Steadily on my way builing an Rijndael-esque encryptor.
Building upon my #xor shell script; yesterday I made an 256 bits sustitution table.
Today I made the foundation of a key scheduler. Interestingly bash is able to process 4×4, 6×4 or 8×4 matrices. And the code is still quite simple. I am learning a lot and enjoying all the little puzzles to solve!
Follow my progress on #codeberg.
https://codeberg.org/oxo/tool/src/branch/main/dev/aes
#linux #bash #shell #script #aes #rijndael #encryption