18.2.1 - Encryption and Decryption Algorithms
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Practice Questions
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What is symmetric key encryption?
💡 Hint: Think about the key used in both processes.
Define plaintext.
💡 Hint: What do we call the message before it is scrambled?
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is symmetric key encryption?
💡 Hint: Remember the definition shared in class.
True or False: The Diffie-Hellman protocol can securely create a shared key even over insecure channels.
💡 Hint: Consider the main purpose of the Diffie-Hellman protocol.
1 more question available
Challenge Problems
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Consider a scenario where Sita and Ram have established a symmetric key. If an adversary intercepts their ciphertext, what cryptographic strategies could they employ to attempt to recover the plaintext? Discuss the feasibility of these methods.
💡 Hint: Reflect on how long cracking a strong key would take.
The security of the Diffie-Hellman protocol relies on the difficulty of the discrete logarithm problem. How might changes in computational power influence its security? Discuss potential impacts on cryptographic practices.
💡 Hint: Think about how advancements in technology can change encryption strengths.
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