Comparison of RSA vs elliptical keys

Stefan Claas sac at
Wed May 13 15:09:43 CEST 2020

Robert J. Hansen wrote:
> > RJH's answer sounds like a good piece of advice, but still, at the
> > end, we HAVE to to choose which algorithm to use when creating new
> > key pairs.
> rjh at maggie:~$ gpg --gen-key
> gpg: WARNING: using experimental features from RFC4880bis!
> Note: Use "gpg --full-generate-key" for a full featured key generation
> dialog.
> GnuPG needs to construct a user ID to identify your key.
> Real name: Delete Me
> Email address: delete at
> You selected this USER-ID:
>     "Delete Me <delete at>"
> Change (N)ame, (E)mail, or (O)kay/(Q)uit? o
> We need to generate a lot of random bytes. It is a good idea...
> [snip]
> Where in there was I ever asked to choose an algorithm?

In older versions, like 2.0.x for example, it asked for ...

> "Unless you know what you're doing and why, use the defaults."  I've
> been saying that for twenty years now.  I keep thinking that someday
> someone will actually take it seriously...

Super modern OpenPGP implementations like the super awesome sequoia pgp
defaults to cv25519... (and does not need to generate a UID for privacy
reasons, simply fantastic!)


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