摘要
自认证密码体制可以实现无公钥证书和密钥托管,代理签密是将代理签名和签密相结合的一种方案。在已有研究的基础上,集成自认证密码体制和代理签密,提出了一种新的基于DLP的自认证代理签密方案,并在有限域上离散对数问题的难解性下,给出了其正确性和安全性证明。
Self-certified cryptosystem realizes the properties of no public key certificate and key-unescrow, proxy signcryption is a scheme that combines the proxy signature and signcryption. By merging the thoughts of self-certified cryptosystem and proxy signcryption, a new self-certified proxy signcryption scheme based on discrete logarithm problem was proposed on the basis of the existing literatures. Under the hardness of discrete logarithm problem in finite field, the new scheme was proved to be correct and secure.
出处
《计算机科学》
CSCD
北大核心
2010年第5期66-67,71,共3页
Computer Science
基金
国家自然科学基金项目(60863006)
教育部科学技术研究重点项目(208148)
甘肃省科技攻关项目(2GS064-AS2-035-03)
青海省重点课程<现代操作系统>建设项目资助
关键词
有限域上离散对数问题
代理签密
可公开验证
自认证密码体制
Discrete logarithms problem in finite field Proxy signcryption Pubfic verifiability Self-certified cryptosystem
