Active and Passive Attacks - Steganography - Encryption System - Cyber Security - Research - Assignment Help

Assignment Details:

Task 1:

1. Compare and contrast active and passive attacks, using real-world examples to support your points.
2. Compare and contrast steganography and classical encryption, using real-world examples or use cases to support your points.
3. Consider the following encryption system:
Input -> Monoalphabetic Encryption (Key: K1) Row Transposition Encryption (Key: K2) -> Output Suppose the ciphertext Output of the encryption system is: KNTGETRZTXRUQFACTIOSJNZAGTQ
The key values are:

• K1 = QWERTYUIOPLKJHGFDSAZXCVBNM
• K2 = 627158943

Find the corresponding Input plaintext text. Note that the plaintext is an intelligible English text.

Task 2:
1. Given the plaintext
{3F0EBF2BBC1589A33E21B2BDAD71A23C}
and the key
{A17067B7C7A2B6045766FD827DD8B3B5}
both are in hexadecimal. Using AES-128:

• Show the initial contents of the State Array, displayed as a 4 x 4 matrix.
• Calculate the value of State after initial AddRoundKey.
• Calculate the value of State after SubBytes.
• Calculate the value of State after ShiftRows.

2. Using the RSA algorithm with p = 47, q = 53, and e = 19.

• Calculate the decryption key d.
• Encrypt the message M = 03.

3. If the RSA public key of a user is (e= 5, n = 1343).

• Attempt to deduce the value of the private key d (i.e. break the key).
• Briefly explain any major difference between DES and RSA in terms of their respective attacks. An instance of an attack for each method should be used to illustrate the difference.

Task 3:
Reports of cybersecurity failures appear frequently on daily news. Perform research on a security incident that has happened within the last two years, then write a short report with the following main headings:

• Attack Summary
• Exploited Vulnerability
• Remedy Actions Taken
• Recommended Future Mitigation Strategy

Include appropriate figures and tables where applicable. Also, make sure to cite your sources appropriately using APA 6th style.

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