Here is another encryption/decryption exercise. For this exercise, I have provided a word that will serve as the key. You must figure out the key in order to complete this section.

To get you started: Easy = GXTW (Once you figure out the pattern to this, you can do the following):

3a. Encrypt this plaintext:

Cryptography is the art of secret writing.

3b. Decrypt the following ciphertext:

ALVAC KPLNV GGIEU RJBXY AVPSR OBAVF DC