing. In the scheme proposed the signature key is distributed into the whole group and is updated by means of updating partial keys. So the security of the signature key is enhanced and the scheme has the characters of forward security. Furthermore, for the character of partial keys-update, the scheme can prevent the mobile adversaries. The security of the scheme is also analyzed. It is shown that the proposed scheme is secure and effective.