Block Cipher Assignment

a$.$ Give the $5$ round of Feistel network defined with the following parameters;

Plain text $=011110100001$

The encoding of the right portion $($R$)$ is obtained by shifting bits as follows

First bit goes to second place

Second bit goes to third place

Third bit goes to the first place.

Then assigned to $E.$

The left portion is obtained by L$+E$

The end result of the cipher text is concatenated.

b$.$ Use DES to encrypt a message $"0123456789$ABCDEF" in hexadecimal using a key $K=$

$133457799$BBCDFF$1$ in hexadecimal. Your cipher text should be in hexadecimal.