Purpose of this guide is to provide a step-by-step guide on how to install and setup GPG key on Ubuntu Server.
Create gpg key:
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gpg --full-generate-key
Set ownertrust:
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gpg --edit-key <key-id>
gpg> trust
# Input: 5 for ultimate trust
# "q" for save and quit
List Secret Keys:
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gpg --list-secret-keys
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gpg --list-secret-keys --keyid-format LONG
Export public key:
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gpg --armor --export <key-id>
Git Configure:
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git config --global user.signingkey "<secret_id>"
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git config --global commit.gpgsign true
Export following into bashrc or zshrc:
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export GPG_TTY=$(tty)
Backup gpg key:
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gpg -a --export <email-id> > public-key.asc
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gpg -a --export-secret-keys <email-id> > secret-key.asc
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gpg --export-ownertrust > ownertrust-gpg.txt
Restore gpg key:
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gpg --import public-key.asc
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gpg --import secret-key.asc
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gpg --import-ownertrust ownertrust-gpg.txt
Delete gpg key:
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gpg --delete-keys <key-id>
Delete gpg secret key:
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gpg --delete-secret-keys <key-id>
If .gnugpg directory empty then configure gpg using following command:
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gpgconf --kill gpg-agent
Renew gpg expire:
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gpg --edit-key <key-id>
gpg> expire
# Input: 1y
# "q" for save and q