Here Is Another Encryption Decryption Exercise For This Exercise I Have Provided

Here is another encryption/decryption exercise. For this exercise, I have provided a word that will serve as the key.

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