Is it possible to construct a GPG Certificate from an existing RSA key pair

[Hubert Kario]

On Saturday 06 of October 2012 16:22:20 Melvin Carvalho wrote:
> On 6 October 2012 16:15, Hauke Laging <mailinglisten at hauke-laging.de> 
wrote:
> > Am Sa 06.10.2012, 15:53:25 schrieb Melvin Carvalho:
> > > Is it possible to construct a GPG 'Certificate' from an existing RSA
> > > key
> > > pair?
> > > 
> > > I've got some 2048 RSA keys I'd like to reuse, is there any way I can
> > > use
> > > them to make everything I need for GPG?
> > 
> > How do you have these key pairs? Are they part of a GnuPG keyring? What
> > is missing?
> 
> Long story but I have them in various forms
> 
> - as an exponent / modulus
> - as PEM
> - as DER
> - as .p12
> - as id_rsa (ssh)
> 
> I originally extracted the key pair from my GPG key->.p12 using some java
> code below:
> 
> https://gist.github.com/1505613
> 
> If there's any way it's theoretically possible to try and do the reverse
> and reconstruct some of the GPG from the .p12 I'd be very grateful to
> know.

There is some support for PGP in Bouncy Castle, so if is possible you should 
look at their API.

Regards,
-- 
Hubert Kario
QBS - Quality Business Software
02-656 Warszawa, ul. Ksawerów 30/85
tel. +48 (22) 646-61-51, 646-74-24
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