GPGME DLL questions

Gpg4win help-en
1

I’m one of the maintainers of gpgme-sharp, a library that provides GPGME bindings for C#. I had a few questions about the GPGME DLL:

  • I noticed a DLL at C:\Program Files (x86)\Gpg4win\bin_64\libgpgme6-11.dll that seems to be undocumented. This appears to be a 64-bit version of libgpgme-11.dll. Does the 6 in the name just signify that it’s 64-bit, or is there a deeper meaning there?
    • Which version of Gpg4Win added this DLL (since I don’t remember it being there in the past)?
  • Does the Gpg4Win installer write a registry key (or other configuration entry) with the path to Gpg4Win (e.g. C:\Program Files (x86)\Gpg4win\) that we can use to locate the DLLs if they’re not in the default location of %ProgramFiles(x86)\Gpg4Win\?
  • Would I be allowed to bundle libgpgme-11.dll and libgpgme6-11.dll with gpgme-sharp, or do I need to require that users install Gpg4Win manually (which is the current state today)? On Linux we just rely on libgpgme.so.11 being present on the system.

Thanks!

2

Hi Dan, welcome to our forum and thanks for developing a gpgme wrapper!

Good questions,
for some of your questions I do not know the answer, if you do not get one here, a good other place to ask is https://lists.wald.intevation.org/pipermail/gpg4win-devel/ or The Gnupg-devel Archives

Would I be allowed to bundle libgpgme-11.dll and libgpgme6-11.dll with gpgme-sharp,

It is possible if the conditions of the Free Software licenses are fulfilled. GPGME is under LGPL-2.1-or-later and GnuPG itself, which you would also need is under GPL-3.0-or-later.

While it is possible from the licensing side, it maybe better for updating if the original Gpg4win packages were used.

Regards,
Bernhard