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4 cards from this section. Quick, good the night before a test.
What is symmetric key encryption?
Think about what makes it secure.
Name one challenge of establishing a common key over a public channel.
Consider who might be listening.
What is the role of the common key in symmetric encryption?
What happens to a message before it reaches the recipient?
True or False: The Diffie-Hellman protocol requires both parties to establish a secure channel before agreeing on a key.
What is unique about this protocol?
Design your own key exchange protocol similar to Diffie-Hellman, detailing how it could securely share information over a public channel.
Think about the example of mixing colors and how each participant can add their secret.
Critically evaluate the security risks if a common key is not established in secure communications.
Imagine if anyone could read emails between Sita and Ram!
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