arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv cs/0501017cs.CRcs.ITmath.IT
收藏

基于半群作用的公钥密码学

Public Key Cryptography based on Semigroup Actions

G. Maze, C. Monico, J. Rosenthal

摘要:

当Miller和Koblitz建议这样的协议可以在椭圆曲线上使用时,$(\Z/p\Z)^*$中原始Diffie-Hellman密钥交换的推广发现了一个新的深度。在本文中,我们提出了一个更广泛的推广,其中阿贝尔半群作用在有限集上。我们定义了一个Diffie-Hellman密钥交换在这个设置中,我们说明了如何建立有趣的半群行动使用有限(简单)半环。所提出的扩展的实用性依赖于半群作用的轨道大小,并且在这一点上,如何计算这些轨道的大小以及是否存在一般的平方根攻击是一个悬而未决的问题。第二节给出了由单半环构造的一个具体的实用半群作用。需要进一步研究来分析这一制度。

英文摘要:

A generalization of the original Diffie-Hellman key exchange in $(\Z/p\Z)^*$ found a new depth when Miller and Koblitz suggested that such a protocol could be used with the group over an elliptic curve. In this paper, we propose a further vast generalization where abelian semigroups act on finite sets. We define a Diffie-Hellman key exchange in this setting and we illustrate how to build interesting semigroup actions using finite (simple) semirings. The practicality of the proposed extensions rely on the orbit sizes of the semigroup actions and at this point it is an open question how to compute the sizes of these orbits in general and also if there exists a square root attack in general. In Section 2 a concrete practical semigroup action built from simple semirings is presented. It will require further research to analyse this system.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑