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Problem with GnuPG...need help

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Top Forums Shell Programming and Scripting Problem with GnuPG...need help
# 1  
Old 08-29-2007
Problem with GnuPG...need help
hello,


i am writing an automated script for GnuPG decryption for a file, which was already being encrypted,

homedir="/home/.gnupg"
PassPhrase=`cat /home/.gnupg/.passphrase`
echo $PassPhrase | gpg --homedir $homedir --passphrase-fd 0 --no-tty --output secret21.txt --decrypt-files secret2.txt

here bolded are the parameter passed.

but while executing the script it throws the following error
gpg: --output doesn't work for this command


if i modified the script i.e. hard code the pass phrase instead of getting it from the file, it works fine,

homedir="/home/.gnupg"
echo "mypassphrase" | gpg --homedir $homedir --passphrase-fd 0 --no-tty --output secret21.txt --decrypt secret2.txt

but this is not way , i want pass pharse should also get into script some hidden way.....
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LEARN ABOUT DEBIAN

gnupg::tie

GnuPG::Tie(3pm) 					User Contributed Perl Documentation					   GnuPG::Tie(3pm)

NAME

       GnuPG::Tie::Encrypt - Tied filehandle interface to encryption with the GNU Privacy Guard.

       GnuPG::Tie::Decrypt - Tied filehandle interface to decryption with the GNU Privacy Guard.

SYNOPSIS

	   use GnuPG::Tie::Encrypt;
	   use GnuPG::Tie::Decrypt;

	   tie *CIPHER, 'GnuPG::Tie::Encrypt', armor => 1, recipient => 'User';
	   print CIPHER <<EOF;
       This is a secret
       EOF
	   local $/ = undef;
	   my $ciphertext = <CIPHER>;
	   close CIPHER;
	   untie *CIPHER;

	   tie *PLAINTEXT, 'GnuPG::Tie::Decrypt', passphrase => 'secret';
	   print PLAINTEXT $ciphertext;
	   my $plaintext = <PLAINTEXT>;

	   # $plaintext should now contains 'This is a secret'
	   close PLAINTEXT;
	   untie *PLAINTEXT;

DESCRIPTION

       GnuPG::Tie::Encrypt and GnuPG::Tie::Decrypt provides a tied  file handle interface to encryption/decryption facilities of the GNU Privacy
       guard.

       With GnuPG::Tie::Encrypt everyting you write to the file handle will be encrypted. You can read the ciphertext from the same file handle.

       With GnuPG::Tie::Decrypt you may read the plaintext equivalent of a ciphertext. This is one can have been written to file handle.

       All options given to the tie constructor will be passed on to the underlying GnuPG object. You can use a mix of options to output directly
       to a file or to read directly from a file, only remember than once you start reading from the file handle you can't write to it anymore.

AUTHOR

       Francis J. Lacoste <francis.lacoste@Contre.COM>

COPYRIGHT

       Copyright (c) 1999, 2000 iNsu Innovations Inc.  Copyright (c) 2001 Francis J. Lacoste

       This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by
       the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

SEE ALSO

       gpg(1) GnuPG(3)

perl v5.14.2							    2011-11-22							   GnuPG::Tie(3pm)