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?
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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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