18.2.2 - Analogy of the Lock Box
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Practice Questions
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What is symmetric key encryption?
💡 Hint: What does symmetric mean?
Why is a key agreement necessary?
💡 Hint: What happens if two parties don’t have a key?
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Interactive Quizzes
Quick quizzes to reinforce your learning
What type of encryption uses the same key for both encryption and decryption?
💡 Hint: Think of it as two sides of the same coin.
True or False: Key agreement can occur over a public channel without risk.
💡 Hint: What happens if someone intercepts the key?
2 more questions available
Challenge Problems
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Design a scenario where Sita and Ram wish to communicate. Describe how they would use both symmetric key encryption and the Diffie-Hellman key exchange protocol to secure their messages.
💡 Hint: Think about how they establish and utilize their key.
If an attacker manages to intercept the ciphertext, what steps might they take to decipher the original message? Discuss what measures could be put in place to mitigate such threats.
💡 Hint: Consider the importance of key complexity and cryptographic strength.
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