Run $"$

S$-$AES.py$"$ and you will get the output:

The ciphertext is: $0000011100111000$

which means that the plaintext Ob$0110111101101011$ encrypted by key

$0$b$1010011100111011$ using the simplified AES produces ciphertext

$0$b$0000011100111000.($all in binary format$)$

Then, you need to write a few lines of code in $"$

S$-$AES.py$"$ to call the decrypt function

provided in the Python file to perform decryption with simplified AES. The ciphertext

you need to decrypt is $0b111011001000111$ and the key is $0b0011011011101011.$