Re: Is it possible to update the version of gcrypt?

[Pascal Quantin <pascal.quantin () gmail com>]

Hi Martin,

I tried myself to compile the libgpg-error 1.12 and libgcrypt 1.6.0
libraries using the mingw cross-compilation toolchain but I was not really
successful (Wireshark does not start due to an issue with the exported
symbols from libgpg-error-0.dll).

The good news is that OpenSUSE now provides updated libgcrypt /
libgpg-error libraries both for win32 and win64 now
http://download.opensuse.org/repositories/windows:/mingw:/win32/openSUSE_13.1/noarch/
http://download.opensuse.org/repositories/windows:/mingw:/win64/openSUSE_13.1/noarch/

It means that we might be able to have support for AES CMAC on Windows (IF
those new libraries are still compatible with our current version of
GnuTLS).

So I tried those OpenSUSE libraries but I have the same error as with my
own build: I get an error that can be roughly translated as
"the procedure entry point gpg_strerror cannot be found in the dynamic
library libgcrypt-20.dll"
This function is supposed to be exported by libgpg-error-0.dll.

Gerald, according to the README.Wireshark file found in
gnutls-2.12.18-1.2-win32ws archive, you manually modified the OpenSUSE
packages:
  - Definition files were created using "pexports".
  - Import libraries were created using the MSVC++ "lib" utility using the
"make-lib.sh" script.
I do not know where to find those utilities neither how to use them.

Maybe those missing steps on my side can explain my issue. Would you be OK
if we to try to upgrade those libraries? If yes, could you help?

2 small things I noted:
- libgcrypt-11.dll/lib is now renamed libgcrypt-20.dll/lib. It impacts
config.nmake, Makefile.nmake, cmake\modules\FindGCRYPT.cmake,
packaging\nsis\wireshark.nsi and ui\qt\QtShark.pro
- the openSUSE libraries require an extra libgcc_s_sjlj-1.dll file found in
mingw32-libgcc-4.8.2-1.2.noarch.rpm archive (my own compiled libraries did
not need it but I failed to compile a win64 variant so far).

Thanks,
Pascal.



2013/12/23 Martin Mathieson <martin.r.mathieson () googlemail com>

> Hi,
>
> I would like to make use of an AES mode only available in the most recent
> version of gcrypt (1.6).  Is it possible to upgrade the version that comes
> as a result of running the Windows 'setup' target?
>
> My guess is that its not easy, and that we take the version that came with
> an old version of gnutls, whereas recent versions now use nettle as the
> low-level crypto library?  We have 10 dissectors that use libgcrypt, so
> moving to nettle would take a bit of work.  I'm not yet certain that nettle
> supports what I need (never mind the other current users of gcrypt)- I'd
> need to write a test program to see if it does what I need.
>
> Regards,
> Martin
>
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