The Fifth International Students' Olympiad in Cryptography -- NSUCRYPTO: problems and their solutions

June 11, 2019 Β· Declared Dead Β· πŸ› Cryptologia

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Authors Anastasiya Gorodilova, Sergey Agievich, Claude Carlet, Xiang-dong Hou, Valeriya Idrisova, Nikolay Kolomeec, Alexandr Kutsenko, Luca Mariot, Alexey Oblaukhov, Stjepan Picek, Bart Preneel, Razvan Rosie, Natalia Tokareva arXiv ID 1906.04480 Category cs.CR: Cryptography & Security Citations 9 Venue Cryptologia Last Checked 4 months ago
Abstract
Problems and their solutions of the Fifth International Students' Olympiad in cryptography NSUCRYPTO'2018 are presented. We consider problems related to attacks on ciphers and hash functions, Boolean functions, quantum circuits, Enigma, etc. We discuss several open problems on orthogonal arrays, Sylvester matrices and disjunct matrices. The problem of existing an invertible Sylvester matrix whose inverse is again a Sylvester matrix was completely solved during the Olympiad.
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