Abstract
I present a new attack of FEAL-4 blockcipher. The attack requires only 24 blocks of 8-byte randomly given known-plaintext. Using these blocks, we can break FEAL-4 with the probability of greater than 90%, in 14 seconds on a personal computer (cpu 80386 16MHz). It is based on the system of linear equations on the differences.
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References
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T. Kaneko. “A Known plaintext cryptanalytic attack on FEAL-4”, Tech. Rep. of IEICE ISEC91-25 (1991)
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© 1993 Springer-Verlag Berlin Heidelberg
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Kaneko, T. (1993). A known-plaintext attack of FEAL-4 based on the system of linear equations on difference. In: Imai, H., Rivest, R.L., Matsumoto, T. (eds) Advances in Cryptology — ASIACRYPT '91. ASIACRYPT 1991. Lecture Notes in Computer Science, vol 739. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-57332-1_43
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DOI: https://doi.org/10.1007/3-540-57332-1_43
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