摘要
利用无证书公钥密码体制,在代理重签名机制的基础上,首次提出了一个有效的无证书代理重签名方案。方案中解决了已提出的代理重签名方案无法消除基于身份公钥密码体制中固有的私钥托管问题,以及基于PKI的传统公钥密码体制中的证书以及证书管理带来的额外开销。为了避免随机预言模型在具体实现时可能不安全这一局限性,采用标准模型证明方案的安全性。
Using certificateless public key cryptography,based on the proxy re-signature scheme,a valid certificate of proxy re-signature scheme was proposed.Scheme has solved eliminate Key escrow problem in identity-based public-key cryptography unsolved by proxy re-signature scheme,as well as PKI-based certificates in public key cryptography and additional cost of certificate management.In order to avoid insecurity of the concrete realization of the random oracle model,standard model was used to prove the safety of the scheme.
出处
《农业网络信息》
2012年第11期46-49,49,共4页
Agriculture Network Information
关键词
无证书公钥密码体制
代理重签名
标准模型
certificateless of public-key cryptosystem
proxy re-signatures
standard model
