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Sponge-Based Pseudo-Random Number Generators

机译:基于海绵的伪随机数生成器

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This paper proposes a new construction for the generation of pseudo-random numbers. The construction is based on sponge functions and is suitable for embedded security devices as it requires few resources. We propose a model for such generators and explain how to define one on top of a sponge function. The construction is a novel way to use a sponge function, and inputs and outputs blocks in a continuous fashion, allowing to interleave the feed of seeding material with the fetch of pseudo-random numbers without latency. We describe the consequences of the sponge indifferentiability results to this construction and study the resistance of the construction against generic state recovery attacks. Finally, we propose a concrete example based on a member of the KECCAK family with small width.
机译:本文提出了一种用于生成伪随机数的新结构。该构造基于海绵功能,并且由于所需资源很少,因此适用于嵌入式安全设备。我们为此类生成器提出了一个模型,并解释了如何在海绵函数之上定义一个生成器。这种构造是一种使用海绵函数的新颖方法,并且以连续的方式输入和输出块,从而允许在不等待时间的情况下将种子材料的馈送与伪随机数的获取交织在一起。我们描述了海绵不可区分性结果对这种构造的后果,并研究了该构造对通用状态恢复攻击的抵抗力。最后,我们提出了一个基于KECCAK系列成员的小宽度的具体示例。

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