Maybe these command-line options will help you:
--passphrase-fd n
Read the passphrase from file descriptor n. If you use 0 for n, the passphrase will be read from stdin. This can only be used if only one passphrase is supplied. Don't use this option if you can avoid it.
--command-fd n
This is a replacement for the deprecated shared-memory IPC mode. If this option is enabled, user input on questions is not expected from the TTY but from the given file descriptor. It should be used together with --status-fd. See the file doc/DETAILS in the source distribution for details on how to use it.
--status-fd n
Write special status strings to the file descriptor n. See the file DETAILS in the documentation for a listing of them.

In reply to Re: GPG w/o modules question by sgifford
in thread GPG w/o modules question by Molloc

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