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(a) An opponent is using RSA with the public key {e=53, n=77}. You intercept the ciphertext C=10. (All values on this problem, including the ciphertext and the cleartext, are numeric.)
(i) Deduce p and q. (ii) Evaluate her private key. (iii) What is the cleartext?
(b) Describe the terms ‘prime number' and ‘prime factorisation'. Illustrate the importance of prime numbers in cryptography.
(c) Consider cryptographic hash functions. Name four essential properties for a cryptographic hash function, explaining for each why it is essential.
(d) Explain the following techniques used by firewalls to control access:
(i) Packet Filtering (ii) Proxy Server (iii) Stateful Inspection
(a) Draw the waveform for an asynchronous transmission with the given specifications: 8 data bits with value 11010001 (LSB listed first here), one parity bit (even), one star
Border Gateway Protocol It is a protocol needed to advertise the set of networks that can be achieved within an autonomous machine. BGP activates this information to be shared
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Question requires you to produce a pcap file from a Wireshark capture. In addition, you must include a screen capture of Wireshark and some specific information regarding the fram
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Bridges perform both in the data link layers and physical of LANs of same kind. They split a bigger network in to smaller segments. They have logic that accept them to store the
Question 1 a) Explain how CSMA/CD works. b) Describe the term "exponential back-off". c) Describe the differences between "circuit switching" and "packet switching". d) Th
a) Wireless local area network (WLAN) technologies constitute a fast-growing market introducing the flexibility of wireless access into office, home, or production environments. G
QUESTION (a) Discuss why it is considered more secure to use the SET (Secure Electronic Transaction) for e-commerce instead of using SSL (b) Describe how the dual signature
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