Hi Michael

   I've executed fwknop-static.exe under cygwin version 1.7.16 with gpg package installed:

$ uname -a
CYGWIN_NT-5.1 inf-ws-0750-vm1 1.7.16(0.262/5/3) 2012-07-20 22:55 i686 Cygwin

Administrador@inf-ws-0750-vm1 ~
$ gpg --help
gpg (GnuPG) 1.4.12

   I don't know if I have libgpgme installed under Cygwin. 

   Is it a dependency of gpg package? 
   How can I check if it is installed? 
   How can I run fwknop with libgpgme under Cygwin? Is there any how-to explaining that?

   I've tried to install it via setup.exe putting the name libgpgme on the search field, but no package was listed...


2012/8/21 Michael Rash <mbr@cipherdyne.org>
On Aug 20, 2012, Bruno Galindro da Costa wrote:

> Hi!
>
>     I'm trying to use gpg auth between a Windows XP SP3 32bits client and
> an Ubuntu 10.04.4 64bits (fwknop server), but the following message is
> displayed when I execute the fwknop-static client downloaded from
> http://www.cipherdyne.org/fwknop/download/fwknop-static.exe :
>
> $ ./fwknop-static.exe -A tcp/22 --gpg-recipient-key 55AC3012 -a
> 10.50.30.120 -D 10.50.150.195
> *fwknop: fko_set_gpg_recipient: Error 19 - Unsupported or unimplemented
> feature or function*

I believe that gpg support from the native Windows binary has been
problematic.  Do you have Cywgin installed?  It might be worth seeing if
gpg support works from Cygwin with libgpgme.  I'll give this a try as
well.

--Mike


> $ ./fwknop-static.exe --help
>
> fwknop client version *2.0.0rc1*
> Single Packet Authorization client
>
> Usage: fwknop -A <port list> [-s|-R|-a] -D <spa_server> [options]
>
>
>
> --
> Att.
> Bruno Galindro da Costa

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Exclusive live event will cover all the ways today's security and
threat landscape has changed and how IT managers can respond. Discussions
will include endpoint security, mobile security and the latest in malware
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
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--
Att.
Bruno Galindro da Costa