Looking for Elgamal sign+encrypt key information

Len Sassaman rabbi at quickie.net
Tue Mar 16 06:14:38 CET 2004

On Mon, 15 Mar 2004, Atom 'Smasher' wrote:

> it would be within the scope of an RFC to specify how an application might
> handle encryption key preferences. it does, after all, specify how to
> handle [symmetric] cipher preferences.

Yes, because otherwise symmetric cipher choice would be entirely up to the
sender, not the recipient. Since the OpenPGP Key-id is based on the public
portion of the asymmetric cipher used, there is no such problem here.

But what you asked/said was:

> so, if one were to make an RSA-only key, that key would not be strictly
> openPGP compliant? one would have to add an ElGamal subkey, for full
> compliance?

Which is not true.

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