Access violation using gpgme

[Andre Heinecke]

Hi,

On Tuesday, February 5, 2019 6:21:45 PM GMT Daniel Lo Nigro wrote:
> I'm using gpgme_set_pinentry_mode to set the pinentry mode to "loopback",
> and the access violation is being encountered after my pinentry callback
> returns. It works fine if I don't use loopback, and instead use the
> system's pinentry mechanism.

This sounds like your passphrase callback returns invalid data. I would have 
to look how the PassphraseResult is mapped in the C# bindings but from the C 
API:

The user must write the passphrase, followed by a newline character,
to the file descriptor @var{fd}.  The function @code{gpgme_io_writen}
should be used for the write operation.  Note that if the user returns
0 to indicate success, the user must at least write a newline
character before returning from the callback.


I do not think that you need to post your full code, but I would be interested 
in seeing your Passphrase callback.
(Sorry If I'm  the only one answering here but in the GnuPG Team I'm the Guy 
for "all things windows" ;-) )


Regards,
Andre

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