前向安全的指定验证人代理多重签名方案  

A Forward Secure Designated-Verifier Proxy Multi-Signature Scheme

作　　者：左为平[1] 刘云芳[1] 王三福[1] 杨晓亚[1] 

机构地区：[1]天水师范学院数学与信息科学学院,甘肃天水741000

出　　处：《数学的实践与认识》2010年第11期119-123,共5页Mathematics in Practice and Theory

基　　金：天水师范学院中青年教师科研资助项目(TSA0936)

摘　　要：基于有限域上离散对数难解问题和强RSA假设,提出了一个前向安全的指定验证人代理多重签名方案.在方案中,代理签名人不仅可以代表多个原始签名人生成指定验证人的代理多重签名,确保只有原始签名人指定的验证人可以验证代理多重签名的有效性;而且在该方案中,代理多重签名是前向安全的,即使代理签名人当前时段的代理多重签名密钥被泄漏,敌手也不能伪造此时段之前的代理多重签名,以前所产生的代理多重签名依然有效.A forward secure designated-verifier proxy multi-signature scheme is proposed, based on the difficulty of solving discrete logarithm problems and the strong RSA assumption. In the scheme, the proxy signer can generate a valid proxy multi-signature on behalf of original signer groups for designated-verifier, only the designated-verifier can verify the proxy multi- signature; furthermore, proxy multi-signature is forward secure, even if an adversary has gotten the current proxy signers＇ key, it could not forge proxy multi-signature pertaining to the past, that is, previous generated proxy multi-signature is still valid.

关 键 词：前向安全 强RSA假设 代理多重签名 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]