The signal to noise ratio in the differential cryptanalysis of 9 rounds of data encryption standard
DOI:
https://doi.org/10.26636/jtit.2006.3.378Keywords:
block cipher DES, differential cryptanalysis, substitution boxes, S/N ratioAbstract
There is presented the differential cryptanalysis method of attack on data encryption standard (DES) reduced to 9 rounds. More precise estimation than that of Biham and Shamir of the signal to noise (S/N) ratio is obtained. Also, method of using the ratio in calculation of required number of plaintexts is suggested. There are given results (time of performance) and implementation’s issues of practical realisation of this attack.
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Copyright (c) 2006 Journal of Telecommunications and Information Technology
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