Stefan Kölbl

ShiftRows Alternatives for AES-like Ciphers and Optimal Cell Permutations for Midori and Skinny

2018 · IACR Transactions on Symmetric Cryptology

We study possible alternatives for ShiftRows to be used as cell permutations in AES-like ciphers. As observed during the design process of the block cipher Midori, when using a matrix with a non-optimal branch number …