Iterating Block ciphers 1. terated block cipher Random( binary)keyK→ round keys:K1…,KN, 2. Round function g W=g(wr-1, Kr), Where wr-1 is the previous state4 Iterating Block ciphers 1. Iterated block cipher Random (binary) key K ➔ round keys: K1 ,..., K Nr , 2. Round function g wr = g(wr-1 , Kr ), where wr-1 is the previous state