摘要： 对俞建英等人提出的具有消息恢复功能的代理盲签名方案(计算机应用与软件，2011年第2期)进行安全性分析，指出在该方案中指定验证者可以冒充代理签名者对任意消息伪造代理盲签名，且代理签名者和指定验证者合谋可以追踪消息拥有者。为此，提出一种可以抵抗指定验证者的伪造攻击和链接攻击的代理盲签名方案。分析结果表明，改进的方案具有强不可伪造性、不可否认性、不可链接性和保密性等安全性质。
关键词:
代理盲签名,
消息恢复,
指定验证者,
双线性对,
不可链接性,
伪造攻击
Abstract: Security analysis of designated verifier proxy blind signature scheme with message recovery which is proposed by Yu Jianying shows that the scheme exists follow security flaws: the designated verifier can impersonate proxy signer to forge proxy blind signature of any message; the proxy signer can track the message owner colluded with the designated verifier. An improved scheme which can resist the designated verifier’s forgery attack and linkability attack is proposed. Analysis result shows that the improved scheme satisfies strong unforgeability, undeniability, unlinkability and privacy.
Key words:
proxy blind signature,
message recovery,
designated verifier,
bilinear pairings,
unlinkability,
forgery attack
中图分类号:
何俊杰, 孙芳, 祁传达. 带消息恢复功能的代理盲签名方案分析与改进[J]. 计算机工程, 2012, 38(15): 119-122.
HE Dun-Jie, SUN Fang, QI Chuan-Da. Analysis and Improvement of Proxy Blind Signature Scheme with Message Recovery Function[J]. Computer Engineering, 2012, 38(15): 119-122.