摘要
详细分析几个基于离散对数问题的多重代理多重签名方案,这些方案存在的缺陷和不足都已指出,并给出攻击方法。基于代理签名和多重签名,通过签名算法的改进,给出一种新的多重代理多重签名方案,并着重分析方案的正确性和安全性。在该方案中,可以避免滥用代理签名权,抵抗公钥替换攻击,满足不可伪造性,不可否认性,不可追踪性等特性。新方案在安全性方面有着较强的优势。
In this paper,we elaborately analyse the discrete logarithm problem-based multi-proxy multi-signature schemes,and point out all the defects and insufficiencies of them,then present the attack approaches.Based on the proxy signature and multi-signature,we present a new multi-proxy multi-signature scheme through improving the signature algorithm,and focus on analysing the correctness and safety of the scheme.In it the abuse of proxy signature rights can be avoid,and the public-key substitute attack can be resisted.It satisfies the features of unforgeability,undeniability,and untraceability etc.The new scheme has a strong advantage in terms of safety.
出处
《计算机应用与软件》
CSCD
北大核心
2014年第2期317-320,共4页
Computer Applications and Software
基金
河北省高等学校科学技术研究青年基金项目(Q2012020
QN20131047)
河北省自然科学青年基金项目(A2011408006)
关键词
多重签名
代理签名
多重代理多重签名
Multi-signature
Proxy signature
Multi-proxy multi-signature
