18.1.2 - Private Key or Symmetric Key Encryption
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Practice Questions
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What is the primary function of symmetric key encryption?
💡 Hint: Think about the type of key used.
Define ciphertext.
💡 Hint: This is what happens to plaintext after encryption.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is symmetric key encryption?
💡 Hint: Focus on the key's role in both processes.
True or False: The Diffie-Hellman protocol allows two parties to agree on a key over a public channel securely.
💡 Hint: Is it possible to securely share a key in public?
1 more question available
Challenge Problems
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Assuming Sita uses a 128-bit key for symmetric encryption, how many possible keys are available? Discuss the implications of this number in terms of brute-force attacks.
💡 Hint: Think about the significance of key size in cryptography.
Analyze a situation where an attacker could successfully execute a man-in-the-middle attack on the key agreement process. What measures could Sita and Ram take to prevent this?
💡 Hint: Consider real-world examples of identity verification in communication.
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