查询结果:   欧海文,范祯,蔡斌思,杨明曌.理想格上基于身份的代理签名[J].计算机应用与软件,2018,35(1):312 - 317.
中文标题
理想格上基于身份的代理签名
发表栏目
安全技术
摘要点击数
730
英文标题
IDENTITY-BASED PROXY SIGNATURE SCHEME OVER IDEAL LATTICES
作 者
欧海文 范祯 蔡斌思 杨明曌 Ou Haiwen Fan Zhen Cai Binsi Yang Mingzhao
作者单位
北京电子科技学院 北京 100071 西安电子科技大学 陕西 西安 710071    
英文单位
Beijing Electronics Science and Technology Institute,Beijing 100071,China Xidian University,Xi’an 710071,Shaanxi,China    
关键词
理想格 基于身份 小整数解 代理签名
Keywords
Ideal lattice Identity-based Small integer solution Proxy signature
基金项目
作者资料
欧海文,教授,主研领域:密码编码与应用技术。范祯,硕士生。蔡斌思,硕士生。杨明曌,硕士生。 。
文章摘要
由于信息化地快速发展,代理签名在电子认证方面越来越重要,现有的代理签名技术大多是基于双线性对,但其在量子攻击下不安全,所以出现了一系列基于格上的代理签名方案,而这类方案中一个明显的问题是密钥和签名的尺寸过大。新方案利用理想格上的特殊结构和格上的陷门生成算法、原像取样算法、陷门委托算法,提出拥有相对较短的密钥和签名的代理签名方案。该方案证明了授权方式的不可伪造性,基于环上的SIS(Small Integer Solution)问题的困难性证明了在选择身份和固定选择消息攻击下强不可伪造性。与现有的方案相比,该方案的授权方式更简单,并且密钥和签名大小相对变小,从而提高了运行效率。
Abstract
Because of the rapid development of information, proxy signature is becoming more and more important in the electronic authentication. The existing proxy signature technology is mostly based on bilinear pair, but it is not safe under quantum attack. So a series of lattice-based proxy signature schemes have been proposed and an obvious problem is that the size of the key and signature is too large in these schemes. The new proxy signature scheme had a shorter key and signature, it utilized the special structure of the ideal lattice and trapdoor generation algorithm, pre-image sampling algorithm,trapdoor delegation algorithm. First, the scheme proved the unforgeability of the authorization method. Secondly, based on the difficulty of ring SIS problem when, it proved the strong unforgeability against selective identity and static chosen message attacks. Compared with the existing scheme, the scheme had a simpler way of authorization. The size of key and signature was relatively short, thus it improved operational efficiency.
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