OpenPGP Authentication Protocol?

Daniel Kahn Gillmor dkg at
Sun Dec 23 22:31:01 CET 2012

On 12/23/2012 01:23 PM, Hauke Laging wrote:
> Am So 23.12.2012, 12:01:25 schrieb Nicholas Cole:
>> Is there a protocol documented anywhere for using PGP Keys for client-server 
>> authentications?
> SSH? :-)

the ssh specification declares the use pgp-style certificates:

but does little to indicate how peers should consider them for
authentication purposes.  the majority of OpenPGP-verified ssh
connections in use on the net today are probably using raw keys on the
wire, but certifying them out-of-band via tools like the Monkeysphere.

RFC 6091 documents a mechanism for using OpenPGP certificates as peer
endpoints for a TLS session.

But similarly to the ssh situation, it may be simpler to pass "dummy"
public key placeholders (e.g. those that are well-formed X.509
certificates) and do the conversion to OpenPGP certificates on the
backend/out of band.


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