Assignment 2

(1)

Differentiate block ciphers from stream ciphers and contrast symmetric from asymmetric cryptography. Illustrate with examples. (Maximum: Half a Page)

(2)

(a) Compare monoalphabetic and polyalphabetic ciphers.

(b) Using the Caesar Cipher method, crack this coded message - decrypt the ciphertext – WXWRULDO.

Illustrate your work.

(Maximum: Half a Page)