The Seventh International Olympiad in Cryptography: Problems and solutions

@article{Gorodilova2021TheSI,
  title={The Seventh International Olympiad in Cryptography: Problems and solutions},
  author={Anastasiya Gorodilova and Natalia N. Tokareva and Sergey Agievich and Claude Carlet and Valeriya Idrisova and Konstantin Kalgin and Denis Kolegov and Alexandr Kutsenko and Nicky Mouha and Marina Pudovkina and Aleksei Udovenko},
  journal={Sibirskie Elektronnye Matematicheskie Izvestiya},
  year={2021}
}
The International Olympiad in Cryptography NSUCRYPTO is the unique olympiad containing scientific mathematical problems for professionals, school and university students from any country. Its aim is to involve young researchers in solving curious and tough scientific problems of modern cryptography. In 2020, it was held for the seventh time. Prizes and diplomas were awarded to 84 participants in the first round and 49 teams in the second round from 32 countries. In this paper, problems and… 

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