Gnupg Decryption Question

Steve Butler sbutler at
Thu Jul 23 19:11:03 CEST 2015

This is a snippet of the script I use to decrypt any file coming to me that has my private key (or my companies private key)

  $DFLT gpg_pass2 \
  | gpg --homedir $homedir --quiet --passphrase-fd 0 --no-tty --skip-verify \
        --no-permission-warning --no-mdc-warning --batch  \
        --output "$oname" --decrypt "$x" > /dev/null 2>&1

The DFLT gpg_pass2 script manages to obtain the pass phrase for the private key and pipe it to gpg via stdin
The statement right after the above does check to see if the status ($?) is 0.

From: Gnupg-users [ at] On Behalf Of David Carter
Sent: Thursday, July 23, 2015 7:47 AM
To: gnupg-users at
Subject: Gnupg Decryption Question


We currently use Gnupg 1.4.10 as part of our interactions with an online mailbox system. We are able to successfully encrypt our data files but we haven't been able to find the combination of options that will let us decrypt files that we receive - so we've used a different product for that purpose.  Our desire is to use only one product to perform both encryption and decryption.

This is a sample of how we would call gpg to encrypt a text file prior to transmission:

gpg -c -o DataFile.gpg --batch --compress-algo 1 --cipher-algo cast5 --passphrase KeyValue DataFile.txt

The files that we receive share the same KeyValue, so we would appreciate some guidance on undoing what was done above.

Thanks very much.

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