SIMMETRIK BLOKLI SHIFRLASH ALGORITMLARIGA BARDOSHLI S-BLOKLARNI GENERATSIYA QILISH MUAMMOLARI

The use of the S-box is an important component of many symmetric block cipher algorithms used in modern cryptography. However, creating durable S-blocks that can resist various cryptanalysis methods is a complex problem. In this paper, we describe the challenges of achieving randomness and nonlinearity in the design of S-blocks, and the challenges of generating large numbers of these blocks to ensure security. By analyzing these issues, we discussed the challenges of creating robust S-blocks in symmetric block cipher algorithms and the importance of careful design and testing in achieving strong security.