强前向安全的提名多代理签名方案

摘要

According to the security defect of forward secure technology which an attacker can forge signature at this stage and later stage after he obtains the ith period signature key. Combining forward secure and nominative signature with multi-proxy signature, a strong forward secure nominative multi-proxy signature scheme is proposed using hash chain. Its correctness and security analysis prove that the new scheme has strong forward secure property,and proxy signature right is shared by multi-proxy signers and only nominative verifier can check proxy signature.%针对前向安全技术存在攻击者在得到第i周期的私钥后,可以伪造本阶段和以后阶段签名的缺陷,将强前向安全技术、提名思想与多代理签名理论结合,利用Hash函数叠加,提出一个强前向安全的提名多代理签名方案.对其正确性和安全性的分析结果表明,该方案不仅具有强前向安全性,还具有多人分享代理权和提名验证人验证签名的特性.