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hyrious/renew-gpgkey.md

Created January 23, 2024 08:44
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Renew expired GPG key
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renew-gpgkey.md 
$ gpg --list-secret-keys --keyid-format=long
sec   rsa4096/0123456789ABCDEF 2020-12-22 [SC] [expired: 2021-12-22]
      0123456789ABCDEF0123456789ABCDEF12345678
uid                 [ expired] hyrious <hyrious@outlook.com>

$ # ok, they key 0123456789ABCDEF has expired, let's edit it
$ gpg --edit-key 0123456789ABCDEF
gpg> expire

Changing expiration time for the primary key.
Please specify how long the key should be valid.
         0 = key does not expire
      <n>  = key expires in n days
      <n>w = key expires in n weeks
      <n>m = key expires in n months
      <n>y = key expires in n years
Key is valid for? (0) 1y
Key expires at Tue 12 Apr 2022 20:28:50 IST
Is this correct? (y/N) y

sec  rsa4096/0123456789ABCDEF
     created: 2021-01-29  expires: 2022-04-12  usage: SC
     trust: ultimate      validity: ultimate
ssb  rsa4096/FEDCBA9876543210
     created: 2021-01-29  expires: 2021-12-22  usage: E
[ultimate] (1). hyrious <hyrious@outlook.com>

# Note that the sub key is not updated too, let's update it
gpg> key 1
gpg> expire
# Answer the same like above

# Now save it!
gpg> save

$ # Export it and copy the public key to GitHub
$ gpg --armor --export 0123456789ABCDEF | pbcopy

$ # 1. Delete the old key on GitHub
$ # 2. Add a new key
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