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(a) Briefly explain the following security goals provided by cryptography: confidentiality, authentication, integrity and non-repudiation.
(b) State Kerckhoff's Principle and explain how it relates to cryptanalysis.
(c) Describe the chosen cipher text attack on encrypted messages.
(d) You have intercepted a message encrypted with a Caesar cipher. The ciphertext starts with HWDUYFSFQDXNX and you know the plaintext starts with c. Find the key and decrypt the message.
(e) Use Euclidean's algorithm to calculate gcd(763, 1729).
Discuss how developers should apply the following countermeasures to improve the security of their code:
(a) Consider the subsequent authentication options: A. Using password. B. Using pin and fingerprint Which option A or B provides stronger security and why? (b) Give
Problem a) Consider a 1000 Mbps Ethernet with a single Store-N-Forward switch mid-way in the path between two nodes A and B. Assume that there are no other nodes on the network
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COLLISION DETECTION The signals from two devices will interfere with each other and the overlapping of frames is known a collision. It does not cause to the hardware but data
Problem 1: Discuss how TWO of the following gurus have contributed to the Quality Movement, highlighting the major points of their philosophies: (a) Edward Deming (b) Jose
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CRC can detect the following errors better than check sums. a) Vertical errors b) Burst errors a) VERTICAL ERRORS: This kind of error happens due to a hardware fai
Threat Identification After identifying and performing a primary classification of an organization’s information assets, the analysis phase moves onto an examination of threats
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