You can un-expire a GPG key. ############################ :date: 2012-01-13 03:54 :author: tyrel :category: Tech :tags: linux, gpg :slug: you-can-un-expire-a-gpg-key :status: published Today we had a problem at work on a system. Without getting into too much detail as to give away secrets behind the verbal NDA I am behind, I will just say that it had to do with a GPG public key of mine that was expired on a dev machine, accidentally propagating during install to a production machine. This key had a sub key as well, so figuring out this was tricky. To start, you can list your gpg keys like so: .. code-block:: console $ gpg --list-keys This will list keys such as .. code-block:: console pub 4096R/01A53981 2011-11-09 [expires: 2016-11-07] uid Tyrel Anthony Souza (Five year key for email.) sub 4096R/C482F56D 2011-11-09 [expires: 2016-11-07] To make this not expire, (same steps to change expiration date to another time), you must first edit the key .. code-block:: console $ gpg --edit-key 01A53981 You will then see a gpg prompt ``gpg>`` Type "expire" in and you will be prompted for how long to change it to .. code-block:: console Changing expiration time for the primary key. Please specify how long the key should be valid. 0 = key does not expire = key expires in n days w = key expires in n weeks m = key expires in n months y = key expires in n years You are then done setting the expiration on the primary key, if you have sub key, doing this is as easy as typing ``key 1`` and repeating the expiration step. To finish and wrap things up, type ``save`` and you are done.