Gpg Export Private Key
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Gpg Export Private Key
Posted about 5 years ago. Visible to the public.
Posted by Thomas Eisenbarth to makandra orga
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After extending the expiry date of a GPG key you might have to copy your key to another machine to use the same key there. Here is how:
Remember the ID of your key (second column, after the slash, e.g. "ABC12345"). If you have a "sub" entry, you can ignore it.
Run this command to export your key:
Copy the key file to the other machine using a secure transport ( scp is your friend).
If the key already existed on the second machine, the import will fail saying "Key already known".
To force import, you will have to delete both the private and public key first ( gpg --delete-keys and gpg --delete-secret-keys )
Note that you probably also have gpg2 on your system which is backwards-compatible with gpg, but seems to manage a separate list of keys. When using Thunderbird with Enigmail, note that it uses version 2 and may be unable to see your private key after importing. To fix that, run
Your GPG client notified you that your keypair will soon expire, or has already expired. Here is what to do.
When transmitting sensitive information, we never want to send unencrypted e-mails, but use GPG/PGP encryption.
Before starting, create a new entry in KeePass for your GPG key and create a new password. See the Security Guidelines for password policies.
Start generating a key by running the following command in your terminal
Now copy the PGP message to your mail client and send that mail.
Also see [Using GPG/PGP with Ubuntu and Thunderbird](...
Before starting, create a new entry in KeePass for your SSH key and create a new password. See the Security Guidelines for password policies.
Make sure you use a up-to-date SSH version to use secure values for the key generation, as for now at least 2048 Bit RSA!
When entering the password for your key, copy it once from KeePass (via the clipboard) and type it manually the second time (reveal it in Ke...
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How to export a GPG private key and public key to a file
GPG : Extract private key and import on different machine - makandra orga
Instructions for exporting /importing (backup/restore) GPG keys · GitHub
gpg 4usb - project : howto export a private key
How-To: Import/ Export GPG key pair - Debuntu
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Instructions for exporting/importing (backup/restore) GPG keys
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Every so often I have to restore my gpg keys and I'm never sure how best to do it. So, I've spent some time playing around with the various ways to export/import (backup/restore) keys.
NOTE The GPG manual suggests exporting the ownertrust instead of backing up the trustdb, although it doesn't explain why.
This only really works if you don't mind losing any other keys (than your own).
This is mainly about trusting my key once I've imported it (by either restoring the pubring.gpg and secring.gpg, or by using --import). This seems to be what I do the most as I either forget to import the trustdb or ownertrust.
This is so that I can encrypt data using my public key
NOTE If I don't trust the public key then I see the following message when trying to encrypt something with it:
Regarding the trustdb vs ownertrust export thing: the GPG manual actually does explain why --export-ownertrust is preferred, albeit on a different page :
This is useful for backup purposes as these values are the only ones which can't be re-created from a corrupted trustdb.
I still don't understand why this would be better over backing up the trustdb. The trustdb should only be corrupted if the backup is corrupted, I would assume. And if the backup is corrupted, the ownertrust.txt export would also be corrupted.
The trustdb should only be corrupted if the backup is corrupted, I would assume.
Not necessarily. The ownertrust export stores the values in plain text form ( fingerprint:level ), while trustdb don't. It could be corrupted because of GPG version incompatibilities and a number of other reasons.
Thanks for collecting this, and to everyone else for the thoughtful conversation.
Is method 2 a superset of method 1? Seems method 1 is only one step in method 2.
Any ideas why importing ownertrust from file gives me gpg: error in 'myownertrustfile.txt' line too long ?
You can simplify Method 3 a little by extending the command to:
There is also a way to run the command in a non-interactive mode:
@cmcginty nice usage of expect to automate this!
@atepavicharov Try converting the line endings from CRLF to LF (or vice-versa).
Method 1 failed because I had previous run gpg2 --list-keys --keyid-format LONG , which created some files and directories in ~/.gnupg/ . Make sure to delete those first, before restoring the .gpg files from the backup.
Regarding Method 1, see What’s new in GnuPG 2.1: Removal of the secret keyring
Export
When you exporting (via powershell) the output file will be encoded with BOM. If you try to import this will make the import fail with an error.
To resolve this issue change the encoding of the file to UTF8 without BOM.
Import using git bash.
Git bash and powershell are using different homedirs at my work setup due to roaming profiles.
Try starting the agent using the following command and retry:
gpgconf --launch gpg-agent
Is the exported private key (symmetrically) encrypted? If not, don't you think it's kind of important as a backup practice?
Is there any difference between gpg and gpg2?
why not just backup entire $HOME/.gnupg directory?
There is no pubring.gpg and secring.gpg in gpg2, probably just backup the whole .gnupg directory. Maybe just ensure that the .gnupg directory's permission and the files inside it are safe, for example permission 600 for private key, etc. cmiiw.
I use method 1 to restore my ~/.gnupg directory from a backup.
It didn't work at first, I needed to delete the whole directory first prior to the restore!
