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b) Use the Excel spreadsheet from the tutorial to aid your decryption of the ciphertext. Explain your steps and provide evidence such as suitable Excel screenshots, e.g., of frequency analysis.

Apr 22 2025 99.00

a) By completing the Kasiski table below, determine an appropriate key size to use for the decryption. Provide at least one example of how the potential key sizes were found from the interval values.

Apr 22 2025 99.00

b) The following ciphertext was encrypted using a substitution cipher. The key phrase to generate the key alphabet is based on a famous cryptographer’s name.

Apr 22 2025 99.00

Question 1: In each of the following parts you will be provided with a ciphertext, along with an indication of what type of cipher was used to encrypt it. Use your knowledge of cryptography and cryptanalysis techniques

Apr 22 2025 99.00

Cryptology underpins many protocols in cyber security and, by having an awareness of the fundamental classical and modern techniques in Cryptography and Cryptanalysis, we allow ourselves a broader understanding of how weaknesses can be avoided.

Apr 22 2025 99.00

If no explicit information about the security configuration of a device is provided, assume that no security configuration has taken place on that device, and that any security features/settings on the device are not enabled.

Apr 22 2025 99.00

explain why you feel that this choice of technology/configuration is beneficial to this application. If you choose to replace a device with a different one, explain why, and explain the benefits you expect to see.

Apr 22 2025 99.00

Recommend techniques to prevent or mitigate attacks on the network, or on the devices within the network. Identify the technology/configuration you wish to use, the device/s that it is intended to protect

Apr 22 2025 99.00

Identify/enumerate the various threats and risks in the devices and network shown in the diagram. To do this you will consider the security/threat landscape (these are collective terms that refer to the devices and security involved

Apr 22 2025 99.00

You are asked to examine and re-engineer a small business/home office style network (Figure 1) to improve its security, while protecting the key concepts underlying computer and network security: confidentiality, integrity, and availability.

Apr 22 2025 99.00

The 21st century has seen an unparalleled adoption of technology involving internetworked computers (the Internet). Computers are used in most aspects of our everyday life whether we are students, employees, employers, or private individuals.

Sep 15 2025 99.00

Demonstrate a comprehension of fundamental concepts in cyber security, maths and cryptography.

Apr 22 2025 99.00

Select and justify appropriate methods, algorithms and techniques contributing to the security of information systems and networks.

Apr 22 2025 99.00

Understanding the key concepts of data confidentiality, integrity and availability and select means by which these properties may be achieved in computer systems.

Apr 22 2025 99.00

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