摘要
大多数代理重签名方案需要复杂的双线性对运算,无法适用于计算能力较弱的低端计算设备。为了提高签名验证算法的计算性能,提出了一个可证明安全的双向服务器辅助验证代理重签名方案,能有效抵抗合谋攻击和选择消息攻击。分析结果表明,新方案减少了复杂的双线性对运算,提高了签名验证速度,在效率上优于同类代理重签名方案。
Most proxy re-signature schemes require expensive bi-linear pairing operations, which are not suitablefor low-power devices. To improve the performance of signature verification algorithm, a bidirectional sever-aidedverification proxy re-signature is proposed. This scheme can effectively resist collusion attacks and adaptive chosenmessage attacks. Analysis results show that the proposed scheme reduces computation cost of pairing operation, andit greatly reduces speeds up signature verification. The proposed scheme is more efficient than the existing proxyre-signature schemes.
出处
《天水师范学院学报》
2015年第5期4-7,共4页
Journal of Tianshui Normal University
关键词
服务器辅助验证签名
代理重签名
双线性对
合谋攻击
sever-aided verification signature
proxy re-signature
bilinear pairing
collusion attack
