Finding Differential Paths in ARX Ciphers through Nested Monte-Carlo Search

Ashutosh Dhar Dwivedi, Paweł Morawiecki, Sebastian Wójtowicz

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We propose the adaptation of Nested Monte-Carlo Search algorithm for finding differential trails in the class of ARX ciphers. The practical application of the algorithm is demonstrated on round-reduced variants of block ciphers from the SPECK family. More specifically, we report the best differential trails,up to 9 rounds, for SPECK32.

Original languageEnglish
JournalInternational Journal of Electronics and Telecommunications
Issue number2
Pages (from-to)147-150
Number of pages4
Publication statusPublished - 2018
Externally publishedYes


  • ARX ciphers
  • SPECK Cipher
  • Nested Monte-Carlo Search
  • Differential Cryptanalysis

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