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arXiv 0802.3734cs.CCcs.CR
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通用情况复杂度和单向函数

Generic case complexity and One-Way functions

Alex D. Myasnikov

摘要:

本文的目的是向密码学界介绍一般情况复杂性的思想和方法。这种相对较新的方法允许人们以简单直观的方式分析算法在“大多数”输入上的行为,与基于平均值的经典方法相比具有一些实际优势。我们提出了一种替代定义的单向函数使用的概念,一般情况下的复杂性,并证明其等价的标准定义。此外,我们证明了新方法的方便性,给出了一个简短的证明,扩展对手的一个更大的类的部分算法的错误不会改变的安全性假设的强度。

英文摘要:

The goal of this paper is to introduce ideas and methodology of the generic case complexity to cryptography community. This relatively new approach allows one to analyze the behavior of an algorithm on ''most'' inputs in a simple and intuitive fashion which has some practical advantages over classical methods based on averaging. We present an alternative definition of one-way function using the concepts of generic case complexity and show its equivalence to the standard definition. In addition we demonstrate the convenience of the new approach by giving a short proof that extending adversaries to a larger class of partial algorithms with errors does not change the strength of the security assumption.

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。

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