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,对于验证人是有所限制的。该文结合二者的优点,利用基于离散对数的Schnorr数字签名方案构造了一个指定验证人的代理签名方案。新提出的方案能够满足代理签名和指定验证人签名的安全性质。分析显示,新方案不仅是安全的,而且在通信和计算方面是高效的。
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
Abstract: Proxy signature and designated-verifier signature are useful tools in cryptography. They both have wide applications in real life. In a proxy signature, an original signer can delegate his signing power to a proxy signer who signs a message on behalf of the original signer. In a designated-verifier signature the verifier is restrictive. The characteristics of proxy signatures and designated-verifier signatures are combined. Using the schnorr signature scheme based on DLP, a designated-verifier proxy signature scheme is presented. The new scheme satisfies the security properties of both proxy signature schemes and designated-verifier signature schemes. Analysis shows that the new scheme is secure and efficient in computation and communication.
Key words:
Proxy signature,
Designated-verifier signature,
Digital product,
E-commerce,
Information security
李素娟;张福泰;黄欣沂. 一种高效的指定验证人的代理签名方案[J]. 计算机工程, 2006, 32(23): 148-150.
LI Sujuan; ZHANG Futai; HUANG Xinyi. An Efficient Designated-verifier Proxy Signature Scheme[J]. Computer Engineering, 2006, 32(23): 148-150.