|
摘要: |
基于代理签名理论和前向安全签名理论,提出了一个前向安全的强代理签名方案,其安全性建立在求离散对数和模合数求平方根是困难的这两个假设的基础上。此方案同时对代理签名人和原始签名人的权益提供了保护,攻击者即使在第i时段入侵系统,也无法伪造第i时段之前的签名,因而具有较高执行效率和较强的安全性。 |
关键词: 公钥密码学 数字签名 前向安全 离散对数 模合数求平方根 代理签名 |
DOI: |
分类号:TN918.1 |
基金项目:National Grand Fundamental Research 973 Program of China(1998030600) |
|
A Forward Secure Strong Proxy Signature |
TAN Zuo-wen LIU Zhuo-jun
|
Abstract: |
A forward secure strong proxy signature scheme is proposed on the basis of the proxy signature schemes and forward secure schemes.The security of the proposed scheme relies on the difficulty of solving discrete logarithm problems and the difficulty of com |
Key words: public key cryptology,digital signature,forward security,discrete logarithm,square root modulo composites, |