摘要
代理签名是一种特殊的数字签名,它是指当某个签名人(原始签名人)由于某种原因不能签名时,将签名委托给他人(代理签名人)替代自己行使签名权。普通的代理签名算法有一个严重的缺陷:一旦签名密钥泄露,以前用该密钥签名的所有文档都失效。将前向安全理论引入到代理签名中,即使代理签名密钥泄露,以前时间段的代理签名仍然有效。同时,在本文中给出了代理签名系统模型,并给出模拟实现。
Proxy signature is a special digital signature. It allows a signatory, called an original signer, to delegate his signing capability to another called a proxy signatory, to create a signature on behalf of him whom can not sign a message for some reason. Common proxy signature has a serious defect： once key for signature disclosed, document signed by former key for signature is invalid .Therefore, in this paper, theory of forward-security be introduced into proxy signature, although key for signature is disclosed, former proxy signature is valid .And, in this paper, system model of proxy signature is given. Finally, an analog implementation is described.
出处
《芜湖职业技术学院学报》
2005年第4期14-16,共3页
Journal of Wuhu Institute of Technology
关键词
前向安全
代理签名
代理签名系统实现
Forward-security
Proxy signature
Implementation of System for Proxy signature.
