一种新的基于Schnorr签名方案的代理签名方案  

New proxy signature scheme based on Schnorr signature scheme

作　　者：辛向军[1] 潘瑾[2] 肖国镇[3] 

机构地区：[1]西安电子科技大学ISN国家重点实验室信息保密研究所,陕西西安710071 [2]河南检察职业学院教务处,河南郑州450000 [3]郑州轻工业学院信息与计算科学系,河南郑州450002

出　　处：《重庆邮电学院学报（自然科学版）》2005年第6期742-744,共3页Journal of Chongqing University of Posts and Telecommunications(Natural Sciences Edition)

摘　　要：最近,Dai和Wang分别给出了一种基于Schnorr签名体制的指定签名验证者的代理签名方案,但是,在Dai的文献中所采用的代理签名方案并不安全;Wang在文献中所采用的代理签名方案虽然克服了Dai方案中的缺点,但该方案中代理签名人和授权者在产生代理签名密钥时交互过多,因而效率比Dai的方案低。因此通过利用Schnorr签名体制生成代理签名人的私有参数和公开参数,给出了一种新的代理签名方案,该方案不仅克服了Dai和Wang方案的缺点,而且更为安全、简单和有效。Recently, two designated-verifier proxy signatures schemes based on Schnorr signature scheme for E-commerce were proposed by Dai and Wang respectively. However, in the literature of Dai, the proxy signature scheme is not secure. Wang＇s scheme overcomes the disadvantages of Dai＇s, but there are more exchanges between the original signer and the proxy signer when the proxy signing key is generated in Dai＇s scheme than those in Dai＇s, which lead to his scheme less efficient than that of Daio In this paper, by using the schnorr signature scheme to generate the private and public parameters of the proxy signer, a new proxy signature scheme is proposed, which overcomes the shortcomings of the schemes proposed by Dai and Wang, and it is more secure, simple and efficient than that proposed by Dai and Wang.

关 键 词：代理签名 数字签名 信息安全 Schnorr签名体制 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]