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What is D-H in relation to encryption? You can select more than one option
It mainly used for exchanging symmetric keys.
It stands for Diffie-Hellman .
It's mainly used for exchanging asymmetric keys.
It is used as a backup key in case of key loss.
Diffie Hellman is used as a key exchange mechanism and symmetric key exchange. [EDIT] This is a little tricky if you're not extremely careful with your definitions and how they're used in the wild. In a DH key exchange, the parties send to each other their own asymmetric public keys to establish a shared symmetric key. Personally, I would rather only call this a key establishment protocol (as they do not exchange symmetric keys , they establish one), but in reality, both exchange and establishment are used terminology for DH-type protocols.
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