摘要： 对基于双线性对的无证书代理盲签名方案和基于离散对数的高效代理盲签名方案进行安全性分析，指出2个方案均存在伪造攻击，任何人在得到一个有效的代理盲签名后都可以对任意消息进行伪造并通过签名验证，同时指出2个代理盲签名均不满足不可链接性，代理签名人可以将其保留的签名信息同公开后的签名消息进行对应，从而证明2个方案均是不安全的。
关键词:
无证书代理盲签名,
不可伪造性,
不可链接性,
密钥产生中心
Abstract: In this paper, a certificateless proxy blind signature based on bilinear pairings and an efficient proxy blind signature based on discrete logarithm are analyzed on security. There are forgeries in both schemes that any one who has a valid proxy blind signature can forge any message else, and the two schemes do not meet the needs of unlinkability, the proxy signer can link the public signature with the information retained by himself. Wherefore neither of the schemes is secure.
Key words:
certificateless proxy blind signature,
unforgeability,
unlinkability,
Key Generation Center(KGC)
中图分类号:
欧海文, 张沙蚌. 2个代理盲签名方案的安全性分析[J]. 计算机工程, 2011, 37(16): 145-146.
OU Hai-Wen, ZHANG Sha-Bang. Security Analysis of Two Proxy Blind Signature Schemes[J]. Computer Engineering, 2011, 37(16): 145-146.