$/$pq $"$GPT Answers will not be allowed or you will get a dislike$---$

$"$ CU$02$Q$1$: Using S$-$DES block cipher, do the following: $1.$ Generate the keys, K$1$ and K$2$ from key$=10110010112.$ Encrypt the hexadecimal number: D$53.$ Decrypt the hexadecimal number: $87$