In this section we shortly present all unsolved problems stated in the history of NSUCRYPTO, where we mention also the current status of all the problems.

Year Problem title Status
2014 Watermarking cipher Unsolved
2014 APN permutation Unsolved
2014 Super S-box Unsolved
2015 A secret sharing Partially SOLVED
2015 Hypothesis Unsolved
2016 Algebraic immunity SOLVED during the Olympiad
2016 Big Fermat numbers Unsolved
2017 The image set Unsolved
2017 Boolean hidden shift problem Unsolved
2017 Useful Proof-of-work for blockchains Unsolved
2018 Orthogonal arrays Unsolved
2018 Sylvester matrices SOLVED during the Olympiad
2018 Disjunct Matrices Unsolved