Reference no: EM133928373

Advanced Network and Information Security

Assessment 1: Tutorial Part C

Encryption Implementation and Applications

The Hill Cipher takes a letter and converts it to a number form. E.g. A = 0, B = 1, C = 2, ...
e.g. Message: ‘DOG' = [3 14 6]
Covert the key into a 3x3 Matrix, Key: ‘GYBNQKURP'.
Multiple the Matrix together (use can use Octave Online). "mod 26" the resultant to get the cipher text.
Reverse the Ciphertext to recover the Message.
The Extensible Authentication Protocol (EAP) is widely used in secure network access.
Explain how EAP facilitates multiple authentication mechanisms (e.g., certificates, smart cards, biometrics) using encryption-based terminology.
Your answer should include references to key exchange, identity protection, and session key derivation.

You are hired to design a secure access control framework for a multinational company with varying levels of data sensitivity.
For each of the following models, recommend whether encryption should be used, and if so, specify the type (e.g., symmetric, asymmetric, hybrid) and key management strategy:
DAC (Delegated Access Control)
MAC (Mandatory Access Control)
ABAC (Attribute-Based Access Control)
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Rule-Based Access
Risk-Adaptive Access
Identity-Based Access
Organization-Based Access
Support your recommendations with examples of how encryption enhances or complicates enforcement in each model.
You are conducting a forensic investigation on a compromised network. Get expert online assignment help in the USA.
Draw and explain the Authentication Header (AH) used in IPsec for both Transport and Tunnel modes.
Design a hash-based system to track and verify file integrity across multiple endpoints.
Explain how Merkle Trees and Blockchain structures use hashing to ensure tamper-proof logging and traceability.
Define a digital footprint for a computing device and explain how it can be calculated and used in forensic audits.

Assessment 2: Part C

Encryption Implementation and Applications

Tasks:
Explore WireGuard for Windows and document the encryption algorithms it uses.
Review the SoftEther VPN Setup Guide to understand VPN encryption parameters.
Use the Windows Defender Firewall Guide - Microsoft to design a basic firewall rule set.
Justify your encryption choices and reflect on how VPNs and encrypted firewalls contribute to enterprise security.
Resources:
WireGuard for Windows
SoftEther VPN Setup Guide
Windows Defender Firewall Guide - Microsoft
ChaCha20 Encryption Overview - Imperva
Curve25519 Explained - Cloudflare