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(a) Explain the two possible configuration for 3DES.
(b) What is the main disadvantage of 3DES?
(c) Why are most modern symmetric algorithm block ciphers?
(d) Describe four weaknesses of symmetric cryptography.
(e) Consider that Alice have to send bulk data to a remote user Bob.
Explain how Alice would use both asymmetric and symmetric cryptography to achieve both security and efficiency in terms of encryption time.
QUESTION (a) Consider the following authentication options A. Using password B. Using pin and fingerprint Which option A or B provides stronger security and why? (b
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Task 1 a. Consider the table showing the relative frequencies of letters in English. Arrange the frequencies from largest to smallest, and make a cumulative plot, using Exc
Problem: (a) What is a firewall and which are its most important tasks? (b) What is the difference between default deny and default permit? Which advantages and disadvanta
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