"DBST: A Lightweight Block Cipher Based on Dynamic S-Box"

Block ciphers, a branch of cryptography, are important in information security as 5G technology advances. While encryption algorithms of the traditional Feistel structure have significant advantages regarding consistent encryption and decryption, they have poor diffusion effects. They cannot adapt to the high-throughput communication environment and devices with limited resources. The S-box is a critical nonlinear component in the block cipher that greatly influences algorithm security. However, many S-boxes exist in a static manner, making effective resistance to cryptographic attacks based on specific S-boxes difficult. To address the problems, a team of researchers proposed DBST, a lightweight block cipher based on dynamic S-box for devices with limited hardware resources and high-throughput requirements. They performed a security analysis and a hardware experiment on DBST as part of the research. This article continues to discuss the lightweight block cipher based on dynamic S-box.

SCIENMAG reports "DBST: A Lightweight Block Cipher Based on Dynamic S-Box"