Use of --passphrase-file
sbutler at fchn.com
Thu Feb 18 22:56:21 CET 2016
Any "secure" storage for the passphrase will itself need a mechanism to "unlock". This only digs the hole one more level down. Only you can decide when to stop digging. But remember, whatever the automated script can do, a human following the script can also do. [Note to self, use "hacker" instead of "human" next time.]
After wrestling with this for some time several years ago, I came to the conclusion that I could only delay the inevitable and could not prevent it. I my case I chose to "hide" the plaintext passphrase in a fashion that kept the casual looker (non-hacker) at bay (1 level down) but was real easy to implement and didn't require another password/phrase. Any serious programmer could easily read the code and reveal the passphrase. Then I limit who has access to that particular box.
Stephen M. Butler, PMP, PSM
IT Manager - Software Engineering
First Choice Health Network
Email: sbutler at fchn.com<mailto:sbutler at fchn.com>
From: Gnupg-users [mailto:gnupg-users-bounces at gnupg.org] On Behalf Of Harman, Michael
Sent: Wednesday, February 17, 2016 8:34 AM
To: gnupg-users at gnupg.org
Subject: Use of --passphrase-file
I am attempting to automate a process that decrypts files. The files are encrypted with my key which has a passphrase. I have determined I can use the "--passphrase-file" option to get the passphrase of my key. In the gpg documentation at https://www.gnupg.org/documentation/manuals/gnupg/GPG-Esoteric-Options.html, under "--passphrase-file file" it says "Don't use this option if you can avoid it", but I can't find any alternative solution in the documentation. I found one blog that says to just remove the passphrase, however I'd like to preserve the passphrase. Do you have any recommendations where I can have a passphrase but still use it in an unattended fashion that is secure?
Michael W. Harman, MIT | Senior Application Architect, Information Services | UHS of Delaware, Inc. | a subsidiary of Universal Health Services | Phone 610.768.3416
UHS of Delaware, Inc. Confidentiality Notice: This e-mail message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution of this information is prohibited, and may be punishable by law. If this was sent to you in error, please notify the sender by reply e-mail and destroy all copies of the original message.
CONFIDENTIALITY NOTICE: This e-mail message, including any attachments,
is for the sole use of the intended recipient(s) and may contain
and privileged information. Any unauthorized review, use, disclosure or
distribution is prohibited. If you are not the intended recipient, please
contact the sender by reply e-mail and destroy all copies of the original
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the Gnupg-users