Practice Public Key Cryptography (16.2) - Lecture - 64 - Discrete Mathematics

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6 sample questions

Question 1.
What is public key cryptography?
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Think about the 'lock and key' analogy.
Question 2.
Name one limitation of the Diffie-Hellman protocol.
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Consider users in different time zones.
3Question 3.
What is the main function of public key cryptography?
- To encrypt messages with a shared key
- To allow secure communication without shared secrets
- To use a single key for encryption and decryption
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Focus on the difference between shared and separate keys.
4Question 4.
True or False: The Diffie-Hellman protocol does not require both parties to be online.
- True
- False
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Remember the need for simultaneous contact.
Question 5.
Design a simple cryptographic protocol using the public key structure discussed, ensuring it addresses the limitations of symmetric systems.
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Consider how to handle the distribution of keys.
Question 6.
Discuss the implications of breaking the RSA encryption scheme. What would it mean for modern communications?
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Think about real-world applications and services that rely on RSA.

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