HW3: Produce a brief report answering the following questions:

Briefly explain why asymmetric encryption is called public key encryption.

Using the Vigenere cipher (page 99), encrypt the message COMPUTERSCIENCEISFUN using the key PASSWORD.

The RSA algorithm is explained on page 115 in the textbook and also in the 2 PPTs in the unit. Given p=11, q=3, n=33, e=3, and d=7. Decrypt a four letter cypher text message with the following values 1 4 28 21 to the plaintext ordinal values of the alphabet, for example a=1, b=2,….z=26. Translate the decrypted numeric ordinal values to text. What is the plaintext?

The suggested file name for homework 3 is lastname.HW3Crypto.doc. Submit your document in Microsoft Word or PDF format in the Dropbox for HW3.

Textbook link

https://drive.google.com/file/d/1ShPntXG6p-n0NsYvLXxjAaHOJInfax2R/view?usp=sharing