Integral Cryptanalysis on Full MISTY1

  title={Integral Cryptanalysis on Full MISTY1},
  author={Yosuke Todo},
  journal={Journal of Cryptology},
  • Yosuke Todo
  • Published 16 August 2015
  • Computer Science, Mathematics
  • Journal of Cryptology
MISTY1 is a block cipher designed by Matsui in 1997. It was well evaluated and standardized by projects, such as CRYPTREC, ISO/IEC, and NESSIE. In this paper, we propose a key recovery attack on the full MISTY1, i.e., we show that 8-round MISTY1 with 5 FL layers does not have 128-bit security. Many attacks against MISTY1 have been proposed, but there is no attack against the full MISTY1. Therefore, our attack is the first cryptanalysis against the full MISTY1. We construct a new integral… 
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