Kapalova, N., Algazy, K., Sakan, K. and Dyussenbayev, D. 2021. THE ALGORITHM OF BLOCK ENCRYPTION "AL03" AND THE RESULTS OF ITS ANALYSIS. Bulletin of the Abai KazNPU, the series of "Physical and Mathematical Sciences". 75, 3 (Sep. 2021), 108–114. DOI:https://doi.org/10.51889/2021-3.1728-7901.13.