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(a) Explain the importance of the Euler Totient function in Cryptography. Calculate Euler Totient function value, φ(1280).
(b) Explain the role of the Authentication Server (AS) and Ticket Granting Server (TGS) in Kerberos.
(c) Explain the following terms as used in cryptography:
(i) Avalanche effect (ii) Digital Signature (iii) Stream Cipher (iv) Confusion (v) Message Digest (5
(d) Briefly describe the advantages and drawbacks of quantum cryptography.
(e) Briefly describe the triple DES cipher, stating its practical implementation, advantages and disadvantages.
algorithm on simple intrest
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CONCEPT OF PACKET : Network systems splits data in small junks or blocks known as packets, which they send individually. Why we required packets rather than bits? The answer to
MAC Address The address for a machine as it is identified at the Media Access Control (MAC) layer in the network structure. MAC address is generally stored in ROM on the n
The method used to check errors is checksum . In this method data is treated as a sequence of integers and their arithmetic sum is calculated and the carry bits are added to the
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QUESTION (a) Describe the two possible configurations for 3DES (b) What is the main disadvantage of 3DES? (c) Why are most modern symmetric algorithm block ciphers? (d
LEGAL, ETHICAL AND PROFESSIONAL ISSUES To minimize liabilities and reduce risks, information security practitioner should: • to understand current legal environment • to s
INTRODUCTION TO SECURITY AND PERSONNEL When implementing information security, there are several human resource issues that should be addressed. They are • Positioning and n
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