4
votes
1answer
190 views

S-box Cryptanalytic Resistance

In DES, different S-boxes were tested for cryptanalytic resistance and the most secure one was chosen for the algorithm itself. How do different S-boxes offer different levels of security against ...
15
votes
2answers
1k views

How were the DES S-box values determined?

It seems like the S-boxes in DES have essentially random values. How were these chosen?