基于DLP的指定验证人的代理签名  

Designated-verifier proxy signature scheme based on DLP

作　　者：李素娟[1] 

机构地区：[1]南京工业大学理学院

出　　处：《南京工业大学学报（自然科学版）》2006年第3期100-103,共4页Journal of Nanjing Tech University(Natural Science Edition)

摘　　要：代理签名与指定验证人签名都是非常有用的密码学工具,在实际生活中有着广泛的应用。在代理签名中,原始签名人能将其数字签名的权力委托给代理签名人;而在指定验证人签名方案中,对于验证人却是有所限制的。文章结合两者的优点,利用基于离散对数的Schnorr签名方案构造了一个指定验证人的代理签名方案。本方案与其他方案相比,除了满足所必需的安全性之外,在代价及计算量上更为高效。Proxy signature and designated-verifier signature are useful tools in cryptography. They both have wide applications in practice. In proxy signature, an original signer can delegate his signature power to a proxy signer who signs a message on behalf of the original signer. In designated-verifier signature the verifier is restrictive. In this paper, based on DLP and a Schnorr signature scheme, a designated-verifier proxy signature scheme is presented, which satisfies the security properties of both proxy signature scheme and designated-verifier signature scheme. This scheme, apart from its security,is less expensive and more efficient than others.

关 键 词：代理签名 指定验证人签名 数字产品 电子商务 信息安全 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]