problem 1: Describe the significance of the Euler Totient function in Cryptography. Compute Euler Totient function value, φ(1280).

problem 2: Describe the role of the Authentication Server (AS) and Ticket Granting Server (TGS) in the Kerberos.

problem 3: Describe the given terms as used in the cryptography:

a) Avalanche effect
b) Digital Signature
c) Stream Cipher
d) Confusion
e) Message Digest

problem 4: In brief describe the benefits and limitations of quantum cryptography.

problem 5: In brief describe the triple DES cipher, stating its practical implementation, benefits and drawbacks.