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<p>In this paper we present an improved version of the classical RC4 stream cipher. The improvements allow to build lightweight high-performance cryptographically strong random number generator suitable for use in IoT and as a corresponding component of operating systems. The criterion for high performance is both a high speed of generating a stream of random numbers and low overhead costs for adding entropy from physical events to the state of the generator.</p>

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RC4OK: an improvement of the RC4 stream cipher

  • 期刊论文

  • 发表日期：

    2025年4月7日

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  • Oleg Khovayko,
  • Dmitriy Schelkunov

摘要

In this paper we present an improved version of the classical RC4 stream cipher. The improvements allow to build lightweight high-performance cryptographically strong random number generator suitable for use in IoT and as a corresponding component of operating systems. The criterion for high performance is both a high speed of generating a stream of random numbers and low overhead costs for adding entropy from physical events to the state of the generator.