Підвищення стійкості шифру BLOWFISH на основі оптимізації слабких ключів генетичним алгоритмом

Abstract

Existing symmetric algorithms for encryption of information were considered. Their advantages and disadvantages were described in details. An experimental study of the Blowfish cipher was carried out in order to increase its cryptostability. The process of optimization of weak keys within the genetic algorithm was proposed. The paper presented a statistical tests of the proposed improvement of the algorithm, which showed that the generated sequence is random, and therefore the algorithm works correctly.