On Constructing Certificateless Proxy Signature from Certificateless Signature  

作　　者：万中美 来学嘉 翁健 洪璇 龙宇 贾巍巍 

机构地区：[1]Department of Computer Science and Engineering,Shanghai Jiaotong University,Shanghai 200240,China [2]College of Science,Hohai University,Nanjing 210098,China [3]Department of Computer Science,Jina University,Guangzhou 510632,China

出　　处：《Journal of Shanghai Jiaotong university(Science)》2008年第6期692-694,共3页上海交通大学学报（英文版）

基　　金：the National Natural Science Foundation of China (Nos. 60573032, 60773092, 90604036,90704004)

摘　　要：In proxy signature schemes, an original signer A delegates its signing capability to a proxy signer B, in such a way that B can sign message on behalf of A.The recipient of the final message verifies at the same time that B computes the signature and that A has delegated its signing capability to B.Recently many identity-based(ID-based) proxy signature schemes have been proposed, however, the problem of key escrow is inherent in this setting.Certificateless cryptography can overcome the key escrow problem.In this paper, we present a general security model for certificateless proxy signature scheme.Then, we give a method to construct a secure certificateless proxy scheme from a secure certificateless signature scheme, and prove that the security of the construction can be reduced to the security of the original certificateless signature scheme.In proxy signature schemes, an original signer A delegates its signing capability to a proxy signer B, in such a way that B can sign message on behalf of A. The recipient of the final message verifies at the same time that B computes the signature and that A has delegated its signing capability to B. Recently many identity-based （ID-based） proxy signature schemes have been proposed, however, the problem of key escrow is inherent in this setting. Certificateless cryptography can overcome the key escrow problem. In this paper, we present a general security model for certificateless proxy signature scheme. Then, we give a method to construct a secure certificateless proxy scheme from a secure certificateless signature scheme, and prove that the security of the construction can be reduced to the security of the original certificateless signature scheme.

关 键 词：certificateless signature proxy signature certificateless proxy signature 

分 类 号：TP301[自动化与计算机技术—计算机系统结构] TN918[自动化与计算机技术—计算机科学与技术]