两类盲代理多重签名方案的安全性分析和改进  

Security Analysis and Improvement of Two Classes of Blind Proxy Multi-signature Schemes

作　　者：胡小明[1] 许华杰[1] 张哲[1] 

机构地区：[1]上海第二工业大学计算机与信息学院,上海201209

出　　处：《计算机工程》2010年第16期129-130,134,共3页Computer Engineering

基　　金：上海市教育委员会科研创新基金资助项目(10YZ201);上海高校选拔培养优秀青年教师科研专项基金资助项目

摘　　要：针对具有盲代理签名体制和代理多重签名体制双重性质的两类盲代理多重签名方案提出抵抗原始签名人及任何人的子代理密钥2类伪造攻击。为抵抗这2种攻击,对盲代理多重签名方案进行改进,提出安全的盲代理多重签名方案。结果证明改进的方案不仅可有效抵抗2种攻击,同时具有更高的效率,计算量更少,代理签名长度更短。Two forgery attacks are presented on two classes of blind proxy multi-signature schemes which have the properties of blind proxy signature schemes and proxy multi-signature schemes.In order to resist the two attacks,two classes of improved blind proxy multi-signature schemes are proposed.Result is proved that improved blind proxy multi-signature schemes not only resist the above two attacks,but also are more efficient than others.The computation cost is less and the length of proxy signature is shorter.

关 键 词：密码学 盲代理多重签名 密码分析 

分 类 号：TN918[电子电信—通信与信息系统]