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arXiv 1005.0058cs.CR
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密码非线性序列发生器的线性解

Linear solutions for cryptographic nonlinear sequence generators

A. Fúster-Sabater, P. Caballero-Gil

摘要:

本文证明了基于90/150规则的线性元胞自动机能生成二元常系数线性差分方程的全部解。其中一些解决方案是伪随机噪声序列,在密码学中有应用:由收缩生成器类生成的序列。因此,这一贡献表明,收缩生成器不能提供足够的保证用于加密目的。此外,线性化是通过一个简单的算法,提供了一个完整的描述。

英文摘要:

This letter shows that linear Cellular Automata based on rules 90/150 generate all the solutions of linear difference equations with binary constant coefficients. Some of these solutions are pseudo-random noise sequences with application in cryptography: the sequences generated by the class of shrinking generators. Consequently, this contribution show that shrinking generators do not provide enough guarantees to be used for encryption purposes. Furthermore, the linearization is achieved through a simple algorithm about which a full description is provided.

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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