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A Matrix PRNG with S-Box Output Filtering

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  • Rafael Alvarez
  • Antonio Zamora

Abstract

We describe a modification to a previously published pseudorandom number generator improving security while maintaining high performance. The proposed generator is based on the powers of a word-packed block upper triangular matrix and it is designed to be fast and easy to implement in software since it mainly involves bitwise operations between machine registers and, in our tests, it presents excellent security and statistical characteristics. The modifications include a new, key-derived s-box based nonlinear output filter and improved seeding and extraction mechanisms. This output filter can also be applied to other generators.

Suggested Citation

  • Rafael Alvarez & Antonio Zamora, 2014. "A Matrix PRNG with S-Box Output Filtering," Journal of Applied Mathematics, Hindawi, vol. 2014, pages 1-8, September.
    • Handle: RePEc:hin:jnljam:460497
    DOI: 10.1155/2014/460497
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