Assignment No. 02
Semester: Fall 2019
Network Security-CS315 Total Marks: 20
Due Date: 28/11/2019
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To enhance the knowledge about Cryptographic techniques involving symmetric and asymmetric algorithms.
Question No.1: 10 Marks
Message authentication in “One-way Hash” function can be implemented with and without encryption. Considering the scenario where a message is authenticated without encryption between two stations, you are required to answer the following questions:
a) What will be component of the message sent from station A and received at station B?
b) What component of the message will ensure at receiving station that message is not corrupted?
Question No.2: 10 Marks
Cryptography is usually done by using Symmetric and Asymmetric encryption algorithms like Public-key encryption algorithms and Hash functions respectively. How would you differentiate Public-key encryption algorithms and Hash functions on the basis of following?
a) Mechanism of mathematical operations.
b) Number of keys being used for cryptography.
Best of Luck!