Problem trying to automate decrypt option

David Tomaschik david at
Thu Oct 18 01:33:18 CEST 2012

Have you tried --passphrase "myPassword" or --passphrase-fd 0 (with the pipe)?

(Standard statement about how storing the passphrase in a scheduled
task is a bad idea, etc.)


On Wed, Oct 17, 2012 at 5:56 AM, Gabi <gabi at> wrote:
> We want to automate the decrypt process in some file with a task in the
> operating system (Windows 7 64)
> What we want to do is from command line is: gpg2.exe --decrypt file.gpg >
> result.txt Of course it works ok, but launch pinentry.exe, a dialog box to
> ask for the password of the certificate.
> So we use a pipeline to send the password to gpg2 like this:
> echo "myPassword" | gpg2.exe --decrypt file.gpg > result.txt
> But this does not work.
> One possible workaround is that once we have put the password in the
> pinentry.exe dialog, we can decrypt again WITHOUT using the password and
> after some time (some minutes) gpg2.exe ask us for a password again.(For
> example after writing password if we run the same bat with the same command
> it does not ask us for a some minutes at least)
> So there could be 2 possible solutions we don't know how to implement.
> 1) A way to send the password to the dialog, the command echo "myPassword" |
> gpg2.exe --decrypt file.gpg > result.txt was supposed to work, we find it in
> a forum, but it does not work.
> 2) Can we change the time it ask again for the password? Where? How? If we
> can set it to, for example 1 year, the we can run the command, type the
> password in the dialog box and use the same command in a daily task and
> it'll work until next year...
> Has anybody an answer for 1) or 2)? Any of them will solve the problem...
> Regards.
> _______________________________________________
> Gnupg-users mailing list
> Gnupg-users at

David Tomaschik
OpenPGP: 0x5DEA789B
david at

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