On Reconstruction of RC4 Keys from Internal States

  • Authors:
  • Shahram Khazaei;Willi Meier

  • Affiliations:
  • EPFL, Lausanne, Switzerland;FHNW, Windisch, Switzerland

  • Venue:
  • Mathematical Methods in Computer Science
  • Year:
  • 2008

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Abstract

In this work key recovery algorithms from the known internal states of RC4 are investigated. In particular, we propose a bit-by-bit approach to recover the key by starting from LSB's of the key bytes and ending with their MSB's.