- 기본 구조
AES use <Rijndael Cipher>
Block Structure로 이루어져있음.
과정 요약
sub bytes
shift row
mix column
add round key
AES is stronger than DES
longer encryption key & block size
DES uses balanced Feistel structure (half block not altered at each round)
but, AES uses subsubstitution-permutation steps and operates on entire block.
AES vs triple DES