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Setup Github GPG key on Macbook (Mac OS)

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Create gpg key

  1. Install gpg command.
    • brew install gnupg
  2. Create gpg key and keep press enter to use the default setting. In the last step, set up a paraphrase(password).
    • gpg --full-generate-key
  3. Check your gpg key.
    • gpg --list-secret-keys --keyid-format=long
  4. Copy the A111111111A11A11 part.
    • Example: ed25519/A111111111A11A11
  5. Export gpg key.
    • gpg --armor --export A111111111A11A11

Setup gpg in Github

  1. Setting -> SSH and GPG keys -> New GPG key.
  2. Paste the export from the previous step.

Git setting

  1. Tell git your sign key.
    • git config --global user.signingkey A111111111A11A11
  2. Force git to sign commits.
    • git config --global commit.gpgsign true
  3. Install gpgtools to save the paraphrase.
    • brew install --cask gpg-suite

Setup gpg variables

  1. Edit config file.
    • sudo vim ~/.zshrc
    • Add export GPG_TTY=$(tty) to the end of file.
  2. Update config file.
    • source ~/.zshrc

Setup gpg timeout

  1. sudo vim ~/.gnupg/gpg-agent.conf
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default-cache-ttl 34560000
max-cache-ttl 34560000

Sign commit

  1. git commit -s -m 'your commit'
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