一个可证安全的高效的代理盲签名方案  

An efficient and provably secure proxy blind signature scheme

作　　者：周明[1] 王箭[1] 

机构地区：[1]南京航空航天大学计算机科学与技术学院,江苏南京210016

出　　处：《计算机工程与科学》2015年第9期1643-1651,共9页Computer Engineering & Science

摘　　要：代理盲签名结合了代理签名和盲签名的优点,在电子商务等领域有着广阔的应用前景。目前大多数代理盲签名的安全性是启发式分析,没有形式化证明,并且大多没有考虑多一伪造攻击。提出了一个新型的代理盲签名安全模型,并在该模型下提出了一个基于双线性对的代理盲签名方案,并在随机预言机模型下,证明了其在选择消息/授权文件攻击下是不可伪造的,其安全性可分别规约为CDH问题和Chosen-Target CDH问题。分析表明,该方案满足代理盲签名的主要安全要求,而且和已有的方案相比,本方案更加高效。By combining the advantages of blind signatures w nature can be widely applied in many fields, such as e-commerce. blind signature schemes only give some heuristic explanations w proxy signatures, a proxy blind sig- urrently, most of the proposed proxy out formal proof, and one-more for- gery is seldom considered in many schemes. In the paper, we propose a novel efficient security model and a proxy blind signature scheme based on bilinear parings. The scheme is unforgeable against adap- tive chosen message/warrant attacks under the Computational Diffie-Hellman assumption and Chosen- Target Computational Diffie-Hellman assumption in the random oracle model. The analysis shows that the proposed scheme can satisfy the main secure properties of a proxy blind signature. Furthermore, the scheme is more efficient than traditional ones.

关 键 词：代理盲签名 双线性对 随机预言机 多一伪造 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]