基于身份的代理签名方案  

ID-Based Proxy Signature Scheme from Bilinear Pairings

作　　者：李沛[1] 王天芹[2] 

机构地区：[1]河南农业大学,河南郑州450002 [2]河南大学计算机与信息工程学院,河南开封475004

出　　处：《计算机技术与发展》2011年第5期155-157,162,共4页Computer Technology and Development

基　　金：国家自然科学基金(10671056);许昌学院科研基金(2011B050)

摘　　要：代理签名具有丰富的密码特性,在代理签名中原始签名人可以将签名权利下放给代理签名人,从而将自己从"繁琐"的签名事务中解放出来。随着对双线性映射的研究和应用,人们发现使用双线性映射可以有效简化传统的基于"证书"密钥管理和密钥分发技术。文中以双线性映射和Schnorr签名方案为基础,合理融入代理签名机制,提出一种基于身份的代理签名方案。对新方案进行安全性分析,证明在CDHP问题难解性前提下,具有不可伪造性、密钥依赖性等特性。Proxy singature has rich password characteristics. In the proxy signature, original signer＇ s signature right transferred to proxy signer, thus theirself liberated from ＂trival＂ signature affairs. Along with bilinear map of research and application, people found using bilinear map can effectively simplified traditional ＂certificate＂ based key management and key distribution technology. In this paper, a new proxy is proposed which reasonable into proxy signature mechanism and based on bilinear map and Schnorr signature scheme. Finally on the new scheme, gave a security analyses, and proofed that under the CDHP difficult problem, this scheme has the non-forgeability, key dependence and other properties.

关 键 词：基于身份 双线性映射 代理签名 可证明安全 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]