An agent wants to create fast and efficient cryptographic keys to use with Diffie-Hellman without using prime
numbers to generate the keys. Which of the following should be used?
A.
Elliptic curve cryptography
B.
Quantum cryptography
C.
Public key cryptography
D.
Symmetric cryptography
Diffie-Hellman is an algorithm used to establish a shared secret between two parties.
It is primarily used as a method of exchanging cryptography keys for use in symmetric encryption algorithms like AES.
As far as I know Diffie-Hellman is a method to exchange a key to be used with a symmetric cryptographic algorithm, so it falls very naturally in the area of symmetric key cryptography.
In addition to that, A, B and C are asymmetric.
As a memorization tool:
• Mr Diffie and Mr Hellman always SHARED SECRETS between them
• Mr Diffie kept 50% of Secrets. Mr. Hellman kept 50% of secrets. So they are perfectly balanced and SYMETRIC when it comes to shared secrets.
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