摘要
基于Lee等人提出的修改的LKK方案,提出一种改进的强代理签名方案.在授权阶段原始签名者和代理签名者之间使用盲化方法,以及改进sA的结构,解决了原方案不能抵抗原始签名者的伪造攻击和原始签名者的变化攻击的问题.分析表明所提方案能够满足强代理签名方案的安全需求,同时不需要使用安全信道.
Based on the revised LKK scheme presented by ：Lee et al., an improved strong proxy signature scheme is proposed. A method of blindness is used between the original signer and the proxy signer, and the construction of SA is improved in the period of delegation. The problem that the original scheme is insecure against the original signer＇s forgery attack and the original signer＇s changing attack is resolved. Analysis shows that the proposed scheme satisfies all security properties of the strong proxy signature scheme and does not need a secure channel.
出处
《西安电子科技大学学报》
EI
CAS
CSCD
北大核心
2006年第5期778-781,共4页
Journal of Xidian University
基金
国家自然科学基金资助项目(60473072)
关键词
代理签名
安全信道
伪造攻击
proxy signature
secure channel
forgery attack
