The key is 5A to binary : 0101 1010
77 B3 F1 B6 36 71 to binary: 0111 0111 1011 0011 1111 0001 1011 0110 0011 0110 0111 0001
Now let’s look at a more modern symmetric encryption. Assume that the algorithm for this
system is to rotate the bits in the message right 6 positions, XOR the bits with the key (repeat the
key so as all the bits are covered), and rotate the bits 4 positions to the left.
b. Using the key and the above algorithm, decrypt the following name (given in hex): 77 B3
F1 B6 36 71. Remember that you’ll have to reverse the order and direction of operations
in order to decrypt the name (i.e. Start by rotating 4 positions right). What is the name
exactly as it is decrypted?