In Thunderbird, select the Enigmail
menu, then select Key Management
You should see a list of keys that you’ve contacted.
TIP: I like to display Name
, Fingerprint
and Expiry
as columns. By default Enigmail shows the unsafe, short Key ID
which we should ignore. You can tweak the columns by pressing the little button on the right of the column headers.
Search for your long key ID, for example 0x309F635DAD1B5517
in the Search for
box. You should see your key:
Right click on your key and select Change Expiration Date
. You should see a window like this:
Make sure your primary key and subkeys are selected.
Choose a time period. I personally recommend 3 months to 1 year.
Select OK
and follow the prompt.
To tell the world about your new key expiry date, you’ll need to send it to the keyservers
Right click on the key and select Upload Public Keys to Keyserver
Your contacts will need to get your updated key from the keysevers by refreshing their keys. Some software does this automatically.
In any case, if a contact says your key has expired, you’ll know what to tell them.
If this didn’t work, you could alternatively try the GnuPG guide.
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