Ephemeral defines things that are short-lived, like (for example) an ephemeral key, which is a key that only exists within the lifetime of a communication session.

learn more… | top users | synonyms

1
vote
0answers
55 views

Is it safe to derive ephmeral keys by hashing a curve25519 key and a sequential number?

My understanding of curve25519 is that a key is derived solely from Alice's private key and Bob's public key and that curve25519 will always yield the same shared secret $K_s$ for the same keys. Now, ...
2
votes
1answer
77 views

Ephemeral Diffie-Hellman generator selection

I need to generate a EDH group on the fly in one has not been specified in a config file. Diffie-Hellman is kind of expensive in terms of computation, so I'd like to reduce the cost if possible. Is ...