In Vernam cipher, encryption and decryption take place using the bit-wise exclusive-OR (XOR) operation. That is, ciphertext = plaintext XOR key for encrypting, while plaintext = ciphertext XOR key. Suppose the bit representations for each letter in the following table. For example, to encrypt V with key T, V XOR T = 111 XOR 110 = 001 = E, so we get E as the associated ciphertext.

Letter	A	E	I	M	O	R	T	V
Encoding	000	001	010	011	100	101	110	111

1. Suppose that you have a message M = MARIO and the key is MOREM. What is the ciphertext?

2. Now show the process of decryption for the ciphertext encrypted in question (a).