OpenPG/X.509 interoperability

Henning Hucke h_hucke at
Tue Nov 1 19:56:25 CET 2005

On Mon, 31 Oct 2005, Werner Koch wrote:

> On Mon, 31 Oct 2005 00:36:13 +0100, Christoph Anton Mitterer said:
> > This is perhaps a stupid question but how far are these two standards 
> > interoperable?
> They are not interoperable.

Depends on what you rate to be "interoperable" (see below).
> > Can X.509 certificates be used to sign/certificate OpenPGP UIDs?
> No.  You can add a private extension to do so.

X.509 as well as OpenPGP are just package aroung the product. You can 
use the private and public keys themselfs to package them as OpenPGP or 
X.509. So this way you can have one and the same key pair to work in 
both worlds.
> [...]

Best regards
They are called computers simply because computation is
the only significant job that has so far been given to them.

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